摘要
文章针对永磁无刷直流电机中常见的绕组故障,将余度技术引入到无刷电机设计中来,设计了双余度永磁无刷直流电机,它采用2种定子绕组方式,包括同槽嵌放和隔槽嵌放2种结构。根据永磁无刷直流电机的电压平衡方程式,推导了2种结构下的双余度永磁无刷直流电机电压、转矩方程。建立了2种双余度无刷直流电机的电磁场模型,设置了2套独立的控制电路,并利用magnet对其进行了电磁场仿真,对比分析了2种结构下的转速、转矩等。文章建立了2种双余度无刷直流电机的磁热耦合分析模型,对其热场进行了仿真,对比分析了2种结构下的温度。仿真结果表明:2种结构的双余度无刷直流电机在运行过程中,具有良好的动态特性,2套绕组并未给电机带来不良后果,但大大提高了系统可靠性。
Sections 1,2 and 3 of the full paper explain our theoretical and simulation research on dual-redundancy BLDCM(brushless DC motor).Their core consists of:(1) section 1 briefs the relevant information about mathematical modeling;(2) according to the winding fault of permanent magnet BLDCM,redundancy technique is brought into the motor design and then two structures of dual-redundancy BLDCM are designed;(3) eqs.(4) and(6) can be used for calculating voltage and torque respectively;(4) the magnetic-thermal coupling analysis model is established;(5) we give simulation results in Figs.3 through 11 and then analyze them.The above-mentioned simulation results and their analysis show preliminarily that:(1) the two structures of the dual-redundancy BLDCM can achieve good dynamic characteristics;(2) the two types of motor windings improve system reliability without bringing bad results.
出处
《西北工业大学学报》
EI
CAS
CSCD
北大核心
2010年第6期921-926,共6页
Journal of Northwestern Polytechnical University
基金
西安市创新支撑计划(YF07042)
09年度西北工业大学科技创新基金资助
关键词
双余度
无刷直流电机
磁热
耦合分析
DC motors
dual-redundancy technique
brushless DC motor(BLDCM)
magnetic-thermal coupling analysis