Adaptive Predictive Proportional-integral-resonant Current Control for Permanent Magnet Synchronous Motors
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摘要: 考虑数字控制系统一个采样周期输入延时和驱动器功率管非线性特性的影响，为增强永磁同步电机（Permanent magnet synchronous motor，PMSM）电流环稳定性和提高电流控制精度，提出一种自适应预测比例-积分-谐振控制（Adaptive predictive proportional-integral-resonant，APPI-RES）策略.该方法能够在电机电阻和电感参数不确定的条件下，预测电流控制误差和未知周期电压扰动，将所得预测量执行反馈控制，实现了对系统输入延时和相电流谐波的有效补偿.最后，通过仿真分析验证了所提控制策略的有效性.
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关键词:
- 永磁同步电机 /
- 自适应预测比例-积分-谐振控制器 /
- 输入延时 /
- 参数不确定 /
- 相电流畸变
Abstract: In order to enhance the stability of current loop and to improve the current control accuracy, an adaptive predictive proportional-integral-resonant (APPI-RES) current control strategy is proposed, in which the one cycle delay of digital control system and the nonlinear characteristic of voltage source inverter (VSI) are considered. The proposed method can predict the control errors of currents, unknown constant and periodic voltage disturbances when the resistor and inductance of the motor are unknown. Then, the predicted variables are used to execute the feedback control to compensate the system input delay and the phase current harmonics effectively. At last, simulation results verify the feasibility of the control strategy.1) 本文责任编委 梅生伟 -
图 1 采用APPI-RES电流控制器的PMSM驱动系统框图
Fig. 1 Block diagram of PMSM driving system using APPI-RES current controller
图 16 $q$轴电流误差及其预测值(APPI-RES)
Fig. 16 Current error and its predictive value of $q$ axis (APPI-RES)
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