三相写极同步电机的建模与仿真

Modeling and Simulation of Three-Phase Written-Pole Synchronous Motors

永磁同步电机在动力系统中占有重要地位,由于永磁电机的极对数固定不变,启动和同步运行时受到电压、电流、频率等条件的限制,很难满足不同工况需求。三相写极同步电机是一种特殊的永磁同步电机,永磁体可以变极对数运行。根据三相写极同步电机的启动、变极和牵入同步运行特性,建立了三相写极同步电机d/q数学模型。总结运行仿真结果,并与普通永磁同步电机进行对比,验证了三相写极同步电机具备启动转矩大、同步运行速度宽及牵入同步运行速度快的特点。

Permanent magnet synchronous motor occupies an important position in the power system, however,due to its ?xed polar logarithm as well as the limitation of its starting and synchronous operation by voltage, current,frequency and other conditions, it is difficult to meet different operating conditions. The three-phase written-pole synchronous motor is a special type of permanent magnet synchronous motor with permanent magnet to operate with variable polar logarithm. Based on the characteristics of three-phase written pole synchronous motor starting,synchronous operation and pole-changing operation, a d/q mathematical model can thus be established. The simulation results are summarized and compared with the common permanent magnet synchronous motor, thus verifying such characteristics of large starting torque, wide synchronous speed and fast pull-in synchronous running speed as embodied by the three-phase written-pole synchronous motor.