CN100553086C - Power conversion device, inverter X-ray high voltage device, X-ray fluoroscopy camera device, X-ray CT device, MRI device - Google Patents
Power conversion device, inverter X-ray high voltage device, X-ray fluoroscopy camera device, X-ray CT device, MRI device Download PDFInfo
- Publication number
- CN100553086C CN100553086C CNB2005800082918A CN200580008291A CN100553086C CN 100553086 C CN100553086 C CN 100553086C CN B2005800082918 A CNB2005800082918 A CN B2005800082918A CN 200580008291 A CN200580008291 A CN 200580008291A CN 100553086 C CN100553086 C CN 100553086C
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- 238000006243 chemical reaction Methods 0.000 title claims abstract description 9
- 238000002594 fluoroscopy Methods 0.000 title 1
- 239000003990 capacitor Substances 0.000 claims abstract description 131
- 230000006866 deterioration Effects 0.000 claims abstract description 70
- 238000003860 storage Methods 0.000 claims abstract description 14
- 238000007599 discharging Methods 0.000 claims abstract 5
- 230000009471 action Effects 0.000 claims description 17
- 230000007423 decrease Effects 0.000 claims description 8
- 230000005855 radiation Effects 0.000 claims description 5
- 230000003068 static effect Effects 0.000 claims description 3
- 238000009434 installation Methods 0.000 claims description 2
- 238000002059 diagnostic imaging Methods 0.000 abstract description 8
- 238000009499 grossing Methods 0.000 abstract description 5
- 238000002595 magnetic resonance imaging Methods 0.000 description 17
- 238000012544 monitoring process Methods 0.000 description 13
- 238000010586 diagram Methods 0.000 description 9
- 230000006870 function Effects 0.000 description 8
- 238000000034 method Methods 0.000 description 6
- 238000003745 diagnosis Methods 0.000 description 5
- 238000003384 imaging method Methods 0.000 description 4
- 238000001514 detection method Methods 0.000 description 3
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Images
Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M1/00—Details of apparatus for conversion
- H02M1/32—Means for protecting converters other than automatic disconnection
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R33/00—Arrangements or instruments for measuring magnetic variables
- G01R33/20—Arrangements or instruments for measuring magnetic variables involving magnetic resonance
- G01R33/28—Details of apparatus provided for in groups G01R33/44 - G01R33/64
- G01R33/38—Systems for generation, homogenisation or stabilisation of the main or gradient magnetic field
- G01R33/385—Systems for generation, homogenisation or stabilisation of the main or gradient magnetic field using gradient magnetic field coils
- G01R33/3852—Gradient amplifiers; means for controlling the application of a gradient magnetic field to the sample, e.g. a gradient signal synthesizer
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M5/00—Conversion of AC power input into AC power output, e.g. for change of voltage, for change of frequency, for change of number of phases
- H02M5/40—Conversion of AC power input into AC power output, e.g. for change of voltage, for change of frequency, for change of number of phases with intermediate conversion into DC
- H02M5/42—Conversion of AC power input into AC power output, e.g. for change of voltage, for change of frequency, for change of number of phases with intermediate conversion into DC by static converters
- H02M5/44—Conversion of AC power input into AC power output, e.g. for change of voltage, for change of frequency, for change of number of phases with intermediate conversion into DC by static converters using discharge tubes or semiconductor devices to convert the intermediate DC into AC
- H02M5/453—Conversion of AC power input into AC power output, e.g. for change of voltage, for change of frequency, for change of number of phases with intermediate conversion into DC by static converters using discharge tubes or semiconductor devices to convert the intermediate DC into AC using devices of a triode or transistor type requiring continuous application of a control signal
- H02M5/458—Conversion of AC power input into AC power output, e.g. for change of voltage, for change of frequency, for change of number of phases with intermediate conversion into DC by static converters using discharge tubes or semiconductor devices to convert the intermediate DC into AC using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Physics & Mathematics (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- General Physics & Mathematics (AREA)
- Magnetic Resonance Imaging Apparatus (AREA)
- X-Ray Techniques (AREA)
- Power Conversion In General (AREA)
Abstract
本发明的电力变换装置具有:将工业交流电压整流为直流电压的变换器;使直流电压平滑的电容器;将平滑了的直流电压变换成预定频率的交流电压的逆变器;在每次使用电力变换装置时测量上述电容器的充放电特性的测量单元;事先通过上述测量单元测量初始状态下上述电容器的充放电特性、并存储测量出的特性的存储单元;对由测量单元在上述每次使用时测量出的充放电特性和由上述存储单元存储的初始状态下的充放电特性进行比较的比较单元;根据比较结果判断上述电容器的劣化状态的电容器劣化判断单元;和通知电容器劣化状态的通知单元。由此,可以防止伴随电容器劣化的故障,因此作为向医用图像诊断装置提供的稳定电源可确保其高可靠性。
The power conversion device of the present invention has: a converter for rectifying an industrial AC voltage into a DC voltage; a capacitor for smoothing the DC voltage; an inverter for converting the smoothed DC voltage into an AC voltage of a predetermined frequency; A measuring unit for measuring the charging and discharging characteristics of the above-mentioned capacitor when changing the device; a storage unit for measuring the charging and discharging characteristics of the above-mentioned capacitor in the initial state through the above-mentioned measuring unit in advance, and storing the measured characteristics; a comparing unit for comparing the measured charging and discharging characteristics with the charging and discharging characteristics in the initial state stored by the storage unit; a capacitor deterioration judging unit for judging the deterioration state of the capacitor based on the comparison result; and a notification unit for notifying the deterioration state of the capacitor. As a result, failures associated with deterioration of the capacitor can be prevented, and thus high reliability can be ensured as a stable power supply for medical imaging diagnostic equipment.
Description
Claims (16)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2004072038 | 2004-03-15 | ||
JP072038/2004 | 2004-03-15 |
Publications (2)
Publication Number | Publication Date |
---|---|
CN1930766A CN1930766A (en) | 2007-03-14 |
CN100553086C true CN100553086C (en) | 2009-10-21 |
Family
ID=34975917
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CNB2005800082918A Expired - Fee Related CN100553086C (en) | 2004-03-15 | 2005-03-10 | Power conversion device, inverter X-ray high voltage device, X-ray fluoroscopy camera device, X-ray CT device, MRI device |
Country Status (3)
Country | Link |
---|---|
JP (1) | JP4526130B2 (en) |
CN (1) | CN100553086C (en) |
WO (1) | WO2005088814A1 (en) |
Families Citing this family (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102340147A (en) * | 2011-08-12 | 2012-02-01 | 东华大学 | A Method of Weakening the Impact of CT Starting on Power Grid |
EP2568589B1 (en) * | 2011-09-08 | 2013-11-13 | ABB Technology AG | Multilevel converter comprising an active AC-DC converter and a resonant DC-DC converter and a control method for operating a multilevel converter |
JP6472592B2 (en) * | 2012-04-18 | 2019-02-20 | キヤノンメディカルシステムズ株式会社 | Magnetic resonance imaging apparatus and magnetic resonance imaging method |
CN104904322B (en) * | 2013-01-10 | 2017-03-15 | 东芝医疗系统株式会社 | X-ray computed tomograohy apparatus and X-ray generator |
JP6006670B2 (en) * | 2013-04-04 | 2016-10-12 | 日本電信電話株式会社 | Information communication terminal device degradation status judgment system |
JP5931148B2 (en) | 2014-09-10 | 2016-06-08 | ファナック株式会社 | PWM rectifier with capacitance calculator |
CN109642918B (en) * | 2016-08-24 | 2021-03-09 | 东芝三菱电机产业系统株式会社 | Power-on evaluation test device of input filter for pulse width modulation converter |
JP6884029B2 (en) * | 2017-05-09 | 2021-06-09 | 株式会社日立製作所 | Power converter and diagnostic method of power converter |
WO2019126062A1 (en) * | 2017-12-20 | 2019-06-27 | Dean Craig S | Digital high voltage power supply |
CN110579720B (en) * | 2018-06-08 | 2022-08-30 | 台达电子工业股份有限公司 | Power supply monitor |
JP6690842B1 (en) * | 2019-01-15 | 2020-04-28 | 東芝エレベータ株式会社 | Elevator main circuit diagnostic device |
CN109900461B (en) * | 2019-02-27 | 2020-12-01 | 东软医疗系统股份有限公司 | Method and device for testing safety of CT rotating plate |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2535543B2 (en) * | 1987-06-27 | 1996-09-18 | シャープ株式会社 | Digital IQ demodulation system |
JP3324239B2 (en) * | 1993-12-01 | 2002-09-17 | 富士電機株式会社 | Inverter device |
JP3200307B2 (en) * | 1994-10-26 | 2001-08-20 | リズム時計工業株式会社 | Power supply life monitoring device for surveillance camera and notification method of power supply maintenance |
JPH105189A (en) * | 1996-06-25 | 1998-01-13 | Hitachi Medical Corp | Power power unit for magnetic resonance imaging device |
JP4318779B2 (en) * | 1999-03-03 | 2009-08-26 | 株式会社日立メディコ | Inverter X-ray high voltage device |
JP2002165357A (en) * | 2000-11-27 | 2002-06-07 | Canon Inc | Power converter and its control method, and power generating system |
JP2003070185A (en) * | 2001-08-28 | 2003-03-07 | Toshiba Corp | Power converter monitor |
JP2003079132A (en) * | 2001-08-31 | 2003-03-14 | Hitachi Kokusai Electric Inc | Electronic equipment |
-
2005
- 2005-03-10 CN CNB2005800082918A patent/CN100553086C/en not_active Expired - Fee Related
- 2005-03-10 JP JP2006510974A patent/JP4526130B2/en not_active Expired - Fee Related
- 2005-03-10 WO PCT/JP2005/004172 patent/WO2005088814A1/en active Application Filing
Also Published As
Publication number | Publication date |
---|---|
CN1930766A (en) | 2007-03-14 |
JP4526130B2 (en) | 2010-08-18 |
JPWO2005088814A1 (en) | 2008-01-31 |
WO2005088814A1 (en) | 2005-09-22 |
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Effective date of registration: 20170307 Address after: Tokyo, Japan, Japan Patentee after: Hitachi Ltd. Address before: Tokyo, Japan Patentee before: Hitachi Medical Corporation |
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