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| Phase-Locked Control Method for Three-Phase Combined Inverters |
| Wang Jianhua1, Liu Lei2, Zhang Fanghua1, Gong Chunying1, Ma Yiling3 |
| 1. Nanjing University of Aeronautics and Astronautics Nanjing 210016 China 2. Nari-Relays Electric Co. Ltd Nanjing 211102 China 3. Emerson Network Power(Nanjing) Co. Ltd Nanjing 210013 China |
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Abstract A control method for three-phase combined inverter is proposed based on phase-locked loop (PLL) technology. Phase synchronization information is easy to be disturbed in process of signal transmission for conventional combined inverters, which is solved by demodulation of one certain output voltage. Experimental results of 3.6kVA three-phase combined inverter prototypes are presented to verify the validity and feasibility of this method. The proposed method is simple and easy to implement. Good symmetrical output voltage could be obtained even with different inverter models combined together.
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Received: 21 February 2009
Published: 04 March 2014
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2010, Vol. 25 
