【摘要】 为解决不可重构区域内的相电流重构问题,同时减小对相电流谐波含量的影响,提出了一种基于多调整策略的电机相电流重构技术。对电压矢量空间的不可重构区域进行划分,通过在不同的区域内采用不同的调整策略实现相电流重构。最后利用Matlab/simulink搭建基于相电流重构的永磁同步电机SVPWM矢量控制仿真模型。仿真结果表明该方案能够在不可重构区域内对相电流进行有效重构,同时能够在电机的带负载启动、切换负载以及电机加减速的过程中有效实现相电流的重构。FFT分析结果表明该方案对于相电流的谐波影响较小。更多还原

【Abstract】 To solve the problem of phase current reconstruction in a non-reconstructable area, while reducing the impact on the phase current harmonic content, this paper proposes a motor phase current reconstruction technology based on multiple adjustment strategies. The non-reconstructable area of the voltage vector space is divided, and the phase current reconstruction is realized by adopting different adjustment strategies in different areas. Finally, Matlab/simulink is used to build a permanent magnet synchronous motor SVPWM vector control simulation model based on phase current reconstruction. The results show that this scheme can effectively reconstruct the phase currents in the non-reconstructable area. At the same time the phase current can effectively be reconstructed in the process of the starting of the motor with load, switching the load, and acceleration and deceleration of the motor. The FFT analysis results show that the impact on the harmonics of the phase current of this scheme is small.更多还原