摘要
讲述了永磁同步电机(PMSM)的运行原理,根据其数学模型对其弱磁原理进行介绍.传统的永磁同步电机控制通常使用PI调节器的方法,通过一系列坐标变换将交流量转为直流值,并用PI调节器对其进行跟踪,为达到良好效果,常需附加随系统运行温度变换的交叉耦合项和前馈补偿项,使整个控制系统的鲁棒性降低,在额定转速以上比较高的速度运行时其负面影响尤为明显.分析了比例谐振(proportional resonant,PR)控制器特,提出了一种基于PR控制器及转子磁链定向的移相弱磁控制策略.最后用MATLAB进行仿真,结果表明该控制策略具有良好的鲁棒性和动态性能,验证了该方法的正确性.
This paper described the operating principles of permanent magnet synchronous motor,and introduced weakening principle due to its mathematical models.In the traditional control method of permanent magnet synchronous motor,it usually uses PI adjuster,through a series of coordinate transformation exchanging AC signal to dc signal,and does the tracking by PI adjuster,to achieve good results.It often needs additional cross coupling term and a feed-forward compensation changed with system operation temperature,making the robustness of the whole control system reduced.When speed is high above the rated one,its negative influence is especially remarkable.The paper analyzed the proportional resonant（PR） controller features,combined with permanent magnet synchronous motor mathematical model,and presented a control method based on a PR controller and phase-shift flux weakening control strategy.Finally,MATLAB was used to simulate the model above.Results show the system got good dynamic and static responses,verifying the correctness and feasibility of the proposed method.
出处
《湘潭大学自然科学学报》
CAS
CSCD
北大核心
2011年第4期108-112,共5页
Natural Science Journal of Xiangtan University
基金
湖南省自然科学基金项目(11JJ9010)
衡阳市科学技术发展项目(2011GK71)
湖南工学院科学研究项目(HY08009)
