Energy-storage system-based self-starting control method for double-fed induction generator

The invention discloses an energy-storage system-based self-starting control method for a double-fed induction generator. The control method particularly comprises the steps as follows: (1) when a power network is in a low-voltage fault, a self-starting controller of the double-fed induction generator cuts off a network side load; an energy-storage system is merged into two ends of a direct-current capacitor; the energy-storage system charges the direct-current capacitor; and the control system adopts a PV voltage control strategy; (2) after network side voltage reaches the control range of rated voltage, a system load is connected; meanwhile, a frequency controller is started; the self-starting frequency of the generator is further controlled to ensure that the frequency of the system is stabilized within the rated frequency; and (3) after the controller detects stable frequency and voltage of the system, the system stably runs, cuts off the energy storage system, and is converted into a PQ power control mode to stably run; and the self-starting process of the generator is ended. Under the direct-current voltage support of the energy storage system, self-starting and running with the load of the generator are achieved; and stable voltage and frequency are ensured.