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a DC converter

A technology of DC converter and switch tube, which is applied in the direction of converting DC power input to DC power output, instruments, adjusting electrical variables, etc. Topologically simple effect

Active Publication Date: 2017-03-15
江苏申铠新能源科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, in such figure 1 In the resonant switching power supply device shown, it is necessary to use an isolation transformer, which increases the cost and the actual installation area.

Method used

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Embodiment Construction

[0010] by figure 2 It can be seen that the DC converter of the present invention includes an input power supply, switch tubes S1, S2, S3, inductors L1, L2, L3, and capacitors C1, C2, C3. The positive pole of the input power Uin is connected to one end of the inductor L1, the negative pole of the input power Uin is connected to one end of the switching tube S1 and one end of the capacitor C1; the other end of the inductor L1 is connected to the other end of the switching tube S1, and the connection point is marked as connection point A; One end of the inductor L2 is connected to one end of the switching tube S2, the other end of the inductor L2 is connected to one end of the capacitor C3; the other end of the switching tube S2 is connected to one end of the switching tube S3, and the connection point is marked as connection point B; the other end of the switching tube S3 Connect one end of the inductor L3, the other end of the inductor L3 connects the other end of the capacitor...

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PUM

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Abstract

The invention discloses a DC converter, wherein a switching mode power supply is composed of an input power supply, three switch transistors, three inductors and three capacitors. The invention provides a converter topological structure. Voltage conversion is realized through a fully controlled switch device. No isolation transformer is required. Low control requirement is obtained. Furthermore the DC converter can satisfy a requirement for outputting different voltages.

Description

Technical field [0001] The invention relates to a power electronic conversion device, in particular to a DC converter. Background technique [0002] figure 1 It is a circuit diagram showing the structure of a conventional DC converter. figure 1 The switching power supply device shown in the rectified and smoothed DC voltage of the AC voltage from a commercial power source is input as the DC input voltage Uin by a method called a current resonance type switching power supply device. A switching element Q11 (first switching element) composed of a MOSFET and a switching element Q12 (second switching element) composed of a MOSFET are connected in series to both ends of the DC power supply Uin that supplies the DC input voltage Uin. A voltage resonance capacitor Cv1 is connected between the drain and source of the switching element Q12 (or between the drain and the source of the switching element Q11), and the resonance reactor Lr1 and the primary winding Np1 of the transformer T1 and...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02M3/155
Inventor 姚志垒于学华徐静阚加荣陈冲顾春雷
Owner 江苏申铠新能源科技有限公司