Abstract
Traditionally, multi-step commutation strategy is used in high frequency link matrix rectifiers (HFLMR), however, the multi-step will finally result in high switching loss and greatly influence the performance of converter. While the traditional one-step commutation strategy is neither suitable for HFLMR since the modulation includes zero vector and it requires extra hardware detection circuit. To solve this problem, a novel one-step commutation strategy is proposed to realize safe commutation strategy of high frequency link matrix rectifier, which can reduce switching loss and reduce the influence on the performance of converter to minimum. Moreover, the proposed strategy can reduce switching loss by controlling single switching tube as well as optimizing the sequence vector synthesis. Finally, the correctness and effectiveness of the improved commutation strategy is verified by the Matlab/Simulink simulation model. The simulation validates that the novel strategy can realize the safe commutation and improve its input and output features.
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