Compound dual-asymmetric voltage-multiplying unit DC-DC converter

A DC-DC, asymmetric technology, applied in the field of compound double asymmetric voltage doubling unit DC-DC converter, can solve the problems of inability to achieve high duty cycle, low efficiency, high cost, and achieve excellent boost voltage performance , the effect of reducing fluctuations in current and power, and improving efficiency

Inactive Publication Date: 2018-11-23
SOUTHEAST UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, in practical applications, due to the limitation of parasitic parameters, it is impossible to achieve a relatively high duty cycle
If a cascaded topology is used, the problems of low efficiency and high cost caused by the increase in the number of devices will be highlighted again.

Method used

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  • Compound dual-asymmetric voltage-multiplying unit DC-DC converter
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  • Compound dual-asymmetric voltage-multiplying unit DC-DC converter

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Embodiment Construction

[0030] The technical solution of the present invention will be further introduced below in conjunction with specific implementation methods and accompanying drawings.

[0031] The first specific implementation mode discloses a compound DC-DC converter with double asymmetrical voltage doubler units, such as figure 1 shown, including the input supply V in , input supply V in The anode of the coupled inductor is connected to the primary winding L 1 One end of the coupled inductor primary winding L 1The other ends of the coupled inductors are respectively connected to the secondary winding L of the coupled inductor 2 One end of the capacitor C 4 One end of the diode D 3 The anode and the drain of the switching tube S, the secondary winding L of the coupled inductor 2 The other end of the capacitor C is connected 3 One end of the capacitor C 3 The other ends of the diodes are respectively connected to D 3 the cathode and diode D 4 anode of the diode D 4 The cathodes are ...

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Abstract

The invention discloses a compound dual-asymmetric voltage-multiplying unit DC-DC converter, comprising an input power Vin. The positive pole of the input power Vin is connected to one end of a primary winding L1 of a coupled inductor, and the other end of the primary winding L1 of the coupled inductor is separately connected to one end of a secondary winding L2 of the coupled inductor, one end ofa capacitor C4, an anode of a diode D3, and the drain of a switching transistor S. The other end of the secondary winding L2 of the coupled inductor is connected to one end of a capacitor C3; the other end of the capacitor C3 is separately connected to a cathode of the diode D3 and an anode of a diode D4; a cathode of the diode D4 is separately connected to the other end of the capacitor C4 and an anode of an output rectifier diode Do; and a cathode of the output rectifier diode Do is separately connected to one end of an output capacitor Co and one end of a load resistor R. The other end ofthe output capacitor Co, the other end of the load resistor R, and the source of the switching transistor S are separately connected to the negative pole of the input power Vin. According to the DC-DCconverter of the invention efficiency and the ratio of gain are improved.

Description

technical field [0001] The invention relates to a DC-DC converter, in particular to a composite double asymmetrical voltage doubler unit DC-DC converter. Background technique [0002] The problem of environmental pollution and energy depletion is imminent. The development of clean renewable energy has attracted widespread attention from all over the world. Experts and scholars all over the world are working on the research and development of new energy applications, among which solar energy and wind energy have been obtained. a wider range of applications. However, for these systems, how to operate grid-connected and meet the high-voltage requirements in the grid is still the most important issue. DC-DC converters with high voltage gain characteristics play an indispensable role in the grid-connected process of new energy generation. Theoretically, the traditional BOOST converter can increase the voltage gain by increasing the duty cycle. However, in practical applications...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02M3/155
CPCH02M3/155H02M3/1552
Inventor 林明耀艾建刘同民
Owner SOUTHEAST UNIV
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