基于动态偏置分配PD-PWM的变桥臂换流器子单元电容均压策略

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Abstract Alternate arm multilevel converter (A2MC) is a new voltage source converter topology which is suitable for high voltage direct current transmission(VSC-HVDC).This paper presents an improved phase disposition pulse width modulation suited for full-bridge cells in this topology.Compared to conventional carrier phase-shifted PWM,this modulation method is more easily to be realized and increase the robustness of system,the computation burden is also reduced.This method can be transfer to any other full bridge cells cascaded structure.Simulation and experimental results demonstrate the simplicity and effectiveness of this new type of modulation strategy.

Key words： Full-bridge sub-module alternate-arm voltage source converter novel PD-PWM strategy dynamic bias distribution

Received: 17 December 2014 Published: 24 August 2016

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TM46

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	Zhu Jin Wei
	Tongzhen Huo
	Qunhai Yang
	Xiaodan Han
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Zhu Jin Wei,Tongzhen Huo,Qunhai Yang等. A Dynamic Bias Distribution PD-PWM Strategy for Alternate Arm Modular Multilevel Converter[J]. Transactions of China Electrotechnical Society, 2016, 31(15): 170-177.

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https://dgjsxb.ces-transaction.com/EN/ OR https://dgjsxb.ces-transaction.com/EN/Y2016/V31/I15/170

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