JPH0312173U - - Google Patents

Info

Publication number
JPH0312173U
JPH0312173U JP1990070733U JP7073390U JPH0312173U JP H0312173 U JPH0312173 U JP H0312173U JP 1990070733 U JP1990070733 U JP 1990070733U JP 7073390 U JP7073390 U JP 7073390U JP H0312173 U JPH0312173 U JP H0312173U
Authority
JP
Japan
Prior art keywords
waveform
phase
measuring
time
signal
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.)
Granted
Application number
JP1990070733U
Other languages
English (en)
Other versions
JPH0530138Y2 (ja
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 filed Critical
Publication of JPH0312173U publication Critical patent/JPH0312173U/ja
Application granted granted Critical
Publication of JPH0530138Y2 publication Critical patent/JPH0530138Y2/ja
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • 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
    • 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
    • H02H3/50—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 the appearance of abnormal wave forms, e.g. ac in dc installations
    • 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
    • H02M3/00—Conversion of dc power input into dc power output
    • H02M3/22—Conversion of dc power input into dc power output with intermediate conversion into ac
    • H02M3/24—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters
    • H02M3/28—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac
    • H02M3/325—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal
    • H02M3/335—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only
    • H02M3/337—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only in push-pull configuration
    • H02M3/3376—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only in push-pull configuration with automatic control of output voltage or current
    • H02M3/3378—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only in push-pull configuration with automatic control of output voltage or current in a push-pull configuration of the parallel type
    • 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
    • H02M7/538—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 in a push-pull configuration
    • H02M7/53803—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 in a push-pull configuration with automatic control of output voltage or current
    • H02M7/53806—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 in a push-pull configuration with automatic control of output voltage or current in a push-pull configuration of the parallel type

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Measurement Of Current Or Voltage (AREA)

Description

【図面の簡単な説明】
第１図はこの考案を適用した直流リンクインバ
ータ装置の一実施例を示すブロツク図、第２図は
この考案の一実施例に従つて構成された第１図に
例示した発電機制御装置の一部を示すブロツク図
、第３図は第２図に例示した選定点で発生される
信号を示す波形図、第４図〜第６図は第２図に例
示したインバータ装置の各部の動作をそれぞれ示
すフローチヤート図である。 １…発電機、５…直流リンクインバータ兼フイ
ルタ、７…インバータ制御装置、１１…発電機制
御装置、１７…マルチプレクサ、２１…サンプル
ホールド回路、２３…Ａ／Ｄ変換器、２５…マイ
クロプロセツサ装置。尚、図中、同一符号は同一
又は相当部分を示す。

Claims (1)

  1. 【実用新案登録請求の範囲】 (1) 周期的に時間変化する多相波形の直流含有
    分を測定するための装置であつて、 前記波形の各相の瞬時値を測定する手段と、 前記瞬時値を記憶する手段と、 前記波形の１サイクル中の第１の時点における
    前記波形の各相の瞬時値を相次いで測定し且つ前
    記記憶手段にその瞬時値を記憶するように前記測
    定手段を動作させ、その後、前記波形の関連した
    相の半サイクルの実質的に正確な奇数個だけ前記
    第１の時点から時間的に離れた第２の時点におけ
    る前記波形の各相の瞬時値を測定するように前記
    測定手段を動作させ、前記第１及び第２の時点に
    おける前記波形の前記瞬時値が、前記波形の中間
    値から等しく且つ反対に変位され、更に前記記憶
    手段内に測定値を記憶し、前記第１及び第２の瞬
    時値を平均化することによつて各相の直流含有分
    信号を発生する手段と、 しきい値信号を発生する手段と、 前記直流含有分信号の最大信号を前記しきい値
    信号と比較する手段と、 前記直流含有分信号の前記最大信号が前記しき
    い値信号を越えているときに出力信号を発生する
    手段と、 を備えている装置。 (2) 測定手段は、マルチプレクサ及びサンプル
    ホールド回路を含んでおり、制御手段は、波形の
    各相を前記サンプルホールド回路へ相次いで印加
    するように前記マルチプレクサを動作させる手段
    を含んでいる実用新案登録請求の範囲第１項記載
    の装置。
JP1990070733U 1981-01-15 1990-07-04 Expired - Lifetime JPH0530138Y2 (ja)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US06/225,226 US4500837A (en) 1981-01-15 1981-01-15 Detection of DC content in an AC waveform

Publications (2)

Publication Number Publication Date
JPH0312173U true JPH0312173U (ja) 1991-02-07
JPH0530138Y2 JPH0530138Y2 (ja) 1993-08-02

Family

ID=22844046

Family Applications (2)

Application Number Title Priority Date Filing Date
JP57003529A Pending JPS57141563A (en) 1981-01-15 1982-01-14 Method of and apparatus for measuring component containing direct current in ac waveform
JP1990070733U Expired - Lifetime JPH0530138Y2 (ja) 1981-01-15 1990-07-04

Family Applications Before (1)

Application Number Title Priority Date Filing Date
JP57003529A Pending JPS57141563A (en) 1981-01-15 1982-01-14 Method of and apparatus for measuring component containing direct current in ac waveform

Country Status (5)

Country Link
US (1) US4500837A (ja)
JP (2) JPS57141563A (ja)
DE (1) DE3201131A1 (ja)
FR (1) FR2497956B1 (ja)
GB (1) GB2091506B (ja)

Families Citing this family (24)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS605782A (ja) * 1983-06-22 1985-01-12 Hitachi Ltd インバ−タ装置
US4556842A (en) * 1983-07-26 1985-12-03 Westinghouse Electric Corp. Tracking filter for sensing DC content in an AC waveform
JPS60107769U (ja) * 1983-12-27 1985-07-22 日本電気ホームエレクトロニクス株式会社 直流分測定回路
US4916391A (en) * 1984-11-15 1990-04-10 Doerman Eryk S LVDT displacement sensor with signal noise reduction for use in weighing apparatus
DE3502638A1 (de) * 1985-01-26 1986-07-31 MWB Messwandler-Bau AG, 8600 Bamberg Verfahren, schaltung und einrichtung zur beseitigung der gleichspannungskomponente eines kapazitiven wechselspannungsteilers
DE3528046A1 (de) * 1985-08-05 1987-02-05 Bbc Brown Boveri & Cie Rundsteuerempfaenger
JPH0775471B2 (ja) * 1987-02-12 1995-08-09 三菱電機株式会社 インバータ装置
DE3708892C2 (de) * 1987-03-19 1994-03-03 Heidelberger Druckmasch Ag Strommeßeinrichtung, insbesondere zur Bestimmung des Motorstroms eines Gleichstrommotors
US4905117A (en) * 1988-09-02 1990-02-27 Westinghouse Electric Corp. Circuit and method for DC content protection of parallel VSCF power systems
JP2783555B2 (ja) * 1988-09-26 1998-08-06 株式会社東芝 電力変換装置
US4941075A (en) * 1989-01-24 1990-07-10 Westinghouse Electric Corp. Timing correction for square wave inverter power poles
US5172117A (en) * 1989-06-19 1992-12-15 Linear Instruments Analog to digital conversion using an integrater and a sample and hold circuit
US5461306A (en) * 1993-12-28 1995-10-24 Schlumberger Industries, Inc. DC current detection system for a current transformer
US5694108A (en) * 1996-05-01 1997-12-02 Abb Power T&D Company Inc. Apparatus and methods for power network coupling
JPH10164152A (ja) * 1996-11-29 1998-06-19 General Res Of Electron Inc Ｆｓｋ受信機用中心誤差検出回路
US5978371A (en) * 1997-03-31 1999-11-02 Abb Power T&D Company Inc. Communications module base repeater
US5933073A (en) * 1997-07-07 1999-08-03 Abb Power T&D Company Inc. Apparatus and methods for power network coupling
DE19740256A1 (de) * 1997-09-12 1998-09-10 Siemens Ag Verfahren zum Erfassen einer Gleichstromkomponente in einem mit einer Wechselstromkomponente überlagerten Signal
US6233163B1 (en) * 2000-10-16 2001-05-15 Phoenixtex Power Co., Ltd. Automatic balance adjusting device for AC power supply
US7112898B2 (en) * 2002-01-28 2006-09-26 Square D Company Real-time digital voltage sag compensator
DE102004056636B4 (de) * 2004-11-23 2008-11-13 Bowa-Electronic Gmbh Hochfrequenzchirurgie-Gerät und Verfahren zu dessen Betrieb
US8564277B2 (en) * 2009-08-31 2013-10-22 Maxim Integrated Products, Inc. System for and method of virtual simultaneous sampling with a single ADC core
FR3038389B1 (fr) * 2015-06-30 2018-10-26 Safran Electrical & Power Circuit de surveillance d'un reseau electrique triphase
US10608440B2 (en) * 2016-08-31 2020-03-31 Te Connectivity Corporation Control circuit configured to determine when a direct current component in an alternating current power line passes a designated threshold

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5574467A (en) * 1978-11-30 1980-06-05 Olympus Optical Co Ltd Method of eliminating noise from known frequency

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1746935A (en) * 1925-10-27 1930-02-11 Weston Electrical Instr Corp Apparatus for the measurement of very weak alternating currents
US2624770A (en) * 1949-02-11 1953-01-06 Sun Oil Co Vacuum tube voltmeter
US3510753A (en) * 1967-12-04 1970-05-05 Rowan Controller Ripple eliminator for pulsating unidirectional current power supply
US3621389A (en) * 1969-06-27 1971-11-16 Ibm Frequency domain analyzer using variable-rate time compression
JPS5754967B2 (ja) * 1974-03-30 1982-11-20
US3988689A (en) * 1975-02-07 1976-10-26 National Semiconductor Corporation Offset corrected amplifier
JPS5226874A (en) * 1975-08-25 1977-02-28 Giichiro Kato Rotary type electric field intensity measuring apparatus using a stati onary electrode plate provided with holes
JPS6019752B2 (ja) * 1977-07-27 1985-05-17 日本曹達株式会社 イミダゾ−ル誘導体、その製造方法及び農園芸用殺菌剤

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5574467A (en) * 1978-11-30 1980-06-05 Olympus Optical Co Ltd Method of eliminating noise from known frequency

Also Published As

Publication number Publication date
US4500837A (en) 1985-02-19
FR2497956B1 (fr) 1986-02-28
GB2091506B (en) 1984-05-23
JPS57141563A (en) 1982-09-01
JPH0530138Y2 (ja) 1993-08-02
DE3201131A1 (de) 1982-10-21
FR2497956A1 (fr) 1982-07-16
GB2091506A (en) 1982-07-28

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