Double closed-loop control strategy for Superbuck converter with damping network

Ziwen Fang; Yahong Yang; Zhiqi Lu; Aiwei Yang; Xiaobin He

doi:10.1117/12.2649435

14 October 2022 Double closed-loop control strategy for Superbuck converter with damping network

Ziwen Fang, Yahong Yang, Zhiqi Lu, Aiwei Yang, Xiaobin He

Proceedings Volume 12343, 2nd International Conference on Laser, Optics and Optoelectronic Technology (LOPET 2022); 123431E (2022) https://doi.org/10.1117/12.2649435
Event: 2nd International Conference on Laser, Optics and Optoelectronic Technology (LOPET 2022), 2022, Qingdao, China

Abstract

Aiming at the Superbuck circuit applied to the Battery Charge Regulator (BCR) of the space Power Conditioning Unit (PCU), the damping network is connected in parallel with the middle capacitor to eliminate the RHP zeros and improve the characteristics of the high order converter. The small signal model of the system was established through the time-average model, and the double closed-loop control strategy of peak current control was proposed based on the constant current charging mode. Then, the bode diagram of the transfer function was obtained in Simplis simulation software. Finally, the experimental platform of Superbuck circuit was built, and it is proved that the Superbuck circuit with damping network has good steady-state and dynamic performance under the proposed control strategy.

Citation Download Citation

Ziwen Fang, Yahong Yang, Zhiqi Lu, Aiwei Yang, and Xiaobin He "Double closed-loop control strategy for Superbuck converter with damping network", Proc. SPIE 12343, 2nd International Conference on Laser, Optics and Optoelectronic Technology (LOPET 2022), 123431E (14 October 2022); https://doi.org/10.1117/12.2649435

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