A high-voltage power supply shunt current sharing system

A high-voltage power supply and current system technology, applied in the direction of electrical components, electromechanical devices, electric components, etc., to achieve the effect of better current sharing accuracy

Inactive Publication Date: 2019-01-11
BEIJING INST OF RADIO MEASUREMENT
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] An object of the present invention is to provide a high-voltage power supply parallel current sharing system to solve the problem of current sharing when multiple high-voltage power supplies are connected in parallel

Method used

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  • A high-voltage power supply shunt current sharing system
  • A high-voltage power supply shunt current sharing system

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Embodiment Construction

[0029] In order to illustrate the present invention more clearly, the present invention will be further described below in conjunction with preferred embodiments and accompanying drawings. Similar parts in the figures are denoted by the same reference numerals. Those skilled in the art should understand that the content specifically described below is illustrative rather than restrictive, and should not limit the protection scope of the present invention.

[0030] Such as figure 1 As shown, this embodiment discloses a high-voltage power supply parallel current sharing system. Wherein, the high-voltage power supply includes multiple high-voltage power supplies connected in parallel. In this embodiment, the high-voltage power supply parallel current sharing system includes multiple parallel current sharing devices connected to multiple high-voltage power supplies in one-to-one correspondence. For example, the high-voltage power supply parallel current sharing system may inclu...

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Abstract

A high-voltage power supply parallel current sharing system the high-voltage power supply comprising a plurality of high-voltage power supplies connected in parallel. The system comprises a pluralityof parallel current sharing devices one-to-one connected with a plurality of high-voltage power supplies, wherein, each parallel current sharing device comprises a parallel current sharing circuit respectively connected with a current sharing bus bar and a master / slave setting circuit, and an output voltage sampling circuit and a reference circuit connected with the parallel current sharing circuit. The master / slave setting circuit is used for setting one of the plurality of parallel current sharing devices as a master; a parallel current sharing device as a host for determining a driving signal for forming an output voltage based on a voltage reference signal supplied from a reference circuit and an output voltage sampling signal collected by the output voltage sampling circuit, and the switching frequency signal is transmitted to other parallel current sharing devices. The invention realizes parallel current sharing output of multiple high-voltage power supplies without detecting output current, and the current sharing precision is better than 10%.

Description

technical field [0001] The invention relates to the technical field of power electronics. More specifically, it relates to a high-voltage power supply parallel current sharing system. Background technique [0002] High-voltage power supplies (hereinafter referred to as power supplies) are widely used in high-energy physics, vacuum tube radar transmitters, electrostatic precipitators, sewage treatment and medical fields. The output voltage sampling signal of the high-voltage power supply is generally as high as several thousand volts to tens or even hundreds of kilovolts. When the output power of the high-voltage power supply is large (such as hundreds of kilowatts), generally multiple high-voltage power supplies are used in parallel. Because the characteristics of the power supplies running in parallel are not consistent, some power supplies may bear a large current, or even overload, while some power supplies run under light load, or even basically no-load operation. In t...

Claims

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Application Information

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IPC IPC(8): H02K9/02H03K3/57
CPCH03K3/57
Inventor 郑保磊李成祖
Owner BEIJING INST OF RADIO MEASUREMENT
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