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| An Over-Modulation in Matrix Converter Based on Limit-Trajectory |
| Li Shengmin, Lu Jing, Zhong Yanru |
| Xi’an University of Technology Xi’an 710048 China |
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Abstract Aimed at problem of poor quality of waveforms and that of complicated modulation strategy, a novel over-modulation in matrix converter based on limit-trajectory is proposed in this paper. This strategy is adopted in matrix converter based on the virtual uncontrollable modulation and used to ensure linear modulation in all over-modulation regions. The algorithm is simple and the simpler control algorithm reduces memory space and linear calculation is instead of look-up table. Simulation and experiments show that the voltage transfer ratio can be improved from 0.95 to 1.0 and the quality of output waveforms is effectively enhanced.
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Received: 18 August 2011
Published: 20 March 2014
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| About author:: Li Shengmin male, born in 1962. He is PhD, associate professor. His research interests are in applications of power electronics in motion control systems, matrix converters, and intelligent controls in power electronics. Lu Jing female, born in 1980. MS, Hers research area is power electronic conversion technology. |
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2012, Vol. 27 
