NL1029240C2 - Hoog-vermogen geschakelde versterker met hoge betrouwbaarheid. - Google Patents

Hoog-vermogen geschakelde versterker met hoge betrouwbaarheid. Download PDF

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Publication number
NL1029240C2
NL1029240C2 NL1029240A NL1029240A NL1029240C2 NL 1029240 C2 NL1029240 C2 NL 1029240C2 NL 1029240 A NL1029240 A NL 1029240A NL 1029240 A NL1029240 A NL 1029240A NL 1029240 C2 NL1029240 C2 NL 1029240C2
Authority
NL
Netherlands
Prior art keywords
amplifier
voltage
gradient
bridge
bridge amplifier
Prior art date
Application number
NL1029240A
Other languages
English (en)
Dutch (nl)
Other versions
NL1029240A1 (nl
Inventor
Juan Antonio Sabate
Richard S Zhang
Luis Jose Garces
Paul Michael Szczesny
Qiming Li
William Frederick Wirth
Original Assignee
Gen Electric
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Gen Electric filed Critical Gen Electric
Publication of NL1029240A1 publication Critical patent/NL1029240A1/nl
Application granted granted Critical
Publication of NL1029240C2 publication Critical patent/NL1029240C2/nl

Links

Classifications

    • 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
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F1/00—Details of amplifiers with only discharge tubes, only semiconductor devices or only unspecified devices as amplifying elements
    • H03F1/02—Modifications of amplifiers to raise the efficiency, e.g. gliding Class A stages, use of an auxiliary oscillation
    • H03F1/0205—Modifications of amplifiers to raise the efficiency, e.g. gliding Class A stages, use of an auxiliary oscillation in transistor amplifiers
    • H03F1/0277—Selecting one or more amplifiers from a plurality of amplifiers
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F3/00—Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements
    • H03F3/20—Power amplifiers, e.g. Class B amplifiers, Class C amplifiers
    • H03F3/21—Power amplifiers, e.g. Class B amplifiers, Class C amplifiers with semiconductor devices only
    • H03F3/211—Power amplifiers, e.g. Class B amplifiers, Class C amplifiers with semiconductor devices only using a combination of several amplifiers
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F3/00—Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements
    • H03F3/20—Power amplifiers, e.g. Class B amplifiers, Class C amplifiers
    • H03F3/21—Power amplifiers, e.g. Class B amplifiers, Class C amplifiers with semiconductor devices only
    • H03F3/217—Class D power amplifiers; Switching amplifiers
    • H03F3/2173—Class D power amplifiers; Switching amplifiers of the bridge type
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F3/00—Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements
    • H03F3/20—Power amplifiers, e.g. Class B amplifiers, Class C amplifiers
    • H03F3/21—Power amplifiers, e.g. Class B amplifiers, Class C amplifiers with semiconductor devices only
    • H03F3/217—Class D power amplifiers; Switching amplifiers
    • H03F3/2178—Class D power amplifiers; Switching amplifiers using more than one switch or switching amplifier in parallel or in series
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F3/00—Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements
    • H03F3/72—Gated amplifiers, i.e. amplifiers which are rendered operative or inoperative by means of a control signal

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)
  • Amplifiers (AREA)
NL1029240A 2004-06-15 2005-06-13 Hoog-vermogen geschakelde versterker met hoge betrouwbaarheid. NL1029240C2 (nl)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US10/867,598 US7116166B2 (en) 2004-06-15 2004-06-15 High fidelity, high power switched amplifier
US86759804 2004-06-15

Publications (2)

Publication Number Publication Date
NL1029240A1 NL1029240A1 (nl) 2005-12-19
NL1029240C2 true NL1029240C2 (nl) 2006-07-11

Family

ID=35459875

Family Applications (1)

Application Number Title Priority Date Filing Date
NL1029240A NL1029240C2 (nl) 2004-06-15 2005-06-13 Hoog-vermogen geschakelde versterker met hoge betrouwbaarheid.

Country Status (4)

Country Link
US (1) US7116166B2 (cg-RX-API-DMAC7.html)
JP (1) JP4732021B2 (cg-RX-API-DMAC7.html)
DE (1) DE102005027628A1 (cg-RX-API-DMAC7.html)
NL (1) NL1029240C2 (cg-RX-API-DMAC7.html)

Families Citing this family (26)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7253625B2 (en) * 2003-02-03 2007-08-07 Koninklijke Philips Electronics N.V. Precision gradient amplifier with multiple output voltage levels
GB2441572B (en) * 2006-09-05 2009-01-28 Stream Technology Ltd M Switching amplifier
EP2099127B1 (de) * 2008-03-05 2014-08-13 Ampegon AG Hochspannungsmodulator mit Transformator
EP2304455B1 (en) 2008-07-11 2019-03-06 Koninklijke Philips N.V. Digital amplifier with feedforward and feedback control
EP2234237A1 (en) * 2009-03-26 2010-09-29 ABB Research Ltd. Method for controlling single-phase DC/AC converters and converter arrangement
EP2234263A1 (en) 2009-03-27 2010-09-29 Koninklijke Philips Electronics N.V. A power supply, method, and computer program product for supplying electrical power to a load
US8760164B2 (en) * 2010-01-29 2014-06-24 General Electric Company Magnetic resonant imaging gradient driver architecture
EP2583114B1 (en) * 2010-06-17 2015-11-04 Koninklijke Philips N.V. Gradient coil power supply and magnetic resonance imaging system
DE112011104465T5 (de) 2010-12-20 2014-02-06 Philips Intellectual Property & Standards Gmbh Verfahren und Digitalverstärkersystem zum Betrieb eines MRI-Gradientenmagnetsystems
US8502539B2 (en) 2011-03-31 2013-08-06 General Electric Company Gradient amplifier system
US9013187B2 (en) * 2011-06-16 2015-04-21 General Electric Company Balanced mixer for MRI system with a hub, intermediate frequency, oscillator, and pre-amp circuitry coupled together
WO2013046099A1 (en) 2011-09-27 2013-04-04 Koninklijke Philips Electronics N.V. Gradient amplifier with compensation for dead time and forward voltage
CN103176150B (zh) 2011-12-21 2015-08-26 通用电气公司 梯度放大器系统及其控制方法
CN103222867B (zh) * 2012-01-31 2016-12-07 Ge医疗系统环球技术有限公司 体部/头部线圈切换方法、功率放大器组件和mri系统
RU2626026C2 (ru) * 2012-07-25 2017-07-21 Конинклейке Филипс Н.В. Градиентный усилитель mri, работающий при различных скоростях нарастания
US9389288B2 (en) 2012-09-14 2016-07-12 General Electric Company System and method for maintaining soft switching condition in a gradient coil driver circuit
KR101491658B1 (ko) * 2013-04-25 2015-02-09 주식회사 피에스텍 스위칭 증폭기 장치 및 그 제어 방법
NL2011648C2 (en) 2013-10-18 2015-04-23 Prodrive B V Switched power converter.
EP2910965A1 (en) * 2014-02-19 2015-08-26 Albert-Ludwigs-Universität Freiburg Multi-channel switching system for MRI matrix gradient coils
DE102015214925B4 (de) * 2014-09-11 2019-06-06 Siemens Healthcare Gmbh Verfahren zum Betrieb einer Magnetresonanzeinrichtung und Magnetresonanzeinrichtung
CN105591537B (zh) * 2014-10-28 2019-02-22 通用电气公司 梯度放大器、开关放大器及其操作方法
US10033263B2 (en) * 2015-06-26 2018-07-24 Board Of Trustees Of Michigan State University System and method for optimizing fundamental frequency modulation for a cascaded multilevel inverter
US9807863B1 (en) * 2016-06-09 2017-10-31 Advanced Energy Industries, Inc. Switching amplifier
CN108173417B (zh) * 2018-01-11 2020-06-16 台达电子企业管理（上海）有限公司 梯度电源驱动级电路、梯度电源系统及其控制方法
EP3550319A1 (en) * 2018-04-05 2019-10-09 Koninklijke Philips N.V. Emulation mode for mri
CN109001659A (zh) * 2018-06-06 2018-12-14 上海东软医疗科技有限公司 一种梯度放大器及核磁共振成像设备

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19812069A1 (de) * 1998-03-19 1999-09-30 Siemens Ag Leistungsverstärker und Verfahren zum Erzeugen von Steuersignalen für einen Leistungsverstärker
EP0987818A2 (en) * 1998-09-04 2000-03-22 General Electric Company Switching amplifier for generating continuous arbitrary waveforms for magnetic resonance imaging coils

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3581212A (en) * 1969-07-31 1971-05-25 Gen Electric Fast response stepped-wave switching power converter circuit
US5270657A (en) * 1992-03-23 1993-12-14 General Electric Company Split gradient amplifier for an MRI system
JPH07313489A (ja) * 1994-05-30 1995-12-05 Toshiba Corp 傾斜磁場電源装置
US5663647A (en) * 1995-12-29 1997-09-02 General Electric Company Switching gradient amplifier with adjustable DC bus voltage
DE19709767C1 (de) * 1997-03-10 1998-04-23 Siemens Ag Verfahren zum Ansteuern mehrerer Schaltendstufen, Ansteuereinrichtung und Leistungsverstärker
JPH10314140A (ja) * 1997-05-15 1998-12-02 Hitachi Medical Corp 磁気共鳴イメージング装置
DE19824767C2 (de) * 1998-06-03 2000-05-18 Siemens Ag Verfahren zum Erzeugen von Steuersignalen für einen Leistungsverstärker und Leistungsverstärker
US6172558B1 (en) * 1999-09-02 2001-01-09 Siemens Aktiengesellschaft Switching amplifier and method for operating same
US6166602A (en) * 1999-09-27 2000-12-26 General Electric Company High-efficiency switching power amplifier
JP3499235B1 (ja) * 2002-08-28 2004-02-23 株式会社フライングモール スイッチング回路及びディジタル電力増幅器

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19812069A1 (de) * 1998-03-19 1999-09-30 Siemens Ag Leistungsverstärker und Verfahren zum Erzeugen von Steuersignalen für einen Leistungsverstärker
EP0987818A2 (en) * 1998-09-04 2000-03-22 General Electric Company Switching amplifier for generating continuous arbitrary waveforms for magnetic resonance imaging coils

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
SABATE J ET AL: "High-power high-fidelity switching amplifier driving gradient coils for MRI systems", POWER ELECTRONICS SPECIALISTS CONFERENCE, 2004. PESC 04. 2004 IEEE 35TH ANNUAL AACHEN, GERMANY 20-25 JUNE 2004, PISCATAWAY, NJ, USA,IEEE, US, 20 June 2004 (2004-06-20), pages 261 - 266Vol1, XP010738001, ISBN: 0-7803-8399-0 *
STEIGERWALD R L ET AL: "High-power, high-performance switching amplifier for driving magnetic resonance imaging gradient coils", POWER ELECTRONICS SPECIALISTS CONFERENCE, 2000. PESC 00. 2000 IEEE 31ST ANNUAL 18-23 JUNE 2000, PISCATAWAY, NJ, USA,IEEE, vol. 2, 18 June 2000 (2000-06-18), pages 643 - 648, XP010518735, ISBN: 0-7803-5692-6 *

Also Published As

Publication number Publication date
US20050275404A1 (en) 2005-12-15
JP4732021B2 (ja) 2011-07-27
JP2006000645A (ja) 2006-01-05
NL1029240A1 (nl) 2005-12-19
DE102005027628A1 (de) 2006-01-05
US7116166B2 (en) 2006-10-03

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AD1A A request for search or an international type search has been filed
RD2N Patents in respect of which a decision has been taken or a report has been made (novelty report)

Effective date: 20060306

PD2B A search report has been drawn up
V1 Lapsed because of non-payment of the annual fee

Effective date: 20150101