同步电机的MATLAB仿真平台及其定量分析与模型构建

Synchronous machines have traditionally been limited to constant speed operation, but with the advancements in power electronics and variable frequency drives, they have now become a member of the variable speed drive family. This paper focuses on a representative salient-pole synchronous machine, and presents a quantitative analysis of the interrelationship between its internal currents, voltages, flux, linkage, and torque, while simplifying the model by neglecting factors that have minimal impact on the error but significantly increase the algorithm complexity, such as harmonic magnetomotive force. A mathematical model based on abc three-phase variables is established and transformed into a d/q coordinate model for easy computer control using Park's transformation. The simulation of the system is implemented using SIMULINK, a tool within MATLAB specifically designed for simulating and analyzing dynamic systems. The system is divided into four main parts: power supply, abc/dq converter, internal machine simulation, and control feedback, with dedicated modules designed for each part and a series of parameters configured. Upon initiation of the simulation, after the initial oscillations, the responses of the various outputs stabilize relative to the output time. Keywords: Synchronous machine, d/q model, MATLAB, SIMULINK, simulation. This study serves as a valuable resource for the design and analysis of synchronous machines using MATLAB for simulation and modeling, and can guide the development of control systems for practical applications.