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首页> 外文期刊>Power Electronics, IET >Backstepping direct power control without phase-locked loop of AC/DC converter under both balanced and unbalanced grid conditions
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Backstepping direct power control without phase-locked loop of AC/DC converter under both balanced and unbalanced grid conditions

机译：在平衡和不平衡电网条件下，无需AC / DC转换器的锁相环的Backstepping直接功率控制

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摘要

This study presents a backstepping direct power control (BS-DPC) strategy for the grid-connected AC/DC converter under both balanced and unbalanced grid conditions. The proposed BS-DPC adopts the non-linear BS controller to the DPC strategy in the stationary reference frame, thus phase-locked loop is unnecessary. A generalised power compensation method is applied to the proposed BS-DPC under unbalanced grid condition to achieve multiple control targets. To validate the effectiveness of the proposed BS-DPC, comparative experimental studies are conducted under both balanced and unbalanced grid conditions. Experimental results verify that the proposed BS-DPC inherits the excellent dynamic performance of the traditional DPC and has excellent steady-state performance as well. In addition, flexible control targets can be achieved and dynamically adjusted under unbalanced grid condition according to the grid safety operation requirement.
机译：这项研究提出了在平衡和不平衡电网条件下用于并网AC / DC转换器的Backstepping直接功率控制（BS-DPC）策略。所提出的BS-DPC在固定参考系中采用非线性BS控制器作为DPC策略，因此不需要锁相环。在不平衡电网条件下，将通用功率补偿方法应用于提出的BS-DPC，以实现多个控制目标。为了验证所提出的BS-DPC的有效性，在平衡和不平衡电网条件下都进行了对比实验研究。实验结果证明，提出的BS-DPC继承了传统DPC的出色动态性能，并具有出色的稳态性能。另外，根据电网安全运行要求，可以在不平衡电网条件下实现灵活的控制目标并动态调整。

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