六相永磁同步发电机容错控制的谐波补偿研究

发布时间：2018-01-30 21:51

本文关键词： 六相永磁同步发电机容错控制定子铜耗最小次谐波影响　出处：《电机与控制学报》2014年01期 　论文类型：期刊论文

【摘要】：针对六相永磁同步发电机一相开路后的3次谐波影响,建立了扩展的六相静止坐标变换阵,并根据该矩阵和旋转坐标变换阵建立了电压和转矩数学模型,并且分析了经过扩展变换阵变换后的电压方程中d-q子空间的耦合关系,提出了消除解耦后d-q轴电压耦合的2次旋转坐标变换阵。考虑到3次谐波磁链和电感对六相永磁同步发电机容错模式下的电压和转矩的影响,提出了基于定子铜耗最小约束下的闭环控制策略,针对电压和转矩中的3次谐波扰动,推导了闭环控制中的谐波补偿表达式。仿真和实验验证了提出的补偿控制策略对3次谐波影响消除有效性,明显改善了容错控制策略在单相开路后的性能。
[Abstract]:The extended six-phase static coordinate transformation matrix is established for the third-harmonic effect of six-phase PMSG after the one-phase open circuit, and the mathematical model of voltage and torque is established according to the matrix and rotating coordinate transformation matrix. And the coupling relation of d-q subspace in the voltage equation transformed by extended transformation matrix is analyzed. The second order rotation coordinate transformation matrix is proposed to eliminate the decoupling d-q axis voltage coupling. The influence of the third harmonic flux and inductance on the voltage and torque of the six-phase permanent magnet synchronous generator in fault-tolerant mode is considered. A closed-loop control strategy based on the minimum stator copper loss constraint is proposed to deal with the third harmonic disturbance in voltage and torque. The harmonic compensation expression in the closed-loop control is derived. The simulation and experiments show that the proposed compensation control strategy is effective in eliminating the third-order harmonic effect, and the performance of the fault-tolerant control strategy after the single-phase open circuit is obviously improved.
【作者单位】：哈尔滨工业大学电气工程及自动化学院;
【基金】：国家自然科学基金面上项目(51177026)
【分类号】：TM31
【正文快照】： 0引言多相永磁同步电机在近几年获得了广泛的关注[1-2],其具有低压大功率输出、容错能力强等特点[3-5]。多相永磁同步发电机通过增加定子绕组的相数,降低了相电流,解决了并联变流器中的环流问题,对于3的倍数相电机,根据中性点的不同连接方式,可以通过绕组串联实现中压并网,解

【参考文献】