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Distribution network terminal power supply device

A technology of power supply device and distribution network terminal, which is applied in the direction of output power conversion device, electrical components, regulating electrical variables, etc. The effect of working hours

Active Publication Date: 2013-04-10
深圳航天工业技术研究院有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The technical problem to be solved by the present invention is to provide a distribution network terminal power supply device that adopts digital control and reduces volume in view of the shortcomings of the existing analog control that lead to complex design and difficult debugging.

Method used

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Experimental program
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Effect test

Embodiment 1

[0050] see figure 1 , figure 1 It is a schematic structural diagram of the first embodiment of the distribution network terminal power supply device of the present invention, as shown in figure 1 As shown, the device includes a power supply filter circuit 101, a high-frequency full-bridge inverter circuit 102, a high-frequency transformer 103, a rectification filter circuit 104, a sampling circuit 105 connected in sequence, and respectively connected with the high-frequency full-bridge inverter circuit 102 and the sampling circuit. For the digital signal processor 106 connected to the circuit 105, it should be noted that since the magnetic flux of the high-frequency transformer 103 is proportional to the cross-sectional area of ​​the iron core and the power supply operating frequency of the distribution network terminal power supply device, the digital signal processor 106 is used to improve the power supply operation. The frequency can reduce the cross-sectional area require...

Embodiment 2

[0067] Please refer to Figure 6 , Figure 6 It is a schematic structural diagram of the second embodiment of the distribution network terminal power supply device of the present invention, as shown in Figure 6 As shown, the device also includes a backup power supply 107 connected to the sampling circuit 105 and a power control circuit 108 connected to the backup power supply 107. It should be noted that the power filter circuit 101, high-frequency full-bridge The inverter circuit 102, the high frequency transformer 103, the rectification filter circuit 104, the sampling circuit 105 and the digital signal processor 106 are the same as the power supply filter circuit 101, the high frequency full bridge inverter circuit 102, the high frequency transformer 103 and the rectification filter circuit in the first embodiment 104, the sampling circuit 105 and the digital signal processor 106 have the same effect, and the following specifically introduces the effects of the backup pow...

Embodiment 3

[0080] Please refer to Figure 8 , Figure 8 It is a schematic structural diagram of the third embodiment of the distribution network terminal power supply device of the present invention, as shown in Figure 8 As shown, the device also includes a protection circuit 109 and a power state indicating circuit 110 respectively connected to the digital processor 106. It should be noted that the power filter circuit 101, the high-frequency full-bridge inverter circuit 102, the High-frequency transformer 103, rectification and filtering circuit 104, sampling circuit 105, digital signal processor 106, backup power supply 107 and power supply control circuit 108 are the same as the power supply filtering circuit 101, high-frequency full-bridge inverter circuit 102, and high-frequency transformer 103 in Embodiment 2 , the rectification and filtering circuit 104, the sampling circuit 105, the digital signal processor 106, the backup power supply 107 and the power control circuit 108 hav...

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PUM

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Abstract

The invention discloses a distribution network terminal power supply device which comprises a power supply filter circuit, a high-frequency full-bridge inversion circuit, a high-frequency transformer, a rectification filter circuit, a sampling circuit and a digital signal processor, wherein the power supply filter circuit, the high-frequency full-bridge inversion circuit, the high-frequency transformer, the rectification filter circuit, the sampling circuit and the digital signal processor are connected in sequence, and the digital signal processor is connected with the high-frequency full-bridge inversion circuit and the sampling circuit. An impulse waveform-shaped duty ratio which is output by the high-frequency full-bridge inversion circuit is changed by the digital signal processor to control output of sampling values, safety of power supply control is improved, and size of the distribution network terminal power supply device is reduced. In addition, a reserve power supply is accessed to meet use requirements of a power supply under various installing environment and prolong working time of the distribution network terminal power supply device when power is off. Therefore, the distribution network terminal power supply device supplies power for a distribution network terminal, adapts to wide input power supply range, and is strong in power grid adaptability.

Description

technical field [0001] The invention relates to the field of power supply control, in particular to a distribution network terminal power supply device. Background technique [0002] As we all know, the distribution network is directly oriented to users, which is a key link to ensure the quality of power supply, improve the efficiency of power grid operation, and innovate user services. Since distribution network terminals are installed outdoors, switching stations or relatively remote places, the power supply environment is complex and the power supply methods vary greatly. Therefore, the power supply methods of distribution network terminals include voltage transformer power supply, AC power supply and DC power supply. The terminal power supply has a wide input power range and strong grid adaptability. The existing distribution network terminal power supply generally adopts an analog control method. However, the design of the analog circuit is complex, the design purpose i...

Claims

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Application Information

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IPC IPC(8): H02M3/335
Inventor 肖远超刘海涛
Owner 深圳航天工业技术研究院有限公司
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