Transactions of China Electrotechnical Society  2015, Vol. 30 Issue (21): 57-66    DOI:
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Circulating Harmonics Suppression Method for Modular Multilevel Converter
Zhang Ming,Wu Haowei,Cai Kai,Xu Zhengxi
Wuhan Second Ship Design and Research Institute Wuhan 430205 China

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Abstract  In this paper,an improved circulating current control model for modular multilevel converter (MMC) is proposed with the consideration of the submodule capacitor voltage disturbances.Then the resonant controller is utilized in company with the conventional proportional-integral controller to suppress the circulating harmonics.For better eliminating results,the repetitive controller is also proposed to suppress all orders of harmonics within the voltage disturbance.The proposed repetitive-based control strategy has simple forms and better results compared with the multi-resonant control,which only applies to the specified orders.Finally,the proposed multi-resonant and repetitive-based circulating control methods are validated by the experimental results.
Key wordsModular multilevel converter      circulating harmonics suppression      resonant control      repetitive control     
Received: 23 December 2014      Published: 12 November 2015
PACS: TM464  
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Zhang Ming
Wu Haowei
Cai Kai
Xu Zhengxi
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Zhang Ming,Wu Haowei,Cai Kai等. Circulating Harmonics Suppression Method for Modular Multilevel Converter[J]. Transactions of China Electrotechnical Society, 2015, 30(21): 57-66.
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