基于电感模型的开关磁阻电机无位置传感技术

Inductance Model-Based Sensorless Control of the Switched Reluctance Motors

基于开关磁阻电机(SRM)的电感模型,提出了一种新的无位置传感技术。在推导无位置传感器相关公式的基础上,构建了无位置传感器控制系统,并对该系统进行了仿真计算,应用FPGA可编程逻辑控制器研制了转子位置估计模块,设计DSP数字信号处理系统实现对开关磁阻电机的控制。实验结果表明该方法能在较宽调速范围内(0～3000r/min)准确地估计开关磁阻电机的位置。

A sensorless control scheme for switched reluctance motor （SRM） drives based on inductance model was presented in this paper. The inductance of each active phase was estimated using the terminal measurement of the phase. The theoretical aspects of the proposed sensorless scheme were first described. Simulation was carried out and demonstrate the feasibility of this scheme in detail. The control system along with hardware aspects of the sensorless were discussed briefly. A module to estimate the rotor position was designed based on FPGA. The control of SRM was actualized based on DSP. The experiment results were presented to verify the proposed sensorless method, which can estimate the rotor position of SRM in a wide adjustable speed range （0-3 000r/min） .