A dual/multi-energy control method for lcc resonant high-voltage power supply

A high-voltage power supply and output voltage technology, applied in the direction of adaptive control, general control system, control/regulation system, etc., can solve the problems of increasing the damage of unnecessary rays to the shooting object, increasing the adverse effect, and slow switching speed, so as to avoid Effects of severe vibration, reduced equipment cost, and fast switching

Active Publication Date: 2022-05-10
ZHEJIANG UNIV +1
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Problems solved by technology

[0004] Therefore, a dual-energy high-voltage power supply for a dual-energy system based on a single bulb and a single power supply is very important. Dual (multiple) energy irradiation can be completed in a short time, which places extremely high requirements on the switching speed of the high-voltage power supply. Slow switching speed will not only increase the adverse effect of motion blur on the actual effect, but also increase the impact of useless rays on shooting object damage

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  • A dual/multi-energy control method for lcc resonant high-voltage power supply
  • A dual/multi-energy control method for lcc resonant high-voltage power supply
  • A dual/multi-energy control method for lcc resonant high-voltage power supply

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[0065] In order to describe the present invention more specifically, the technical solutions of the present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0066] like figure 1 As shown, the X-ray system includes at least the general controller, high-voltage power supply, and X-ray tube. Depending on the function, it may also include moving parts such as the boom, and photoelectric panel receiving parts. The required dual-energy mode output voltage is as follows: figure 2 As shown, the required multi-energy mode output voltage is as follows image 3 As shown, the following implementations are in accordance with image 3 The multi-energy mode (boost-buck hybrid) output level in the example is described as an example.

[0067] The structure and principle of the whole control circuit are as follows: Figure 4 As shown, first the converter works in the normal output mode, the output voltage changes from 0 to...

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Abstract

The invention discloses a dual / multi-function control method for an LCC resonant high-voltage power supply, which requires the power supply to output two (multiple) different voltages in one output process, and to complete the switching between different output voltage modes as quickly as possible. switch. The present invention first obtains the steady-state operating point of the target voltage mode through the look-up table method, calculates based on the trajectory control formula, and completes the above switching requirements, so that the output voltage can realize dual (multiple) energy output of a single power supply in the shortest time, and the power supply will not Voltage and current stresses occur that adversely affect the quality of the output voltage and the safety of the power supply itself.

Description

technical field [0001] The invention belongs to the technical field of power electronic control, and in particular relates to a dual / multi-energy control method of an LCC resonant high-voltage power supply. Background technique [0002] As the core component of the X-ray system, LCC resonant high-voltage power supply is widely used in medical imaging inspection, industrial non-destructive inspection, security inspection industry and other occasions. The dual (multiple) energy mode is an important function of the X-ray system. The system uses rays of different voltage levels to irradiate the same part two (multiple) times, and calculates the relevant information of the object according to the results of the two (multiple) groups of rays. Or perform imaging without relying on the accuracy of pre-specified parameters like traditional X-ray systems. This mode has been widely used in dual-energy CT, bone densitometer and material identification. [0003] In the application proce...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G05B13/02H05G1/32
CPCG05B13/024H05G1/32
Inventor 陈国柱赵钧伍梁林弘毅吴世杰
Owner ZHEJIANG UNIV
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