CAJ | 학술논문

双逆变器供电的开放式绕组永磁同步电机(open-end winding permanent magnet synchronous motor，OEW-PMSM)系统作为一种新型电机驱动拓扑，其直流母线电压利用率高、绕组电流控制自由度大、容错能力强，在电力拖动领域具有良好的应用价值。该文建立了OEW-PMSM的数学模型及其采用双逆变器供电的矢量控制系统，结合双逆变器工作原理和输出矢量，分析系统零序电压和零序电流问题，采用不产生零序电压的电压矢量进行空间矢量脉宽调制(space vector pulse width modulation，SVPWM)来消除零序电压，并给出实现算法。在采用消除零序电压的SVPWM 控制时，双逆变器供电的OEW-PMSM 可以将基速提高为星接绕组时的1.7倍，降低了系统弱磁设计和控制的难度。仿真和实验验证了所提方法的正确性和可行性。
쌍역변기공전적개방식요조영자동보전궤(open-end winding permanent magnet synchronous motor，OEW-PMSM)계통작위일충신형전궤구동탁복，기직류모선전압이용솔고、요조전류공제자유도대、용착능력강，재전력타동영역구유량호적응용개치。해문건립료OEW-PMSM적수학모형급기채용쌍역변기공전적시량공제계통，결합쌍역변기공작원리화수출시량，분석계통령서전압화령서전류문제，채용불산생령서전압적전압시량진행공간시량맥관조제(space vector pulse width modulation，SVPWM)래소제령서전압，병급출실현산법。재채용소제령서전압적SVPWM 공제시，쌍역변기공전적OEW-PMSM 가이장기속제고위성접요조시적1.7배，강저료계통약자설계화공제적난도。방진화실험험증료소제방법적정학성화가행성。
Open-end winding permanent magnet synchronous motors (OEW-PMSMs) fed by dual inverters as a kind of novel drive topology have competitive application prospects in the electric drive field for their high utility of DC-link voltage, more control freedoms of currents and good fault-tolerant ability. The mathematic model and vector control system fed by the dual inverter of OEW-PMSMs were built. Based on the principle and output voltage vectors of the dual inverter, the zero-sequence voltage and current were analyzed, and a SVPWM switching strategy which employs voltage vectors that do not contribute to zero-sequence voltage was proposed to eliminate zero-sequence voltage. And, its implement algorithm was discussed. The basic speed of the OEW-PMSM fed by the dual inverter with the zero-sequence voltage eliminated SVPWM strategy can be improved to 1.7 times of the star-connected winding permanent magnet synchronous motor (SCW-PMSM). Therefore, the difficulty of their flux-weakening design and control can be reduced greatly. The proposed method is validated by simulation and experimental results.