同步电机双功能系统单相交流励磁的研究

提出了一种新的无刷交流同步电机双功能系统电动状态励磁方案。即采用励磁机单相交流励磁的方案。分析了该励磁方案的基本工作原理，推导了励磁机转子电枢绕组中产生的感应电势的计算公式，理论证明是正确的。进行了单相交流励磁和直流励磁的对比实验以及静止状态下的仿真和实验，结果表明从静止状态到额定转速，单相交流励磁方案都能够给主电动机提供励磁。理论、仿真和实验具有一致性，比较其它可能的方案，简单可靠。

Research on Single-Phase AC Excitation of Bifunctional Synchronous AC Motors

Excitation of the main motor at rest is a guarantee in achieving the bifunctional brushless synchronous machine. This article puts forward a single-phase AC excitation project of electromotor state about bifunctional synchronous AC machine. It analyzes the theory of this project and educed the expressions of faradism in armature of excitation motor. Simulations and contrastive experiments between DC excitation and single-phase AC excitation are made. The results make know that the project of the single-phase AC excitation can offer excitation from the rest state to the rated speed. The theory and the results of the simulations and experiments are coincident.