鉴于矢量控制对电机参数依赖性强的问题,借鉴现有永磁同步电机数学模型及其直接转矩控制的相关理论,分析同步磁阻电机的数学模型,提出了同步磁阻电机的直接转矩控制方法,包括空间电压矢量的计算、磁链和转矩的滞环控制等;并基于位置信息的估算,设计了速度的闭环控制器.构建了系统的仿真模型,并对电机的稳态和动态性能进行了仿真分析.由仿真结果可知,所提方法设计的系统能够在较宽的转速范围内变速运行.%In view of the vector control of motor parameter dependent problems,based on the relevant theory of the existing mathematical model of permanent magnet synchronous motor and direct torque control,synchronous reluctance motor mathematical analysis,the direct torque control method of synchronous reluctance motor was proposed.It includes the calculation of space voltage vector,hysteresis control of flux linkage and torque,etc.based on the estimation of position information,a PI controller with integral separation was introduced,and a closed-loop controller of speed was designed.The simulation model of the system was built,and the steady-state and dynamic performances of the motor were simulated and analyzed.The result showed that the system designed based on this method could change speed at a wide speed range.
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