中文摘要：

三相不可控整流桥装置产生的电流谐波具有谐波含量大，谐波频谱分布宽的特点。直流侧有源电力滤波器是针对不可控整流桥装置提出的谐波治理方案。从频域角度分析直流侧有源电力滤波器电流环带宽与谐波补偿性能的关系，得到不同带宽所对应的补偿后电流THD理论数据。从而对三相直流侧有源电力滤波器的补偿性能进行定量的研究。通过该频域分析方法。将三相直流侧有源电力滤波器与传统交流侧有源电力滤波器进行对比分析。分析表明，在三相不可控整流桥带大电感负载情况下，当电流环带宽取1 kHz时，直流侧有源电力滤波器补偿后电流THD为0．41％，交流侧有源电力滤波器补偿后电流THD为9．63％。采用平均电流控制策略，完成三相直流侧有源电力滤波器的设计。实验测试结果验证当电流环带宽取1 kHz时，三相直流侧有源电力滤波器实现整流桥负载谐波电流的有效补偿？

英文摘要：

The input current of three-phase uncontrolled rectifier has a large range of high-frequency harmonic components. DC link active power filter（APF） is paralleled at dc side of the rectifier to suppress the input harmonic current of the rectifier. Compensation performance of three-phase DC link APF was researched in this paper at frequency-domain. Quantitative analytical results were obtained to express the relationship between current controller bandwidth and THD of the input current. Using this method, the compensation performance of DC link APF and AC link APF was compared. The result indicated that, under the current bandwidth of 1 kHz, Current THD of three-phase DC link APF is 0. 41%, while Current THD of AC link APF is 9.63% with the same three-phase rectifier load. Three-phase DC link APF with dual-loop average current control is designed to suppress the rectifier harmonic current. Experimental results indicate that the harmonic current of three-phase uncontrolled rectifier is effectively compensated under the current bandwidth of 1 kHz.