CAJ | 학술논문

传统矢量控制没有考虑感应电机铁耗,造成转子磁场定向不精确,控制性能下降. 在两相旋转坐标系下建立了考虑铁耗的感应电机动态等效数学模型. 基于不考虑与考虑铁耗的电机模型,对传统矢量控制的控制性能进行了分析,结果表明铁耗导致传统矢量控制中转子磁场定向存在偏差、电机输出转矩值下降,从而降低了电机动态响应性能.本文基于考虑铁耗的感应电机动态等效数学模型,提出优化的矢量控制及磁通观测方法,提高了电机的控制性能. 实验结果验证了优化后的矢量控制的有效性.
전통시량공제몰유고필감응전궤철모,조성전자자장정향불정학,공제성능하강. 재량상선전좌표계하건립료고필철모적감응전궤동태등효수학모형. 기우불고필여고필철모적전궤모형,대전통시량공제적공제성능진행료분석,결과표명철모도치전통시량공제중전자자장정향존재편차、전궤수출전구치하강,종이강저료전궤동태향응성능.본문기우고필철모적감응전궤동태등효수학모형,제출우화적시량공제급자통관측방법,제고료전궤적공제성능. 실험결과험증료우화후적시량공제적유효성.
Conventional vecotr controll doesn ' t take iron loss of induction motor into account ,so it causes field orientation angle error , torque decreasing and slower speed response .The dynamic equivalent mathematical model of induction motor considering iron loss is established under rotor flux oriented d -q coordinate .And the performance of conventional vector control between the motor model without considering iron loss and the one taking iron loss into account is analyzed contrastively .It is manifested that the error between conventional rotor flux estimation and actual rotor flux does exist due to iron loss ,and it also makes actual output torque not reach reference torque command .Therefore ,a kind of compensator based on dynamic equivalent mathematical model of motor considering iron loss is developed to modify conventional vector control and rotor flux orienta -tion,and the performance of vector control is improved .At last,the validity of compensation method of vector controll is verified by experiment results .