Yawing system of wind turbine generator

A yawing system of a wind turbine generator relates to the field of yawing, solves the problem of large damage to components caused by yawing start and stop, and is characterized in that a mains supply three-phase power supply, a motor brake power supply air switch and a motor brake are connected in sequence; the mains supply three-phase power supply, the power supply main switch and a motor powersupply input interface of the soft starter are connected in sequence; the soft starter bypass contactor is connected with the soft starter; a motor interface of the soft starter, an alternating current contactor, a motor switch and a motor are connected in sequence; a first motor current-limiting protection interface and a second motor current-limiting protection interface of the soft starter areconnected to a PLC yaw current-limiting protection end. An input enable interface of the voltage stabilizing device is connected to a PLC yaw enable line; the output enable interface of the voltage stabilizer is connected to