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VOLTAGE TRANSFER
CHARACTERISTIC
OF MATRIX
CONVERTER
ZHANG Xiaoping1, 2 TANG Huaping1 ZHU Jianlin3
ZHANG Jianhua3 YUE Zhou3
(1. College of Mechanical and Electrical Engineering, Central South University, Changsha 410083;
2. College of Information and Electrical Engineering, Hunan University of Science and Technology, Xiangtan 411201;
3. College of Information Engineering, Xiangtan University, Xiangtan 411105
)
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Abstract: Two effective methods, namely the method of harmonic injection and overmodulation, to increase the voltage transfer ratio of matrix converter, are proposed. After the fundamental principles of these two methods are clarified, their different characteristics are analyzed. Then their feasibility and validity are tested by simulation and physical prototype experiment. The results indicate that these two methods can both increase maximally the ratio of voltage transfer to 1.0, though the harmonic in the output voltage increases correspondingly. The characteristics of the harmonic generated by these two methods are also compared and the strategies to suppress it are discussed. Inspiration may be provided for further engineering application.
Key words: Matrix converter Voltage transfer ratio
Harmonic injection Overmodulation
CLC No: TM464
国家自然科学基金资助项目(50575228). Received 20060704, received in revised form 20070305
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