Modularized electric energy router combination circuit

Abstract

The invention discloses a modularized electric energy router combination circuit which comprises a high voltage there-phase AC port, a high voltage DC port, a low voltage DC port and a low voltage three-phase AC port and internally comprises a high voltage DC bus and a low voltage DC bus and an electric energy router main circuit topology. The electric energy router main circuit topology comprises a modularized rectification and isolation level converter and an inversion level converter. The rectification and isolation level converter and the inversion level converter are connected through the low voltage DC bus. The rectification and isolation level converter submodule uses an H-bridge-based three-level resonant high-frequency double active bridge isolation converter structure. With application of the modularized electric energy router combination circuit, the problem of low degree of electric energy router combination matching in the prior art can be solved, and the device current capacity utilization rate of the electric energy router can be partially enhanced from the topology structure.

Description

technical field [0001] The invention belongs to the technical field of power electronic converters, and in particular relates to a modular electric energy router combined circuit. Background technique [0002] As the energy crisis and environmental issues become increasingly prominent, more and more renewable energy is connected to the grid, which poses many challenges to the traditional grid. Energy Internet has emerged under the background of this application. At the same time, with the development of power electronics technology, information technology, and control science, the power router, as a key device in the Energy Internet, plays an important role in power conversion, energy interconnection, power routing and autonomous management. Among them, the main circuit topology based on power electronic transformers is currently the most widely used power router topology, and due to the limitation of current device withstand voltage levels, power routers mostly adopt multi-...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to propose a modular power router combination circuit to solve the problems of low matching degree of power router combination and low utilization rate of current capacity of some devices in the prior art

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