Non-contact electric energy transmission-based modular multilevel converter for conversion station

Abstract

A non-contact electric energy transmission-based modular multilevel converter for a conversion station comprises a three-phase bridge arm, bridge arm reactors and non-contact electric energy transmission-based sub-module systems, wherein a plurality of bridge arm reactors and a plurality of sub-module systems are respectively cascaded onto the three-phase bridge arm, a magnetic coil, a front-stage bridge circuit, an energy storage capacitor, a rear-stage bridge circuit, an emission coil and a framework wound with the coil are arranged in each non-contact electric energy transmission-based sub-module system, diodes in the bridge circuits are respectively and reversely connected in parallel with switch tubes, and each sub-module system can be connected with a non-contact electric energy transmission-based battery pack. The converter is high in modularization and can be arranged in a lamination mode, and the occupancy area is reduced; with high modularization, the cost is greatly reduced, a problem module can be replaced at any time, and the lifetime of the whole conversion station is greatly prolonged; and by series connection of the plurality of sub-modules, the voltage class of a single sub-module is reduced, and the safety is greatly improved.

Description

Technical field: [0001] The invention relates to the field of electricity, in particular to electric vehicle technology, in particular to electric vehicle charging and swapping technology, and in particular to a modular multilevel converter for a swapping station based on non-contact power transmission. Background technique: [0002] Energy and the environment have become the most concerned issues at present. In order to solve the two major problems of energy and environmental protection, the country has introduced many measures to develop electric vehicles. But how to charge electric vehicles is a difficult problem that must be faced to make it "run further". In the prior art, charging methods mainly include: plug-in charging and recharging. However, the pioneers of electric vehicles in my country, such as urban sanitation and public transportation, consider the time issue, and it is unrealistic to charge by inserting charging piles. To solve the power supply problem of l...

AI Technical Summary

Problems solved by technology

[0003] The object of the present invention is to provide a modular multilevel converter for a power station based on non-contact power transmission. The modular multilevel converter for a power station based on non-contact power transmission needs to solve In the existing technology, building a power station to replace batteries instead of charging leads to technical problems such as large capital investment, large floor area, inconvenient battery replacement, long battery replacement time, and low power replacement efficiency

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