改进的转子超导永磁电机模型及电流畸变抑制  

Improved Superconducting Permanent Magnet Motor Model and Current Distortion Suppression

作　　者：隋洪毅[1] 

机构地区：[1]河南工程学院经济贸易学院,郑州451191

出　　处：《科技通报》2014年第4期158-160,共3页Bulletin of Science and Technology

摘　　要：传统的反电势转子超导永磁电机模型在对电流导数运算时需要进行偏微分计算,导致系统高频噪声扩大,产生电流畸变。利用转子磁场坐标系的高频抑制性能,提出一种改进的转子超导永磁电机模型,新模型在转子磁场坐标系中利用仿射变换方法替代传统的微分运算计算电流矢量导数,对高频噪声能有效抑制,在传统的反电势电机模型上增加一个跟踪误差补偿项,补偿电流畸变不确定性。设计出转子磁场坐标下的超导永磁电机预测控制系统模型结构。仿真实验表明,改进模型能有效对电机模型的电流畸变进行抑制,降低转矩波动,电流控制误差降低50%,电流轨迹波动呈现规则圆形,改进方法能有效地将电流畸变控制在理想范围之内。Using the high frequency suppression performance of the rotor coordinate system, an improved superconductingpermanent magnet motor model was proposed, the affine transformation method was used to replace the traditional differential operation derivative calculation for current vector. The high frequency noise was suppressed, and the tracking errorcompensation in the back EMF about the traditional model was added to compensate the current distortion uncertainty, thecontrol system model structure and the control prediction algorithm was designed in the magnetic field coordinates for thepermanent magnet motor. Simulation result shows that the improved model can suppress the current distortion effectively,and reduce the torque ripple, and the current control error is reduced by 50%, the current track volatility rules round. It cancontrol the current distortion in the ideal range effectively.

关 键 词：电机模型 电流畸变 控制 

分 类 号：TM34[电气工程—电机]