反激变换器带预估计补偿的非线性控制技术

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Abstract A novel nonlinear digital control method based on proportional-integral-derivative controller (PID controller) for Flyback converter is investigated in this paper. If both input voltage and output voltage variation exceed the threshold value, the control scheme will calculate the duty of pulse width modulation (PWM) from the input voltage directly instead of PID compensator. Meanwhile, in order to improve dynamic response performance, the curve fitting technique is used to realize the complex division operation by multiplications to short the calculation time. Furthermore, input voltage prediction compensator is integrated too to compensate DSP calculation delay and improve the transient response performance. Experimental results verify that, compared with traditional PID control, the proposed control scheme can significantly improve system dynamic response and ensure output voltage remain stable under fast input voltage transient conditions.

Key words： Flyback converter nonlinear control prediction compensator curve fitting

Received: 16 February 2012 Published: 05 November 2014

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TM46

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	Articles by authors
	Sun Yaping
	Zhu Shanan
	Ren Zhenyu
	Wang Yuhuai

Cite this article:

Sun Yaping,Zhu Shanan,Ren Zhenyu等. Research on Nonlinear Control Technique Based on Prediction Compensator for Flyback Converter[J]. Transactions of China Electrotechnical Society, 2014, 29(6): 176-180.

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http://dgjsxb.ces-transaction.com/EN/ OR http://dgjsxb.ces-transaction.com/EN/Y2014/V29/I6/176

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