可控整流缩短连续极永磁发电机电压恢复时间  

Method of controllable rectification to shorten voltage recovery time of consequent-pole permanent magnet generator

作　　者：梁学修[1] 许家群[2] 蒋杰 赵博[1] 孙荣毅 

机构地区：[1]中国农业机械化科学研究院土壤-植物-机器系统技术国家重点实验室,北京100083 [2]北京工业大学信息学部,北京100124 [3]国机智能科技有限公司,北京100083

出　　处：《农业工程学报》2016年第22期200-206,共7页Transactions of the Chinese Society of Agricultural Engineering

基　　金："十二五"国家科技支撑计划项目(2015BAF32B02)

摘　　要：连续极永磁型无刷直流发电机是具有梯形波电动势的混合励磁发电机。为了缩短电压恢复时间,该文提出可控整流方法,利用电机电枢绕组实现能量快速存储与释放,通过提高电枢绕组电动势加快电压恢复速度,并且不会增加硬件成本。采用状态空间平均法分析了超级电容储能的可控整流系统电压调节过程,完成了可控整流与二极管整流方式下电压恢复时间的理论计算和试验。试验结果表明:与二极管整流相比,可控整流能将电压恢复时间减少约一半。该研究对提高车载敏感电子设备工作的可靠性提供了参考。To realize the function of automotive engine stop-start, it is promising that traditional independent starter and generator in automobile are replaced by the integrated starter/generator （ISG）, which contributes to energy conservation and emission reduction. Hybrid excitation starter/generator is a potential selection for the ISG, which has high efficiency over extensive working range, high power density, low maintenance, and high reliability without brushes. The consequent-pole permanent magnet （CPPM） brushless direct-current generator （BLDCG） electromotive force （EMF） is designed to the trapezoidal wave. The trapezoidal wave electromotive force CPPM motor is different from the existing sine wave electromotive force CPPM motor. It has the advantages of high power density, small direct-current （DC） voltage harmonic ripple, only requiring low cost and low resolution Holzer position sensor, simple control and other advantages. The CPPM motor can output stable voltage in the wide speed range. However, the normal brushless DC generator needs to match the complex power converter. Therefore, The CPPM motor is a new type of motor used for electric vehicle. This kind of motor has a good prospect in the application of the ISG of automobile. Generally, the excitation current regulation combined with diode rectification is adopted to meet the requirement of alternator technical specification. However, the large time constant of about 100 ms in excitation winding will cause DC-link voltage drop and lead to abnormal operation of automotive sensitive device, such as engine control unit, and radio. In generating mode, the CPPM BLDCG can be seen as hybrid excitation brushless DC generator. In view of relatively low time constant in armature winding of CPPM BLDCG, it is possible to improve DC-link voltage dynamic performance by regulating armature winding current. This paper takes CPPM BLDCG of 14 V as the research object and aims to shorten the time of voltage recovery. With the method of controlled rectifica

关 键 词：发电机 电压控制 试验 连续极永磁 无刷直流发电机 电压恢复时间 整流 

分 类 号：TM351[电气工程—电机]