浮式发电平台用直线振荡电机的设计与研究  

Design and Research on a Linear Oscillation Machine for Floating Power Generation Platform

作　　者：张静[1] 常臻 范舒羽 ZHANG Jing;CHANG Zhen;FAN Shu-yu(Jinling Institute of Technology,Nanjing 211169,China;Yancheng Institute of Technology,Yancheng 224051,China)

机构地区：[1]金陵科技学院机电工程学院,江苏南京211169 [2]盐城工学院机电工程学院,江苏盐城224051

出　　处：《金陵科技学院学报》2022年第2期53-58,共6页Journal of Jinling Institute of Technology

基　　金：江苏省自然科学基金资助项目(BK20150115)。

摘　　要：设计了一种海上浮式发电平台用单相永磁直线振荡电机,该电机在电动状态时实现平台减振功能,在发电状态时实现平台多能源互补发电。首先,根据波浪载荷、电磁负荷参数建立永磁直线振荡电机模型结构和系统振荡时域微分方程,完成电机参数匹配设计。其次,采用有限元法分析电机在空载时的气隙磁场分布情况;计算电机在电动状态时的振荡位移和振荡频域,分析电磁推力随输入电流的变化特性;研究电机在发电状态时的电动势和输出电能质量情况。最后,通过改变电机动子永磁体环结构,优化电机发电性能。分析结果表明,该电机体积小,功率密度大,适用于漂浮式发电平台减振系统,其设计与优化分析方法适用于同类振荡电机的设计与分析领域。This paper presents a single-phase permanent magnet(PM) linear oscillation machine for power generation floating platform off land. It achieves the function of vibration attenuation when the machine runs as a motor, and it achieves the function of multi-energy complementary power generation when the machine runs as a generator. Firstly, based on wave loading and electromagnetic loading, the structure and parameters of the machine are obtained, and the time domain differential equations of system oscillation are established. Secondly, the air-gap magnetic field distribution of the machine in the condition of no-load is analyzed by finite-element method. The oscillation displacement and oscillation frequency of the machine are calculated as a motor, and electromagnetic thrust with different incoming current is analyzed. Electromotive force(EMF) and the output power quality are illustrated when the machine runs as a generator. At last, the structures of PM ring are optimized to improve the performance of the generator. All the results show the machine has the advantages of small volume and high flux density. It is suitable for floating power generation platform damping system, and the method of design and optimization is suitable for the field of similar oscillating motors.

关 键 词：直线振荡电机 永磁体 电磁场 有限元法 平台减振系统 

分 类 号：TM351[电气工程—电机] TM359.4