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| Integrated Control Scheme for Three-Level NPC Based Dual-PWM Converter |
| Zhang Yingchao1, 2, Zhao Zhengming1, Feng Bo1, Lu Ting1, Jin Liping2 |
| 1. Tsinghua University Beijing 100084 China 2. Chongqing Communication Institute Chongqing 400035 China |
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Abstract Power response delay and dc-bus voltage fluctuations are analyzed, and then a novel integrated control scheme for three-level NPC based dual-PWM converter is proposed. The direct power control with space vector modulation(DPC_SVM)for front-end rectifier and indirect rotor field oriented control(IFOC)for back-end inverter-fed induction motor are adopted respectively. A power feed-forward control loop from inverter to rectifier side is introduced to obtain better dynamic performance for DC link. Experimental results show that the system exhibits excellent dynamic performance, which can minimize dc bus voltage fluctuations with low size of capacitors.
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Received: 15 November 2010
Published: 07 March 2014
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2011, Vol. 26 
