AC-AC converter

Abstract

The invention discloses an AC-AC converter which comprises a first voltage conversion device of which the first end is connected with a first AC system, a second voltage conversion device and a frequency conversion device, wherein the first end of the second voltage conversion device is connected with a second AC system; the frequency conversion device is respectively connected with the second end of the first voltage conversion device and the second end of the second voltage conversion device; the transformation ratio of the first voltage conversion device is determined according to the capacity of the frequency conversion device, the maximum through-current capability of the device and the voltage of the first AC system; and the transformation ratio of the second voltage conversion device is determined according to the capacity of the frequency conversion device, the maximum through-current capability of the device and the voltage of a second power grid. By implementing the invention, the voltage value input into the frequency conversion device can be controlled so that the use efficiency of the frequency conversion device is improved, and bidirectional flow of electric energy between two power grids is realized.

Description

technical field [0001] The invention relates to the field of smart grids, in particular to an AC-AC converter. Background technique [0002] With the development of the national economy, the demand for electric energy continues to increase, and the requirements for the power transmission capacity of the power grid are also getting higher and higher. In the process of power transmission of the power grid, the AC-AC converter is a particularly important electronic power device. . [0003] The electronic power devices in the existing AC-AC converters generally include converters, and the converters are generally directly connected to the power transmission grid. Therefore, the normal input voltage of the converter is relatively large, resulting in a small operating current carried by the converter itself. , resulting in lower efficiency of the converter. Contents of the invention [0004] In view of this, the embodiments of the present invention provide an AC converter, dev...

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Problems solved by technology

[0004] In view of this, the embodiment of the present invention provides an AC converter, device and computer equipment to solve the problem that the normal input voltage of the converter is relatively large, resulting in a small current carried by the converter itself, which in turn causes the converter to The problem of low usage efficiency

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