交流电源系统的基准与反馈

交流电源系统实际上是一个闭环的自动控制系统,基准和反馈是它的两个重要环节。分别介绍了交流电源系统两种常用的基准——正弦波电压和直流电平,及其常用的反馈方式——峰值反馈和平均值反馈,并对交流电源系统的各种基准与反馈电路进行了分析与比较。结合自动控制理论,剖析了因基准与反馈环节设计不当对交流电源系统产生的影响,并给出采用有效值转换电路消除系统静态误差的解决方案。

The reference and feedback of AC power system

Actually,AC power system is a closed loop auto-control syetem,in which the reference and feedback are the key parts of the AC power system.Two familiar references which are sine wave and volts DC that used in AC power system are introduced.At the same time,two familiar feedback circuits which are peak value feedback and average value feedback are discussed,then the difference between them are compared.The auto-control theory is used to analyze the influence for AC power system due to the inappropriately design for the reference and feedback.In the end,the solutions for eliminating the static error by applying RMS convert circuit are presented.