混合励磁水轮发电机效益分析  

The Benefit Analysis of Hybrid Excitation Hydro-generator

作　　者：夏永洪[1,2] 李梦茹[1] 周琳[1] 张聪[1] 辛建波[2] 

机构地区：[1]南昌大学信息工程学院,南昌330031 [2]国网江西省电力公司电力科学研究院,南昌330096

出　　处：《中国农村水利水电》2017年第6期118-121,共4页China Rural Water and Hydropower

基　　金：国家自然科学基金项目(51367013);江西省杰出青年人才计划项目(20162BCB23011);江西省自然科学基金项目(20161BAB206125);江西省重点研发计划项目(20161BBE50054);南昌大学研究生创新专项资金项目(CX2016267)

摘　　要：针对现有小型电励磁水轮同步发电机效率低,而永磁水轮发电机并网困难等问题,提出一种适用于小型水电站的混合励磁水轮发电机。阐述了该混合励磁水轮发电机的基本结构和工作原理,以一台300 k W电励磁水轮发电机为基准,采用磁路法计算了混合励磁水轮发电机各部分磁路的磁密以及主要材料的用量等结果。通过与电励磁水轮发电机进行比较,分析了混合励磁水轮发电机产生的经济效益和环境效益。该混合励磁水轮发电机具有较高的运行效率和较宽的气隙磁场调节能力,完全可以满足并网要求,同时也带来可观的经济和环境效益。A hybrid excitation hydro-generator （HEHG） for small-scale hydropower station is proposed to solve the existing problems such as low efficiency for small electric excitation hydro-generator and grid-connected difficulties for permanent magnet hydro-generator. Basic struc- ture and working principle of the HEHG are expounded. Based on a 300kW electric excitation hydro-generator, the magnetic flux density of each part and the amount of the main material for HEHG are calculated by the magnetic circuit method. The economic benefit and environ- mental benefit of the hybrid excitation generator are analyzed by comparing the electric excitation hydro-generator. The HEHG has high oper- ating efficiency and wide air gap magnetic field regulating ability to meet the requirements of grid connection, while considerable economic and environment benefits are brought about.

关 键 词：小水电 混合励磁 永磁电机 同步发电机 效益分析 

分 类 号：TV742[水利工程—水利水电工程] TM312[电气工程—电机]