Wiring error checking equipment and method for power electronic teaching experiment table

Abstract

The invention provides a wiring error checking device and method for a power electronic teaching experiment table, and the device comprises a + 15V switching power supply, a plurality of main circuit wiring error checking modules and a plurality of control circuit wiring error checking modules, and each main circuit wiring error checking module comprises an isolation transformer, a triode, two resistors and a light-emitting diode. A terminal of the detection circuit is connected with ports of two main circuits needing to be detected; compared with the main circuit wiring error checking module, the control circuit checking module is not provided with an isolation transformer, and terminals of the control circuit checking module are connected with two ports of a control circuit to be checked; during inspection, wiring is wrong when the light-emitting diodes are on, and wiring is correct when the light-emitting diodes are not on. According to the equipment and the method, which circuits in the power electronic circuit have connection errors can be displayed through on-off of the light-emitting diodes, so that the circuit is prevented from being burnt by electrifying, the wiring accuracy is improved, the experiment efficiency can be improved, and the teaching time can be reasonably arranged.

Description

technical field [0001] The invention belongs to the field of power electronic technology course teaching experimental equipment, and in particular relates to a wiring error checking device and method for a power electronic teaching experimental bench. Background technique [0002] The power electronics technology course is a professional basic course for electrical engineering students. It mainly studies electric energy conversion and control technology. Its core content is AC-DC converter technology, DC-AC converter technology, DC-DC converter technology and AC - AC converter technology. The course mainly completes the following power conversion circuits: (1) DC-DC converter circuit implementation and characteristic analysis, mainly including Boost, Buck, Buck-Boost circuits; (2) AC-DC converter circuit implementation and characteristic analysis, including PWM rectifier circuit; (3) DC-AC converter circuit implementation and characteristic analysis, including the realizati...

AI Technical Summary

Problems solved by technology

When students do experiments on the power electronics experiment bench, they often connect the lines incorrectly, which will cause the circuit or device to be burned after power on, making the experiment impossible. Usually, before the students complete the wiring and close the power switch, the teacher will Check whether the wiring of the students is correct to prevent the burning of the experimental bench due to wrong wiring. However, when there are many students and experimental benches doing experiments, the teacher has a lot of work to check the wiring of each experiment one by one, which is time-consuming and labor-intensive. , the efficiency is low, and wiring errors cannot be effectively avoided in the case of limited personnel, so providing a device that automatically checks whether the wiring is correct can liberate teachers, improve classroom efficiency, avoid wiring errors, and protect the test bench

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