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Flexible DC-DC converter with wide input range and variable topological

A flexible DC, variable topology technology, applied in the direction of converting DC power input to DC power output, instruments, adjusting electrical variables, etc., can solve the problems of lower power supply cost performance, device waste, system stability degradation, etc., to reduce device redundancy. surplus, cost reduction, and efficient operation

Inactive Publication Date: 2010-07-21
ZHEJIANG UNIV
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Problems solved by technology

However, this solution has a big disadvantage in terms of cost advantages. Partial / full redundancy of components will cause a great drop in cost performance of power supplies and waste of components, and with the increase of components, the stability of the system will also decrease at the same time, which is not the best solution. The best solution for wide-range voltage input power supply equipment

Method used

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  • Flexible DC-DC converter with wide input range and variable topological
  • Flexible DC-DC converter with wide input range and variable topological

Examples

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Embodiment Construction

[0022] Referring to Figure 1, in the example shown in Figure 1, the rectification network is a zero-type full-wave rectification circuit composed of an isolation transformer and two diodes.

[0023] The wide input range variable topology flexible DC-DC converter of the present invention includes:

[0024] 1) The power supply 110 is powered by a DC power supply V IN and a SPST switch K 1-a Composition in series;

[0025] 2) The input capacitor part 120 includes two capacitors C 1 、C 2 , two SPDT switches K 2-a , K 2-b , the first capacitance C 1 One end of the second SPDT switch K 2-b The connection point of terminal 1 is connected to the positive pole of power supply 110, and the first capacitor C 1 the other end and the first SPDT switch K 2-a The switching point is connected; the second capacitor C 2 One end of the SPDT switch with the first K 2-a The connection point of terminal 1 is connected to the negative pole of power supply 110, and the second capacitor C ...

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Abstract

The invention discloses a variable topology flexible dc-dc converter with wide input range, which comprises a power supply with a SPST switch, an input capacitor part with two SPDT switches, a dc conversion circuit with four switching tubes, a resonance network with a SPDT switch, a rectifier network and a filter network with a SPDT switch. The converter adopts different combinations of the connection states of SPST switch and SPDT switches to realize conversion with optimum circuit topology under different input voltage ranges, so the duty cycle is relatively unchanged; the whole efficiency of the converter in complete input voltage range is improved; the element redundancy of the system is effectively reduced, and the cost is reduced.

Description

technical field [0001] The invention relates to a DC converter, in particular to a variable topology flexible DC-DC converter suitable for a wide range of input occasions. Background technique [0002] With the further development of the power electronics industry and the further improvement of the requirements for power supply products, the concept of power electronics integrated standard modules has become a very hot topic in the current power supply industry, and one of the difficulties is to classify and study different power electronic converters , so that the power supply design can tend to be standardized. At present, an ideal integrated standardized power module requires compatibility with ultra-wide input voltage range and wide load range, and can obtain good working performance in different input and output occasions, and then obtain smaller cost, volume, weight and system loss . In the process of achieving this goal, the first thing engineers have to face is to ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02M3/335
CPCY02B70/1433Y02B70/10
Inventor 陈威张伟吕征宇
Owner ZHEJIANG UNIV
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