Bidirectional ACDC circuit compatible with three-phase and single-phase alternating current power supply and control method thereof

A single-phase AC, circuit technology, applied in the direction of converting AC power input to DC power output, electrical components, output power conversion devices, etc., can solve the incompatibility, inconvenience and compatibility of three-phase and single-phase bidirectional ACDC circuits. problems such as poor compatibility, to achieve the effect of good compatibility, extended use range, and cost reduction

Pending Publication Date: 2018-11-13
XIAN TELD LINCHR NEW ENERGY TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] The existing three-phase and single-phase bi-directional ACDC circuits are not compatible, and in some practical applications only single-phase (such as figure 1 shown) or a three-phase AC power s

Method used

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  • Bidirectional ACDC circuit compatible with three-phase and single-phase alternating current power supply and control method thereof
  • Bidirectional ACDC circuit compatible with three-phase and single-phase alternating current power supply and control method thereof
  • Bidirectional ACDC circuit compatible with three-phase and single-phase alternating current power supply and control method thereof

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Embodiment Construction

[0033] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0034] In all embodiments of the present invention, the first connection terminal, the second connection terminal, the third connection terminal and the fourth connection terminal are designated as A phase connection terminal, B phase connection terminal, C phase connection terminal, N phase connection terminal ; The switching device selection relay used in the embodiment, the above is for the convenience of a clear description of the technical solution, and should not be understood as a limitation of this solution.

[0035] The circuit structure of the present invention includes four connection terminals, wherein the first connection terminal A, the second connection terminal B and the third connection terminal C are respectively connected to the corresponding first inductance L1, second inductance L2 and third inductance L3 Corresponding to t...

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Abstract

The invention discloses a bidirectional ACDC circuit compatible with three-phase and single-phase alternating current power supply and a control method thereof. The bidirectional ACDC circuit comprises four wiring terminals, wherein the first wiring terminal, the second wiring terminal and the third wiring terminal are respectively connected to a corresponding power converter first bridge arm middle point, a corresponding power converter second bridge arm middle point and a corresponding power converter third bridge arm middle point through a corresponding first inductor L1, a corresponding second inductor L2 and a corresponding third inductor L3; the fourth wiring terminal is connected to a power converter fourth bridge arm middle point; the four power converter bridge arms are in parallel connection and further are in parallel connection with a bus capacitor C4. The bidirectional ACDC circuit further comprises a first main switch device connected between the first wiring terminal andthe first inductor L1, a second main switch device connected between the second wiring terminal and the second inductor L2 and a third main switch device connected between the third wiring terminal and the third inductor L3. The bidirectional ACDC circuit disclosed by the invention can achieve a single-phase and three-phase alternating current power supply compatibility effect, can effectively expand a circuit use range, has convenience for a user to use and reduces cost.

Description

technical field [0001] The invention belongs to the technical field of electric vehicle charging / energy storage, and relates to a bidirectional ACDC circuit compatible with three-phase and single-phase AC power sources and a control method thereof. Background technique [0002] The existing three-phase and single-phase bi-directional ACDC circuits are not compatible, and in some practical applications only single-phase (such as figure 1 shown) or a three-phase AC power source (such as figure 2 As shown), people need to develop two sets of devices to meet the requirements of different power sources, which are costly, inconvenient to use, and poor in compatibility. Contents of the invention [0003] In order to solve the above problems, the object of the present invention is to provide a bidirectional ACDC circuit compatible with three-phase and single-phase AC power supply and its control method. Through reasonable circuit structure design, the effect of single-phase and ...

Claims

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Application Information

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IPC IPC(8): H02M7/797
CPCH02M7/797
Inventor 薛亮李灵鑫冯尚民
Owner XIAN TELD LINCHR NEW ENERGY TECH CO LTD
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