基于120°坐标系的SVPWM算法研究

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Abstract A new space vector pulse width modulation (SVPWM) algorithm based on 120° AB non-orthogonal coordinates is put forward in order to avoid the problems of structure complexity and large computation of the traditional algorithm.The constraint of Cartesian coordinates system is broken and two unit vectors with 120° angle are used as the bases to compose the novel non-orthogonal coordinates.Then,each space vector can be transformed into this coordinates.Through the judgment and operation of both coordinate components,the sectors judgment,action time calculation,and PWM signal’s generation can be accomplished to implement the SVPWM algorithm.At last,simulations and experiments verify the correctness of the proposed algorithm.By comparing with the traditional algorithm in digital controllers,the simplicity,speediness,and exactness of the proposed SVPWM algorithm have been testified.

Key words： Space vector non-orthogonal coordinates system PWM sector

Received: 29 January 2015 Published: 16 March 2016

PACS:

TM343

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	Articles by authors
	Sun Hexu
	Jing Kai
	Dong Yan
	Zheng Yi

Cite this article:

Sun Hexu,Jing Kai,Dong Yan等. Research of SVPWM Algorithm Based on 120° Coordinates System[J]. Transactions of China Electrotechnical Society, 2016, 31(5): 52-59.

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https://dgjsxb.ces-transaction.com/EN/ OR https://dgjsxb.ces-transaction.com/EN/Y2016/V31/I5/52

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