Electric energy transmission device based on isolated full-bridge boosting converter circuit structure and control method thereof

Abstract

The invention discloses an electric energy transmission device based on an isolated full-bridge boosting converter circuit structure and a control method thereof. The electric energy transmission device comprises a fuel battery which is capable of outputting a low voltage direct current, a boosting converter which is electrically connected with the fuel battery and outputs a high voltage direct current, an inverter which inputs the high voltage direct current and outputs a stable alternating current, and a filter used for filtering out higher harmonics, wherein a fly-back winding is arranged on an input inductor of the boosting converter, an output end of the fly-back winding is connected with an output end of the boosting converter, and a loop is formed for releasing the energy in the input inductor. The invention further discloses a control method of the electric energy transmission device based on the isolated full-bridge boosting converter circuit structure. The electric energy transmission device has the advantages that the output voltage is stable, the controllability is high and the charging time is short.

Description

technical field [0001] The invention relates to a solid fuel cell power generation system, in particular to an electric energy transmission device based on an isolated full-bridge boost converter circuit structure and a control method thereof. Background technique [0002] The conventional single-stage inverter structure cannot meet the inverter requirements of the solid oxide fuel cell power generation system. The solid oxide fuel cell power generation system requires a two-stage inverter, and the front-stage DC / DC converter upgrades the low-voltage direct current to a stable DC bus voltage , the rear-stage inverter inverts the voltage of the previous stage into a stable alternating current that can be used by the load. At present, the topological structures of DC / DC boost converters mainly include Boost, single-ended forward converter, single-ended flyback circuit, and full-bridge circuit. The full-bridge circuit is suitable for high-voltage and medium-power applications,...

AI Technical Summary

Problems solved by technology

[0005] The present invention also designs and develops a control method based on the circuit structure of the isolated full-bridge boost converter. The purpose is to solve the problem of poor controllability of the output voltage of the solid oxide fuel cell inverter itself. In order to improve the reliability of electricity consumption and ensure the quality of electricity consumption for users

Images