A General Constructive Approach to Matrix Converter Stabilization
- 4 June 2012
- journal article
- Published by Institute of Electrical and Electronics Engineers (IEEE) in IEEE Transactions on Power Electronics
- Vol. 28 (1), 418-431
- https://doi.org/10.1109/tpel.2012.2199767
Abstract
The stability of a matrix converter is investigated in both motor mode and generator mode. Inspired by the impedance ratio criterion, a general constructive method is proposed to stabilize matrix converter. Based on the analysis, it is possible to change the admittance of matrix converter by modifying the output reference voltage and rectifier modulation vector according to the constructive method. As a result, the instability which is caused by negative impedance could be eliminated. Meanwhile, the stability regions are enlarged. Furthermore, the underlying principles of the constructive method are stated in detail and several instructive examples, which comply with these principles, are demonstrated. The essence of some other existing methods used to improve the stability of matrix converter is unveiled, and the difference and similarity between the existing methods and the proposed ones are also discussed. The correctness and feasibility of the proposed method are verified by simulations, as well as experiments.Keywords
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