ゼロ電圧スイッチング制御法を適用したインダイレクトマトリックスコンバータの波形改善

概要

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This paper proposes a method for error compensation in an indirect matrix converter using zero-voltage switching (ZVS). ZVS helps reduce the junction temperature of switching devices on the inverter-stage by reducing the switching loss of the inverter. However, an input current error is generated by the commutation operation. In this paper, two compensation methods are proposed: one is used for compensating errors in the software commands (command error compensation), and the other is used for compensating errors in the pulse width (pulse width error compensation). The efficiency of the compensation methods have been confirmed by the experimental results. The total harmonic distortion (THD) of the input current using the command compensation and pulse width compensation is 1.5% and 1.4%, respectively. These results prove effectiveness of the proposed compensation methods.