Multi-transmission load balancing control system

Abstract

The invention is applicable to the field of electrical control, and provides a multi-transmission load balancing control system. The system comprises a master frequency converter, a plurality of slave frequency converter, a PLC controller, a CU320 control unit and a plurality of motors, the PLC controller controls the communication with the CU320 control unit, and the master and the slave frequency converters communicate with the CU320 control unit and the corresponding motors, wherein the CU320 receives a speed set value sent by the PLC controller and sends the value to the master frequency converter through a Drive-Cliq network, and the master frequency converter calculates a torque set value according to the speed set value and sends the torque set value to the CU320 control unit through the Drive-Cliq network; and the CU320 control unit controls the corresponding motors according to the speed set value and the torque set value. According to the multi-transmission load balancing control system provided by the embodiment of the invention, the load balancing is realized by the CU320 control unit, the execution cycle is a 1ms level, thus the implementation cycle is greatly shortened, the control times within a unit time are increased, and thus the control precision is improved.

Description

technical field [0001] The invention belongs to the field of load balance control, in particular to a multi-drive load balance control system. Background technique [0002] The coke quenching vehicle in the coking plant weighs several hundred tons when fully loaded. Due to the requirements of the process and the limitation of the capacity of the frequency converter, it is necessary to adopt a scheme in which the equipment is driven by multiple motors to work together. When the vehicle is moving, each driving wheel of the vehicle The load of each wheel cannot be the same, and the load of each wheel is very different. If there are no certain measures to eliminate them, the transmission will be damaged in a short time. In this case, it is necessary to ensure the load balance among the driving motors, ensure the same operating speed, and the average distribution of torque, and realize the required speed and torque distribution control when two or more driving motors work togethe...

AI Technical Summary

Problems solved by technology

[0004] The embodiment of the present invention provides a multi-drive load balancing control system, which aims to solve the problem that the existing inverters that implement load balancing based on PLC programs have a long execution cycle, resulting in reduced control accuracy.

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