摘要
开发具有高功率密度的高速永磁同步发电机是风力发电机设计领域的一个重要方向。以一种用于储能风力发电系统的360 k W、7 000 r/min永磁同步风力发电机为例,对高速永磁同步电机的设计进行了分析。在此基础上对设计的电机进行了有限元仿真分析,仿真结果表明该电机电压波形畸变率低,齿槽转矩较小,能满足设计要求。电机高速旋转时,永磁体将受到巨大的离心力。为保护永磁体不受损害,采用了螺钉对永磁体固定并进行碳纤维套绑扎的新转子保护措施。经有限元分析,该措施能对永磁体形成有效保护。在上述研究的基础上,进行了样机的制造和试验,试验结果表明,电磁方案和转子保护措施能够满足设计要求。
Exploiting the high speed permanent magnet wind generator （PMWG） is one of the important aspects in thefield of the PMWG design. In this paper, the detail design of a 360 kW, 7 000 r/min PMWG used in a wind energy storagesystem were introduced and the selection principle of the electromagnetic parameters was discussed. Based on the designscheme, the simulation was conducted. The simulation results show that the THD of the voltage waveform and the coggingtorque are small. The rotor structure of the designed PMWG is surface-mounted, thus the permanent magnet （PM ） has tobe protected from the huge centrifugal force. In order to protect the PM, a novel method that the PM was firstly fixed to therotor core by screws, and then banded with carbon fiber were applied and verified to be effective through the finite elementmethod （FEM ）. The simulation results indicate that the radial deformation and stress are small, which means that the PMwould be protected effectively. Based on the above study, the prototype is manufactured and tested and the experiment resultsshow that the design meets the requirements.
出处
《微特电机》
北大核心
2016年第8期15-18,28,共5页
Small & Special Electrical Machines
基金
国家自然科学基金项目(51577107)
