动车组牵引传动控制策略对网侧谐波特性的影响

Influence on network_side harmonics characteristics resulted from traction drive control strategy of EMU

为了改善网侧电流谐波性能、降低某些特征频段谐波含量,CRH2型列车采用了多重化控制技术.本文分析了多重化控制策略对网侧电流谐波的影响,通过分析和实测表明:使用载波移相多重化控制技术能有效地抑制某些频段特征谐波,显著降低了网侧特定频段的谐波含量,改善了列车网侧电流质量.

In order to improve the harmonic characteristics of the networkside current, multiple cascade technology is introduced by CRH2 EMU. This article analyzes the influence of multiple controlstrategy on the content of side current harmonics. Extensive analysis and experiments prove that theuse of multicarrier phaseshift control strategy significantly offsets a large number of characteristicharmonics and reduces the content of side harmonics with specific frequency band. Test results showsthat better harmonic characteristic of the networkside current is obtained and the networkside currentquality is improved.