To verify the harmonic suppression capability of a series-connected 36-pulse rectifier and to improve the load adaptability of its harmonic injection circuit, a reliable selection method for the DC-side output capacitor of the rectifier is proposed. The sufficient and necessary conditions for ensuring the rectifier can operate under the 36-pulse rectification state is summarized, which is the basis for selecting capacitance values under different load types. After using the proposed selection method for the output capacitors, simulation and experimental results indicate that the hybrid harmonic suppression circuit has good performances under a resistive load, a resistive–inductive load, or a load mutation.

为验证串联36脉波整流器的谐波抑制能力，提高其谐波注入电路的负载适应性，提出了一种可靠的整流器直流侧输出电容器选择方法。总结了保证整流器工作在36脉波整流状态的充要条件，这是选择不同负载类型下电容值的依据。使用所提出的输出电容器选择方法后，仿真和实验结果表明，混合谐波抑制电路在阻性负载、阻性负载或负载突变下具有良好的性能。