Feedforward control speed regulation method suitable for load converter inverter drive synchronous motor

The invention discloses a feedforward control speed regulation method suitable for a load converter inverter to drive a synchronous motor, belongs to the field of motor control, and aims to solve theproblem that the dynamic response capability of a control system to a variable load is weak when the load converter inverter is adopted to drive the synchronous motor in the prior art. The method comprises the following steps: observing the load torque TL of the synchronous motor, and feeding kTL forward into a double closed-loop PI control outer loop, wherein k is a feedforward gain coefficient;and observing the load torque TL according to a transfer function. 适用于负载换流逆变器驱动同步电机的前馈控制调速方法，属于电机控制领域，本发明为解决现有采用负载换流逆变器驱动同步电机，控制系统对变化负载的动态响应能力弱的问题。本发明方法为：对同步电机的负载转矩T进行观测，并将kT前馈到双闭环PI控制外环中；k为前馈增益系数；所述负载转矩T按传递函数进行观测。