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针对电气化铁道供电系统存在的电能质量问题,提出一种无辅助降压变压器的半桥型绕组补偿式有源功率变换系统(auxiliary step-down transformer-less half-bridge winding compensation type active power converter,T-HBWAPC)。与传统有源治理方案相比,在完成同样功能的前提下,该系统无需大容量工频辅助降压变压器,且使用更少的功率开关器件,具有更高的系统集成度和更低的制造、运行成本。文章给出该系统的补偿原理和检测方法,详细分析了系统独特的电压扰动现象。为提高系统在电压扰动下的鲁棒性,采用内模控制器作为T-HBWAPC的电流控制器。最后通过仿真和实验验证了补偿系统及电压扰动分析和控制方法的正确性。
Aiming at the power quality problems existing in the electrified railway power supply system, an auxiliary step-down transformer-less half-winding winding compensation type active power converter (T -HBWAPC). Compared with the traditional active management solution, the system does not require large-capacity power-frequency auxiliary step-down transformers and uses fewer power switching devices to achieve higher system integration and lower manufacturing cost ,Operating costs. The article gives the compensation principle and detection method of the system, and analyzes the unique system voltage disturbance. In order to improve the robustness of the system under voltage disturbance, the internal model controller is adopted as the current controller of T-HBWAPC. Finally, the correctness of the compensation system and voltage disturbance analysis and control method are verified by simulation and experiment.