一种光耦隔离电路及其在并网逆变器中的应用  

A Novel Optically Coupled Isolation Circuit and Its Application in Grid-connected Inverter

作　　者：张逸飞[1] 孙绍华[2] 羊绛军[1] 王立伟[1] 

机构地区：[1]哈尔滨工业大学,黑龙江哈尔滨150001 [2]青岛科技大学自动化与电子工程学院,山东青岛261500

出　　处：《佳木斯大学学报（自然科学版）》2009年第5期661-664,共4页Journal of Jiamusi University：Natural Science Edition

摘　　要：介绍一种由普通光电耦合器设计而成的新型光耦隔离电路,它能较好的隔离输入输出信号,抑制串入的干扰噪声.该光耦隔离电路采用差分法和偏置法,具有结构简单、线性度好、成本低等优点.详述了该电路各部分的作用,并将其应用到三相并网逆变器中做了相关实验,实验表明该电路具有精度高、稳定性好等特点,验证了理论分析的正确性.A new optically coupled isolation circuit with common opto-electronic coupler is introduced.It can isolate the input and output signals and restrain noise.This circuit adopts difference and offset method and has some advantages such as simple structure,high stability,fine linearity and low price.All parts of the circuit are presented.The experimental system shows that the circuit has high accuracy and good stability.The analyses of theories are verified in a three-phase grid-connected inverter.

关 键 词：普通光电耦合器 线性 稳定 

分 类 号：TM131.42[电气工程—电工理论与新技术]