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| De-Re-Couple SPWM Strategy for Single-Phase High-Frequency Link Matrix Inverter |
| Yan Zhaoyang, Zhang Chunjiang, Wu Weiyang, Jia MinLi, Zhang Kun |
| Yan Shan University Qinhuangdao 066004 China |
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Abstract A single-phase high frequency link matrix inverter is selected as the study object, and it is made up of three parts such as unidirection full-bridge H type inverter in the DC input side, high frequency transformer and matrix converter(MC) in the AC output side. Aiming at the key problem of how to achieve safe commutation under the RL load condition, the paper analyzes the topology of the study object, and then puts forward a novel modulation strategy as De-Re-couple SPWM by using De-Re-couple analysis idea, the paper gives out the control principle suiting to the new strategy, and designs the combination logic for the MC power devices. A thoroughly analysis of the MC working modes and some switching rules are shown in detail in the paper. Computer simulation and experiments are done, and the results are brought out. All of them show that the De-Re-couple SPWM is efficient to solute the commutation problem under a RL load and can be with a soft switching running, and they also confirm the feasibility and the effectiveness of the novel strategy and the control logic.
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Received: 19 November 2010
Published: 19 March 2014
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2012, Vol. 27 
