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针对高速化铁路牵引系统产生的大量负序与谐波电流,提出了一种能够进行大容量功率转移、负序补偿与谐波抑制的电气化铁路功率调节器(railway static power conditioner,RPC)结构。首先分析了针对V/V牵引变压器的RPC系统负序补偿原理,建立了其数学模型和控制原理图,重点分析了控制器参数变化对系统稳定性和闭环跟踪能力的影响,为参数的合理选取提供了理论依据。最后进行了仿真验证,仿真结果验证了分析的正确性。
Aiming at a large number of negative sequence and harmonic currents generated by the traction system of high speed railway, an electrified railway static power conditioner (RPC) structure capable of high capacity power transfer, negative sequence compensation and harmonic suppression is proposed. The principle of negative sequence compensation for RPC system of V / V traction transformer is firstly analyzed. The mathematical model and control principle diagram are established. The influence of controller parameters variation on system stability and closed-loop tracking capability is analyzed emphatically. Provided a theoretical basis. Finally, the simulation verification is carried out. The simulation results verify the correctness of the analysis.