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Input series-connection type auxiliary power supply

An auxiliary power supply, series-connected technology, applied in the direction of circuit, DC power input conversion to DC power output, electrical components, etc., can solve the problems that the converter is not suitable for multi-output occasions, the converter output wiring is complicated, etc., and achieves a simple structure. , the effect of high reliability

Active Publication Date: 2017-12-01
HEILONGJIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, if this type of converter is applied to occasions that require multiple outputs, the corresponding output circuits of the internal series circuits need to be connected in parallel or in series, which will make the output wiring of the converter very complicated. Therefore, this type of converter itself is not suitable for multi-output applications

Method used

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  • Input series-connection type auxiliary power supply
  • Input series-connection type auxiliary power supply
  • Input series-connection type auxiliary power supply

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0044] Example 1: Combining image 3 , Figure 5 with Figure 7 (a) For illustration, the primary side of the integrated transformer T of the power supply is composed of two identical circuit units in series (the number of the same series circuits can also be greater than 2), where: U i is the DC input voltage, U i1 , U i2 is the input voltage of each series circuit, C i1 、C i2 (C i1 =C i2 ) is the filter capacitor on the input side of each series circuit (these capacitors do not have the function of energy storage, so their capacitance is usually less than 1μF), S 1 , S 2 It is the switching tube of the circuit (usually a power MOSFET switching tube). Each series circuit shares an integrated power transformer T and a set of output circuits, where: W p1 , W p2 is the primary winding of the integrated transformer, and the corresponding winding turns are n p1 , n p2 (n p1 =n p2 ); s1 , W s2 is the secondary winding of the integrated transformer, and the correspo...

Embodiment 2

[0059] Embodiment 2: Combination Figure 4 , Image 6 with Figure 7 (b) For illustration, the primary side of the transformer T of the power supply is composed of two identical circuit units in series (the number of the same series circuits can also be greater than 2), where: U i is the DC input voltage, U i1 , U i2 is the input voltage of each series circuit, C i1 、C i2 (C i1 =C i2 ) is the filter capacitor on the input side of each series circuit (these capacitors do not have the function of energy storage, so their capacitance is usually less than 1μF), S 1 , S 2It is the switching tube of the circuit (usually a power MOSFET switching tube). Each series circuit shares an integrated power transformer T and a set of output circuits, where: W p1 , W p2 is the primary winding of the integrated transformer, and the corresponding winding turns are n p1 , n p2 (n p1 =n p2 ); s1 , W s2 is the secondary winding of the integrated transformer, and the corresponding w...

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PUM

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Abstract

The invention provides an input series-connection type auxiliary power supply, and belongs to the technical field of electric power and electronic technology and switch power supplies. According to the input series-connection type auxiliary power supply, the defects during application of the conventional technical scheme in occasions of high-voltage input (the mode of input series connection is caused by high-voltage input) and multi-output (intermediate and low power) are overcome. The input series-connection type auxiliary power supply comprises an integrated transformer T, a primary side of the integrated transformer T is provided with N channels of input circuit units with the same structures, a secondary side of the integrated transformer T is provided with n channels of output circuit units in mutual electrical isolation, and the integrated transformer T is provided with N sets of primary windings, n sets of secondary windings, N sets of magnetic resetting windings or one set of magnetic resetting winding. In the condition of not increasing any extra input voltage-sharing control link, natural voltage sharing input by various series connection circuits can be realized by employing the coupling effect of various primary windings of the integrated transformer.

Description

technical field [0001] The invention belongs to the field of power electronics technology and switching power supply technology. Background technique [0002] With the development of the national economy, there are more and more types of electrical equipment, and the input voltage levels of their power supplies are also different. At present, various high-voltage input occasions are gradually increasing. Due to the limitation of device voltage levels and other factors, how to effectively reduce the voltage stress of each switching device has always been a difficult point in the design process of high-voltage converters. There are usually three methods to reduce the voltage stress of switching devices in high-voltage converters: (1) use multiple switching tubes in series directly to replace a single switching tube; (2) use multi-level technology to reduce the actual voltage value of each switching tube; (3) Multiple circuits are connected in series on the input side to share...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02M3/335H01F30/04H01F27/30H01F41/06
CPCH02M3/3353H02M3/33561H01F27/306H01F30/04H01F41/06H02M1/0074Y02B70/10
Inventor 孟涛王中鲜宋义林
Owner HEILONGJIANG UNIV