Abstract The paper presents the design of a current control system of a grid-tied converter which provides high dynamic in transients states and symmetrical sinusoidal currents under distorted and asymmetrical grid voltage conditions. The current control loop contains a dead-beat compensator and a plug-in fractional delay repetitive controller. The whole control system is designed with regard to signal processing delay present in the control loop. The tuning procedure of the repetitive control uses particle swarm optimization to determine the optimal gain, phase lead and filter parameter. The resulting control system with optimal parameters is applied on the digital signal controller and verified experimentally on the laboratory test bench, which is the main contribution of the paper.

中文翻译：

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电网电压畸变条件下并网变流器带无差拍补偿器的分数延迟重复控制设计

摘要 本文介绍了并网转换器的电流控制系统的设计，该系统在失真和不对称电网电压条件下提供高动态瞬态和对称正弦电流。电流控制回路包含一个死拍补偿器和一个插入式分数延迟重复控制器。整个控制系统的设计考虑了控制回路中存在的信号处理延迟。重复控制的调谐过程使用粒子群优化来确定最佳增益、相位超前和滤波器参数。得到的具有最佳参数的控制系统应用于数字信号控制器，并在实验室测试台上进行了实验验证，这是本文的主要贡献。