A method and device for multi-mode start-up switching teaching and skill training of electric motors

Abstract

A method for teaching and skill training of multi-mode starting and switching of electric motors, comprising the following steps: 1) setting AC contactors respectively connected to the direct starting circuit, the star-delta step-down starting circuit, the soft starting circuit, and the variable frequency starting circuit on the main circuit, The control loop is provided with operation buttons for respectively controlling the pull-in or disconnection of the above-mentioned AC contactor coil; 2) through the three-phase combination meter installed on the main loop and the additional torque sensor on the motor, respectively collect the voltage during the motor start-up process, Current, output torque, and rotational speed; 3) Send the four parameters of voltage, current, output torque, and rotational speed to the PLC connected with the three-phase combination meter and torque sensor, and then send them to the touch screen terminal MT for display. The device includes a motor, a main circuit, a star-delta step-down starting circuit, a soft starter RQD, a frequency converter AFP, a control circuit and a PLC. Realize the actual start-up operation status by controlling the motor action, and assist multi-mode start-up switching teaching and skill training.

Description

technical field [0001] The invention relates to the field of metallurgical construction vocational education and training, in particular to a teaching and skill training method and device for multi-mode starting and switching of electric motors. Background technique [0002] There are many kinds of motor starting methods in the metallurgical industry, and the system control principle is complex. In order to ensure the safe and stable operation of the motor, the commissioning personnel need to understand the advantages and disadvantages of the various starting methods of the motor, the working principle and the type of device fault protection. In traditional training methods, most of them use oral teaching and written knowledge learning. The various teaching, training and assessment links of the motor starting device are not effectively integrated, not comprehensive enough, and lack of practical links. There are few equipment opportunities for this kind of starting device tes...

AI Technical Summary

Problems solved by technology

In traditional training methods, most of them use oral teaching and written knowledge learning. The various teaching, training and assessment links of the motor starting device are not effectively integrated, not comprehensive enough, and lack of practical links. There are few equipment opportunities for this kind of starting device test, and there is a certain gap with the actual site, which affects the quality of teaching or training, fails to achieve the purpose of actual training and on-the-job operation, and does not have feasibility and versatility

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