FULL POWER RANGE DAB UNIFIED ZVS CONTROL STRATEGY BASED ON CURRENT RMS

Han Zongfeng; Wang Fusheng; Cheng Shuai; Zhang Chuanqi

doi:10.19912/j.0254-0096.tynxb.2023-1813

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Acta Energiae Solaris Sinica ›› 2024, Vol. 45 ›› Issue (11) : 663-671. DOI: 10.19912/j.0254-0096.tynxb.2023-1813

FULL POWER RANGE DAB UNIFIED ZVS CONTROL STRATEGY BASED ON CURRENT RMS

Han Zongfeng, Wang Fusheng, Cheng Shuai, Zhang Chuanqi

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Abstract

Based on the optimization control of inductive root mean square current, a new soft-switching range optimization control strategy is proposed. This control strategy restricts the inductor current during switch action, ensuring a significant extension of the soft switching range across the entire power range, reducing switch losses, and achieving accurate root mean square current, thereby further enhancing the efficiency of the DAB converter. Meanwhile, a new modulation method is proposed to achieve thermal balance between bridge arms. Finally, a simulation model is built and verified using Matlab.

Key words

zero voltage switching / DC-DC converters / efficiency / inductive root mean square current / thermal balance

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Han Zongfeng, Wang Fusheng, Cheng Shuai, Zhang Chuanqi. FULL POWER RANGE DAB UNIFIED ZVS CONTROL STRATEGY BASED ON CURRENT RMS[J]. Acta Energiae Solaris Sinica. 2024, 45(11): 663-671 https://doi.org/10.19912/j.0254-0096.tynxb.2023-1813

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