针对新型高压直流输电模拟系统12脉波整流器与逆变器产生的谐波，设计了基于新型换流变压器的无源滤波器系统。
In view of harmonic which generated from the new-type HVDC analog system 12-pulse wave rectifiers and the inverter, designed passive filters system based on the new-type converter transformer.
其次，本文还详细介绍了有源滤波器的谐波提取原理和电流控制原理，并对单台有源滤波器的各种不同工况、有源滤波器与12／24脉波整流器的配合运行工况和有源滤波器的多重化工况进行了仿真验证。
The simulations including a single APF under a variety of different conditions, the APF's parallel operation with 12/24-pulses rectifier and multiple APF in series have been done in the paper, too.
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