Power converter with multiple parallel inputs and multiple series outputs

Abstract

The invention discloses a power converter with multiple parallel inputs and multiple series outputs, the power converter comprising a switching network (1), an inductance-capacitance combination module (2), a transformer module (3), a rectifier module (4) and a filter module (5), wherein the switching network (1), the inductance-capacitance combination module (2), the transformer module (3), the rectifier module (4) and the filter module (5) are sequentially connected; the switching network (1) comprises a plurality of identical switching circuits in parallel; the transformer module (3) comprises a plurality of transformer groups, the transformer groups comprise a plurality of identical transformers with primary windings connected in parallel, and the transformer groups are connected withthe switching circuits correspondingly; the rectifier module (4) comprises a rectifying circuit, which is a series rectifying circuit; secondary windings of the corresponding transformers in the plurality of transformer groups are connected in series, and the secondary windings are connected in series and then are connected to the series rectifying circuit for rectification.

Description

technical field [0001] The invention belongs to the electronic circuit technology, in particular to a power converter with multiple parallel input and multiple serial output. Background technique [0002] As a new type of transportation, new energy electric vehicles have incomparable advantages over traditional vehicles in alleviating the energy crisis and improving urban air quality, representing the direction of future automotive development. The construction of charging facilities such as electric vehicle charging stations is the premise and foundation for the healthy development of the electric vehicle industry. Charging facilities mainly include AC charging piles and DC fast charging piles, and the charging power supply module is the core component of DC charging piles, and the development of its technology has attracted the attention of industry customers. Due to intensified competition in the industry, power module manufacturers are stepping up the development of a s...

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a power converter with multiple parallel inputs and multiple series outputs. The switching tubes of the switching circuits in the converter do not need to be directly connected in parallel. By connecting the multiple switching circuits in parallel, the entire converter can be greatly improved. The power level is high, and the high-voltage output is realized by connecting the rectifier circuit in series, and the serious unbalanced power problem caused by the difference in device parameters is solved by connecting the primary sides of multiple transformers in parallel and the secondary sides in series, which greatly improves the practical use of this scheme. reliability

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