Offshore wind farms are always connected to onshore alternating current (AC) power systems using direct current (DC) submarine cables through a DC-AC DC–AC voltage source converter station. In most cases, nonlinear loads are located on the AC side of the station. The distortion caused by such loads tends to flow into the AC system due to its low impedance, negatively impacting power quality and raising the power losses. This paper presents a novel vector control method (VCM) for the DC-AC DC–AC station to simultaneously deliver the power demanded by the AC side and act as a shunt active power filter to suppress distortions. In this scope, the conventional VCM is further modified by developing several control loops with proper control and power parameters to obtain a sufficiently wide bandwidth. Additionally, the performance of three different types of low pass filters (LPF) is investigated due to the significant role of LPF in the success of the proposed method. Simulation and experimental outcomes are provided to validate the effectiveness of the proposed method

海上风电场始终使用直流 (DC) 海底电缆通过 DC-AC DC-AC 电压源换流站连接到陆上交流 (AC) 电力系统。在大多数情况下，非线性负载位于电站的交流侧。此类负载引起的失真由于其低阻抗而倾向于流入交流系统，从而对电能质量产生负面影响并增加电能损耗。本文提出了一种用于 DC-AC DC-AC 站的新型矢量控制方法 (VCM)，可同时提供交流侧所需的功率，并充当并联有源电力滤波器以抑制失真。在此范围内，通过开发具有适当控制和功率参数的多个控制回路来进一步修改常规 VCM，以获得足够宽的带宽。此外，由于 LPF 在所提出方法的成功中发挥了重要作用，因此研究了三种不同类型的低通滤波器 (LPF) 的性能。提供模拟和实验结果以验证所提出方法的有效性