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Wide-range continuously adjustable high-voltage direct-current power supply based on magnetic flux

A high-voltage DC power supply, wide-ranging technology, applied in the conversion equipment that can be converted to DC without intermediate conversion, the conversion of irreversible AC power input into DC power output, and the conversion of irreversible DC power input into AC power output. It can solve the problems such as the limited range of output voltage of the power supply and the inability to realize continuous adjustment, so as to achieve the effect of continuous control and system safety and reliability.

Pending Publication Date: 2022-03-04
GUANGDONG FULLDE ELECTRONICS +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] When the transformer shifting + uncontrolled rectification + filtering method is adopted, affected by the shifting transformer, the output voltage range of the power supply is limited and continuous adjustment cannot be achieved
[0004] When implemented in the way of accumulating controllable modules, the voltage can be continuously adjusted in a wide range, but the designer needs to consider the problems of voltage equalization and current equalization caused by the superimposition of modules, and the power supply control belongs to the field of high-voltage control, so the stability of the equipment needs to be focus on

Method used

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  • Wide-range continuously adjustable high-voltage direct-current power supply based on magnetic flux

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Experimental program
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Effect test

Embodiment 1

[0032] Such as figure 1 As shown, the wide-range continuously adjustable high-voltage DC power supply of the present invention is mainly composed of a low-voltage magnetic flux adjustment part, a high-voltage series output part, a single-phase AC input terminal Vin, a DC output terminal Vout and a controller.

[0033] The low-voltage flux regulating part includes a flux regulating transformer Tr1 with an air gap, and its secondary side is connected with a single-phase AC output device with controllable output frequency and phase, and the single-phase AC output device is controlled by the controller to the flux regulating transformer Tr1 secondary side charging.

[0034] The high-voltage series output part includes a high-voltage transformer Tr2. The primary side of the high-voltage transformer Tr2 is connected in series with the primary side of the flux regulating transformer Tr1 and then connected across the two ends of the single-phase AC input terminal Vin. The secondary si...

Embodiment 2

[0053] Embodiment 2 is on the basis of Embodiment 1, a switch KYN1 is set, and the switch KYN1 is electrically connected to the controller and connected in series with the single-phase AC input terminal Vin, wherein the switch KYN1 can be a relay, a circuit breaker, an electric control switch, a manual switch one of them.

[0054] In this embodiment, when the program in the computer-readable storage medium is executed by the controller, the following steps implemented in the startup phase are also implemented:

[0055] Disconnect the switch KYN1 connected in series with the single-phase AC input terminal Vin, start the single-phase AC output device for pre-charging;

[0056] After the capacitor in the rectifier and filter module is fully charged, switch KYN1 on.

[0057] In this embodiment, the auxiliary power supply is used to charge the capacitor in the rectification and filtering module through the winding. After the capacitor in the rectification and filtering module is f...

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Abstract

The invention relates to a wide-range continuously adjustable high-voltage direct-current power supply based on magnetic flux. The wide-range continuously adjustable high-voltage direct-current power supply comprises a single-phase alternating-current input end Vin, a direct-current output end Vout and a controller, the secondary side of the magnetic flux adjusting transformer Tr1 is connected with a single-phase alternating current output device with controllable output frequency and phase, and the single-phase alternating current output device is controlled by the controller to charge the secondary side of the magnetic flux adjusting transformer Tr1; the primary side of the high-voltage transformer Tr2 and the primary side of the magnetic flux adjusting transformer Tr1 are connected in series and then are connected to the two ends of the single-phase alternating current input end Vin in a bridging mode, and the secondary side of the high-voltage transformer Tr2 is connected to the direct current output end Vout through a rectifying and filtering module. On the basis of adopting uncontrolled rectification superposition, continuous adjustable output in a wide range is realized by utilizing a magnetic flux conversion principle.

Description

technical field [0001] The invention relates to the field of special power supplies, in particular to a wide-range continuously adjustable high-voltage DC power supply based on magnetic flux. Background technique [0002] Most of the existing high-voltage DC power supplies are realized by transformer shifting + uncontrolled rectification + filtering, or controllable module accumulation. [0003] When using the method of transformer shifting + uncontrolled rectification + filtering, affected by the shifting transformer, the output voltage range of the power supply is limited and continuous adjustment cannot be achieved. [0004] When implemented in the way of accumulating controllable modules, the voltage can be continuously adjusted in a wide range, but the designer needs to consider the problems of voltage equalization and current equalization caused by the superimposition of modules, and the power supply control belongs to the field of high-voltage control, so the stabilit...

Claims

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Application Information

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IPC IPC(8): H02M7/10H02M5/10H02M7/48H02M7/5387H02M1/14H02M1/32
CPCH02M7/10H02M7/068H02M5/10H02M7/48H02M7/53871H02M1/14H02M1/32
Inventor 刘湘盛建科罗万里
Owner GUANGDONG FULLDE ELECTRONICS
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