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Interleaved parallel magnetic-integration bidirectional full-bridge LLC resonant converter

A resonant converter and resonant transformer technology, which is applied in the direction of converting DC power input to DC power output, instruments, adjusting electrical variables, etc. problems with operation

Pending Publication Date: 2017-07-07
LIAONING TECHNICAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Most of the LLC converters in the prior art adopt a half-bridge structure, which can only operate in one direction. Magnetic integration only realizes the integration of a single transformer and a single inductor, and it is difficult to realize the high power, high transformation ratio, and small size of the LLC resonant converter. and two-way high-efficiency operation

Method used

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  • Interleaved parallel magnetic-integration bidirectional full-bridge LLC resonant converter
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  • Interleaved parallel magnetic-integration bidirectional full-bridge LLC resonant converter

Examples

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Effect test

Embodiment 1

[0044] An interleaved parallel magnetically integrated bidirectional full-bridge LLC resonant converter, such as figure 1 As shown, it includes two interleaved and parallel LLC resonant converters. The resonant transformer and resonant inductor in the two interleaved and parallel bidirectional full-bridge LLC resonant converters use integrated magnetic parts to achieve magnetic integration; the first bidirectional full-bridge LLC resonant The converter includes a first primary circuit, a first secondary circuit and a resonant transformer T R1 and its magnetizing inductance L m1 ; The first primary side circuit includes a power switch tube S 11 ~S 14 , Resonant inductance L 11 and resonant capacitor C 11 ; The first secondary side circuit includes a power switch tube S 15 ~S 18 , Resonant inductance L 12 and resonant capacitor C 12 ; The second bidirectional full-bridge LLC resonant converter includes a second primary circuit, a second secondary circuit and a resonant t...

Embodiment 2

[0049] An interleaved parallel magnetically integrated bidirectional full-bridge LLC resonant converter, such as figure 2 shown in figure 1 The basis also includes two input capacitors C 1 and C 2 , input capacitance C 1 and C 2 series, the input capacitance C after series connection 1 Connected to the two input terminals of the first bidirectional full-bridge LLC resonant converter, the input capacitor C 2 Connected to the two input terminals of the second bidirectional full-bridge LLC resonant converter; connected to two series input capacitors C of two interleaved parallel bidirectional full-bridge LLC resonant converters 1 and C 2 connected to the high voltage DC power supply V H At both ends, the output terminals of two interleaved parallel bidirectional full-bridge LLC resonant converters are connected to the low-voltage DC power supply V L both ends. Resonant transformer T R1 and its magnetizing inductance L m1 and resonant transformer T R2 and its magnetiz...

Embodiment 3

[0053] An interleaved parallel magnetically integrated bidirectional full-bridge LLC resonant converter, such as image 3 shown in figure 1 It also includes an intermediate capacitor C and two interleaved parallel magnetically integrated bidirectional Buck / Boost converters; the first bidirectional Buck / Boost converter includes a power switch tube S 1 , S 2 and inductance L 1 , the second bidirectional Buck / Boost converter includes a power switch S 3 , S 4 and inductance L 1 ; The inductance of the first bidirectional Buck / Boost converter and the inductance of the second bidirectional Buck / Boost converter are reversely magnetically coupled to form a magnetically integrated coupled inductance; two bidirectional Buck / Boost converters after interleaved parallel magnetic integration The input terminal is connected to the high voltage DC power supply V H The two ends of the intermediate capacitor C are connected to the output end, the input end of the two-way interleaved paral...

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Abstract

The invention provides an interleaved parallel magnetic-integration bidirectional full-bridge LLC resonant converter and relates to the technical field of power and electronic applications. The interleaved magnetic-integration bidirectional full-bridge LLC resonant converter comprises two paths of an interleaved parallel bidirectional full-bridge LLC resonant converter. The first path of the bidirectional full-bridge LLC resonant converter comprises a first primary-side circuit, a first secondary-side circuit, a resonant transformer and a magnetic inductor thereof. The second path of the bidirectional full-bridge LLC resonant converter comprises a second primary-side circuit, a second secondary-side circuit, a resonant transformer and a magnetic inductor thereof. The primary-side circuit and the secondary-side circuit of each path of the bidirectional full-bridge LLC resonant converter are respectively in the form of a full-bridge LLC resonant circuit and are used for realizing the bidirectional energy flow. The two resonant transformers, the magnetic inductors thereof and four resonant inductors of the two paths of the interleaved parallel bidirectional full-bridge LLC resonant converter are magnetically integrated through integrated magnetic pieces. According to the technical scheme of the invention, the large-power, high-transformation-ratio, small-volume, bidirectional and high-efficiency operation of the electric energy is realized.

Description

technical field [0001] The invention relates to the technical field of power electronics applications, in particular to an interleaved parallel magnetically integrated bidirectional full-bridge LLC resonant converter. Background technique [0002] In recent years, switching power supplies that provide electrical energy for various electrical equipment are developing in the direction of low voltage, high current, small size, light weight, high efficiency, thinness and integration, including for the central processing unit (Central Processing Unit) of computers. , CPU) and digital signal processors (Digital Signal Processing, DSP) and other high-precision, high-speed microprocessors to provide precision power supply voltage adjustment modules, as well as widely used in electric vehicles, hybrid vehicles, uninterruptible power supplies that have emerged in recent years , power quality regulation power supply, aviation power supply, new energy power generation and superconductin...

Claims

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Application Information

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IPC IPC(8): H02M3/335H02M3/158
CPCH02M3/1584H02M3/33584H02M1/0058H02M3/1586Y02B70/10
Inventor 杨玉岗
Owner LIAONING TECHNICAL UNIVERSITY
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