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Three-winding coupled inductor voltage-doubling type single switch tube boost direct-current converter

A technology of DC converters and coupled inductors, which is applied in the direction of converting DC power input to DC power output, adjusting electrical variables, and high-efficiency power electronic conversion. It can solve the problem of insufficient voltage lifting capability and small duty cycle of high-gain boost converter and coupled inductance turns, converter conversion efficiency is not high, etc., to improve the power conversion rate, simplify control, and avoid the effect of linearity deterioration

Active Publication Date: 2016-08-03
苏州翌工电源科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The purpose of the present invention is to address the shortcomings of the above-mentioned background technology, to provide a three-winding coupled inductor voltage doubler type single-switch step-up DC converter, which can achieve higher voltage gain with a smaller duty cycle and coupled inductor turn ratio, Solve the technical problems of the existing high-gain boost converter with insufficient voltage boosting capability, low converter conversion efficiency, and poor operational reliability

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  • Three-winding coupled inductor voltage-doubling type single switch tube boost direct-current converter
  • Three-winding coupled inductor voltage-doubling type single switch tube boost direct-current converter
  • Three-winding coupled inductor voltage-doubling type single switch tube boost direct-current converter

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Embodiment Construction

[0034] In order to further understand the content of the present invention, the present invention will be described in detail in conjunction with the accompanying drawings and embodiments.

[0035] The converter disclosed in the present invention is as figure 1 As shown, it includes: a drive unit, a first voltage doubler unit, a second voltage doubler unit and an output unit.

[0036] The drive unit includes: a first winding N 1 and switching tube S, the first winding N 1 The first terminal 1 is connected to a DC voltage source V in Positive connection, first winding N 1 The second terminal 2 of the switch tube S is connected to the drain, and the first winding N 1 There is a magnetizing inductance L connected in parallel at both ends m , the source of the switching tube S is connected to the DC voltage source V in Negative connection.

[0037] The first voltage doubler unit includes the second winding N 2 The circuit formed by the branch and the switch tube S, includi...

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Abstract

The invention discloses a three-winding coupled inductor voltage-doubling type single switch tube boost direct-current converter, and belongs to the technical field of power electronic converters. The converter comprises a driving unit, a first voltage-doubling unit, a second voltage-doubling unit and an output unit, the driving unit, the first voltage-doubling unit and the second voltage-doubling unit share one switch tube, control is simplified, the power density of the converter is improved, higher voltage gain is achieved under the small duty ratio and turn ratio of coupled inductors, and the application range of the converter is enlarged.

Description

technical field [0001] The invention discloses a three-winding coupled inductance voltage doubler single switch tube step-up direct current converter, in particular a step-up direct current converter suitable for high voltage gain occasions, belonging to the technical field of power electronic converters. Background technique [0002] In new energy power generation systems such as uninterruptible power supply (UPS, Uninterruptible Power Supply) system, high-pressure gas discharge lamp (HID, High Intensity Discharge) system, fuel cell and solar cell, it is necessary to convert a lower DC voltage into a higher DC voltage for power supply. use. In theory, the traditional boost converter can use the limit duty cycle to obtain a large voltage gain. However, in practical applications, due to the influence of device parasitic parameters, when a large duty cycle (greater than 0.8) is used, its conversion Efficiency is greatly reduced. Typical forward and flyback converters can ach...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02M3/155
CPCH02M3/155H02M1/0048H02M3/1552Y02B70/10
Inventor 胡雪峰李琳鹏李永超章家岩
Owner 苏州翌工电源科技有限公司
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