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High-voltage generator rectifying device, high-voltage generator and medical equipment

A high-voltage generator and rectifier technology, which is used in output power conversion devices, high-efficiency power electronic conversion, conversion of AC power input to AC power output, etc.

Inactive Publication Date: 2020-04-28
SHANGHAI UNITED IMAGING HEALTHCARE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In the current existing technology, most of the high-power rectifiers are contactors plus uncontrolled rectifier bridges, such as figure 1 As shown, this type of rectifier needs an additional soft start device to realize the soft start of the high power rectifier

Method used

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  • High-voltage generator rectifying device, high-voltage generator and medical equipment
  • High-voltage generator rectifying device, high-voltage generator and medical equipment
  • High-voltage generator rectifying device, high-voltage generator and medical equipment

Examples

Experimental program
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Effect test

no. 1 example

[0050] The first embodiment, such as image 3 As shown, a high-voltage generator rectification device, wherein the three AC potentials of the three-phase power supply are respectively connected to the rectification device through the AC_A input port, the AC_B input port and the AC_C input port. The AC_A input port is connected to the DC power output positive pole through the inductor L1 and the thyristor T1; the AC_A input port is connected to the DC power output negative pole through the inductor L1 and the thyristor T2. A capacitor C1 and a capacitor C2 are connected between the positive output pole of the DC power supply and the negative output pole of the DC power supply. The AC_A input port is connected to the connection point of the capacitor C1 and the capacitor C2 through the IGBT Q1 and the diode D21; the AC_A input port is connected to the connection point of the capacitor C1 and the capacitor C2 through the IGBT Q2 and the diode D22. The AC_B input port is connecte...

no. 2 example

[0056] Second embodiment, such as Figure 9 As shown, a high-voltage generator rectification device, wherein the three AC potentials of the three-phase power supply are respectively connected to the rectification device through the AC_A input port, the AC_B input port and the AC_C input port. The AC_A input port is connected to the DC power output positive pole through the inductor L1 and the thyristor T1; the AC_A input port is connected to the DC power output negative pole through the inductor L1 and the thyristor T2. A capacitor C1 and a capacitor C2 are connected between the positive output pole of the DC power supply and the negative output pole of the DC power supply. The AC_A input port is connected to the connection point of the capacitor C1 and the capacitor C2 through two reversely connected IGBTs Q1 and IGBT Q2 . The AC_B input port is connected to the DC power output positive pole through the inductor L2 and the thyristor T3; the AC_B input port is connected to th...

no. 3 example

[0058] The third embodiment, such as Figure 10 As shown, a high-voltage generator rectification device, wherein the three AC potentials of the three-phase power supply are respectively connected to the rectification device through the AC_A input port, the AC_B input port and the AC_C input port. The AC_A input port is connected to the DC power output positive pole through the inductor L1, the IGBT Q1 and the thyristor T1; the AC_A input port is connected to the DC power output negative pole through the inductor L1, the IGBT Q2 and the thyristor T3. A capacitor C1 and a capacitor C2 are connected between the positive output pole of the DC power supply and the negative output pole of the DC power supply. The cathode of the diode D1 is connected to the connection point of the IGBT Q1 and the thyristor T1; the anode of the diode D1 is connected to the connection point of the capacitor C1 and the capacitor C2. The anode of the diode D2 is connected to the connection point of the ...

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Abstract

The invention relates to a high-voltage generator rectifying device, a high-voltage generator and medical equipment. The high-voltage generator rectifying device comprises a rectifying circuit and a voltage regulating circuit, wherein the input end of the rectifying circuit is connected with a three-phase power supply, and the conduction angle of the rectifying circuit is adjusted to enable the direct-current voltage output by the rectifying circuit to rise slowly until the direct-current voltage is stable; the input end of the voltage regulating circuit is connected with the three-phase powersupply, and the output end of the voltage regulating circuit is connected with the output end of the rectifying circuit and used for regulating the direct-current voltage output by the rectifying circuit. By adjusting the conduction angle of the rectifying circuit, the slow rise of the direct-current voltage is realized, i.e., the soft start function is realized, and by arranging the voltage regulating circuit, the voltage input into the inverter is adjusted, so that the loss of the inverter is reduced.

Description

technical field [0001] The present application relates to the technical field of medical equipment, in particular to a rectifying device for a high-voltage generator, a high-voltage generator and medical equipment. Background technique [0002] Computed Tomography (CT), which uses precisely collimated X-ray beams, γ-rays, ultrasonic waves, etc., together with highly sensitive detectors to conduct cross-sectional scans one after another around a certain part of the human body, has The scan time is fast, the image is clear, etc., and it can be used for the examination of various diseases. [0003] The high-voltage generator is used on the rack of CT equipment. The high-voltage generator is used to generate high voltage with a certain frequency. The high-voltage generator is usually composed of a rectifier circuit, an inverter and a high-voltage transformer connected in sequence. The higher the input voltage of the inverter, the higher the input voltage. The smaller the output...

Claims

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Application Information

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IPC IPC(8): H02M7/219H02M1/36H02M5/458
CPCH02M1/36H02M5/4585H02M7/219H02M1/0054Y02B70/10
Inventor 董斌祝国平柳玉锋
Owner SHANGHAI UNITED IMAGING HEALTHCARE
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