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A power conversion device and a control method for the power conversion device

A power conversion device and power technology, applied in the direction of output power conversion device, conversion of DC power input to DC power output, conversion of AC power input to DC power output, etc., can solve the problem that the power conversion device is difficult to achieve natural voltage equalization , to achieve the effect of improving reliability

Active Publication Date: 2021-08-31
ZTE CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] A power conversion device and a control method for the power conversion device provided by the embodiments of the present invention mainly solve the technical problem that the power conversion device formed by combining multiple power conversion units in the prior art is difficult to achieve natural voltage equalization

Method used

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  • A power conversion device and a control method for the power conversion device
  • A power conversion device and a control method for the power conversion device
  • A power conversion device and a control method for the power conversion device

Examples

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Embodiment 1

[0022] This embodiment provides a power conversion device, please refer to figure 1 , specifically includes: a power conversion unit group and a control unit, wherein the power conversion unit group includes at least two power conversion units connected in series, the power conversion unit group is connected in series with the inductance unit and the power supply unit, and the output of at least one power conversion unit is used as a power conversion unit The power conversion result of the device; the control unit is respectively connected with each power conversion unit, and inputs corresponding control signals to each power conversion unit, and each control signal makes each power conversion unit have the same voltage.

[0023] Specifically, the power conversion device provided in this embodiment includes a power conversion unit group, and the power conversion unit group includes at least two power conversion units connected in series, that is, the power conversion unit group...

Embodiment 2

[0042] This embodiment provides a control method for a power conversion device, which is used for the above-mentioned power conversion device, which specifically includes: the control unit is respectively connected to each power conversion unit, and a corresponding control signal is input to each power conversion unit; each power conversion unit is connected to Corresponding control signals are input, and each control signal makes each power conversion unit have the same voltage; the output of at least one power conversion unit is used as the power conversion result of the power conversion device.

[0043] Specifically, in this embodiment, the control signal is generated by a unified control unit, and the control signal corresponding to each power conversion unit is input to the corresponding power conversion unit, and the output voltage of each power conversion unit is made the same through the control signal. Since the output of each power conversion unit is connected in para...

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Abstract

Embodiments of the present invention provide a power conversion device and a control method for the power conversion device. By setting a power conversion unit group and a control unit, the power conversion unit group includes at least two power conversion units connected in series, and the power conversion unit group and the inductor The unit and the power supply unit are connected in series, and the output of at least one power conversion unit is used as the power conversion result of the power conversion device; the control unit is respectively connected to each power conversion unit, and a corresponding control signal is input to each power conversion unit, and each control signal makes each power conversion cells have the same voltage. That is, the control unit inputs a control signal to each power conversion unit, and through the control signal, each power conversion unit has the same voltage, so as to realize the natural voltage equalization of each power conversion unit in the power conversion unit group, and improve the reliability of power conversion sex.

Description

technical field [0001] The invention relates to the technical field of electronic circuits, in particular to a power conversion device and a control method for the power conversion device. Background technique [0002] With the popularity of cloud computing and big data, the demand for communication power has greatly increased, which puts forward higher requirements for the reliability, power capacity and performance indicators of communication power supplies. High efficiency and high power density are the key to the development of communication power supplies. The inevitable trend; the power conversion device formed by combining multiple power conversion units has outstanding advantages in improving conversion efficiency and power density. However, in the current control of a power conversion device formed by a combination of multiple power conversion units, the control method for the entire power conversion circuit is complicated, and it is difficult to realize the natural...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02M1/00H02M7/219H02M3/00
CPCH02M3/00H02M7/219H02M1/0012H02M1/0067H02M1/0054H02M1/0043H02M7/23Y02B70/10
Inventor 胡月范杰林国仙董秀锋周建平樊珊珊刘宏锦
Owner ZTE CORP