Motor variable-frequency drive control method and system

• Main Authors: CHENG ZHENGLIN, ZHANG ZHE, YU TONG, LI JIA, HE YAPING, ZHANG ZHI, HAN ZHICHENG, AO EN, QIN CANHUA, PENG BO, LUO HE, CHEN MENGJUN
• Format: Patent
• Language: Chinese; English
• Published: 18.08.2020
• 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 discloses a motor variable-frequency drive control method. The mehtod comprises the following steps of acquiring the real-time rotating speed of each motor, subtracting the real-time rotating speed from a given rotating speed, inputting the difference into a corresponding speed regulator, and outputting a corresponding rotating speed signal; after amplitude limiting adjustment is conducted on the rotating speed signal through an amplitude limiting controller, outputting a torque given value to a corresponding torque adjuster; meanwhile, obtaining the torque real-time values of all the motors; and using the torque regulator to perform the torque closed-loop control on the motor according to the torque given value and the torque real-time value. The invention further disclosesa motor variable-frequency drive control system which comprises a processor and a memorizer, a computer program is stored in the memorizer, and the control method is achieved when the program is executed by the processor. The