High power high voltage generator

A high-voltage generator, high-power technology, applied in X-ray equipment, electrical components, etc., can solve the problems of difficult 1ms exposure function, slow open-loop response speed, low operating frequency, etc. Heat dissipation method, the effect of less heat generation

Active Publication Date: 2012-11-21
SHENYANG NEUSOFT MEDICAL SYST CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The reason is that the operating frequency is low, which leads to the inherently slow open-loop response speed of the high volta

Method used

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Embodiment Construction

[0024] Such as figure 1 As shown, the high-power high-voltage generator of the present invention includes: a main loop and a control part, wherein the main loop uses IGBT (Insulated Gate Bipolar Transistor) Bipolar transistor) As The inverter module forms a full-bridge inverter circuit. The output terminal of the full-bridge inverter circuit is connected to the resonance circuit and the step-up transformer to output high voltage; the control part includes KV double-loop regulating circuit, phase shift controller, CPLD (Complex Programmable Logic Device) Programming logic device) and IGBT drive and protection circuit. The input terminal of the KV double-loop regulating circuit receives the KV given value, the current feedback signal and voltage feedback signal of the main loop, and the output terminal is connected to the CPLD through the phase shift controller, and the output of the CPLD The signal is sent to the gate of each IGBT in the main loop through the IGBT drive and pro...

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PUM

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Abstract

The invention relates to a high power high voltage generator which comprises a main circuit and a control portion. The main circuit adopts insulated gate bipolar translators (IGBTs) as an inversion module to form a full bridge inversion circuit. The output end of the full bridge inversion circuit is connected with a resonant circuit and a booster transformer to output high voltage. The control portion comprises a kilovolt (KV) double-ring adjusting circuit, a phase shift controller, a complex programmable logic device (CPLD) and an IGBT drive and protection circuit. The input end of the KV double-ring adjusting circuit receives KV feeding value and current feedback signals and voltage feedback signals of the main circuit, the output end of the KV double-ring adjusting circuit is connected with the CPLD through the phase shift controller, and output signals of the CPLD are transferred to grid electrodes of each IGBT in the main circuit through the IGBT drive and protection circuit. The high power high voltage generator improves inversion reliability, simultaneously reduces product cost, reduces the radiating mode, prolongs service life of the IGBT, can quickly build KV output and maintains high accuracy.

Description

Technical field [0001] The invention relates to a high-power high-voltage generator used in X-ray equipment, in particular to a high-power high-voltage generator using IGBT low switching loss inverter technology. Background technique [0002] At present, equipment that uses X-rays, such as industrial flaw detection equipment, security inspection equipment, CT machines and X-ray machines, needs to have a high-voltage generator with high power, small size and weight, low heat dissipation, high reliability, and low price. Features. [0003] With the continuous improvement of the performance of the application of X-ray equipment, such as the number of layers scanned by CT machines, the requirements for high-voltage generators are gradually increasing. The so-called high power should meet the requirements of the latest CT multi-slice scanning; the small size and weight should meet the requirements of convenient installation and operation on the CT rack; less heat dissipation, which sho...

Claims

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Application Information

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IPC IPC(8): H05G1/30
Inventor 赵金铭王国超吴维荣
Owner SHENYANG NEUSOFT MEDICAL SYST CO LTD
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