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Multi-winding high-frequency magnetic coupling converter and power decoupling control method thereof

A power decoupling and control method technology, applied in the direction of DC power input conversion to DC power output, control/regulation system, output power conversion device, etc., can solve problems such as power coupling and DC bias, and reduce power loss , the effect of improving flexibility

Pending Publication Date: 2022-03-25
XI AN JIAOTONG UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] However, there are still two technical problems in this converter, namely DC bias and power coupling

Method used

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  • Multi-winding high-frequency magnetic coupling converter and power decoupling control method thereof
  • Multi-winding high-frequency magnetic coupling converter and power decoupling control method thereof
  • Multi-winding high-frequency magnetic coupling converter and power decoupling control method thereof

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Embodiment Construction

[0053] In order to make the purpose and technical solution of the present invention clearer and easier to understand. The present invention will be further described in detail below in conjunction with the drawings and embodiments. The specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0054] In describing the present invention, it should be understood that the terms "center", "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", " The orientations or positional relationships indicated by "vertical", "horizontal", "top", "bottom", "inner" and "outer" are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and Simplified descriptions, rather than indicating or implying that the device or element referred to must have a particular orientation, be constructed and operate in a particular ori...

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Abstract

The invention discloses a multi-winding high-frequency magnetic coupling converter and a power decoupling control method thereof. The multi-winding high-frequency magnetic coupling converter comprises an n-winding high-frequency transformer, n LC resonance branches, n single-phase full / half-bridge converters and n direct-current side supporting capacitors, the power decoupling control method comprises the following steps: obtaining excitation voltage according to a node voltage equation of a T-type equivalent circuit of the n-winding high-frequency magnetic coupling converter; the difference between the square wave voltage of each winding and the excitation voltage is obtained, and the difference is divided by the equivalent reactance of each branch to obtain winding current; the conjugate of the current is multiplied by the square wave voltage to obtain the apparent power of each winding; and calculating the approximate expression of the active power of each winding according to the apparent power of each winding. The LC resonance branch is used for replacing a reactor in a physical circuit, direct current bias is eliminated through the direct current blocking characteristic of the capacitor, and then magnetic circuit saturation of the transformer is avoided.

Description

technical field [0001] The invention belongs to the technical field of power electronic electric energy conversion, and relates to a multi-winding high-frequency magnetic coupling converter and a power decoupling control method thereof. Background technique [0002] The development and utilization of new energy has received more and more attention, and it has also brought new challenges to power equipment. On the one hand, with the popularization of new energy vehicles, the demand for medium-voltage AC and DC power conversion and multi-ports in cities is increasing, and the city center and residential areas with strong demand, due to their space limitations and dense population , it is required to reduce the volume and weight of power conversion equipment as much as possible while improving safety. Therefore, modularized and miniaturized isolated converters have become the focus of attention in the industry. On the other hand, with the vigorous development of distributed ne...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02M3/335
CPCH02M3/33576Y02B70/10
Inventor 杜思行何思承吕姝瑶刘进军
Owner XI AN JIAOTONG UNIV
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