电路功率因数和谐振的关系  

The Relationship between Circuit Power Factor and Resonance

作　　者：覃缓贵[1] QIN Huan-gui(Guangxi Institute of Electrical and Mechanical Technology,Nnanning 530007,China)

机构地区：[1]广西机电职业技术学院,广西南宁530007

出　　处：《通信电源技术》2020年第9期87-88,共2页Telecom Power Technology

摘　　要：电路的功率因数和谐振是电路分析基础中的两个重要概念。前者是有功功率公式P=IUcosφ中的cosφ,大小由电路中的总电压和总电流的相位差φ确定;后者是电路所处的一种特殊情况,即电路中的总电流或总电压达到极限的一种状态。在提高电路功率因数时会涉及谐振,文中通过相量分析,较详细分析了两者的深层次关系。Power factor and resonance are two important concepts in circuit analysis.The former is cosφin the active power formula P=IUcosφ,whose magnitude is determined by the phase difference between the total voltage and the total current in the circuit.The latter is a special case in which the circuit is located,that is,a state in which the total current or the total voltage in the circuit reaches the limit,and resonance will be involved in improving the circuit power factor.This paper analyzes the deep-seated relationship between the two in detail through phasor analysis.

关 键 词：电路分析 功率因数 谐振 

分 类 号：TM714[电气工程—电力系统及自动化]