摘要
为了降低电网电流谐波,前端带整流电路的永磁同步电机(PMSM)驱动系统通常使用无源滤波器,故在减小直流电容时需考虑LC谐振和负输入阻抗的问题。对此,提出了一种主动阻尼控制方案,其通过阻尼电流控制来抑制LC谐振,并可设置PMSM驱动系统的极点分布。主动阻尼控制方案通过电压指令实现,可以克服电流控制器的有限带宽限制。较之传统虚拟阻抗方法,主动阻尼控制方案可通过伯德图精确地优化参数。最后,通过实验验证了主动阻尼控制方案的效果。
In order to reduce the harmonics of the grid current,the permanent magnet synchronous motor(PMSM)driving system with rectifier circuit on the front end usually uses a passive filter,so the problem of LC resonance and negative input impedance should be considered when reducing the DC link capacitor.In this regard,an active damping control scheme was proposed,which suppressed the LC resonance by damping current control,and could formulate the pole distribution of the PMSM driving system.The active damping control scheme was realized by voltage commands and could overcome the limited bandwidth of the current controller.Compared to the traditional virtual impedance methods,the active damping control scheme can accurately optimize the parameters through the Bode diagrams.Finally,the effect of the active damping control scheme was verified by experiments.
作者
李丽
连黎明
LI Li;LIAN Liming(Mechanical and Electrical Engineering College,Xinxiang University,Xinxiang 453000,Henan,China)
出处
《电气传动》
2021年第1期34-39,共6页
Electric Drive
基金
河南省高等学校重点科研项目(17B460008)。
关键词
永磁同步电机
电机驱动
主动阻尼
电容减小
permanent magnet synchronous motor(PMSM)
motor driving
active damping
capacitance reduction
