Isolation type highly boosted quasi-switched capacitor converter

A capacitor converter, switched capacitor technology, applied in the direction of adjusting electrical variables, converting equipment without intermediate conversion to AC, converting DC power input to DC power output, etc., to achieve the effect of continuous current and avoid high pulsating input current

Active Publication Date: 2018-03-06
XIAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, switched capacitor converters have the disadvantage of high pulsating input current

Method used

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  • Isolation type highly boosted quasi-switched capacitor converter
  • Isolation type highly boosted quasi-switched capacitor converter
  • Isolation type highly boosted quasi-switched capacitor converter

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Embodiment Construction

[0019] The present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0020] The present invention is an isolated high-boost quasi-switched capacitor converter, the structure of which is as follows figure 1 As shown, it consists of a two-stage structure consisting of the quasi-dual-switch step-up switched capacitor converter unit of the front stage and the isolation transformer unit of the rear stage. They are connected through a high-frequency isolation transformer. The high-frequency isolation transformer is composed of the primary coil inductance Lp, the secondary coil inductance Ls, and the secondary coil inductance Lt.

[0021] Among them, the specific structure of the quasi-dual-switch step-up switched capacitor converter unit is as follows: it includes capacitor C1, inductor L2, leakage inductance Lm, switch tube Q, capacitor C2, capacitor C2 and capacitor C1, which are sequentially connected to the posi...

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PUM

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Abstract

The invention discloses an isolation type highly boosted quasi-switched capacitor converter. The isolation type highly boosted quasi-switched capacitor converter comprises two stages of structures including a pre-stage quasi double-switch boosted switched capacitor converter unit and a post-stage isolation transformer unit, the pre-stage quasi double-switch boosted switched capacitor converter unit and the post-stage isolation transformer unit are connected through a high-frequency isolation transformer, and the high-frequency isolation transformer is formed by a primary coil inductor Lp, a secondary coil inductor Ls and a secondary coil inductor Lt. According to the isolation type highly boosted quasi-switched capacitor converter, an input current peak value is effectively reduced, continuous input current is realized, high boosting is realized through a simple topology, and the function of isolation boosting is realized with the combination of the isolation transformer.

Description

technical field [0001] The invention belongs to the technical field of switching power supply applications, and in particular relates to an isolated high-boost quasi-switched capacitor converter. Background technique [0002] Solar photovoltaic (PV) power generation systems and electric vehicle (EV) or hybrid vehicle applications mostly require high voltage gain DC-DC converters. When the high boost converter is used for electric vehicle power supply, it is used as a power converter between the motor or generator unit and the battery pack. And when it is used in a solar photovoltaic power generation system, a high boost converter plays a vital role in converting the varying input DC voltage into a stable output voltage. In addition, in traditional electric vehicle chargers, the DC power converter consists of a DC-DC boost converter and a half-bridge or full-bridge topology, and isolated DC-DC converters are widely used in switching power supplies. The advantage is that in ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02M3/335H02M3/07
CPCH02M3/07H02M3/3353H02M3/33569H02M1/007
Inventor 杨磊张嘉翔于文倩同向前
Owner XIAN UNIV OF TECH
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