大功率永磁同步电机发电运行状态下的单位功率因素控制研究  

Research on Unit Power Factor Control of High-power PMSM in the Power Generation State

作　　者：张永刚 

机构地区：[1]甘肃中医药大学定西校区,信息工程学院,甘肃兰州730000

出　　处：《电气自动化》2017年第6期15-16,46,共3页Electrical Automation

基　　金：甘肃省教育厅科研资助项目(15C0324)

摘　　要：研究了永磁同步电机PWM变流器的运行特性,详细介绍了PWM变流器的运行状态。在PMSG-PWM相量图和数学模型的基础上,针对变流器单位功率因数制策略,理论分析并推导了永磁同步电机发电的稳态运行特性,总结了永磁同步电机发电运行时的定子相电压、相电流、功率因数和极限功率的变化规律。在MATLAB/Simulink平台上基于同一样机建立了高功率因素控制策略的仿真模型并进行了动态仿真,分析了控制策略的基波性能和谐波影响。仿真结果验证了控制策略的可行性及理论分析的正确性。对永磁同步电机的发电运行控制有一定的理论意义和工程价值。The operating characteristics of the permanent magnet synchronous motor( PMSM)-PWM converter was studied and its operational state was introduced in detail. On the basis of a PMSM-PWM phasor diagram and mathematical model,with respect to the unit power factor control strategy of the converter,the steady-state generation characteristics of PMSM were analyzed and reduced. The change rules of phase voltage,phase current,power factor and limit power of its stator during generation operation were summarized. On the MATLAB/Simulink platform,based on the same prototype,we established a simulation model of the high-power factor control strategy,completed a dynamic simulation,and analyzed the performance of the fundamental wave and the influence of the harmonic wave of the control strategy. Simulation results verify the feasibility of the proposed control strategy as well as the correctness of the theoretical analysis. This scheme has theoretical significance and engineering value for the control of PMSM generation operation.

关 键 词：永磁同步电机 发电运行 PWM变流器 单位功率因数控制 仿真模型 

分 类 号：TM341[电气工程—电机]