CAJ | 학술논문

盘式无铁心永磁同步电机具有过载能力强、无定子齿槽、反电势为正弦波等优点，但是由于电机具有绕组电感很小的特点，采用传统电压型逆变器驱动方式的控制效果并不理想。该文针对此类电机的特点，提出了一种新型的控制策略：在逆变桥前端加入电流型斩波电路，根据角度传感器反馈的转子角度值，结合提出的电流控制算法来实时调整定子绕组电流，从而实现电机的转矩控制。并对其工作原理进行了系统的理论分析。仿真和实验结果证实了控制方法的有效性，解决了因电枢电感小而导致定子电流不连续的问题。
반식무철심영자동보전궤구유과재능력강、무정자치조、반전세위정현파등우점，단시유우전궤구유요조전감흔소적특점，채용전통전압형역변기구동방식적공제효과병불이상。해문침대차류전궤적특점，제출료일충신형적공제책략：재역변교전단가입전류형참파전로，근거각도전감기반궤적전자각도치，결합제출적전류공제산법래실시조정정자요조전류，종이실현전궤적전구공제。병대기공작원리진행료계통적이론분석。방진화실험결과증실료공제방법적유효성，해결료인전추전감소이도치정자전류불련속적문제。
ABSTRACT:The disc coreless permanent magnet synchronous motor is able to deliver strong overload ability, zero cogging torque, the sinusoidal distribution of flux density, the small armature reaction and the linear parameters etc. But for the coreless structure, the motors tend to have low inductance. As a result, the motor winding current experiences very high ripple current and the large motor torque ripple if driven from conventional drivers with the pulse width modulation (PWM) control based on voltage source inverter(VSI).To solve this problem, a novel automatic control method based on a current chopper converter has been proposed. The current was regulated by the proposed current control algorithmaccording to the value of the angle of the rotor angle sensor feedback, and the torque has been controlled. The problem of discontinuous currents caused by the low inductance has been solved by the control strategy proposed in this paper. The operating principle of the system has been analyzed.Simulation and experimental results confirm the validity of the proposed control method.