引入主动阻尼的PMSM电流环控制策略研究
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摘要
为了提高永磁同步电机(PMSM)电流环的抗扰动性能,在电流环控制器中引入主动阻尼控制,针对主动阻尼对控制系统固有延时敏感的问题,提出了一种引入主动阻尼控制加Smith预估器的控制方法。该方法采用Smith预估器对控制系统固有延时进行补偿,可降低系统延时对主动阻尼控制性能的影响,提高了电流环的动态性能,并分析了Smith预估器对模型参数失配的鲁棒性。实验结果验证了所提方法的有效性和正确性。
In order to improve the anti-disturbance performance of the permanent magnet synchronous motor(PMSM) current loop,active damping control is introduced in current loop controller.Aiming at the problem that the active damping is sensitive to the inherent delay of the control system, a control method with active damping control and Smith predictor is proposed.The method uses Smith predict controller to compensate the inherent delay of the control system,which reduces the impact of system delay on active damping control performance and improves the dynamic performance of the current loop.In addition,the robustness of the Smith predictor controller to model parameter mismatch is analyzed.The validity and correctness of the proposed method are verified by experimental results.
In order to improve the anti-disturbance performance of the permanent magnet synchronous motor(PMSM) current loop,active damping control is introduced in current loop controller.Aiming at the problem that the active damping is sensitive to the inherent delay of the control system, a control method with active damping control and Smith predictor is proposed.The method uses Smith predict controller to compensate the inherent delay of the control system,which reduces the impact of system delay on active damping control performance and improves the dynamic performance of the current loop.In addition,the robustness of the Smith predictor controller to model parameter mismatch is analyzed.The validity and correctness of the proposed method are verified by experimental results.
引文
[1] Huang Y,Xiong S.IMC-based Current Observer for PMSM[J].IEEE Trans. on Electronics Letters,2015,51(25):2100-2102.
[2]李福,廖勇,林豪.引入主动电阻的永磁同步电机电流环改进控制策略研究[J].中国电机工程学报,2017,37(15):4495-4502.
[3]廖勇,李福,林豪.基于虚拟阻抗的永磁同步电机电流环控制策略[J].中国电机工程学报,2017,37(19):5759-5766.
[2]李福,廖勇,林豪.引入主动电阻的永磁同步电机电流环改进控制策略研究[J].中国电机工程学报,2017,37(15):4495-4502.
[3]廖勇,李福,林豪.基于虚拟阻抗的永磁同步电机电流环控制策略[J].中国电机工程学报,2017,37(19):5759-5766.