With the extensive application of the transducer in industry, the problems of harmonicinterference is getting more and more attention.
变频器在工业生产中的应用越来越广泛，其谐波干扰问题日益引起人们的重视。
2
The equivalent disturbing current, which determines the harmonicinterference noise in nearby telephone circuits, is studied systematically.
对衡量直流输电线路电话干扰水平的等效干扰电流标准进行了系统的研究。
3
Classical direct torque control method adopts the technique of 6 polygon flux linkage voltage modulation. It will generate torque pulsation and harmonicinterference.