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Charging station system based on solid-state transformer

A solid-state transformer and charging station technology, applied in the field of charging station system, can solve the problems of high cost and construction cost, expensive unit price, thick cables, etc., and achieve the effects of small communication interference, low cost, and low power and energy loss

Pending Publication Date: 2020-12-22
DELTA ELECTRONICS (SHANGHAI) CO LTD
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

[0007] 3) Both the DC load and the AC load need to go through a two-stage converter for voltage conversion, and the efficiency is low
[0008] 4) In occasions such as the fast charging of electric vehicles, the cable current is relatively large, the required cable is relatively thick, and the unit price is expensive. The cost and construction cost of laying low-voltage cables for long distances are relatively high

Method used

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  • Charging station system based on solid-state transformer
  • Charging station system based on solid-state transformer
  • Charging station system based on solid-state transformer

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Embodiment Construction

[0035] In order to make the description of the present invention more detailed and complete, reference may be made to the attached drawings and various embodiments described below, and the same numbers in the drawings represent the same or similar components. On the other hand, well-known components and steps have not been described in the embodiments in order not to limit the invention unnecessarily. In addition, for the sake of simplifying the drawings, some known and conventional structures and elements will be shown in a simple and schematic manner in the drawings.

[0036] Such as figure 2 As shown, it shows the networking architecture of the SST-based hybrid charging station system of the first preferred embodiment of the present invention, which includes at least one SST, at least one non-isolated charger (Charger) and at least one isolated charger. Wherein, the input side of the SST is connected to the distribution network, and the output side is connected to the DC...

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Abstract

The invention provides a charging station system based on a solid-state transformer, and the system comprises at least one solid-state transformer, and the input side of the solid-state transformer isconnected with a power distribution network, and the output side is connected with at least one DC bus; and the DC bus is connected with at least one isolated charger and a non-isolated charger. Thecharging station system has high efficiency, does not need to be equipped with extra power quality management equipment, and can reduce power loss, reduce cost and the like.

Description

technical field [0001] The invention relates to a charging station system, in particular to a charging station system based on a solid-state transformer. Background technique [0002] With the increasing demand for green and smart electricity, the voltage level of the power electronic transformer (Power Electronic Transformer, PET), also known as the solid state transformer (Solid state transformer, SST) is gradually changing from the traditional mainstream low-voltage mains (220V / 380V) Expansion to the medium-voltage distribution network (2.4kV / 35kV), so that power electronic devices are increasingly used in medium-voltage systems. At the same time, with the rapid development of the Internet data center and the electric vehicle industry, the demand for DC power is increasing. The diversity of applications and the diversity of system architecture require that the design of the converter is easy to expand. Therefore, the series of multiple power electronic converters , paral...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J3/38H02J3/32H02J7/00
CPCH02J3/32Y02E70/30
Inventor 陈鑫张伟强
Owner DELTA ELECTRONICS (SHANGHAI) CO LTD
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