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Bidirectional DC/DC device using auxiliary winding to regulate power inductance

A technology for auxiliary windings and power inductors, which is applied in the direction of output power conversion devices, electrical variable adjustment, control/regulation systems, etc., can solve the problems of large volume and poor transient response, and achieve small volume, strong transient response, The effect of enhancing the transient response

Active Publication Date: 2020-01-31
TAIYUAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The present invention is a bidirectional DC / DC device that uses an auxiliary winding to adjust power inductance. A Bidirectional DC / DC Device with Winding Regulated Power Inductor

Method used

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  • Bidirectional DC/DC device using auxiliary winding to regulate power inductance
  • Bidirectional DC/DC device using auxiliary winding to regulate power inductance

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Embodiment Construction

[0011] The technical solutions of the present invention will be further described in more detail below in conjunction with specific embodiments. Apparently, the described embodiments are only some of the embodiments of the present invention, but not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present invention.

[0012] refer to figure 1 , figure 1 It is a schematic diagram of a bidirectional DC / DC device using an auxiliary winding to adjust power inductance provided by the present invention. The device includes: a bidirectional DC / DC power unit and an inductance adjustment control unit, wherein the bidirectional DC / DC power unit includes a high-voltage side filter 3, a switch circuit 4, a power inductor 5, a low-voltage side filter 7, a supercapacitor module 10 and Inductance magnetic core 28; Inductance ad...

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Abstract

The invention discloses a bidirectional DC / DC device using an auxiliary winding to regulate power inductance. The whole set of device is composed of a bidirectional DC / DC power unit and an inductanceregulating control unit. In normal operation, an inductance core works in the critical saturation interval. As that current increases, the inductance core works briefly in the saturation interval, thepower inductance value is reduced and the transient response is enhanced. The on-off of the power electronic switch in the current regulating circuit is controlled by monitoring the change of the power inductance current in real time to further regulate the magnitude and the direction of the power inductance auxiliary winding current so that the inductance core works in the critical saturation interval again and the volume of the power inductance is reduced. The device has the characteristics of low current ripple, high transient response, high integration, small volume, easy carrying, high practicability, etc.

Description

technical field [0001] The invention belongs to the technical field of power electronics, and in particular relates to a bidirectional DC / DC device using an auxiliary winding to adjust power inductance. Background technique [0002] The bidirectional DC / DC device can realize two-quadrant operation, so that energy can flow in both directions, and is widely used in various occasions that require stable grid voltage and energy recovery, such as new energy power generation, micro-grid, and hybrid mechanical equipment. When voltage or energy fluctuations occur on the DC bus, a bidirectional DC / DC device is required to stabilize the fluctuating voltage or to quickly absorb and release sudden energy changes. [0003] In many electronic devices, the power inductor component in a bidirectional DC / DC device is one of the main factors affecting its overall size and weight. Its size depends on the maximum current flowing through it and the maximum allowable current ripple. The tradition...

Claims

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Application Information

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IPC IPC(8): H02M3/335H02M1/14
CPCH02M1/14H02M3/33584
Inventor 高妍杨磊张红娟靳宝全王宇刘昕白清
Owner TAIYUAN UNIV OF TECH
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