PROTECTION CIRCUIT USED IN WIND POWER GENERATION SYSTEM INCLUDING DOUBLE-FED INDUCTION GENERATOR

摘要

There is provided a protection circuit (10) that protects a rotor-side converter (2) connected to a secondary winding of a double-fed induction generator (6) including a diode rectifier (13), connected to the secondary winding, for rectifying an electric power coming through the secondary winding, a resistor (15) for consuming the electric power rectified by the diode rectifier (13), and a switching element (16), connected to the resistor (15) in series, for adjusting the electric power flowing into the resistor (15).