三端口隔离双向DC-DC变换器模型预测控制技术

doi:10.19595/j.cnki.1000-6753.tces.191169

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Abstract In order to improve the dynamic performance of the three-port isolated bidirectional DC-DC converter in DC micro-grid, a model predictive control (MPC) strategy is proposed for the triple-active bridge (TAB) DC-DC converter. Considering the control targets of each port of TAB converter, the discretization prediction model of TAB converter is established based on phase-shifting control and average model, and the predictive controller is designed by optimal solution of MPC problem to realize the decoupling control effect among ports. The influence of system parameter deviation of MPC strategy is further analyzed, and the MPC control scheme of TAB converter that suppresses steady-state error is designed. The TAB prototype is built based on the dual processor control core of TMS320F28335+FPGA_XC6SLX16. The experimental results have verified that the proposed method is effective, and has faster dynamic characteristics and port power decoupling operation capability.

Key words： DC micro-grid three-port DC-DC converter phase-shifting control average model model predictive control

Received: 12 September 2019

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TM46

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	Nian Heng
	Ye Yuhua

Cite this article:

Nian Heng,Ye Yuhua. Model Predictive Control of Three-Port Isolated Bidirectional DC-DC Converter[J]. Transactions of China Electrotechnical Society, 2020, 35(16): 3478-3488.

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https://dgjsxb.ces-transaction.com/EN/10.19595/j.cnki.1000-6753.tces.191169 OR https://dgjsxb.ces-transaction.com/EN/Y2020/V35/I16/3478

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