变速恒频双馈潮流发电机励磁控制技术

The excitation control technique for VSCF tidal generator based on doubly-fed motor

基于双馈电机的潮流发电系统是通过调节转子绕组中励磁电流的频率、幅值、相位和相序来实现变速恒频(VSCF)控制的.在分析双馈电机的工作原理和数学模型的基础上,设计了基于定子磁场定向控制的变速恒频双馈潮流发电机的励磁控制系统.在Matlab/Simulink环境中进行了仿真研究,结果表明,采用定子磁场定向控制可实现双馈潮流发电系统定子端口有功功率和无功功率的解耦控制.

In the tidal power generation system based on doubly-fed motor, the frequency, amplitude, phase and phase sequence of exciting current in the rotor winding are adjusted to achieve the variable speed constant frequency （VSCF） control strategy. In this paper, following an analysis to the operational principle and mathematical model of the doubly-fed motor, the excitation control system based on the oriented control technology of stator magnetic field of VSCF doubly-fed tidal generator is designed. Simulation research was conducted in the Matlab/Simulink environment. Simulation results revealed that the decoupling control strategy for active and reactive power of the stator port can be achieved by adopting the oriented control strategy of stator magnetic field.