Drive control method and device of final dusting high-voltage motor of steel mill

• Main Authors: CHEN MING, WANG MINGJING, DENG ZIHUI, LEI MING, HAN JUN, WANG LIANGBIN, LI BIN, CAI YING, ZHAO XIAOBIN
• Format: Patent
• Language: English
• Published: 28.01.2015
• 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 drive control method and device of a final dusting high-voltage motor of a steel mill. When a frequency converter serves as main drive, an outgoing line of the frequency converter is connected with an inlet line of the motor, and a secondary line of the motor is in short connection in the working process. When the motor breaks down, the outgoing line of the frequency converter and the inlet line of the motor are disconnected, the power frequency is connected to the inlet line of the motor, the secondary line of the motor is connected with a water resistance cabinet, the resistance value of the water resistance is reduced through a pole plate of the water resistance cabinet, the running speed of the motor is increased, and when the running speed of the motor reaches the full gear, the secondary line of the motor is separated from the water resistance cabinet, and the secondary line of the motor is in short connection. The frequency converter is used for driving the final dusting high-voltage motor, the running speed of the final dusting high-voltage motor can be adjusted, the purpose of saving electric energy is achieved, and when the frequency converter serves as the main drive, the water resistance standby drive is added, and it is guaranteed that when the main drive breaks down, the high-voltage motor can normally run.