工业电网中中频电源的谐波分析与抑制方法的研究

Research of Harmonic Analysis and Suppression of Medium-Frequency Power Supply in the Industrial Power Network

研究了工业电网中由中频电源产生谐波的机理,指出中频电源为电流型谐波源,抑制中频电源所引起的谐波应首先抑制谐波电流。分析了中频电源交流侧和电网侧的谐波特性,并针对中频电源的谐波类型提出了几种谐波抑制措施。所得结论对治理中频电源引起的谐波污染具有理论指导意义。

The mechanism of harmonic caused by medium-frequency power supply in the rural power network is analyzed. It indicates that medium-frequency power supply is the source of harmonic current. Firstly, so harmonic current should be suppressed rather than harmonic voltage. The harmonic characteristic on the AC side of medium-frequency power supply and the network side is analyzed. The measures of the harmonic suppression of medium-frequency power supply are put forward. Some results have been indicated significance of theories to control the harmonic pollution caused by medium-frequency power supply.