摘要
三相电流型PWM整流器交流侧常采用LC滤波器来滤除谐波和辅助开关器件换流,但LC滤波器具有谐振特性,存在谐振尖峰,当控制量或负载变化时,会引起系统暂态振荡以及网侧电流谐波畸变。针对上述问题,提出了一种基于αβ坐标系的电感电压反馈的有源阻尼控制方法。该方法的实现不需要进行锁相环控制和dq坐标解耦,电感电压反馈的有源阻尼控制可以有效抑制LC滤波器谐振尖峰。最后通过MATLAB仿真和实验验证了所提方法的有效性和实用性。
LC filters are often used in AC side of three-phase current source pulse width modulation(PWM)current source rectifier(CSR)to filter harmonics and auxiliary switch devices converter.While the LC filter has the feature of resonance and exists resonance peak,which will cause the system oscillatory transient and grid-side current harmonic distortion when the input of the system or load change.Aiming at the above problems,a method of active damping control method of the inductor voltage feedback underαβcoordinates is proposed.It does not require phase-locked loop control or dq coordinate decoupling.Combining with the active damping control of inductive voltage feedback,the method is implemented under theαβcoordinate to suppress LC filter resonance peak effectively.Finally,the effectiveness and practicability of the proposed method are verified by MATLAB simulation and experiments.
作者
李练兵
王玲珑
岳东华
祝亚尊
陈黎
Li Lianbing;Wang Linglong;Yue Donghua;Zhu Yazun;Chen Li(School of Artificial Intelligence,Hebei University of Technology,Tianjin 300130,China)
出处
《电测与仪表》
北大核心
2019年第21期96-102,共7页
Electrical Measurement & Instrumentation
基金
国网天津市电力公司科技项目(SGTJCD00FZJS1801722)
