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Guest Editorial: Special Section on Multilevel Converters as an Enabler for Grid Modernization IEEE Trans. Power Electr. (IF 6.7) Pub Date : 2023-09-06 Jingyang Fang, Sanjib Kumar Panda
With great pleasure, we would like to present the Special Section on Multilevel Converters as an Enabler for Grid Modernization of the IEEE Transactions on Power Electronics (TPEL), which focuses on the research and development of multilevel converters in modern power grids. On the one hand, we investigate the implementation of grid-supportive services and novel control schemes provided by multilevel
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Guest Editorial: Special Section on Advanced WPT Systems With High Efficiency and Misalignment Tolerance Characteristics IEEE Trans. Power Electr. (IF 6.7) Pub Date : 2023-09-06 Yijie Wang, Chunting Chris Mi
Wireless power transfer (WPT) technology has become a developing trend with the advantages of flexibility and security. However, WPT systems also face some challenges, such as output power fluctuations caused by misalignment or dynamic charging, accurate modeling of high-order systems, system integration, load estimation, and simultaneous transmission of power and data. Therefore, advanced topologies
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Guest Editorial: Special Section on Switched Capacitor Converters (SCCs) IEEE Trans. Power Electr. (IF 6.7) Pub Date : 2023-09-06 Yam P. Siwakoti, Robert C. N. Pilawa-Podgurski
Switched capacitor converters (SCCs) have been widely investigated and used in both academia and industry for many years, ranging from low power (milliwatt level) to high power (several kilowatt levels) for a myriad of applications. SCCs offer several advantages, including the elimination of inductor and related magnetic design issues and hence low electromagnetic interference (EMI), better form factor
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Current Balancing of a Multiphase Inverter for LCC-S Compensated Wireless Power Transfer System Based on Mutually Negatively Coupled Inductors IEEE Trans. Power Electr. (IF 6.7) Pub Date : 2023-08-02 Yiming Zhang, Rongbin Liu, Hui Wang, Xingkui Mao, Xiaoying Chen
To enhance the output power level of wireless charging applications, multiphase inverters are usually required to work in parallel. Even though the same pulsewidth modulated signals are applied for the corresponding switches, there can still be phase differences in the driving pulses, which directly turn on/off the switches, due to the inconsistency in the switch parameters or driving circuits. The
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Corrections to “High Power X-band Monolithic GaAs PIN Balanced Limiter” IEEE Trans. Power Electr. (IF 6.7) Pub Date : 2023-07-31 Shifeng Li, Leiyang Wang, Bang Wu, Dingyi Guo, Yunfan Li, Yilin Zhao, Gary J. Cheng, Feng Liu
Presents corrections to the paper, (High Power X-band Monolithic GaAs PIN Balanced Limiter).
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An Intelligent Synchronous Power Control for Grid-Forming Inverters Based on Brain Emotional Learning IEEE Trans. Power Electr. (IF 6.7) Pub Date : 2023-08-01 Arman Oshnoei, Hoda Sorouri, Remus Teodorescu, Frede Blaabjerg
Grid-forming inverters (GFMI) are prone to have small-signal stability problems when connected to a stiff ac grid. Such stability problems originate significantly from the absence of GFMI control adaptivity to the varying short-circuit ratio (SCR). To confront this challenge, this letter proposes an intelligent synchronous power control (SPC) scheme that is robust against a wide range of SCR of the
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Study on the Media Characteristics of Single-Wire Power Transfer System IEEE Trans. Power Electr. (IF 6.7) Pub Date : 2023-08-01 Yang Li, Wenxin Huang, Yizheng Chen, Wei Hu, Xueliang Wang
Single-wire power transfer (SWPT) can achieve a similar effect as wireless power transfer by using inherent facilities as the transport media, and the different selection of the transport media can lead to a great difference in the system transfer efficiency. In this article, the electromagnetic properties, structural variations, and bending variations of the transport media in the system are investigated
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Synchronous Operation of High-Frequency Inductive Power Transfer Systems Through Injection Locking IEEE Trans. Power Electr. (IF 6.7) Pub Date : 2023-08-01 Nunzio Pucci, Christos Papavassiliou, Paul D. Mitcheson
High-frequency inductive power transfer systems can be designed for operation with high tolerance to misalignment and large air-gaps, making it possible to operate in highly dynamic environments. Most examples in the literature use a single active transmitter and a single passive receiver (active–passive approach). Such systems are limited to unidirectional power flow and are susceptible to detuning
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A Novel Snubber Circuit for MMC Submodule Using Gap-RC to Suppress Fast Transient Overvoltage IEEE Trans. Power Electr. (IF 6.7) Pub Date : 2023-08-01 Hong Shen, Xiangyu Zhang, Lei Qi, Sheng Zhang
The modular multilevel converter (MMC) will be subjected to transient impacts, such as switch operation in gas-insulated switchgear and wall bushing flashover, resulting in MMC submodules' ports suffering from fast transient overvoltage (FTO), posing a threat to the safe operation of power devices. This letter proposed an FTO suppression method using gap- RC as an additional snubber circuit and provided
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Current-Limiting Strategy for Asymmetric Short-Circuit of Three-Phase Inverter for Continuous Power Supply of Nonfaulty Loads IEEE Trans. Power Electr. (IF 6.7) Pub Date : 2023-08-01 Youwen Zhang, Xuejun Pei, Min Yang, Jin Li, Peng Zhou, Yue Yao
The short-circuit fault ride-through capability of the inverter directly affects the reliability of the independent power supply system under short-circuit faults. Many existing short-circuit current-limiting strategies of three-phase inverters only ensure that the inverter outputs the fault current to trip the faulty branch circuit breaker during the fault period. This leads to interruption of power
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Optimal Terminals of a Multitransmitter Multireceiver Inductive Coupler With Equality Power Constraints IEEE Trans. Power Electr. (IF 6.7) Pub Date : 2023-07-31 Rong He, Xinlin Wang, Haoyu Wang, Minfan Fu
This article develops a general and comprehensive ac analysis to study the optimal condition of a multitransmitter (TX) and multireceiver (RX) coupler. Based on the practical demands, a standard optimization problem is defined and solved by the Lagrange multiplier method. This article would analytically discuss the optimal coupler condition, discuss its physical meaning, and build a uniform perspective
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Optimized Magnetic Core Layer in Inductive Power Transfer Pad for Electric Vehicle Charging IEEE Trans. Power Electr. (IF 6.7) Pub Date : 2023-07-31 Brian S. Gu, Tharindu Dharmakeerthi, Seho Kim, Michael J. O'Sullivan, Grant A. Covic
This article proposes a reduced ferrite inductive power transfer (IPT) system for electric vehicle (EV) charging using ferrite-based soft magnetic composites (SMCs). IPT pads typically consist of a significant amount of ferrite to improve field shaping for better magnetic coupling between the primary and the secondary pads. However, the costly and brittle nature of ferrite leaves the IPT pads vulnerable
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Stability-Oriented Multiobjective Control Design for Power Converters Assisted by Deep Reinforcement Learning IEEE Trans. Power Electr. (IF 6.7) Pub Date : 2023-07-31 Shan Jiang, Yu Zeng, Ye Zhu, Josep Pou, Georgios Konstantinou
Impedance characteristics of power converters are dependent on operating conditions, posing challenges to the stability-oriented design of control systems. This is because constant control parameters, designed according to a limited number of operating conditions, may cause instability in other conditions. In this letter, a deep reinforcement learning-assisted framework is proposed to achieve multiobjective
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Optimization of a 6.78-MHz Inductive Power Transfer System for Unmanned Aerial Vehicles IEEE Trans. Power Electr. (IF 6.7) Pub Date : 2023-07-28 Jiasheng Huang, Yi Dou, Xiaosheng Huang, Zhe Zhang, Ziwei Ouyang, Michael A.E. Andersen
This article presents an optimization of a 6.78-MHz inductive power transfer (IPT) system for unmanned aerial vehicles (UAVs). First, in order to mitigate the impact of the misalignment between the transmitting coil and the receiving coil on the output power and system efficiency, a homogeneous-flux transmitting coil was developed. The optimal allocation of turns of the transmitting coil for generating
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Quasi-Peak Current Control Strategy for Four-Switch Buck–Boost Converter IEEE Trans. Power Electr. (IF 6.7) Pub Date : 2023-07-28 Zhaoliang Wen, Weiming Tang, Dianguo Xu
With the rapid increase of power consumption in data centers, the 48 V power delivery architecture is introduced, where a two-stage dc–dc power conversion solution is commonly adopted. Four-switch buck–boost (FSBB), as a topology with both voltage step-up and step-down capabilities, is very suitable for implementation as a front-end preregulation module. In this article, the quasi-peak current control
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Capacitor Tuning of LCC-LCC Compensated IPT System With Constant-Power Output and Large Misalignments Tolerance for Electric Vehicles IEEE Trans. Power Electr. (IF 6.7) Pub Date : 2023-07-27 Xian Zhang, Ruiguang Xue, Fengxian Wang, Fei Xu, Ting Chen, Zhixin Chen
Inductive-power-transfer (IPT) is widely used in wireless charging of electric vehicle (EV). However, the output power and efficiency of the IPT system are often affected by misalignments. In this article, a double-side- LCC ( DLCC ) compensation network with switch-controlled-capacitors IPT topology is proposed to improve the misalignments tolerance for EV. First of all, the output power models of
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Transfer Learning Based Online Impedance Identification for Modular Multilevel Converters IEEE Trans. Power Electr. (IF 6.7) Pub Date : 2023-07-26 Mengfan Zhang, Yang Zhang, Qianwen Xu
The large integration of modular multilevel converters (MMC) has introduced stability issues. The impedance-based stability analysis method is widely adopted, where the impedance model can be directly achieved at the terminals through nonintrusive measurement, which facilitates the black-box stability analysis of the MMC–grid interaction system. Yet, due to the limited impedance data amount in the
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Duty Cycle Based Model Predictive Control With Hexagonal Virtual Voltage Vectors for Grid-Tied Generation System With the Six-Switch Converter IEEE Trans. Power Electr. (IF 6.7) Pub Date : 2023-07-26 Paulo Roberto Ubaldo Guazzelli, Stefan Thiago Cury Alves dos Santos, José Roberto Boffino de Almeida Monteiro, Manoel Luís de Aguiar
The application of duty cycle-based finite control set model predictive control (FCS-MPC) to the six-switch converter (SSC), a reduced switch count multiport converter, faces the drawback of an asymmetrical and limited set of voltage vectors, which deteriorates the quality of the system currents. To overcome this issue, this article proposes an FCS-MPC technique with duty cycle optimization for a wind
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Fault Current Limitation With Energy Recovery Based on Power Electronics in Hybrid AC–DC Active Distribution Networks IEEE Trans. Power Electr. (IF 6.7) Pub Date : 2023-07-26 Bin-Long Zhang, Mou-Fa Guo, Ze-Yin Zheng, Qiteng Hong
The active distribution networks have a tendency to develop toward hybrid ac–dc systems constructed by power electronics, the magnitude and direction of power may change randomly at any time, making the usual protection potentially insensitive, raising the negative impacts of single-phase ground (SPG) fault which accounts for the majority of all faults that occurred in medium-voltage (MV) distribution
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A Modified Carrier-Based DPWM With Reduced Switching Loss and Current Distortion for Vienna Rectifier IEEE Trans. Power Electr. (IF 6.7) Pub Date : 2023-07-25 Yushuo Pei, Yu Tang, Hucheng Xu, Jincai Niu, Leijiao Ge
Carrier-based discontinuous pulsewidth modulation (PWM) is widely used in three-level ac/dc converters due to its features of higher efficiency and simpler implementation. However, the problems of switching losses, current distortion around zero-crossing points, and neutral-point (NP) voltage fluctuation are mutually coupled for the Vienna rectifier. Therefore, this article proposes a modified carrier-based
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Remote Negative-Sequence Voltage Fair Compensation in Grid-Forming Inverter-Based Islanded AC Microgrids IEEE Trans. Power Electr. (IF 6.7) Pub Date : 2023-07-25 Ángel Borrell, Manel Velasco, Antonio Camacho, Jaume Miret, Miguel Castilla
The presence of unbalanced loads in power systems creates voltage imbalances that perturb the operation of sensitive equipment like induction motors, power electronics converters, and adjustable speed drives. To address this issue, this article presents a novel control scheme to perform remote negative-sequence voltage fair compensation at any node of a grid-forming inverter-based islanded ac microgrid
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Load-Independent Push–Pull Class-$\Phi _{2}$ Inverter With Single Compact Three-Winding Inductor IEEE Trans. Power Electr. (IF 6.7) Pub Date : 2023-07-24 Xiaosheng Huang, Yongshu Lin, Yi Dou, Shuyi Lin, Jing Huang
This article proposes a push–pull class- $\Phi _{2}$ inverter with a single three-winding integrated inductor. A design methodology is presented to achieve load-independent operation of the proposed class $\Phi _{2}$ inverter, ensuring consistent soft-switching operation and constant voltage gain under varying load conditions. A compact magnetic structure is proposed to implement the three-winding
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Adaptive-Output-Voltage-Regulation-Based Solution for the DC-Link Undervoltage of Grid- Forming Inverters IEEE Trans. Power Electr. (IF 6.7) Pub Date : 2023-07-24 Cheng Luo, Xikui Ma, Teng Liu, Xiongfei Wang
This article proposes an adaptive-output-voltage-regulation (AOVR)-based solution to alleviate the dc-link undervoltage for grid-forming (GFM) inverters. First, it is shown that large disturbances may cause the dc-link undervoltage for GFM inverters threatening the safe operation of the system. To tackle this issue, an AOVR-based control strategy is proposed, whose main idea is to reduce the output
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Misalignment-Tolerant Integration for S-$LCC$-Compensated WPT Systems: A Complementary-Coupling Compact Receiver IEEE Trans. Power Electr. (IF 6.7) Pub Date : 2023-07-21 Xian Zhang, Xianjie Ma, Zhaoyang Yuan, Fei Xu, Zhixin Chen, Fengxian Wang
This article proposes a complementary-coupling compact receiver (RX) solution for an series–inductor–capacitor–capacitor-compensated wireless power transfer (WPT) system to tolerate the misalignment. To this end, a RX coil formed by four series L-shaped coils is proposed and integrated into the compensation (CX) coil. As a result, the mutual inductances (MIs) between the RX and transmitter (TX) coils
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Analysis and Design of a Cost-Effective WPT System With Single-Input and Multioutput Based on Buck-Integrated Rectifier IEEE Trans. Power Electr. (IF 6.7) Pub Date : 2023-07-21 Xinghong He, Chenyan Zhu, Jin Tao, Yiming Zhang, Ruikun Mai
Recently, wireless power transfer (WPT) has been a competitive power supply mode due to its convenience and safety. Normally, a WPT system provides only one output, whereas some devices request multiple voltage levels. In this letter, a single-input and multioutput WPT system is proposed. By integrating two buck converters into a full-wave rectifier, three constant voltage outputs are achieved with
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Efficient Talkative Power Conversion With Quasi-Square-Wave Zero-Voltage Switching Hysteretic Current Control IEEE Trans. Power Electr. (IF 6.7) Pub Date : 2023-07-20 Stefan Mönch, Carsten Kuring, Xiaomeng Geng, Peter A. Hoeher, Marco Liserre, Rüdiger Quay, Sibylle Dieckerhoff
Simultaneous power and data transmission is possible by data injection into control signals of power converters without additional hardware. In this letter, a modified analog hysteretic current control is discussed, which combines data transmission with efficient quasi-square-wave zero-voltage switching. A half-bridge GaN converter with 99.1% efficiency is investigated with respect to power conversion
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A Robust Wireless Power Transfer System With Self-Alignment Capability and Controllable Output Current for Automatic-Guided Vehicles IEEE Trans. Power Electr. (IF 6.7) Pub Date : 2023-07-20 Xiaofei Li, Cheng Wang, Heshou Wang, Xin Dai, Yue Sun, Aiguo Patrick Hu
In this article, a robust wireless power transfer system is proposed with self-alignment capability and controllable output current characteristics for static charging of automatic-guided vehicles (AGVs). A reconfigurable circuitry is designed to work initially in an inductor–capacitor–capacitor-series compensation mode for achieving magnetic field self-alignment, then switched to the LCC – LCC configuration
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All-Detuned Three-Coil Configuration for Advantages in Inductive Power Transfer Systems IEEE Trans. Power Electr. (IF 6.7) Pub Date : 2023-07-19 Zirui Yao, Shiying Luo, Xuan Wei, Zhuhaobo Zhang, Guanxi Li, Xiangwei Shen, Ni Zhang, Philip T. Krein, Hao Ma
In inductive power transfer systems, some applications require working at higher power levels, transferring power with longer air gaps, and meeting geometric constraints. Many situations will decrease system coupling and affect performance. In this article, a three-coil configuration based on an all-detuned design is proposed to optimize the overall coupling and system efficiency. Primary and tertiary
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Comparative Studies of Front-End Model Predictive Control for Direct Inductive Power Transfer Systems IEEE Trans. Power Electr. (IF 6.7) Pub Date : 2023-07-19 Huiwen Xiao, Yun Yang, Kaiyuan Wang, Jiayang Wu
In this article, two transmitter-side model predictive control (MPC), namely, a model predictive-based phase shift control (MPPC) and a model predictive-based frequency control (MPFC), are proposed for direct inductive power transfer (IPT) systems. Both MPC strategies are empirically verified to have better dynamic responses than the proportional-integral (PI)-based counterparts using inexpensive digital
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Fast and Distortion-Free Short-Circuit Detection and Protection Scheme With Fault Ride-Through Capability Applied to Four-Leg VSI IEEE Trans. Power Electr. (IF 6.7) Pub Date : 2023-07-19 Elías Oggier, Germán G. Oggier, Fernando Botterón, Marcelo Llomplat, Guillermo O. García
The three-phase four-leg (3P4L) voltage source inverter (VSI) with LC output filter is a suitable transformer-less topology to feed nonlinear and unbalanced loads in four-wire applications. Both symmetrical and asymmetrical short circuits can occur on the load-side. Moreover, due to the low thermal inertia of semiconductors, fast short-circuit protections are necessary to avoid damage by overheating
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Optimizing Levitation Devices for Wireless Power Transfer: An Fe-NCS Grid Structure Approach IEEE Trans. Power Electr. (IF 6.7) Pub Date : 2023-07-18 Fengxian Wang, Qingxin Yang, Xian Zhang, Zhaoyang Yuan, Xuejing Ni
This article proposes a solution for driving a microdisplacement device in the coupling space of a wireless power transfer system. The solution involves using a levitation device made of a combination of Fe-based nanocrystalline alloys (Fe-NCS) and aluminium. The dynamic model of the levitation device is analyzed to understand the electromagnetic force involved, and an optimized grid-type Fe-NCS structure
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A MTPA and Flux-Weakening Curve Identification Method Based on Physics-Informed Network Without Calibration IEEE Trans. Power Electr. (IF 6.7) Pub Date : 2023-07-18 Haowen Wang, Wei Sun, Dong Jiang, Ronghai Qu
In order to improve the efficiency, interior permanent magnet synchronous motors (IPMSMs) or the synchronous reluctance motors (SynRMs) need to be calibrated to obtain the maximum torque per ampere (MTPA) and flux-weakening (FW) curves. In industrial application, there are different types of IPMSMs and SynRMs. It is expensive and time-consuming to build test benches to calibrate each motor. In this
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Flexible Time-Delay Designs for Harmonic Sequence Filter/Extraction: A Further Generalization of Two-Sample Methods IEEE Trans. Power Electr. (IF 6.7) Pub Date : 2023-07-18 Hoach The Nguyen, Mohamed Shawky El Moursi, Khalifa Al Hosani, Ahmed Al Durra, Ameena Saad Al-Sumaiti
Time-delay is an inevitable operator causing slow dynamic response of related systems employing harmonic sequence (HS) filters/extractors. This letter presents a new concept of flexible time-delay designs as a further generalization of two-sample methods (i.e., delayed signal cancellation) to improve the dynamic response and robustness of HS filters/extractors. The new concept offers flexible designs
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Soft-Switching Control for a Resonant Four-Switch Inverting Buck–Boost DC/DC Converter With Wide Voltage Range IEEE Trans. Power Electr. (IF 6.7) Pub Date : 2023-07-18 Faheem Muhammad, Xinke Wu, Jinxu Yang, Lin Tian, Tianji Liu
A resonant four-switch inverting buck–boost converter is a good choice for dc/dc applications that require an inverting voltage solution. A soft-switching control scheme with four segments of resonance current has been examined using duty ratio and phase shift as control variables. As a result, the rms value of the resonance current is low compared with discontinues current mode (DCM), which is directly
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A Wireless In-Flight Charging Range Extended PT-WPT System Using S/Single-Inductor-Double-Capacitor Compensation Network for Drones IEEE Trans. Power Electr. (IF 6.7) Pub Date : 2023-07-17 Yu Gu, Jiang Wang, Zhenyan Liang, Zhen Zhang
To address the special challenges for drone wireless in-flight charging systems, namely the continuous fluctuation of mutual inductance, large charging distance, and limited payload of the pickup, a novel high-order primary-series (S) and secondary-single-inductor-double-capacitor (SLDC) topology for parity-time (PT) symmetric wireless power transfer (WPT) system is proposed in this article. The reduced-order
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High-Efficient Operation for Modular Multilevel Resonant DC–DC Converters in Medium Voltage Applications With Wide Input Range and Wide Load Condition IEEE Trans. Power Electr. (IF 6.7) Pub Date : 2023-07-17 Jing Sheng, Xin Xiang, Boliang Li, Rui Lu, Chushan Li, Xiaotian Zhang, Wuhua Li, Xiangning He
The modular multilevel resonant dc–dc converters (MMRDCs) are becoming one of the most attractive candidates in medium voltage applications, but they would usually face technical challenges in high-efficient operation with wide input range and wide load condition. First, this article provides an elaborate review of the voltage control dimensions in MMRDC, and their corresponding operation principles
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Common-Mode Noise Reduction and Capacitor Voltage Auto-Balance Using Bridged Midpoints and Coupled Inductor in a 3-L Buck-Boost Converter IEEE Trans. Power Electr. (IF 6.7) Pub Date : 2023-07-17 Yuliang Cao, Boran Fan, Yijie Bai, Vladimir Mitrovic, Dong Dong, Rolando Burgos, Dushan Boroyevich
The symmetry principle has been widely used to mitigate the power stage common-mode (CM) emissions. Based on a symmetrical three-level (3-L) buck-boost converter in [1], this letter finds a midpoints interconnection that can reduce the CM noise further and realized the dc-link voltage auto-balance at the same time. By bridging the input and output midpoints, the noise is trapped inside the power converter
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Power Sharing and ZSCC Elimination for Parallel T-Type Three-Level Rectifiers Based on Model-Free Predictive Control IEEE Trans. Power Electr. (IF 6.7) Pub Date : 2023-07-14 Bo Long, Jiahao Zhang, Xingyu Li, Jose Rodriguez, Josep M. Guerrero, Yunlong Teng, Kil To Chong
Due to its outstanding merits, such as quick response, multiobjective optimization, and simple principle, model predictive control (MPC) has been widely used in power converters and motor-drive systems. However, MPC highly relies on the precise circuit parameters and control models, and cannot be used in unknown circuit relationships. To solve this issue, this article presents a model-free predictive
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Health Monitoring of Output Capacitor in Boost Converters Based on Dissipation Factor IEEE Trans. Power Electr. (IF 6.7) Pub Date : 2023-07-14 Moein Ghadrdan, Saeed Peyghami, Hossein Mokhtari, Frede Blaabjerg
The purpose of this letter is to present a simple technique for monitoring the health status of the output capacitor of a boost converter. The majority of previous studies have measured an electrolytic capacitor equivalent series resistance or capacitance to track its health condition. However, this letter suggests a new approach based on the accurate measurement of the dissipation factor. The effectiveness
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Model Predictive Torque and Force Control for Switched Reluctance Machines Based on Online Optimal Sharing Function IEEE Trans. Power Electr. (IF 6.7) Pub Date : 2023-07-14 Lefei Ge, Zizhen Fan, Nan Du, Jiale Huang, Dianxun Xiao, Shoujun Song
Although the torque and radial force ripples are two important causes of unwelcomed vibration in switched reluctance machines, the suppression of these ripples is usually contradictory. To address this issue, we propose a model predictive torque and force control (MPT&FC) method. First, the torque and force sharing functions are constructed based on the flux-linkage curve, following which the sharing
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Static and Dynamic Characteristics of a 1200-V/22 -mΩ Normally-Off SiC/GaN Cascode Device Built With Parallel-Connected SiC JFETs Controlled by a Single GaN HEMT IEEE Trans. Power Electr. (IF 6.7) Pub Date : 2023-07-14 Gang Lyu, Jiahui Sun, Jin Wei, Kevin J. Chen
A silicon carbide junction field effect transistors (SiC-JFETs) /gallium-nitride high electron mobility transistor (GaN-HEMT) hybrid power switch is proposed with scaled-up current rating enabled by parallel-connected high-voltage (HV, i.e., 1200 V) SiC-JFETs controlled by a single low-voltage enhanced-mode GaN-HEMT in a cascode configuration. Only one set of gate driver (for the GaN HEMT) is required
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Electronic-Embedded Transformer Based DC Transformer With Trapezoidal Current and Natural Current Sharing IEEE Trans. Power Electr. (IF 6.7) Pub Date : 2023-07-13 Yuliang Cao, Dong Dong
By incorporating an integrated low-voltage full bridge Cao et al., the concept of an electronic-embedded transformer (EET) offers a straightforward means of achieving high-frequency, high-power fixed-gain isolated dc–dc conversion, known as a dc transformer (DCX), through parallel operation of EET units with natural current sharing. However, EET-DCX, characterized by triangular transformer current
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Aliasing Suppression With Negligible Phase Lag for Multi-Sampled LCL-Type Grid-Tied Inverter IEEE Trans. Power Electr. (IF 6.7) Pub Date : 2023-07-13 Tingkang Wang, Wenxi Yao, Chengmin Li, Huan Yang, Wuhua Li
Multisampling is a very effective and direct way to reduce control delay, which can greatly improve the bandwidth and stability margin. However, it will introduce high-frequency switching harmonics (SHs), resulting in low-frequency aliasing in regular sampling puslewidth modulation (PWM). The harmonic suppression of existing filters inevitably brings phase lag, which weakens the advantage of multisampling
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Finite Set Sensorless Control With Minimum a Priori Knowledge and Tuning Effort for Interior Permanent-Magnet Synchronous Motors IEEE Trans. Power Electr. (IF 6.7) Pub Date : 2023-07-12 Anian Brosch, Fabio Tinazzi, Oliver Wallscheid, Mauro Zigliotto, Joachim Böcker
By applying rotor angle sensorless control methods, the costs of the electrical drive can be decreased while its reliability is increased. Traditionally, the design of both the rotor angle estimator and the drive controller require a detailed motor model and manual tuning leading to significant effort by human experts. In this article, a rotor anisotropy-based sensorless control scheme for interior
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An Improved Passivity-Based Direct Power Control Strategy for AC/DC Converter Under Unbalanced and Distorted Grid Conditions IEEE Trans. Power Electr. (IF 6.7) Pub Date : 2023-07-12 Qicai Ren, Alian Chen, Jingyang Fang, Xi Liu, Tong Liu, Guanguan Zhang, Chenghui Zhang
AC/DC power converter is the momentous interface of the power router, which is responsible for maintaining the dc bus voltage stability. However, under unbalanced and distorted grid voltage conditions, there are voltage ripples in the dc bus, and grid currents will also be severely distorted. Accordingly, this article proposes an improved passivity-based direct power control (IPBDPC) strategy based
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Abnormal Turn-ON Phenomenon of Large-Size and High-Voltage Reverse Blocking IGCT IEEE Trans. Power Electr. (IF 6.7) Pub Date : 2023-07-12 Chunpin Ren, Jiapeng Liu, Jinpeng Wu, Jianhong Pan, Biao Zhao, Zhanqing Yu, Rong Zeng
The large-size and high-voltage reverse blocking integrated gate-commutated thyristor (RB-IGCT) is available for the hybrid line-commutated converter topology to effectively reduce the commutation failure probability. However, an abnormal turn -on phenomenon is observed in the fabricated 8-kV RB-IGCT samples, which potentially hinders the normal current switching and has not been investigated yet.
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Detuned LCC/S-S Compensation for Stable-Output Inductive Power Transfer System Under UltraWide Coupling Variation IEEE Trans. Power Electr. (IF 6.7) Pub Date : 2023-07-12 Peng Zhao, Junrui Liang, Haoyu Wang, Minfan Fu
This letter proposes an inductive power transfer system to maintain stable output power in an ultrawide coupling variation range. Taking the series–series compensation as an example, the theoretical limit of detuned compensation is studied by defining two general impedance factors. Based on the circuit transformation, various detuned compensations can be studied in a unified manner, and then used to
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Dual-Source High-Performance Active Switched Quasi-Z-Source Inverter for Fuel Cell Hybrid Vehicles IEEE Trans. Power Electr. (IF 6.7) Pub Date : 2023-07-12 Thang Van Do, Mohsen Kandidayeni, João Pedro F. Trovão, Loïc Boulon
To lower the circuit complexity and required space, and to prolong the lifetime of the hybrid energy storage system, a Z-source inverter (ZSI) topology is a suitable substitute for the traditional two-stage ones and has drawn attention in fuel cell (FC) hybrid electric vehicles (HEVs). This replacement requires a suitable selection of passive components for the Z-source network (ZSN) and a strict control
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Reducing the Input Capacitance to Minimize the Right-Half-Plane Zero Effect for Buck Converters in Wireless Power Receiver Systems IEEE Trans. Power Electr. (IF 6.7) Pub Date : 2023-07-11 Shuai Dong, Jie Liu, Baichuan Zhang, Chen Lin, Chunbo Zhu
Buck converters are widely used in wireless power receiver systems for voltage conversion, impedance matching, and power regulation. However, when the receiver's resonant network has a current-source nature, it introduces a right-half-plane zero in the control-to-output transfer function, which adversely affects the system's transient performance. This article presents a proposed solution by reducing
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Compensated State-Space Model of Diode-Clamped MMCs for Sensorless Voltage Estimation IEEE Trans. Power Electr. (IF 6.7) Pub Date : 2023-07-11 Nima Tashakor, Yi Zhang, Shady Banana, Frede Blaabjerg, Stefan Goetz
Modular multilevel converters are well known in the energy sector. Generally, their stable operation is at the expense of numerous sensors, communication burden, and computationally expensive balancing strategies that challenge their expansion to cost-driven applications. Hence, introducing a sensorless voltage-balancing strategy with a simple controller is an attractive objective. Diode-clamped modular
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Enhanced Fault-Tolerant Operation Strategy for Cascaded Vienna Front-End Based Solid-State Transformer IEEE Trans. Power Electr. (IF 6.7) Pub Date : 2023-07-11 Lin Zhu, Chushan Li, Huan Yang, Wuhua Li, Xiangning He
Solid-state transformer (SST) based on Vienna cell features with less semiconductor devices and high-power density, providing a promising concept for super charging stations and uninterruptible power supply for data centers. However, the presence of numerous switching devices in SSTs raises the possibility of faults. Bypassing faulty cells not only adds to the cost by requiring additional bypass switches
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An Improved Bidirectional Dual-Output Multilevel Buck PFC Rectifier With Wide Load Scalability and Stability IEEE Trans. Power Electr. (IF 6.7) Pub Date : 2023-07-11 Rahul Patil, Saravana Prakash P
Power converters with multiobjective functionality have ample scope of research in the power electronics field. As a consequence, a bidirectional multilevel buck rectifier (BMBR) is proposed for power factor correction applications. Unlike the existing bidirectional multilevel rectifiers, the proposed BMBR has excellent load scalability and stability. In addition, the proposed BMBR synthesizes multilevel
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State-Space Modeling and Control of Flying-Capacitor Multilevel DC–DC Converters IEEE Trans. Power Electr. (IF 6.7) Pub Date : 2023-07-11 Ziyu Xia, Kishalay Datta, Jason T. Stauth
Hybrid and resonant switched-capacitor converters show promise in a number of power management applications, but are subject to a range of challenges in control and implementation. In particular, hybrid topologies use a network of switched flying capacitors to reduce voltage stress on switching devices and energy storage requirements of inductor(s). However, the increased order of system dynamics can
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Self-Training Intelligent Predictive Control for Grid-Tied Transformerless Multilevel Converters IEEE Trans. Power Electr. (IF 6.7) Pub Date : 2023-07-11 Mohammad Babaie, Kamal Al-Haddad
Literature reviews affirm the constructive influence of the intelligent predictive multiobjective control (IPMOC) on the power quality, power ancillary services, efficiency, and reliability expected from grid-tied transformerless multilevel converters. Regarding, this article contributes to developing the IPMOC concept in terms of training, autonomous power management, and real-time harmonic mitigation
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A High Step-Down Partial Power Processing Switched-Capacitor Converter for Wide Input Voltage Range Medium Voltage DC Applications IEEE Trans. Power Electr. (IF 6.7) Pub Date : 2023-07-10 Renfeng Guan, Zhixing He, Qiqi Wei, Lingqing Fang, Zongjian Li, Zhiyao Shen, Junjie Qin, Ben Zhou, Yandong Chen
This article proposed a partial power processing switched-capacitor converter (P 3 SCC) for medium voltage dc applications, where a high-frequency switched-capacitor converter (HFSCC) operating in a series resonant state is used to transmit most of the power, and the remaining small power is regulated by a partial power processing phase-shift full bridge (P 4 SFB). Different from the conventional switched
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An Automated Field-Circuit Coupling Simulation Method Based on PSpice-MATLAB-COMSOL for SiC Power Module Design IEEE Trans. Power Electr. (IF 6.7) Pub Date : 2023-07-07 Yayong Yang, Zhiqiang Wang, Yuxin Ge, Guoqing Xin, Xiaojie Shi
Multiphysics simulation software is indispensable for silicon carbide (SiC) power module design. Lacking interface between circuit simulation software and thermal-fluid-mechanical simulation software poses challenges for accurate design of the power modules. In this article, an automated field-circuit coupling simulation method based on the self-developed COMSOL-PSpice interface software is proposed
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Closed-Form Solution for ZVS and Minimum Current of Cascaded Buck + Boost Converters Eliminating Instantaneous Inductor Current Detection IEEE Trans. Power Electr. (IF 6.7) Pub Date : 2023-07-07 Sirun Zhu, Weijian Han, Jianliang Chen, Qing Liu
Existing quadrilateral-current-based zero voltage switching (ZVS) control methods of cascaded buck + boost converters (CBBCs) rely on instantaneous inductor current detection, posing a demanding requirement on the bandwidth of current sensors in high-frequency applications with hundreds of kilohertz. Also, with power level increasing, such methods become more sensitive to switching noise. To overcome
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State Plane Feedforward Control for LLC Converter With Geometric Simplification IEEE Trans. Power Electr. (IF 6.7) Pub Date : 2023-07-07 Jie Chen, Lingfeng Jiang, Linxiao Gong, Jiahao Li, Yunfeng Peng, Yong Wang
This article proposes a state plane feedforward (SPF) control to improve the dynamic response performance of LLC converters. In contrast to the traditional state-plane-based control, the proposed SPF control aims at the steady state analysis of state plane. The proposed SPF control predicts the switching period under specific operating conditions through state plane analysis with geometric simplification
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Active Power Decoupling by Closed-Loop Control of Power Oscillations for a Bidirectional Single-Phase DC–AC Converter IEEE Trans. Power Electr. (IF 6.7) Pub Date : 2023-07-06 Roberto A. Fantino, Claudio A. Busada, Jorge A. Solsona
A control strategy for the active power decoupling in a single-phase full-bridge-based bidirectional dc–ac converter is proposed in this work. An ac-side auxiliary-circuit three-leg topology is used for the implementation. The proposal makes use of the instantaneous power theory for three-phase systems, applied to single-phase systems. A closed-loop control in the power domain is implemented, by matching
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Compact Wireless Energy Pick-Up System Coupled Gate-Drive for Medium-Voltage Power Devices in Modular DC Solid-State Circuit Breakers IEEE Trans. Power Electr. (IF 6.7) Pub Date : 2023-07-05 Shuyan Zhao, Yao Wang, Reza Kheirollahi, Yang Zheng, Zilong Zheng, Shervin Salehi Rad, Hua Zhang, Fei Lu
This article presents a compact inductive power transfer (IPT) based wireless energy pick-up system (WEPUS) coupled gate-drive for medium-voltage power devices in modular direct current (dc) solid-state circuit breakers (SSCBs). There are two major contributions. First, an LCL-S compensated IPT system with constant voltage outputs is applied as auxiliary power supply to power ten submodules in SSCBs