Simulation and verification of two-stage converter with sinusoidal filter

Two-Phase Induction Motor (TPIM) with or without output sinusoidal LC filter. Simulation and experimental verification of proposed system is presented. The simulation models of TPIM and 2nd order LC filter are created in computing program Matlab.SIMULATION AND VERIFICATION OF A TWO-STAGE CONVERTER WITH A SINUSOIDAL FILTER
The article presents a matrix converter powering a two-phase induction motor. The converter can operate with or without an LC sinusoidal filter. Simulation results and laboratory verification of the converter powering an induction motor are presented in the article. Simulation models of the two-phase induction motor and the second-order LC filter are created in the Matlab environment.
1. INTRODUCTION – TWO-STAGE
Such a system usually consists of a single-phase voltage inverter, an AC interlink, an HF transformer, a 2-phase converter, and a 2-phase AC motor. Due to the AC interlink, a direct converter (cyclo-converter or matrix converter) is the best choice. One of the possible schemes without a transformer and using a 2-phase direct matrix converter is depicted in Fig. 1, [1], [2].
A system with a matrix converter and a high-frequency AC interlink can generate a two-phase orthogonal output with both variable voltage and frequency [3] – [5]. The switching frequency of the converter is quite high (~tens of kHz). Since the voltages of the matrix converter system should be orthogonal, the second phase converter is the same as the first one and its voltage is shifted by 90 degrees. The proposed scheme of the two-stage two-phase converter system is shown in Fig. 3a. Basically, it consists of a single-phase fast IGBT inverter and two single-phase matrix converters, both in a full-bridge connection. (…)

Simulation and verification of two-stage converter with sinusoidal filter – PDF file for download