级联式双向DC-DC变换器的优化控制方法

doi:10.19595/j.cnki.1000-6753.tces.L70084

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Abstract

Conventional dual-loop proportional-integral(PI) control method for cascaded bi-directional dc-dc converters has some disadvantages,such as inconvenient and difficult adjustments of PI parameters.As well,due to the inherent limit of PI regulators,the dynamic performance of the cascaded bi-directional dc-dc converters can not be optimized.To fulfill the practical control demand of cascaded bi-directional dc-dc converters,an optimized trade-off control method has been proposed in this paper,which is realized by combining the conventional dual-loop PI control and model predictive control.The conventional dual-loop PI control is employed in the first stage bi-directional dc-dc converter,and an optimized model predictive control algorithm has been developed for the second stage bi-directional dc-dc converter.The proposed optimized control method has been compared with conventional dual-loop control method and classic model predictive control method through simulations and experiments.These results show that,the dynamic performance of cascaded bi-directional dc-dc converter by using the proposed optimized control method is superior to that by using conventional dual-loop control;Furthermore,compared with classic model predictive control,the computation of the proposed optimized control method is reduced by 45.22%.

Key words： Cascaded bi-directional DC-DC converter model predictive control DC bus dynamic/static performance

Received: 08 August 2016 Published: 25 October 2017

PACS:

TK514

Corresponding Authors: 国家自然科学基金(51477003)、北京市自然科学基金(4152013)、北京市科技新星计划(Z161100004916049)和北方工业大学“长城学者后备人才培养计划”(XN070007)资助项目。

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	Mei Yang
	Chen Lisha
	Huang Weichao
	Li Xiaoqing
	Sun Kai

Cite this article:

Mei Yang,Chen Lisha,Huang Weichao等. Optimized Control Method of Cascaded Bi-Directional DC-DC Converters[J]. Transactions of China Electrotechnical Society, 2017, 32(19): 153-159.

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https://dgjsxb.ces-transaction.com/EN/10.19595/j.cnki.1000-6753.tces.L70084 OR https://dgjsxb.ces-transaction.com/EN/Y2017/V32/I19/153

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