After space vector PWM modulation algorithms and implementation methods have been analyzed, dual closed-loop vector control system of asynchronous motor is worked out.

分析了空间矢量pwm的调制算法以及实现方法，最后设计了异步电机的双闭环矢量控制系统。

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DIFG double closed-loop vector control strategy is established; regulating principle and dynamic characteristic in active power control mode or speed control mode is discussed.

建立了双馈发电机双闭环矢量控制系统，研究了功率控制模式和转速控制模式下发电机系统的调节原理和动态特性。

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Then a vector control method with speed closed-loop and magnetic linkage closed loops put forward, which is based on the constant velocity by means of stator flux-oriented vector control.

在基于定子磁场定向的矢量控制恒线速运行控制方案的基础上，提出了一个速度闭环、磁链闭环的矢量控制方案。

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