An Efficient Carrier-Based Modulation Strategy for Five-Leg Indirect Matrix Converters to Drive Open-End Loads with Zero Common-Mode Voltage

Abstract

This 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.

Keywords:

• carrier-based modulation
• common-mode voltage
• five-leg inverter
• indirect matrix converter
• open-end load
• space vector modulation

Additional information

Notes on contributors

Van Van Huynh

Van Van Huynh has completed the Ph.D. degree in automation and control from Da-Yeh University, Taiwan. He is currently a Lecturer in the Faculty of Electrical and Electronics Engineering, Ton Duc Thang University, Ho Chi Minh City, Vietnam. He has published a totally 10 journal papers and more than 11 international conference papers. His current research interests are in sliding mode control, variable structure control, and power system control.

Tuyen D. Nguyen

Tuyen D. Nguyen was born in Binh Dinh province, Vietnam, in 1982. He received a B.S. degree in electrical engineering from the University of Technology, Ho Chi Minh City, Vietnam, in 2004 and the Ph.D. degree from University of Ulsan, Ulsan, Korea, in 2012. He is currently lecturer for the Faculty of Electrical and Electronics Engineering, University of Technology, Ho Chi Minh City, Vietnam. His research interests include power electronics, electrical machine drives, low-cost inverter, and renewable energy, especially matrix converter.

Van-Thanh Dao

Van-Thanh Dao received the B.S. and M.S. degrees in automation and control from the University of Technology, Ho Chi Minh City, Vietnam, in 2012 and 2016, respectively. He is currently an Electrical Engineering Lecturer with the Tran Dai Nghia University, Ho Chi Minh City, Vietnam. His current research interests are power electronics, automation, and control.

Quoc-Hoan Tran

Quoc-Hoan Tran received the B.S. and M.S. degrees in electrical engineering from the University of Technology, Ho Chi Minh City, Vietnam, in 2007 and 2011, respectively, and the Ph.D. degree in electrical engineering from the University of Ulsan, Ulsan, Korea, in 2017. He is currently an Electrical Engineering Lecturer with the Tran Dai Nghia University, and with the Modeling Evolutionary Algorithms Simulation and Artificial Intelligence, Faculty of Electrical & Electronics Engineering, Ton Duc Thang University, Ho Chi Minh City, Vietnam. His research interests include power electronics, matrix converters, and pulse-width modulation techniques.