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Hybrid and all-electric vehicles have gained significant market share and are expected to see rapid development over the next few years. Traction force in vehicles can be generated by the powertrain unit in different configurations. Several automotive companies are investing in electrification and aiming for a paradigm shift in powertrain. Simultaneously, universities and research institutes are trying

To avoid oscillation phenomena of the interleaved buck converter with coupled inductors (IBCCIs) under continuous conduction mode (CCM), the stability of IBCCI is analyzed in this article. First, a bilinear discrete-time model of the IBCCI is established, and the effect of converter and controller parameters on stability can be revealed based on bifurcation diagrams, Jacobian matrix, and eigenvalue

This article proposed a current-sensorless control scheme for the single-phase uninterruptible power supply (UPS) inverter under nonlinear load. Different from the existing current-sensorless literature, the information of load current can be obtained by the designed adaptive laws. It is meaningful for the system’s security and reliability. Under the assumption that the load is a periodic ideal-independent

This article proposes a motion planning approach for autonomous electric vehicles to generate an appropriate planned path according to the time-varying surrounding information. This approach utilizes the proposed novel sine resistance network to mesh the road with the aim of improving the planned path smoothness, which has the capability of generating a continuous-curvature planned path that contributes

Ride-hailing electrification is made challenging by a variety of factors, including limited driver access to overnight charging and a nascent network of public direct-current fast charging (DCFC). This article projects the DCFC infrastructure needed to electrify ride-hailing across 384 cities in the United States. Research leveraging a novel infrastructure projection tool, Electric Vehicle Infrastructure

Under the pressure of climate change and the energy crisis, electric vehicles (EVs) have experienced a marked growth in many countries recently. However, the environmental benefits of EVs cannot be achieved if the charging power from the electricity grid is still mainly provided by fossil-fueled power plants. How to construct a low-carbon fast-charging system has become an emerging research topic.

The magnetic field modulated variable speed permanent magnet (PM) brushless motor (MFMVS-PMBM) is a new type of power shunting device for hybrid electric vehicles (HEVs), which is composed of a magnetic gear (MG) and a PM brushless motor (PMBM). Compared with the conventional double rotor motor, the MFMVS-PMBM shows a more complex electromechanical energy conversion relationship due to its special

In order to further improve the energy-saving and voltage stabilizing effect of the stationary energy storage system (ESS), this article tries to adopt the battery-supercapacitor (SC) hybrid ESS (HESS) as stationary ESS. The advantages of stationary HESS are verified by an example. An adaptive energy management framework for stationary HESS is proposed. A power distribution strategy is proposed to

To apply the actual fuel cell hybrid system, improve the efficiency of fuel cells, and reduce the operating cost, the model predictive control (MPC)-based energy management strategy (EMS) combining self-trending prediction and the subset-searching algorithm is proposed in this article. Compared with the traditional MPC, the proposed EMS reduces the error of speed prediction and simplifies the process

This article develops a model to plan energy-efficient speed trajectories of electric trucks in real time by considering the information of topography and traffic ahead of the vehicle. In this real-time control model, a novel state-space model is first developed to capture vehicle speed, acceleration, and state of charge. An energy minimization problem is then formulated and solved by an alternating

The design of the thermal management solution has a significant impact on the reliability and power density of power electronics (PEs). As the electric vehicle (EV) industry moves toward increasing the efficiency and output power, the cooling system must effectively remove the excess heat dissipated in PEs. The main heat-generating components are the semiconductor switches, but other components, such

The traction reflux characteristics of an electric multiple unit (EMU) are directly related to its safe operation. It is of great engineering value to improve the reflux characteristics by improving the protective grounding system. The typical Chinese EMU with the eight-car power distribution marshaling and decentralized grounding model is taken as the research object of this study, and the circuit

This article proposes a new double-rotor permanent magnet switched reluctance motor (DR-PMSRM). In the proposed topology, the rotors do not include any coils or PMs; therefore, DR-PMSRM inherits the advantages of conventional SRMs. Splitting teeth for each stator pole has resulted in a remarkable increase in the motor’s torque density. In addition, the use of small PMs between the two teeth of the

This article proposes a highly efficient quasi-single-stage ac–dc converter that incorporates a bidirectional switch at the secondary side of the circuit. Its attractiveness is that the proposed ac–dc converter achieves almost ZVS turn-off at high instantaneous power and low-voltage turn-off at low instantaneous power. Moreover, the secondary-side switching reduces the loss at the main switch, and

In low-voltage and high-current wireless power transfer systems (LVHC WPTSs), the loss of power loop is usually large due to the high current. More critically, the equivalent load resistance (ELR) is usually much lower than the optimal load resistance, which leads to serious heating and low system efficiency. This article proposes a new technology, which employs the current-double synchronous rectifier

In the application of bidirectional LLC -DCX converter, synchronous turn-on and turn-off modulation can be adopted to simplify the control. In view of zero-voltage switching (ZVS) performance, conventionally, the magnetizing inductance is regarded as a current source to discharge output capacitance of primary switches, neglecting the effect of secondary output capacitance and load, which leads to insufficient

A high-quality power supply is required for the proper functioning of the electric vehicle (EV) charging system. However, the voltage quality is one of the significant issues in the distribution grid. This article aims to examine the impacts of voltage disturbance on EV batteries and charging systems, and provides a fault ride-through capability (FRTC) to enhance the voltage quality. The charging system

With the increasing requirements and demands for electric machines in various applications, axial-flux machines (AFMs) attract more and more attention in recent years because of their unique merits of high power density, compact structure, and high material utilization. This article mainly investigates the topologies of AFMs and corresponding modeling methods. In general, AFMs can be classified according

The adoption of wide bandgap (WBG) devices in power converters creates challenging conducted common-mode (CM) electromagnetic interference (EMI) issues due to their fast-switching transients and high switching frequencies. This article focused on the analysis and suppression of CM EMI for WBG-enabled three-phase current-source converters (CSCs) consisting of back-to-back rectifier and inverter stages

In order to ensure the suspension stability of maglev train, the active control problems of static suspension and dynamic suspension are studied. First, the mathematical model of dynamic suspension characteristics of medium- and low-speed maglev train is established. Second, the PID controller is studied. The results show that the controller is very sensitive to time-varying disturbances such as nonuniformity

The energy consumption of electric vehicles depends not only on the traction energy but also on the thermal comfort energy. Some studies lead to the estimation of this energy consumption from real measurements on different driving and climatic conditions. However, those results rely on a large number of vehicle tests, which is time-consuming. Moreover, the impacts of the different subsystems cannot

This article proposes an improved implicit model predictive current control (IMPCC) method for permanent magnet synchronous motor (PMSM) drives. Compared to the conventional implicit MPC, the proposed IMPCC has a much lower computational burden and thus is suitable for real-time applications. Two-step optimization is employed in this method to minimize the cost function based on continuous control

This article presents a new pole-changing (PC) doubly salient permanent magnet (DSPM) motor. According to the general air-gap field modulation theory (GAFMT), the permanent magnet excitation field can be modulated by the stator and rotor teeth to a series of harmonics with different pole-pair numbers and different slot pitch angles. Thus, when the armature winding is connected and reconnected according

Practical vision-based technology is essential for the autonomous driving of intelligent hybrid electric vehicles. In this article, a hierarchical control structure is proposed, which combines you only look once-based object detection and learning-based intelligent control by deep reinforcement learning. After modeling a typical car-following scene, the leading car is detected in the driving image

Autonomous vehicles (AVs) transform traditional commuting by decreasing congestion, improving road safety, and naturally integrate better with electric controls for flexible implementation of autonomous driving technologies. Indeed, electric-powered AVs or autonomous electric vehicles (AEVs) are benefiting each other in many aspects. While autonomy brings great efficiency in driving as well as battery

A stochastic cooperative game (SCG)-based assistant fault-tolerant control (FTC) is proposed in this article for maintaining the stability of the distributed drive electric vehicle (EV) suffering actuator failure, which also takes the driver’s uncertain behavior into account. A distributed stochastic model prediction control (DSMPC) framework is leveraged to simulate the interaction among the driver

Fuel cell (FC)-battery hybrid electric vehicles (EVs) are an alternative to emergent battery EVs. Normally, a dc–dc converter is used to connect the low-voltage dc output of the FC to the high-voltage EV battery and ensure that a slow-changing unidirectional power flow is maintained from the FC. This article proposes to directly integrate the FC as one of the two energy sources in a dual-inverter-based

The dc grid system is attracting attention as a new electric power distribution method for several vessel kinds due to its high fuel efficiency compared with the ac grid. The combination of a wound rotor generator (WRG) and a diode rectifier [diode front end (DFE)] has been typically applied as a generation part of the dc grid. Still, the combination of a permanent magnet generator (PMG) and a DFE

DC-bus capacitors take up substantial space in an electric vehicle (EV) traction inverter, limiting the traction drive’s volumetric power density. Film capacitors are typically used, but other capacitor technologies with higher energy densities can help reduce the overall size. In this article, several commercial capacitor technologies are considered for use as dc-bus capacitors for EV traction inverters

Advances in machine learning inspire novel solutions for the validation of complex vehicle models and spur an easy manner to promote energy management performance of complexly configured vehicles, such as plug-in hybrid electric vehicles (PHEVs). A constructed PHEV model, based on the four-wheel-drive passenger vehicle configuration, is validated through an efficient virtual test controller (VTC) developed

There is an obvious gap between the rapid growth of battery electric vehicle (BEV) intercity travel demand and the worse deployment of charging facilities on the expressway network. With the consideration of dynamic charging demand, a bilevel model is proposed to deploy charging stations for the expressway network. The upper model aims at determining the location of charging stations and the number

In this article, three new toothed biased flux permanent magnet (PM) motors are introduced and studied, each of which has a specific arrangement of excitation (dc field/PM) and flux path (series/parallel). This results in three main structures, namely, hybrid excited toothed slot-PM (HETSPM), toothed biased flux PM (TBFPM) with series flux path, and, finally, toothed biased flux slot PM (TBFSPM) with

A permanent magnet homopolar inductor machine with a mechanical flux modulator (PMHIM-MFM) for flywheel energy storage system (FESS) is investigated. The no-load air-gap flux generated by the PM can be suppressed, and the no-load core loss can be reduced by using the MFM when the PMHIM-MFM works at an idling state, which helps to improve the energy transformation ratio of the FESS. First, the operation

Electric means of transportation have seen a rapid expansion partly due to flexibility to commuters and carbon emission reduction. However, transportation electrification is creating severe power quality problems in the utility grid. A single-phase voltage-source traction converter (VSTC) plays a vital role in high-speed train operation. However, it is partly blamed for injecting instability into the

One of the most crucial challenges faced by the Li-ion battery community concerns the search for the minimum time charging without damaging the cells. This goal can be achieved by solving a large-scale constrained optimal control problem, which relies on accurate electrochemical models. However, these models are limited by their high computational cost, as well as identifiability and observability