Three-phase PWM rectifiers have been used widely due to their benefits such as unity power factor, sinusoidal input current and also low-ripple output DC voltage. Among control methods, vector control method in the synchronous reference frame through proportional–integral compensators directly controls the input current. However, the effect of non-ideal grid voltage like harmonic polluted voltage was not investigated. In this paper, firstly, comprehensive design and digital implementation of modified vector control method with simple structure is proposed. Secondly, the effect of the grid voltage distortion is considered and a solution based on resonant controllers is also proposed. Thirdly, all of the designs and dynamic assessments of the overall control system are performed in z domain to consider overall delay, comprehensively. Finally, extend simulations and experimental verifications on a high power 30 kW rectifier are done. The results not only show the significant decrease of THD value of the input current but also, simple structure for digital implementation is verified. All of these validate the effectiveness of the proposed control methods and design procedure.

三相 PWM 整流器因其具有单位功率因数、正弦输入电流和低纹波输出直流电压等优点而被广泛使用。在控制方法中，同步参考系中的矢量控制方法通过比例积分补偿器直接控制输入电流。然而，没有研究非理想电网电压如谐波污染电压的影响。本文首先提出了一种结构简单的改进型矢量控制方法的综合设计和数字化实现。其次，考虑了电网电压畸变的影响，并提出了基于谐振控制器的解决方案。第三，整个控制系统的所有设计和动态评估都在z域来综合考虑整体延迟。最后，对大功率 30 kW 整流器进行了扩展模拟和实验验证。结果不仅表明输入电流的 THD 值显着降低，而且验证了数字实现的简单结构。所有这些都验证了所提出的控制方法和设计程序的有效性。