CAJ | 학술논문

介绍了基于五电平逆变器的异步电机矢量控制方法。提出了一种适用于中点钳位 H 桥五电平逆变器的空间矢量脉宽调制（SVPWM）算法，该算法先将参考电压矢量经过旋转处理都落于第一扇区，再利用十二条规则来判断其在第一扇区的具体小三角形区域。为防止逆变器输出矢量在扇区切换时发生突变，让两相邻小三角形区域的输出矢量变化方向相反。根据异步电机的数学模型及其按转子磁链定向的矢量控制方法对定子电压方程解耦可独立控制异步电机的定子电流励磁和转矩分量。仿真结果表明，该系统具有良好的静动态性能。
개소료기우오전평역변기적이보전궤시량공제방법。제출료일충괄용우중점겸위 H 교오전평역변기적공간시량맥관조제（SVPWM）산법，해산법선장삼고전압시량경과선전처리도락우제일선구，재이용십이조규칙래판단기재제일선구적구체소삼각형구역。위방지역변기수출시량재선구절환시발생돌변，양량상린소삼각형구역적수출시량변화방향상반。근거이보전궤적수학모형급기안전자자련정향적시량공제방법대정자전압방정해우가독립공제이보전궤적정자전류려자화전구분량。방진결과표명，해계통구유량호적정동태성능。
This paper introduces the vector control method of the induction motor based on the five-level inverter. A simple algorithm of space vector pulse width modulation (SVPWM) is proposed, which can be applied to the diode neutral point clamped (NPC) H-Bridge five-level inverter. In the algorithm, the reference voltage vector is rotated to the first sector firstly, and then the small triangle of the first sector the rotation-processed reference voltage lying is determined by twelve judging rules. The output vector of the two adjacent triangles changes in the opposite direction to eliminate the output voltage vector shift when sector changes. To control the stator flux current and torque current independently, the stator voltage equation is decoupled on the basis of the mathematical model of the AC induction motor and the basic principles of rotor field oriented vector control. Simulation results show that the system has good static and dynamic performance.