摘要
阐述了单相家用变频电气设备产生的高次谐波,迭加到住宅三相电源N线上的电流IN大于三相电流平均值IL,以及导致这一结果的主要用电器具是单相变频调速空调机。并对每100户单相变频调速空调机拥有率K为下列值时,估算出IN值为:K=1时,IN≈1.55IL;K=0.75时,IN≈1.4IL;K=0.5时,IN≈1.25IL。
The paper presents current on N conductor of three phases power which arises form harmonics of single phase house- hold frequency variable electric equipments is greater than mean value of there phases current. It points out that main electrical e quipment which leads to this result is single phase frequency variable air conditioner. According to the posses rate of single phase frequency-variable air conditioner per 100 families, the paper also gives the following estimation value of IN : when K = 1,IN =1.55IL; when K=0.75, IN =1.4IL; when K=0.5, IN= 1. 25IL.
出处
《建筑电气》
2005年第4期7-10,共4页
Building Electricity