Power electronic technology teaching experiment instrument

Abstract

The invention relates to a power electronic technology teaching experiment instrument. The power electronic technology teaching experiment instrument comprises an AC-DC conversion circuit which is used for converting 220V AC commercial power into 36V DC, a DC-AC inverter circuit which is used for inverting the 36V direct current output by the AC-DC conversion circuit into 36V alternating current and providing the 36V alternating current to the silicon controlled rectifier and load circuit, a 12V and 5V conversion circuit which is used for converting 36V direct current output by the AC-DC conversion circuit into 12V direct current and 5V direct current and providing the 12V direct current and the 5V direct current for the single chip microcomputer and the driving circuit, a single-chip microcomputer and drive circuit which is used for controlling the size of a silicon controlled rectifier conduction angle in the silicon controlled rectifier and load circuit during the thyristor rectification circuit experiment, and a key display screen which is used for adjusting and displaying the silicon controlled rectifier and the conduction angle of the silicon controlled rectifier in the loadcircuit. The power electronic technology teaching experiment instrument provides safe alternating-current working voltage for a silicon controlled rectifier and a load circuit; in addition, the trigger circuit controlled by the single-chip microcomputer and having the control angle display function is adopted, and a key mode is adopted for trigger angle control, and liquid crystal display is adopted for angle display, and control angle adjustment is convenient and visual.

Description

technical field [0001] The invention relates to power electronics teaching equipment, in particular to a power electronics teaching experiment instrument. Background technique [0002] At present, the power electronics experimental equipment used in domestic university laboratories is mostly in the form of large-scale combined experimental benches, such as the products of Tianhuang Jiaoyi, Zhejiang University Qiushi and other companies. The price is relatively expensive, and the voltage is 380 volts. Dangerous, the power consumption is large and the work is not very stable. It is inconvenient to adjust the control angle of the thyristor during the experiment, and it is also inconvenient to observe. Contents of the invention [0003] The technical problem to be solved by the present invention is to provide a teaching experiment instrument for power electronics technology, which can improve the safety of experiment operation, save energy, be stable, and facilitate control an...

AI Technical Summary

Problems solved by technology

[0002] At present, the power electronics experimental equipment used in domestic university laboratories is mostly in the form of large-scale combined experimental benches, such as the products of Tianhuang Jiaoyi, Zhejiang University Qiushi and other companies. The price is relatively expensive, and the voltage is 380 volts. Dangerous, high power consumption and unstable work, it is inconvenient to adjust the control angle of the thyristor during the experiment, and it is also inconvenient to observe

Images