To simplify the complex calculation process of the optimal injection transformer turn ratio, a minimum error energy method is proposed in this article. According to the structure of multipulse rectifiers, the injection waveform when the rectifier without harmonics is analyzed, and the relationship between the input voltage and the injection voltage is studied. According to the relationship, the minimum error energy method is researched. To prove the accuracy of the minimum error energy method and improve the harmonic suppression ability of multipulse rectifiers, an improvable hybrid harmonic suppression method is proposed. Based on the structure of the proposed hybrid method, the optimal injection transformer turn ratio is calculated, respectively, by the minimum THD of input voltages and the minimum error energy method. The results show that the proposed minimum error energy method accurately solves the optimal turn ratio of the injection transformer with reduced computation. The proposed harmonic reduction method effectively suppresses the harmonics of the input side, which is suitable for high-power quality requirements.

中文翻译：

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串联多脉冲整流器的通用注入变压器匝数比设计方法和混合谐波降低方法

为简化最优注入变压器匝数比的复杂计算过程，本文提出了一种最小误差能量法。根据多脉冲整流器的结构，分析了无谐波整流器的注入波形，研究了输入电压与注入电压的关系。根据该关系，研究了最小误差能量法。为了证明最小误差能量法的准确性，提高多脉冲整流器的谐波抑制能力，提出了一种可改进的混合谐波抑制方法。基于所提出的混合方法的结构，分别通过输入电压的最小THD和最小误差能量法计算最佳注入变压器匝数比。结果表明，所提出的最小误差能量法在减少计算量的情况下准确地求解了注入变压器的最优匝数比。所提出的谐波抑制方法有效地抑制了输入侧的谐波，适用于高电能质量要求。