直驱永磁风力发电机空载短路去磁分析

摘要

Used the finite element Maxwell electromagnetic field analysis software to establish two-dimensional transient electromagnetism analysis computation model on a direct-drive wind turbine PM generator. Used ansoft powerful function and post-processing, simulated and obtained the distribution of magnet field and performance curve at the no-load short circuit. The magnetic field distribution of the permanent magnet at the most serious position of demagnetization was analyzed under the condition of sudden short circuit of generator. The work had good reference value to direct the production optimization design.%利用Maxwell电磁场有限元计算软件,建立了基于Ansoft的直驱永磁风力发电机二维瞬态有限元模型,利用Ansoft强大的电磁场分析和后处理功能,仿真得到了直驱永磁风力发电机在正常和空载短路下的电磁场分布和相关性能曲线,分析了空载短路下短路电流对永磁体的去磁磁场,为直驱永磁风力发电机优化设计提供判断依据.