CAJ | 학술논문

双三相电机四维电流矢量控制可以对六相逆变器死区效应和两套三相绕组不对称运行进行补偿。四维电流控制需要对两个子平面的参考电压同时控制，采用传统四矢量空间矢量脉宽调制(space vector pulse width modulation，SVPWM)策略较为复杂，且六相逆变器四矢量 SVPWM 具有脉宽调制(pulse width modulation，PWM)波形不对称，开关损耗较大等问题，采用基于载波脉宽调制的双零序注入PWM策略来实现四维电流矢量控制更为合适。通过分析过调制区基于中间矢量算法在 z1-z2子平面注入的谐波电压，将双零序注入PWM策略的调制范围推广到过调制区，最后根据电压调制范围和电流控制维数，将基于双零序注入PWM策略的双三相永磁同步电机矢量控制分为3个调制区：正弦电流调制区，正弦电压调制区和过调制区，使其在线性调制区和过调制区之间可以平滑的过渡。实验结果验证了控制策略的有效性和可行性。
쌍삼상전궤사유전류시량공제가이대륙상역변기사구효응화량투삼상요조불대칭운행진행보상。사유전류공제수요대량개자평면적삼고전압동시공제，채용전통사시량공간시량맥관조제(space vector pulse width modulation，SVPWM)책략교위복잡，차륙상역변기사시량 SVPWM 구유맥관조제(pulse width modulation，PWM)파형불대칭，개관손모교대등문제，채용기우재파맥관조제적쌍령서주입PWM책략래실현사유전류시량공제경위합괄。통과분석과조제구기우중간시량산법재 z1-z2자평면주입적해파전압，장쌍령서주입PWM책략적조제범위추엄도과조제구，최후근거전압조제범위화전류공제유수，장기우쌍령서주입PWM책략적쌍삼상영자동보전궤시량공제분위3개조제구：정현전류조제구，정현전압조제구화과조제구，사기재선성조제구화과조제구지간가이평활적과도。실험결과험증료공제책략적유효성화가행성。
The effect of six-phase voltage source inverter(VSI)dead-time and asymmetric operation for two sets of three-phase windings can be compensated by four- dimension current vector control for dual three-phase motor. Four-dimension current control need control the reference voltage vector both inα-β subspace andz1-z2 subspace simultaneously, so the difficulties ware improved greatly when four-vector space vector pulse width modulation (SVPWM) strategy was adopted, the pulse width modulation (PWM) waveform was asymmetrical and the switching loss was large when the four-vector SVPWM was adopted for six-phase VSI. So the double zero-sequence injection PWM strategy based on carrier-based pulse width modulation (CBPWM) was more appropriate for four-dimensional current vector control. The injected harmonics voltage inz1-z2 subspace can be calculated by analyzing the overmodulation algorithm based on intermediate vector, the modulation range of double zero-sequence injection PWM can be extended to the overmodulation region. The total control range was divided into three segment, sinusoidal current modulation region, sinusoidal voltage modulation region, and overmodulation region by the voltage modulation range and current control dimension, and it allows smooth transitions from the linear modulation region to the overmodulation region. Experimental results demonstrated the effectiveness and feasibility of the proposed control strategy.