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This paper proposed a new soft-switched non-isolated bidirectional converter for energy storage systems. The hard-switched non-isolated bidirectional converter is improved with additional soft-switch cell incorporated with auxiliary active switches, diodes and passive elements. The main operating characteristics of this topology are to transfer the power flow in both directions from low voltage to...
This paper presents a novel generalized topology of a multilevel inverter. The proposed topology is obtained by extending the developed H-bridge topology. The proposed topology is competent to generate the optimum number of output voltage levels by using minimum number of dc voltage sources. The topology offers reduced value of voltage stress on semiconductor power switches. Utilization of dc voltage...
This paper deals with a computing simulation for an offshore wind energy system taking into account the influence of the marine waves action throughout the floating platform. The wind energy system has a variable-speed turbine equipped with a permanent magnet synchronous generator and a full-power fivelevel converter, injecting energy into the electric grid through a high voltage alternate current...
This paper presents a three-phase DC-AC converter with an optimized number of levels per number of switches. Each phase of the proposed converter includes four controlled power switches and it is able to generate five levels. The most significant characteristics of the proposed converter are: (i) reduced number of semiconductor devices, while keeping a high number of levels at the output side of each...
The internal dynamics governing the modular multilevel converter can be described by considering the total capacitor's voltages of each arm and the circulating currents. In this study, dynamics of the total capacitor voltage of the modular multilevel converter (MMC) is analyzed. Depending on the internal control approach adopted which ensure a symmetrical energy distribution in the arms of the converter,...
This paper presents a modeling of IGBTs with a focus on voltage dependency of capacitances between terminals of the IGBT. The proposed model is based on a physics-based IGBT model for circuit simulators to get accurate switching waveforms by taking account of the variable capacitances depending on the voltage between the terminals of the IGBT model. The basic feature is that the simulation accuracy...
A novel anti-ESD TGFPTD (Trench Gate and Field Plate and Trench Drain) SOI LDMOS was proposed firstly for improve ESD robustness of TGFPTD SOI LDMOS in this paper. The proposed device was obtained by introducing an additional n+ implantation and rapid thermal annealing into the widen p-well region of conventional TGFPTD SOI LDMOS. 2D simulation of the proposed device upon a negative current pulse...
Voltage Source Converter (VSC) based High Voltage Direct Current (VSC-HVDC) transmission technology is a novel transmission technology on the basis of pulse width modulation (PWM) technology and fully-controlled power electronics devices. The output performance of VSC mainly depends on its modulation algorithm. A new kind of SVPWM algorithm based on 60° coordinate system for three-level VSC is introduced...
Due to always increasing commutation speed, parasitic parameters such as interconnection inductances and stray capacitors are directly linked to voltage surge, resonance and electromagnetic interference. To guide the selection of power components, assess low-inductive film capacitors and laminated bus bar, and in the end realize the high power density and high reliability for electrical vehicle inverters,...
This paper is concerned with the design and simulation of a pulse width modulation (PWM) rectifier for three-phase Permanent Magnetic motor drive. Based on the mathematical model of PWM rectifier, the dual-close-loop engineering design with decoupled feed-forward control is applied in the 3-phase voltage source rectifier. The objective to be reached is to realize unity power factor at the input ac...
The design of planar busbar as a must part of any present high power converter is particularly fine due to all electromagnetic phenomena which can not be easily predicted with appropriate simulation means. Among the numerous constraints which apply to this component, current sharing between all paralleled components (power IGBT modules and capacitors) and stray inductances responsible of both over-voltages...
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