CONTROL METHOD FOR PROTECTING SWITCHING DEVICES IN POWER CONVERTERS IN DOUBLY FED INDUCTION GENERATOR POWER SYSTEMS

摘要

Systems and methods for protecting switching devices in a power converter in doubly fed induction generator power systems are provided. A DFIG system can include a DFIG generator and a power converter comprising a line side converter and a rotor side converter connected by a DC bus. Each of the line side converter and rotor side converter can include a plurality of bridge circuits. Each bridge circuit can include a plurality of switching devices. A method can include monitoring, by a control device, a voltage of the DC bus of the power converter. The method can further include implementing, by the control device, a switching device protection measure based at least in part on the voltage of the DC bus of the power converter. The switching device protection measure can be operable to protect the switching devices by operating the switching devices within a safe operating area.