This paper presents a study on the influence of different rectifiers on a super-high-speed permanent magnet generator (SHSPMG), which is used in a micro-gas turbine distributed generation system. Taking a 117 kW, 60,000 r/min SHSPMG as an example, the influence of PWM and uncontrolled rectifiers on the generator performances were studied comparatively. The current harmonics and its total harmonic distortion

With growing decentralized power generation, medium-voltage (MV) dc-dc converters are becoming increasingly important. A three-phase dual-active bridge (DAB3) is a promising topology for high-power MV applications. The semiconductor devices used in such converters at multi-megawatt level tend to be slow in switching. Hence, a considerable dead time between switching instants is required to avoid shoot-through

In this research paper, an Advanced Harmonic Filter (AHF) is designed and implemented for variable frequency drives of 55 kW rating. The AHF consists of a line reactor (Lo) and a Double Tuned Filter (DTF) to mitigate the 5th and 11th order harmonics of the drive current. The performance of AHF is verified using the MATLAB/Simulink platform. The complete design has been validated with experimental results

This paper presents the modelling of the DC–DC multilevel modular converter (DC–DC MMC) with half-bridge sub-modules and the control based on the inversion of its model. The DC–DC MMC presents many advantages such as its modularity, the absence of capacitors on the DC-bus voltage and a low switching frequency. This topology also preserves the intrinsic disadvantages of the MMC as the complexity controlling

This paper presents a power balance technique for high power welding machines with a modular design using a common-mode-coupled inductor (CMCI). The voltage applied across the CMCI can automatically adjust current slopes of transformer primary currents to be equalized so that the power transfer between power modules can be balanced even in the structure in which both the primary side and secondary

This paper proposes an efficient LED lamp converter circuit incorporating dimming feature and multiple lamp independent control. The converter consists of a half-bridge resonant converter in series with a DC source. This converter operates at 200 kHz. Soft switching is employed with resonant power conversion. With modulation of the low frequency pulse width, the dimming feature is incorporated. The

In this article, predictive torque control (PTC) of multi-level inversion (MLI) fed open-end winding induction motor (OEWIM) drive has been developed with predictive angle control technique. The classical PTC of induction motor drive involves direct control of torque and flux. The combination of direct torque control (DTC) with model predictive control (MPC) offers all the features of classical DTC

Controlled Diode Bridge Clamped (CDBC) three level inverter configuration is the optimized version of T-type voltage source inverter in terms of power switches and their associated gate driver components. After a brief introduction of CDBC VSI, this paper implements the concept of Z-source inverter into this configuration. The three level SVPWM technique has been used for the generation of gating pulses

In this paper, two new structures are proposed for diode-assisted extended-boost continuous-current quasi-Z-source inverter (qZS). In the proposed structures to reduce the capacitors and diodes voltage stresses, a new switched inductor structure is used. Voltage gains of inverters in the proposed and conventional topologies have the same magnitude. Moreover, the startup inrush current in the proposed

This paper presents a modified topology for asymmetric modular multilevel inverter as a fundamental block. It consists of eight switches (including six bidirectional-conducting unidirectional-blocking switches and two bidirectional-conducting bidirectional-blocking switches) and four DC sources with unequal magnitudes, which generates 13-level output voltage. The proposed topology offers special features

The proposed light-controlled cascode is a power electronic device (or circuitry) which can be turned-on and -off by optical excitation. In contrast to the light-triggered thyristor, which can optically be turned-on but not -off, the proposed device allows optical turn-on and -off. Also, it allows a scalability of the blocking voltage by the extension to a light-controlled supercascode [1] which is

Nowadays there are vast enlargements in the grid applications; the control strategy of power electronics systems has also spread their locality extensively. Single processor of complex hardware is used in the conventional method, to generate the control strategy for microgrid. To avoid this issue, we cultivate a low-power microgrid with the help of NoC. Reconfigurable Double Tailed Sense Amplifier

We propose a resource efficient precision transient circuit simulator approach without time step for solving the systems of differential equations. The method is notably suitable for optimization and worst-case dimensioning of small-scale electronic circuits. A closed-form analytic solution is computed for each of the electronic circuit states. Numerical integration is not required, and therefore,

Switched reluctance motors operate at very high-speed ranges. At high speed, the switched reluctance motor drives are losing the capability of high torque production. In this paper, a novel method is proposed for controlling high speed switched reluctance motor using both continuous and discontinuous conduction modes. The proposed method controls the machine torque in continuous-conduction mode using

This paper presents a new control scheme for the ac-dc-ac nine-switch converter (NSC) with induction motor operated at constant frequency. The NSC at constant frequency operates optimally and its application for induction motor drive with re-active power compensation is proposed. In industries for various applications, induction motors are operated at constant frequency but at different loading conditions