CAJ | 학술논문

直线异步电动机具有良好的直接驱动特性,但与旋转电动机相比,其效率较低.本文建立了包含铁损电阻的电动机同步坐标模型,铁损电阻并联在初级励磁回路旁,而不是并联在互感支路旁,因此包含了初级漏感对电动机铁心损耗的影响,推导损耗方程并提出了基于模型法的效率优化控制算法.通过仿真和实验验证,结果表明本文提出的效率优化控制方法能够提高直线异步电动机轻载时的运行效率,而且优化算法对电动机动态特性没有产生明显的影响.
직선이보전동궤구유량호적직접구동특성,단여선전전동궤상비,기효솔교저.본문건립료포함철손전조적전동궤동보좌표모형,철손전조병련재초급려자회로방,이불시병련재호감지로방,인차포함료초급루감대전동궤철심손모적영향,추도손모방정병제출료기우모형법적효솔우화공제산법.통과방진화실험험증,결과표명본문제출적효솔우화공제방법능구제고직선이보전동궤경재시적운행효솔,이차우화산법대전동궤동태특성몰유산생명현적영향.
Linear induction motor (LIM) has good direct drive ability though the efficiency is poorer compared to its rotary counterpart. The motor model including iron loss under synchronous coordination is established and variable motor loss function is deduced in the paper, the iron loss resistance is paralleled with primary magnetizing branch instead of mutual magnetizing branch to include the primary leakage inductance influence on the motor loss. The efficiency optimized control (EOC) algorithm based upon the motor loss model is proposed. The simulation and experiment are carry out for validation and the results show that the control scheme presented in the paper can significantly improve the motor efficiency when the linear motor is operating under light load condition, and the EOC scheme does not significantly deteriorate the dynamic property of motor operation.