Continuous adjustable power supply with variable structure and constant power

A constant power power supply and variable structure technology, which is applied in the direction of adjusting electrical variables, output power conversion devices, converting DC power input to DC power output, etc., to achieve good steady-state and dynamic performance, high efficiency, good voltage regulation and The effect of load regulation

Inactive Publication Date: 2012-07-25
唐山电动车研发与检测有限公司
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  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The present invention aims to solve the above-mentioned problems existing in the existing switching power supply, and provides a continuo

Method used

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  • Continuous adjustable power supply with variable structure and constant power
  • Continuous adjustable power supply with variable structure and constant power
  • Continuous adjustable power supply with variable structure and constant power

Examples

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Embodiment Construction

[0012] The present invention will be further described below in conjunction with embodiment.

[0013] see figure 1 , a continuously adjustable variable structure constant power supply, which consists of an isolated full-bridge DC converter FBC, a high-frequency transformer with one winding on the primary side and two windings on the secondary side, two sets of diode rectifier bridges FBR1 and FBR2, and two inductance values Equal filter inductance L 1 and L 2 , a filter capacitor C, a control switch S and two bypass diodes D 1 and D 2 The primary side of the high-frequency transformer is connected to the full-bridge DC converter FBC, the two windings of the secondary side are respectively connected to the input terminals of the diode rectifier bridges FBR1 and FBR2, and the positive terminals of the two diode rectifier bridges FBR1 and FBR2 are respectively connected to the Two filter inductors L 1 and L 2 One end of the connection, two filter inductors L 1 and L 2 The...

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PUM

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Abstract

The invention relates to a direct current switch power supply, in particular relates to a continuous adjustable power supply with a variable structure and constant power, comprising a full-bridge direct current converter and a high-frequency transformer, wherein a primary side of the high-frequency transformer is connected on the full-bridge direct current converter, a secondary side of the high-frequency transformer comprises two groups of diode rectification bridges, two filtering inductors with equal inductance values and one output filtering capacitor, and a control switch and two bypath diodes are connected between each filtering capacitor and the filtering capacitor. According to the continuous adjustable power supply with the variable structure and the constant power, disclosed by the invention, serial-connection operation during high-voltage output is realized, parallel-connection operation during high-current output is realized, and the adjusting range of output voltage can be enlarged; and therefore, a good stable state and dynamic properties are realized, and a constant-power output function is realized; and the excellent voltage regulating rate and the excellent load regulating rate are realized, the output voltage ripple coefficient is relative small, and the relative high efficiency is realized within a full output voltage range.

Description

[0001] Technical field: [0002] The invention relates to a DC switching power supply, in particular to a continuously adjustable variable-structure constant power supply. Background technique: [0003] At present, switching power supplies have entered various electronic and electrical equipment fields one after another, and switching power supplies have been widely used in program-controlled switches, space technology, computers, communications, radar, household appliances, electronic testing equipment power supplies, and control equipment power supplies. The known switching power supply technology mainly adopts: a hybrid modulation method combining frequency modulation and width modulation, a method of changing the transformation ratio of a transformer, and a method of phase-staggered control. In the frequency modulation and width modulation control method, the frequency needs to be changed, which will bring more difficulty to the design of the transformer and filter; in ...

Claims

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Application Information

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IPC IPC(8): H02M3/335H02M3/156
Inventor 熊希森刘军李国洪张彪李勤刘玉观李鑫
Owner 唐山电动车研发与检测有限公司
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