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针对铁路电力机车产生的负序、谐波、无功等电能质量问题,传统的两电平变换器型的铁路功率调节器已经无法满足高压大功率应用领域的要求,基于MMC的铁路功率调节器具有明显的优势。以采用V/v接线变压器的牵引变电所为背景,对不同结构的MRPC方案进行分析和对比。最后,总结了3桥臂MRPC方案的优势,通过RT-LAB实时仿真平台,对3桥臂MRPC系统进行了验证,结果验证了该方法的可行性和有效性。
For the negative sequence, harmonic, reactive power and other power quality problems caused by electric locomotives, the traditional two-level converter type of railway power regulator can no longer meet the requirements of high-voltage and high-power applications. The MMC-based railway power conditioner Has obvious advantages. Taking the traction substation with V / v connecting transformer as the background, the MRPC schemes with different structures were analyzed and compared. Finally, the advantages of the 3-arm MRPC scheme are summarized. The 3-leg MRPC system is verified by RT-LAB real-time simulation platform. The results verify the feasibility and effectiveness of the proposed MRPC scheme.