Motor control circuit

• Main Authors: PANG GUOZHONG, MO XUMING, RUAN WEILI, ZOU ZHONGZHANG
• Format: Patent
• Language: Chinese; English
• Published: 08.05.2018
• 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; EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS; GENERATION

The utility model relates to a novel motor control circuit who uses among motor control circuit, the especially electric machine control box. This circuit includes overload or under -voltage protection module that input and 380V three phase current are connected, overload or under -voltage protection module's output connect the converter, the converter connect the motor, overload or under -voltageprotection module still be connected with earlier on the switching power supply module that the converter sent control signal's frequency -variable controller and provided the power to frequency -variable controller. The utility model discloses a motor control circuit is guaranteeing under the single scene in the operation of motor safety and stability, can adjust the output frequence of converter through frequency -variable controller for when connecting the motor of different specifications under the use scene of difference, need not to change the circuit, can adjusting output parameter through frequency -variable