无轴承开关磁阻电机绕组电流超前角计算方法  

Advanced Angle Calculating Method for Winding Currents in Bearingless Switched Reluctance Motor

作　　者：杨钢[1] 邓智泉[1] 曹鑫[1] 罗建震[1] 王晓琳[1] 

机构地区：[1]南京航空航天大学航空电源航空科技重点实验室,南京210016

出　　处：《南京航空航天大学学报》2009年第2期159-164,共6页Journal of Nanjing University of Aeronautics & Astronautics

基　　金：教育部博士点科研基金(20060287010)资助项目;航空基础科学基金(05F52040)资助项目;新世纪优秀人才支持计划资助项目;南京航空航天大学博士学位论文创新与创优基金(BCXJ05-04)资助项目

摘　　要：无轴承开关磁阻电机是一个复杂的非线性强耦合系统。控制的关键在于根据给定的悬浮力和转矩得到所需要的绕组电流和超前角。在无轴承开关磁阻电机数学模型的基础上,针对现有文献中超前角和绕组电流计算流程的不足,进行了改进。改进后的计算方法避免了在超前角求解过程中,计算流程的中断。改进算法首先对给定的悬浮力和转矩是否能够同时满足进行了判断。当不能同时满足给定的悬浮力和转矩时,给出了一种计算超前角和绕组电流的算法;当能够同时满足给定的悬浮力和转矩时,超前角和绕组电流由判别式计算,改进算法使计算出的超前角能够位于有效区间内。此外,针对计算出的绕组电流有可能超过限值的情况,对算法进行了补充。采用改进算法后,在实验样机上进行了实验验证,实现了样机的稳定悬浮。A bearingless switched reluctance motor （BSRM） is a complicated, nonhnear ana strongly coupled system. In BSRM the key of a control system is to calculate the advanced angle and winding currents according to the needed radial force and the torque. This paper improves the previous method for calculating the advanced angle and winding currents based on mathematical models of BSRM. The improved method avoids an interrupt of the calculating flow of the advanced angle. Firstly, the improved method judges whether the needed radial force and the torque can be simultaneously satisfied. The method for calculating the advanced angle is given when the needed radial force and the torque are unsatisfied. While the radial force and the torque can be obtained at the same time, the advanced angle and winding currents are calculated by the discriminate. The advanced angle calculated by the improved method locates on the effective interval. Moreover, considering the influences of the limit value of winding currents, experiments are fulfilled by the improved method. Experimental results confirm that the stable operation of BSRM can be realized.

关 键 词：开关磁阻电机 无轴承 超前角 电流 

分 类 号：TM301[电气工程—电机]