摘要
在分析现有功率因数检测电路的基础上,提出了基于单片机电压采样的功率因数检测方法。叙述了电压采样测量功率因数的原理,设计出了以PIC16F877单片机核心的功率因数在线检测电路。并采用两种不同的负载进行了功率因数在线检测试验,通过对试验结果分析、比较可以看出该在线检测电路具有较高的精度。
On the basis of analysis of power factor measurement circuit, this paper put forward the method based on voltage sampling with single-chip processor to measure the power factor. Power factor measurement principle based on voltage sampling is described, and the power factor detection circuit on-line as the core of Single-chip microcomputer is designed. And the test is done with two different loads. It shows that the detection circuit on-line has high accuracy through the analysis and comparison with test results.
出处
《微计算机信息》
2010年第17期98-99,110,共3页
Control & Automation
关键词
功率因数
电压采样
单片机
在线检测
power factor
voltage sampling
single-chip microcomputer
detection circuit on-line
