移相全桥变换器的PWM全阶鲁棒滑模控制

doi:10.19595/j.cnki.1000-6753.tces.170229

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Abstract The traditional phase-shifted full-bridge converter uses the method of period averaging model to design linear control links, which cannot satisfy the robustness demand for distributed power supply. This paper proposed a PWM full order sliding mode control for phase-shifted full-bridge with four subsystems. Based on the equivalent dynamic model of PSFB, the integral element is introduced in the sliding surface to eliminate the steady-state error. Meanwhile, the analysis of the sliding mode motion in the state space and its strict existence conditions were carried out, and the equivalent PWM control function was provided. On the basis of the equivalent function, the switching control was involved and the robustness conditions were analyzed. The experimental results show that the proposed control strategy can not only improve the robustness and adjusting performance, but also fix switching frequency to avoid the frequency changes when the operating conditions change.

Key words： Phase-shifted full-bridge full order sliding mode control fixed switching frequency PWM sliding mode control robustness

Received: 22 April 2017 Published: 24 May 2018

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TM422

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	Articles by authors
	Gao Ming
	Wang Dazhi
	Li Zhao

Cite this article:

Gao Ming,Wang Dazhi,Li Zhao. A PWM Full Order Robustness Sliding Mode Control for Phase-Shifted Full-Bridge Converter[J]. Transactions of China Electrotechnical Society, 2018, 33(10): 2293-2302.

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https://dgjsxb.ces-transaction.com/EN/10.19595/j.cnki.1000-6753.tces.170229 OR https://dgjsxb.ces-transaction.com/EN/Y2018/V33/I10/2293

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