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Resonant harmonic elimination pulse width modulation-based high-frequency resonance suppression of high-speed railways

机译:基于共振谐波消除脉冲宽度调制的高速铁路高频共振抑制

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摘要

High-frequency resonances occur frequently and severely disrupt the normal operation of high-speed railways in China. In order to suppress high-frequency resonances in traction power supply systems, a resonant harmonic elimination pulse width modulation (RHEPWM) technology was proposed. With this method, harmonics around the resonant frequency in the harmonic source were eliminated, and thus the resonance formation condition was broken and resonances were suppressed. A real-time simulation of RHEPWM application in high-speed railway system was realised in OP5600 RT-Lab simulator. The real-time simulation results show that the proposed RHEPWM strategy can achieve high-frequency resonance suppression, improve total power factor of traction drive systems, and reduce total harmonic distortion of pantograph currents.
机译:高频共振频繁发生,严重破坏了中国高速铁路的正常运行。为了抑制牵引电源系统中的高频谐振,提出了一种谐振谐波消除脉宽调制(RHEPWM)技术。通过这种方法,消除了谐波源中谐振频率附近的谐波,从而打破了谐振形成条件并抑制了谐振。在OP5600 RT-Lab仿真器中实现了RHEPWM在高速铁路系统中的实时仿真。实时仿真结果表明,所提出的RHEPWM策略可以实现高频谐振抑制,提高牵引驱动系统的总功率因数,并减小受电弓电流的总谐波失真。

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