摘要
双馈电机能够四象限运行,且可在转子侧变频控制,降低了变频器容量。提出了采用双馈电机能量回馈系统模拟四象限负载螺旋桨在不同工况下的稳态和动态特性,通过改变转子电压幅值和相位,不但可以调节双馈电机的输入转矩,而且可以产生变压恒频的交流电并反馈到电网,实现能量回馈。采用定子磁链定向的矢量控制策略,利用MATLAB/Simulink建立双馈电机模型和控制系统模型。仿真结果表明,双馈电机能在四象限内较好地模拟螺旋桨负载的机械特性。
The doubly-fed induction motor can run in four quadrants, in sub-synchronous and super-synchronous speed range operation. Meanwhile, By the rotor side control of doubly-fed motor, the capability of converter can be decreased largely. In this paper, a new doubly-fed machine load system is presented to simulate the stable and dynamical properties of marine propeller operating in different conditions. By changing the magnitude and phase of the rotor voltage, the input torque of the doubly-fed machine can be adjusted, furthermore, it can generate power in the mode of variable-voltage variable frequency, and then the energy can feed back to the power network. Under the vector control strategy of stator field-orient, a vector control model is founded by using the software of MATLAB/Simulink. The results show that the doubly-fed machine can simulate the propeller torque features perfectly in four quadrants.
出处
《电机与控制应用》
北大核心
2006年第6期28-31,共4页
Electric machines & control application
关键词
双馈电机
矢量控制
螺旋桨
负载模拟
doubly-fed motor
vector control
propeller
load simulation
