An Efficient Carrier-Based Modulation Strategy for Five-Leg Indirect Matrix Converters to Drive Open-End Loads with Zero Common-Mode Voltage |
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Authors: | Van Van Huynh Tuyen D. Nguyen Van-Thanh Dao |
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Affiliation: | 1. Modeling Evolutionary Algorithms Simulation and Artificial Intelligence, Faculty of Electrical and Electronics Engineering, Ton Duc Thang University, Ho Chi Minh City, Vietnam;2. Faculty of Electrical and Electronics Engineering, Ho Chi Minh City University of Technology, VNU-HCM, Ho Chi Minh City, Vietnam;3. Tran Dai Nghia University, Ho Chi Minh City, Vietnam |
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Abstract: | AbstractThis paper presents an efficient carrier-based modulation (CBM) strategy for a five-leg indirect matrix converter (IMC) to drive a three-phase open-end load (OEL) with approximate zero common-mode voltage (CMV) across the load phase. The operating principle of the five-leg IMC fed three-phase OEL is firstly analyzed to select suitable switching states that do not generate any CMV across the load phase. Then, the CBM strategy is developed to control the five-leg IMC in order to overcome the complexity of conventional space vector modulation strategies. Consequently, the gating signals are generated by the comparison of a high-frequency carrier signal with corresponding modulation signals without the computational burden and lookup-table technique. Also, the scheme of five-leg IMC fed OEL can decrease the numbers of power switches as well as acquire advanced features such as higher voltage transfer ratio and better output voltage quality with the three-level waveform. Simulation and experimental results are provided to validate the proposed CBM strategy. |
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Keywords: | carrier-based modulation common-mode voltage five-leg inverter indirect matrix converter open-end load space vector modulation |
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