【摘要】 使用时步有限元法,分析了无刷双凸极直流发电机的静态参数和运行特性,在考虑铁心磁路非线性饱和、边缘磁场、集中式电枢绕组电枢反应的3个因素影响前提下,直接求解电机的运行性能,为该新型无刷直流发电机的优化设计提供有益的参考和依据。重点介绍电励磁双凸极直流发电机的结构、拓扑特点,建立了该电机的数学模型,通过时步有限元法直接仿真,比较4种典型三相结构的外特性,并以72/48结构多单元三相电励磁双凸极直流风力发电机为算例,仿真分析了不同负载大小电机的运行特性。更多还原

【Abstract】 Using transient finite element method to analyze this Brushless DC generator’s static parameters and operation performance in order that the performance under real load can be solved directly including nonlinear saturation of core materials,fringing magnetic field,armature reaction of lumped windings.Emphasis introduces the structure and topology features of wound-field doubly salient DC generator,then the mathematic model of this generator is built up,which lies in extraction of static parameters such as winding inductance,coupled inductance.Also,a 72/48 multi-cell three-phase wound field doubly salient DC generator is simulated to analyze the operating characteristics of different load generators,and provided a beneficial reference for the machine designer.更多还原