【摘要】 提出了一种以有源功率补偿器为核心的新型铁路牵引供电系统，以解决现有牵引供电系统对电力系统造成的三相负载不平衡、功率因数低及谐波污染等问题。通过对三／单相负载的平衡变换分析，构造了系统模型，提出了ＰＷＭ控制方案，最后给出了仿真结果。更多还原

【Abstract】 A novel traction power supply system with the active power compensator as its key part is proposed as a solution for unbalanced 3 phase load,low power factor and harmonic pollution,etc.Through the analysis of 3/1 phase load,the system model is set up,a PWM control scheme is given as well as the simulation result.更多还原