AU690489B2 - Capacity judging apparatus of capacitor in power converter outputting three level voltage - Google Patents

Capacity judging apparatus of capacitor in power converter outputting three level voltage

Info

Publication number
AU690489B2
AU690489B2 AU23706/97A AU2370697A AU690489B2 AU 690489 B2 AU690489 B2 AU 690489B2 AU 23706/97 A AU23706/97 A AU 23706/97A AU 2370697 A AU2370697 A AU 2370697A AU 690489 B2 AU690489 B2 AU 690489B2
Authority
AU
Australia
Prior art keywords
capacitor
power converter
level voltage
judging apparatus
capacity judging
Prior art date
Legal status (The legal status 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 status listed.)
Ceased
Application number
AU23706/97A
Other versions
AU2370697A (en
Inventor
Kiyoshi Nakata
Syuuji Saitou
Kiyoshi TERASAWA
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hitachi Ltd
Original Assignee
Hitachi Ltd
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 Hitachi Ltd filed Critical Hitachi Ltd
Publication of AU2370697A publication Critical patent/AU2370697A/en
Application granted granted Critical
Publication of AU690489B2 publication Critical patent/AU690489B2/en
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H7/00—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions
    • H02H7/16—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for capacitors
    • 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
    • H02M7/00—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output
    • H02M7/42—Conversion of dc power input into ac power output without possibility of reversal
    • H02M7/44—Conversion of dc power input into ac power output without possibility of reversal by static converters
    • H02M7/48—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
    • H02M7/53—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal
    • H02M7/537—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only, e.g. single switched pulse inverters
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H3/00—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection
    • H02H3/20—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to excess voltage
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H7/00—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions
    • H02H7/08—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for dynamo-electric motors

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Inverter Devices (AREA)
  • Protection Of Static Devices (AREA)
  • Control Of Ac Motors In General (AREA)
AU23706/97A 1996-06-14 1997-05-29 Capacity judging apparatus of capacitor in power converter outputting three level voltage Ceased AU690489B2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP8-153699 1996-06-14
JP15369996A JP3173376B2 (en) 1996-06-14 1996-06-14 Apparatus for determining the capacitance of a capacitor of a three-level power converter

Publications (2)

Publication Number Publication Date
AU2370697A AU2370697A (en) 1998-01-08
AU690489B2 true AU690489B2 (en) 1998-04-23

Family

ID=15568190

Family Applications (1)

Application Number Title Priority Date Filing Date
AU23706/97A Ceased AU690489B2 (en) 1996-06-14 1997-05-29 Capacity judging apparatus of capacitor in power converter outputting three level voltage

Country Status (6)

Country Link
JP (1) JP3173376B2 (en)
KR (1) KR980006703A (en)
CN (1) CN1169049A (en)
AU (1) AU690489B2 (en)
BR (1) BR9703583A (en)
ZA (1) ZA975118B (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6115312Y2 (en) * 1980-01-22 1986-05-13
FI120280B (en) 2008-01-21 2009-08-31 Switch High Power Converters O Method for monitoring the condition of DC capacitors
DE102013104847A1 (en) * 2013-05-10 2014-11-13 Ebm-Papst Mulfingen Gmbh & Co. Kg "Protective circuit for insulation damage due to failure of DC link capacitors"
EP3242391B1 (en) * 2016-05-03 2020-03-04 ABB Schweiz AG Method for monitoring change in capacitance in electric system and electric system
JP7002985B2 (en) * 2018-04-12 2022-01-20 株式会社東芝 Power converter and control method of power converter
CN109347354B (en) * 2018-11-26 2020-06-05 合肥科威尔电源系统股份有限公司 Midpoint voltage ripple suppression device and method based on third harmonic injection

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0013273A1 (en) * 1978-12-22 1980-07-09 United Technologies Corporation Auxiliary commutation circuit for an inverter
DE3528641A1 (en) * 1985-06-28 1987-01-08 Bbc Brown Boveri & Cie High-voltage DC voltage source

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0013273A1 (en) * 1978-12-22 1980-07-09 United Technologies Corporation Auxiliary commutation circuit for an inverter
DE3528641A1 (en) * 1985-06-28 1987-01-08 Bbc Brown Boveri & Cie High-voltage DC voltage source

Also Published As

Publication number Publication date
CN1169049A (en) 1997-12-31
BR9703583A (en) 1998-07-07
AU2370697A (en) 1998-01-08
KR980006703A (en) 1998-03-30
JP3173376B2 (en) 2001-06-04
JPH104626A (en) 1998-01-06
ZA975118B (en) 1997-12-31

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Legal Events

Date Code Title Description
MK14 Patent ceased section 143(a) (annual fees not paid) or expired