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Bridge type inverting power supply unit

A power supply device and bridge inverter technology, which are applied to output power conversion devices, electrical components, and irreversible DC power input into AC power output and other directions, can solve problems such as limiting the application frequency of inverter switching power supplies, etc. Achieve the effect of equal length, shortened length, and consistent conduction depth

Inactive Publication Date: 2008-02-06
SHENZHEN RILAND IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Limit the application frequency of inverter switching power supply

Method used

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  • Bridge type inverting power supply unit
  • Bridge type inverting power supply unit

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Embodiment Construction

[0013] Below in conjunction with the best embodiment shown in the accompanying drawings, it will be further described in detail.

[0014] As shown in Fig. 1 and Fig. 2, the bridge type inverter power supply device of the present invention includes a drive circuit 1, each power switching device 2 and a high-frequency power transformer 3, and the drive circuit 1 is respectively connected to each drive pulse transmission wire 4 by means of each drive pulse transmission wire 4 The switching devices are electrically connected, and the drive circuit 1 is located in the center of the area surrounded by the switching devices. The lengths of the driving pulse transmission wires 4 are equal.

[0015] As shown in Fig. 3, the device of the present invention also includes a heat dissipation shield 5, which is made of aluminum profile. The heat dissipation shield 5 is located between the drive circuit 1 and the high frequency power transformer 3 .

[0016] As shown in Figure 1, the housin...

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Abstract

The present invention relates to a bridge-type contravariant power unit, including a drive circuit, various power switch elements and a high-frequency power transformer. The drive circuit is connected with the various power switch elements respectively by means of various drive pulse transfer wires, and is arranged at the geometric centre of the space bounded by the various power switch elements symmetrical arranged. The distance between the various power switches and the geometric centre is the same. With the drive circuit arranged at the space center bounded by the various power switch elements, compared with the prior art, the technical effect of the invention is that the length of the drive pulse transfer wire between the drive circuit and the various switch elements is shortened greatly, thereby realizing an uniform length of the various drive pulse transfer wire. When the various power switch elements are on, the conductive depth is same and the withstanding voltage is well-distributed, thereby significantly improving the upper frequency limit of the power inverse transformation.

Description

technical field [0001] The invention relates to the technical field of power electronics, in particular to the drive circuit arrangement of an inverter switching power supply device. Background technique [0002] In the prior art, the driving circuits of power field effect transistor MOSFET, insulated gate bipolar transistor IGBT and other insulated gate field control semiconductor switching devices are all arranged in the space outside the inverter bridge, and the driving pulse is transmitted to the inverter bridge with twisted pair wires. Each bridge arm switching device. On the control circuit board, the driving pulse transmission wires can neither be the shortest nor equal in length. The time delay and phase difference caused by the excessively long and unequal lengths of the driving pulse transmission wires of the driving pulse can lead to uneven voltage distribution of the switching devices. Too long wires and unequal lengths send driving pulse voltages with uneven a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02M7/42H02M1/44H02M1/00
Inventor 邱光
Owner SHENZHEN RILAND IND
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