变频空调电网适应性电源变换控制技术研究  

Research on Power Conversion Control Technology for the Grid Adaptability of Variable Frequency Air Conditioners

作　　者：胡斌 HU Bin(Guangdong Midea Refrigeration Equipment Co.,Ltd.,Foshan,Guangdong Province,528311 China)

机构地区：[1]广东美的制冷设备有限公司,广东佛山528311

出　　处：《科技资讯》2023年第24期54-57,共4页Science & Technology Information

摘　　要：当电网电压不稳定时,电网供电的变频空调容易因母线电压不稳定而触发降频运行或者故障保护停机。为增强变频空调的电网适应性,构建了考虑输入电流控制器的电源变换系统小信号模型,并设计了基于线性二次型调节性能的母线电压控制器。实验结果表明,所设计的控制器相对于传统的PI控制器具有更优异的母线电压调节性能,大大提高了母线电压的稳定性。When the voltage of the power grid is unstable,the variable frequency air conditioner powered by the power grid is prone to trigger frequency reduction operation or fault protection shutdown due to the unstable bus voltage.To enhance the power adaptability of variable frequency air conditioners,a small signal model of the power conversion system which considers the input current controller is constructed,and a bus voltage controller based on linear quadratic regulation performance is designed.The experimental results show that the designed controller has better bus voltage regulation performance than traditional PI controllers,greatly improving the stability of bus voltage.

关 键 词：电网适应性 电源变换系统 线性二次型调节 鲁棒性 

分 类 号：TU85[建筑科学]