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An Isolated High Boost Quasi-Switched Capacitor Converter

A technology of capacitor converter and switching capacitor, which is applied in the direction of adjusting electric variable, without intermediate conversion to AC conversion equipment, DC power input conversion to DC power output, etc., to achieve the effect of avoiding high pulsating input current and continuous current

Active Publication Date: 2019-11-22
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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  • An Isolated High Boost Quasi-Switched Capacitor Converter
  • An Isolated High Boost Quasi-Switched Capacitor Converter
  • An Isolated High Boost 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 isolated high-boost quasi-switched capacitor converter, which is composed of a quasi-double-switch step-up switched capacitor converter unit at the front stage and an isolation transformer unit at the rear stage. The voltage switched capacitor converter unit and the isolation transformer unit of the rear stage are connected through a high-frequency isolation transformer. The high-frequency isolation transformer is composed of a primary coil inductance Lp, a secondary coil inductance Ls, and a secondary coil inductance Lt. The present invention effectively reduces the input The current peak value realizes continuous input current, realizes high boost with simple topology, and combines with isolation transformer to make it have the function of isolated boost.

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 Patents(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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