参数在线辨识的大功率开关磁阻电机可逆控制

Reversible control of high-power switched reluctance motor based on parameter on-line identification

为了减小开关磁阻电机模型参数变化对电机性能的不利影响,采用最小二乘法对磁链模型参数进行在线辨识,建立了以参数在线辨识模型为基础的磁链控制器,实现了对大功率开关磁阻电机的可逆运行控制。三相12/8极100 kW开关磁阻电机的实验结果证实了参数在线辨识算法对于磁链的估算误差小于3%,并且在开关频率10 kHz的条件下,理想方波电流给定下误差小于5%。采用参数在线辨识模型的大功率开关磁阻电机调速系统在煤矿生产现场的运行结果证实了方案的可行性和有效性。

In order to reduce adverse effect in motor performance caused by model parameters changes of switched reluctance motor（ SRM）, recursive least squares（RLS） method was proposed to identify model parameters on-line, then flux controller based on on-line identification model was estabilished, and finally high-power SRM reversible control was realized. The experimental results of three-phase （12/8 polar） 100 kW SRM indicated that this method error of flux linkage is less than 3%, and error of ideal square current is less than 5% based on 10 kHz switch frequency. High-power switched reluctance drive（SRD） applied in mine production field confirmed its validity and feasibility.