Simulation of buck or boost rectifier using Single Phase Matrix Converter with reduced switch count
Single Phase Matrix Converter (SPMC) operating as buck or boost rectifier with reduced switch count is illustrated in this paper. Six switches can be used in the proposed configuration as compared to eight switches in conventional SPMC, by removing two unused switches for buck or boost rectifier operation. Both buck and boost rectifier uses same circuit topology with six switches and R load. The operation of both buck and boost rectifier are observed and variation of output voltage with modulation index is analyzed. To synthesis the output pulse width modulation (PWM) technique is used. Buck and boost rectifier circuits are modeled using MATLAB/Simulink and selected simulation results are shown in this paper.
Using Buck-Boost Rectifier with Single-Phase-Matrix Converter to Reduce Switch Count Operation
Recently, the development of advanced power semiconductor devices has made widespread use of power switching circuits and other power electronics applications in commercial and industrial environments. This paper focuses on Single Phase Matrix Converter (SPMC) as a AC-DC boost rectifier and AC-DC buck rectifier. The SPMC was operated in the desired mode using a single driver circuit. Insulated Gate Bipolar Transistors (IGBTs) are used in the power circuit as switching devices to implement SPMC topology. Switching signals are obtained by Sinusoidal Pulse Width Modulation (SPWM) technique. The simulation is carried out using MATLAB / Simulink.
Comparison of bi-directional switch components for direct AC-AC converters
The objective of this paper is to assess the performance of bi-directional switch components for direct AC-AC (matrix) converter applications. Three 2-phase to 1-phase matrix converters will be constructed, each with different bidirectional switch components. The three bi-directional switch structures to be considered are: silicon (Si) diode-Si IGBT, silicon carbide (SiC) diode-Si IGBT and Si reverse blocking IGBT (RB-IGBT). All of the commutation scenarios possible in a matrix converter topology using two or four-step commutation are studied. The improved reverse recovery performance of the SiC Schottky diodes is assessed with reference to measured switching waveforms. The affect of the three different switch structures on the overall performance of the matrix converter with particular attention to power circuit losses is investigated.