摘要
论述了电动机调速产生的谐波电流以及谐波对供电系统的危害 ,而新的国际和国家EMC标准对谐波电流分量提出了越来越高的要求 ,传统调速方法产生的谐波电流明显达不到新的EMC标准 ,经过分析提出了解决问题的方案 ,通过仿真波形 ,证明了新方法的优越性。
The cause of harmonic current in motor speed regulation and its harm to the power supply system are discussed. But the harmonic current has been restricted within necessary limits according to new national and international EMC standards. The traditional regulation method can not pass these standards. By analysis of relative international standards, the solutions of this problem were presented. The output simulation waves verify the good performance of HFM.
