A three-phase variable flow experimental control device and an experimental control method thereof

Abstract

The invention discloses a three-phase change flow experiment control device and an experiment control method thereof, the experiment control device comprises a three-phase isolation unit, three-phaseprotection unit, Electrical Signal Sampling Protection Unit, three-phase drive unit, Central control unit, electrical signal sampling unit, capacitance filter unit, a man-machine interaction unit anda DC load unit, one end of the three-phase isolation unit is connected to the three-phase power grid side, the other end of the three-phase isolation unit is connected with the three-phase drive unitthrough an AC relay switch and a bus bar, the three-phase driving unit is connected with a capacitive filter unit. The capacitive filter unit is connected with the DC load unit through a DC relay switch and a bus bar, and the inputs of the electric signal sampling unit are respectively connected with the bus bar between the three-phase isolation unit and the three-phase driving unit and the bus bar between the capacitive filter unit and the DC load unit, and the inputs of the electric signal sampling unit are connected with the bus bar between the three-phase isolation unit and the three-phasedriving unit. The invention can simultaneously collect three-phase alternating current voltage and direct current voltage, and realizes mutual conversion between three-phase alternating current and direct current.

Description

technical field [0001] The invention belongs to the technical field of three-phase variable current voltage measurement and control, and in particular relates to a three-phase variable current experimental control device and an experimental control method thereof. Background technique [0002] At present, the commonly used three-phase converter test device usually only includes a full-bridge working circuit composed of an IGBT, and the user needs to separately select peripheral test devices such as voltage regulators, isolation transformers, working inductors, filter capacitors, and control chips. And users are required to use cables to connect all test devices. This requires users to have high professional knowledge and application experience and spend extra time and energy to select suitable test accessories. And there are the following problems: it is difficult for users to choose unmatched test accessories to obtain test results, and unmatched experimental accessories h...

AI Technical Summary

Problems solved by technology

[0002] At present, the commonly used three-phase converter test device usually only includes a full-bridge working circuit composed of an IGBT, and the user needs to separately select peripheral test devices such as voltage regulators, isolation transformers, working inductors, filter capacitors, and control chips.

And requires the user to use cables to connect all test devices

This requires users to have high professional knowledge and application experience and spend extra time and effort to select the appropriate test accessories

And there are the following problems: it is difficult for users to choose unmatched test accessories to obtain test results, and unmatched experimental accessories have potential safety hazards. Unmatched test accessories take up a lot of space and are not convenient to move. Therefore, it is difficult to ensure the connection of optional accessories safety and reliability

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