Multi-port converter for electric automobile cluster charging and discharging and control method of multi-port converter

An electric vehicle, multi-port technology, applied in the direction of electric vehicle charging technology, electric vehicles, current collectors, etc., can solve the problems that electric vehicle charging cannot be realized, and the multi-port converter has few topologies

Active Publication Date: 2016-03-16
HEFEI UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there are still few proposed multi-port converter topologies for EV cluster charging and discharging.
Moreover, as far as the existing multi-port converters for electric vehicle cluster charging and discharging a

Method used

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  • Multi-port converter for electric automobile cluster charging and discharging and control method of multi-port converter
  • Multi-port converter for electric automobile cluster charging and discharging and control method of multi-port converter
  • Multi-port converter for electric automobile cluster charging and discharging and control method of multi-port converter

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Embodiment Construction

[0047] see figure 1 , the structural form of the multi-port converter used for electric vehicle cluster charging and discharging in this embodiment is:

[0048] There are a total of n ports in the multi-port converter, which is taken as n=5 in this embodiment; among the n ports, a total of n-1 ports from the 1st port to the n-1th port are used to connect with the electric vehicle battery, and n- One port is electric vehicle integration port 1, electric vehicle integration port 2...electric vehicle integration port n-1, denoted as: electric vehicle integration port i, i=1,2,3...n-1; n ports The nth port in is used to connect with the DC bus in the DC microgrid, and the nth port is the DC side port.

[0049] Such as figure 1 As shown, in this embodiment, the switching tube S i and diode D i Constitute the discharge control channel of the integrated port i of the electric vehicle, with the switch tube S i ' and the diode D i 'Constitute the charging control channel of the i...

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Abstract

The invention discloses a multi-port converter for electric automobile cluster charging and discharging and a control method of the multi-port converter. The multi-port converter is characterized in that the multi-port converter is totally provided with n ports; (n-1) ports from the first port to the (n-1)th port in the n ports are respectively used for being connected with an electric automobile battery; and the n-th port in the n ports is used for being connected with a direct current bus in a direct current micro grid. The control method of the multi-port converter is characterized in that the duty ratio of each switch tube is obtained through calculation; driving pulses corresponding to each switch tube are formed by utilizing the duty ratio obtained through calculation for controlling the on-off state of each switch tube; and the discharging control and the charging control on the electric automobile battery are further realized. The multi-port converter and the control method are used for electric automobile cluster charging and discharging control, and the interaction function between an electric automobile and an electric network is fully achieved.

Description

technical field [0001] The invention relates to a multi-port converter for electric vehicle cluster charging and discharging and its control method Background technique [0002] With the continuous improvement of the penetration rate of electric vehicles, how to integrate electric vehicles to give full play to their advantages and use the interactive functions of electric vehicles and the grid to provide some auxiliary services for the grid, such as peak shaving, frequency regulation and spinning reserve, has become an issue of increasing concern. The traditional method is to integrate electric vehicles and renewable energy in the form of micro-grids, such as DC micro-grids, AC micro-grids or AC-DC hybrid micro-grids, and then connect them to the large power grid, in which each electric vehicle has a corresponding independent power converter. Therefore, this method has some disadvantages: each electric vehicle needs to realize power conversion through the corresponding powe...

Claims

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Application Information

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IPC IPC(8): H02J7/00
CPCB60L53/00B60L53/60H02J7/0019H02J7/0024Y02T10/70Y02T10/7072Y02T90/12Y02T90/14
Inventor 茆美琴施汉杰张榴晨
Owner HEFEI UNIV OF TECH
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