摘要：高速交流永磁同步发电机，具有高的电磁频率，故电机内部铁心损耗较传统电机要大。为防止电机过热引起永磁体不可逆去磁及电机绝缘层破坏，准确计算铁心损耗至关重要。Bertotti分离铁耗计算模型及非正弦磁场下的Fourier分解模型主要针对低频时效果较好，但随着频率的增加，集肤效应变得明显使得传统铁耗计算模型不再适合。本文针对设计的18槽16极高速永磁电机建立了变损耗系数正交分解模型，通过仿真和实验，证明了此模型的合理性。

关键词：高速永磁发电机；铁心损耗；变损耗系数模型
Abstract: High-speed AC permanent magnet synchronous generator(PMSG) with a high electromagnetic frequency,  so the core loss is bigger than the motor working under normal frequency. In order to prevent the irreversible magnetic loss of permanent magnet and winding electrical insulation damage caused by overheating when PMSG working in poor heat dissipation environment in aircraft, so the accurate calculation of core loss is essential. Bertotti separation computational model of iron losses and the Fourier decomposition of the non-sinusoidal magnetic field model in low frequencies are better, but as the frequency increases, traditional iron loss calculation model is no longer suitable because skin effect becomes obvious. Variable loss-coefficient orthogonal decomposition model was proposed in this paper for the design of the 18 slots and 16 poles high-speed PMSG, it was verified reasonably by simulation and experiment.

Key words: high-speed PMSG；core losses；variable loss-coefficient model