双馈电机矢量控制变频调速系统控制策略的研究及仿真

Study and Simulation of Vector Control Strategy for Variable-Frequency Variable-Speed Doubly Fed Machines

采用定子磁链定向的矢量控制方式,对双馈电机建立数学模型并提出控制策略。通过调节转子绕组的三相电流、电压矢量,电机转速可以在一定范围内在亚同步和超同步之间平滑调速,同时无功可以独立控制。计算机仿真结果表明该控制策略是可行和有效的。

Based on the stator-flux-oriented vector control method, this paper presents the mathematic model and control strategy of the doubly fed machines. By manipulating the rotor current vector and voltage vector, the rotation speed of machine is adjustable from sub-synchronous speed to super-synchronous speed in correspond scope. And the reactive power is adjustable too. The computer based simulation results prove that the control strategy is executable.