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| Research on Control Strategy for Three-Phase Double Mode Inverter |
| Jiang Ji, Duan Shanxu, Chen Zhongwei |
| State Key Laboratory of Advanced Electromagnetic and technology Huazhong University of Science and Technology Wuhan 430074 China |
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Abstract This paper proposes a control strategy which makes three-phase double mode inverter(TDMI)transfer seamlessly in complicated grid fault conditions and has a good performance in grid-tied condition when grid is normal. This paper studies the problem of TDMI which uses a LC filter, proposes a new transfer method based on controller in abc coordinates which reduce transient problem caused by controller based on dq coordinate and make transfer seamlessly. It chooses a close loop control of inductire current compensated by capacitor current in grid-tied mode and double feedback loop of capacitor voltage and current in stand-alone mode for inverter with a good property in these two modes. The simulation results show the validity of propose control strategy.
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Received: 01 November 2010
Published: 19 March 2014
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2012, Vol. 27 
