汽车用42V钕铁硼永磁发电机稳压分析.pdf

学兔兔 汽 车 工 程 2011年(第33卷)第11期 Automotive Engineering 2011(Vo1．33)No．11 2011203 汽车用42V钕铁硼永磁发电机稳压分析术 张学义，史立伟 (山东理工大学交通与车辆工程学院，淄博 255049) [摘要] 在汽车42V发电机中采用钕铁硼永磁转子。阐述了该永磁发电机的稳压原理，分析了其电枢反应电 抗、绕组漏抗和负载端压与发电机转速的关系。研制出了集稳压、整流于一体和由基准电路、比较电路、触发电路和 整流电路集成的五相半控桥式整流稳压器，解决了汽车用42V永磁发电机在宽转速、宽负载范围内输出电压不稳定 的问题。 关键词：汽车；钕铁硼永磁；发电机；稳压分析 An Analysis．on the Voltage Stability of 42 V Automotive Generator ’ with Nd—Fe—B Permanent—magnet Rotor Zhang Xueyi Shi Liwei School of Transportation and Vehicle Engineering，Shandong University of Technology，Zibo 255049 [Abstract] Nd—Fe-B permanent-magnet rotor is used in a 42V automotive generator．The theory of voltage stability for the permanent—magnet rotor generator is expounded with the relation of armature—reaction reactance， winding leakage reactance and load terminal vohage versus generator speed analyzed．A voltage stabilizer with five— phase semi-control bridge rectification is developed，which integrates the functions of voltage stabilization and cur— rent rectification and is composed of reference circuit，comparator circuit，trigger circuit and rectifier circuit．With the voltage stabilizer，the problem of output voltage instability in 42V permanent—magnet generator at wide ranges of speed and load of vehicle is solved． Keywords：vehicles；Nd-Fe-B permanent-magnet；generator；voltage stability analysis 集稳压、整流于一体，适合于汽车使用的42V稀土永 日Ij百 磁稳压发电机十分必要。