Control system and control method for power factor improvement of wound-type asynchronous motor

• Main Authors: YAO LEIBO, JI XUANDE, DUAN XIAOMING, DUAN CHUNXIA, WU CHAO, GUO LONGGANG, HE YONG
• Format: Patent
• Language: Chinese; English
• Published: 14.06.2019
• 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 invention relates to a control system and control method for power factor improvement of a wound-type asynchronous motor. The control system comprises a KM1 contactor, a KM2 contactor, R startresistors, boosting transformers, adjustable capacitors, a rotor speed measuring circuit, a CPU controller, a driver and an actuator, wherein the rotor speed measuring circuit is respectively connected with the wound-type asynchronous motor and the CPU controller, the driver is respectively connected with the CPU controller and the actuator, the actuator is connected with the a-phase boosting transformer secondary-side adjustable capacitor, the b-phase boosting transformer secondary-side adjustable capacitor and the c-phase boosting transformer secondary-side adjustable capacitor, the a-phaseboosting transformer primary side, the b-phase boosting transformer primary side and the c-phase boosting transformer primary side are all connected with the KM2 contactor, and the KM1 contactor is connected with the a-phase, b-p