Control system for improving power factor of wound-rotor asynchronous motor

• Main Authors: YAO LEIBO, JI XUANDE, DUAN XIAOMING, DUAN CHUNXIA, GUO LONGGANG
• Format: Patent
• Language: Chinese; English
• Published: 26.11.2019
• Subjects: CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORSOR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER; ELECTRICITY; GENERATION

The utility model relates to a control system for improving a power factor of a wound-rotor asynchronous motor. The control system comprises a KM1 contactor, a KM2 contactor, an RST starting resistor,a boosting transformer, an adjustable capacitor, a rotor rotating speed measuring circuit, a CPU controller, a driver and an actuator. Wherein the rotor rotating speed measuring circuit is respectively connected with the winding type asynchronous motor and the CPU controller, the driver is respectively connected with the CPU controller and the actuator, and the actuator is connected with the adjustable capacitors on the secondary sides of the a-phase boosting transformer, the b-phase boosting transformer and the c-phase boosting transformer; the primary sides of the a-phase boosting transformer, the b-phase boosting transformer and the c-phase boosting transformer are connected with a KM2 contactor, and the KM1 contactor is connected with an a-phase starting resistor, a b-phase starting resistor and a c-phase sta