摘要
为解决三相并网逆变器由于死区效应而产生的电压误差扰动的问题,给出了一种在线检测的补偿方法。由并网逆变器的特性,并根据并网逆变器的数学模型,给出了一种无需判断采样过零点而直接得到死区补偿电压的补偿观测器。该方法减少了因相电流过零箝位造成电流方向检测不准引起的误差,改善了并网电流的质量。通过仿真和实验进一步验证了该方法的有效性。
In order to solve the problem of the voltage error due to the disturbance and the three-phase inverter with dead time effect arising,a method for compensating online detection is presented.By the characteristics of grid-con- nected inverter and grid-connected inverter according to a mathematical model, a judge without sampling the zero crossings and dead-time compensation voltage directly compensated observer is presented.This method reduces the er- ror because the zero-phase detection inaccuracy caused by current zero clamp, and improves the quality of the net- work current.The simulation and experiments verify the effectiveness of the method.
出处
《电力电子技术》
CSCD
北大核心
2016年第9期41-43,共3页
Power Electronics
基金
上海市科技创新行动计划地方院校能力建设项目(13160500900)
上海市自然科学基金(12ZR14121100)
关键词
逆变器
死区补偿
观测器
inverter
dead-time compensation
observer
