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Zero-voltage switch double-input full bridge converter

A zero-voltage switching, full-bridge converter technology, used in high-efficiency power electronic conversion, conversion equipment with intermediate conversion to AC, climate sustainability, etc. It can solve the problems of complex circuit structure, many components, and complex control. , to achieve the effect of simple control, less components, and improved conversion efficiency

Inactive Publication Date: 2010-02-24
NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this type of circuit topology has the following disadvantages: the circuit structure is more complicated, and there are many components; because it is a current-type circuit topology, the control is more complicated

Method used

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  • Zero-voltage switch double-input full bridge converter
  • Zero-voltage switch double-input full bridge converter
  • Zero-voltage switch double-input full bridge converter

Examples

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specific example

[0110] A specific example of the present invention is as follows: input DC voltage: V in1 =120V, V in2 =90V; 1# source input current reference value: I in1_ref =3.4A; output DC voltage: V o =48V; rated power: P o =800W; rated current: I o =16.7A; Transformer T r Ratio of primary and secondary sides: K ps =6:4; resonant inductance: L r =0.82μH; output filter inductance: L f =48μH; output filter capacitor: C f =470μF; lead tube (Q 1 , Q 2 , Q 5 , Q 6 ): IXTH35N30 (35A / 300V); hysteresis tube (Q 3 , Q 4 ): IPW60R045CP (38A / 650V); secondary rectifier diode (D R1 -D R4 ): DSEP30-03A; Switching frequency: f s = 100kHz.

[0111] It can be seen from the above description that the zero-voltage switching multi-input full-bridge converter proposed by the present invention mainly has the following advantages:

[0112] 1. The structure is simple; the number of components is small; 2. The input and output have electrical isolation; 3. The double phase-shift control strategy...

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Abstract

The invention discloses a zero-voltage switch double-input full bridge converter, which comprises two full bridge units, an isolation transformer and a rectification and filter circuit, leads two input voltage sources to be connected in series after passing through respective full bridge unit, allows two input sources to supply power for loads simultaneously or individually; and the nature, amplitude and feature of the input sources can be same or different. By adopting double phase-shifting control strategy, zero-voltage switching of a switching tube can be realized. The converter has simplestructure and a small number of components, the input and the output are provided with electrical isolation; soft switching of the switching tube can be realized; at any moment, the full bridge converter can supply power for loads individually and simultaneously and has other advantages. In a combined power supply system of new energy resources, a multi-input direct current converter is adopted toreplace a plurality of original single-input direct current converters, so that the quantity of the components can be reduced and the cost can be lowered.

Description

technical field [0001] The invention relates to a full-bridge converter, in particular to a zero-voltage switching multi-input full-bridge converter, which belongs to a DC converter of an electric energy conversion device. Background technique [0002] With the large-scale mining and utilization of fossil energy, the world's energy situation is becoming increasingly tense. At the same time, the combustion of fossil fuels produces a large amount of waste gas, causing serious environmental pollution. Since renewable energy has the advantages of clean and pollution-free, abundant resource reserves, and recyclable utilization, the use of renewable energy to generate electricity is an important way to solve the energy crisis and environmental pollution problems. At present, the forms of renewable energy power generation that are widely used include photovoltaic power generation, wind power generation, hydropower generation, geothermal power generation, etc. The forms of power ge...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02M3/28
CPCY02B70/1491Y02B70/10
Inventor 杨东升阮新波刘福鑫李艳
Owner NANJING UNIV OF AERONAUTICS & ASTRONAUTICS