CAJ | 학술논문

为改善六相永磁同步电机一相开路故障后的性能，建立了适用于容错控制的静止坐标变换阵，并建立了考虑3次谐波影响的旋转坐标系下的电压和转矩方程。针对一次旋转坐标变换不能对电压模型完全解耦的情况，提出对d-q子空间应用二次旋转坐标变换得到完全解耦的 d-q 轴电压分量。提出了基于磁势不变原则的定子电流幅值最小(stator current magnitude minimum，SCMM)闭环控制策略，为抑制3次谐波磁链和3次谐波电感作用，推导了d-q轴三次谐波电压的补偿量。仿真和实验验证了提出的补偿控制策略对三次谐波影响消除的有效性，明显改善了定子电流幅值最小控制策略下单相开路后的性能。
위개선륙상영자동보전궤일상개로고장후적성능，건립료괄용우용착공제적정지좌표변환진，병건립료고필3차해파영향적선전좌표계하적전압화전구방정。침대일차선전좌표변환불능대전압모형완전해우적정황，제출대d-q자공간응용이차선전좌표변환득도완전해우적 d-q 축전압분량。제출료기우자세불변원칙적정자전류폭치최소(stator current magnitude minimum，SCMM)폐배공제책략，위억제3차해파자련화3차해파전감작용，추도료d-q축삼차해파전압적보상량。방진화실험험증료제출적보상공제책략대삼차해파영향소제적유효성，명현개선료정자전류폭치최소공제책략하단상개로후적성능。
To improve the performance of six-phase permanent magnet synchronous generator (PMSG) after the occurrence of single-phase open-circuit fault, a stationary coordinate transform matrix suit to fault-tolerant control strategy is built and voltage and torque equations in rotating coordinate system, in which the affect of the third harmonics is considered, are established. In allusion to the situation that the voltage model cannot be completely decoupled by once of rotating coordinate transformation, it is proposed to apply rotating coordinate transformation twice to the d-q sub-space to achieve completely decoupled voltage components on d-q axis. Based on the invariance principle of magnetic potential, a closed-loop control strategy of stator current magnitude minimum (SCMM) is given, and to suppress the affects of the third harmonic magnetic flux linkage and the third harmonic inductance, the compensation quantities for the third harmonic voltages on d-q axis are derived. The validity of suppressing the affect of the third harmonic by the proposed compensation and control strategy is verified by results of simulation and experiments, and the performance of six-phase PMSG after the occurrence of single-phase open-circuit fault under the control strategy of SCMM is evidently improved.