双馈同步电机的功率流分析和效率优化

描述了双馈同步电机(DFSM)的基本方程式，提出了其定子端、转子端和电机轴之间发生机电能量转换的基本关系。重点研究了不同转差率下双馈同步电机在发电、电动和电磁制动三种工况下的稳定区域、功率流及其高效区域。试验结果表明其功率流分析和效率优化是正确的，为双馈同步电机的工程设计提供了理论依据。

Power Flow Analysis and Efficiency Optimization of Doubly Fed Synchronous Machine

The energy balances of the doubly fed synchronous machine (DFSM) was described. The proposed method is based on the principle which considers that the electro-mechanical conversion takes place between the stator circuits and the machine shaft, so that the electrical power applied to rotor circuits is taken as a command. From this point of view, the focus of the study are the stable regions,the power flows and the high efficiency areas of the DFSM for different slip under generating,motoring and braking conditions. The experiment results show that the power flow analysis and efficiency optimizations of a DFSM are reasonable. It provides the theoretical foundation for the design of DFSM.