Large current generating device for calibrating current transformer and its control method

Abstract

The invention discloses a large current generator for current transformer calibration and a control method thereof. The large current generator for current transformer calibration comprises a main ACcontactor, a large current generator, a rectifier and filter circuit, a forward AC contactor, a negative AC contactor, a sampling resistor and a centralized controller. The centralized controller is adopted to realize that the current is continuously adjustable between -1200 A and + 1200 A, -1200 A -+ 1200 A DC signals and reference signals with the accurate current magnitude can be provided for current transformer calibration, and the problem of accurately calculating the remaining capacity of the battery can be better solved.

Description

Technical field The invention relates to a large current generating device for current transformer calibration and a control method thereof, which can be widely used in the field of manufacturing electric vehicle lithium batteries and current transformers. Background technique With economic development and people's increasing requirements for the living environment, energy conservation and emission reduction have become a problem that the industry must face. According to the Global Carbon Emission Survey, the carbon dioxide emitted by automobile exhaust is 24%, second only to emissions from traditional energy processing and reuse. In the automobile industry, the exhaust emissions of traditional fuel vehicles are one of the most important pollution sources. Compared with fuel vehicles with high pollution and high energy consumption, electric vehicles rely on electricity to drive, have low noise, high energy efficiency, and no pollutants. They have obvious advantages in energy s...

AI Technical Summary

Problems solved by technology

In order to solve the deficiencies in the prior art, the present invention provides a large current generating device for current transformer calibration and its control method, which provides -1200A~+1200A forward and reverse DC signals for current sensor calibration, with high accuracy, and further Very good solution to the problem of accurate calculation of battery remaining capacity current

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