ES396025A1 - Static power inverters - Google Patents

Static power inverters

Info

Publication number
ES396025A1
ES396025A1 ES71396025A ES396025A ES396025A1 ES 396025 A1 ES396025 A1 ES 396025A1 ES 71396025 A ES71396025 A ES 71396025A ES 396025 A ES396025 A ES 396025A ES 396025 A1 ES396025 A1 ES 396025A1
Authority
ES
Spain
Prior art keywords
switching means
frequency
output
inverter
coupled
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.)
Expired
Application number
ES71396025A
Other languages
Spanish (es)
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.)
General Electric Co
Original Assignee
General Electric Co
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 General Electric Co filed Critical General Electric Co
Publication of ES396025A1 publication Critical patent/ES396025A1/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
    • H02P27/00—Arrangements or methods for the control of AC motors characterised by the kind of supply voltage
    • H02P27/04—Arrangements or methods for the control of AC motors characterised by the kind of supply voltage using variable-frequency supply voltage, e.g. inverter or converter supply voltage
    • H02P27/06—Arrangements or methods for the control of AC motors characterised by the kind of supply voltage using variable-frequency supply voltage, e.g. inverter or converter supply voltage using dc to ac converters or inverters
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
    • G03B17/00—Details of cameras or camera bodies; Accessories therefor
    • G03B17/48—Details of cameras or camera bodies; Accessories therefor adapted for combination with other photographic or optical apparatus
    • G03B17/50—Details of cameras or camera bodies; Accessories therefor adapted for combination with other photographic or optical apparatus with both developing and finishing apparatus
    • G03B17/52—Details of cameras or camera bodies; Accessories therefor adapted for combination with other photographic or optical apparatus with both developing and finishing apparatus of the Land type
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03D—APPARATUS FOR PROCESSING EXPOSED PHOTOGRAPHIC MATERIALS; ACCESSORIES THEREFOR
    • G03D9/00—Diffusion development apparatus
    • G03D9/02—Diffusion development apparatus using rupturable ampoules of liquid
    • 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
    • H02M7/505—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 thyratron or thyristor type requiring extinguishing means
    • H02M7/515—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 thyratron or thyristor type requiring extinguishing means using semiconductor devices only
    • H02M7/525—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 thyratron or thyristor type requiring extinguishing means using semiconductor devices only with automatic control of output waveform or frequency
    • H02M7/527—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 thyratron or thyristor type requiring extinguishing means using semiconductor devices only with automatic control of output waveform or frequency by pulse width modulation

Abstract

Improvements in the construction of static power inverters with frequency-related voltage cut, characterized in that the inverter has a number of phase outputs, switching means for each of said outputs and a master oscillator, digitally coupled to said switching means for sequentially making conductive and non-conductive said switching means, for establishing an inverter output frequency, which is synchronized with a submultiple of the oscillator frequency, a time ratio control regulator for said switching means, comprising synchronous means, coupled at the output of said oscillator and responding to the signals thereof, to provide a periodic output signal, having a frequency, which is a multiple of said inverter output frequency; a mixer and trigger pulse generator, coupled to the output of said synchronizing means and having a medium voltage reference source, said pulse generator being responsible for the combination thereof to procure time ratio control trigger pulses for said switching means only during time-spaced intervals from said sequential switching thereof; and, means selectively coupling said time ratio control trigger pulses to said switching means, to control the output of the average voltage from said inverter. (Machine-translation by Google Translate, not legally binding)
ES71396025A 1970-10-19 1971-10-15 Static power inverters Expired ES396025A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US8175770A 1970-10-19 1970-10-19

Publications (1)

Publication Number Publication Date
ES396025A1 true ES396025A1 (en) 1974-04-16

Family

ID=22166196

Family Applications (1)

Application Number Title Priority Date Filing Date
ES71396025A Expired ES396025A1 (en) 1970-10-19 1971-10-15 Static power inverters

Country Status (4)

Country Link
JP (1) JPS52535B1 (en)
DE (1) DE2151588A1 (en)
ES (1) ES396025A1 (en)
GB (1) GB1362848A (en)

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3719873A (en) * 1971-06-15 1973-03-06 Gen Electric Current limiting control for an electric power system
US3716775A (en) * 1971-07-14 1973-02-13 Gen Electric Short circuit protection means for power circuits
JPS49123808A (en) * 1973-04-11 1974-11-27
DE2323826C3 (en) * 1973-05-11 1984-07-26 Brown, Boveri & Cie Ag, 6800 Mannheim Control device for a single or multi-phase inverter arrangement
JPS5116425A (en) * 1974-07-31 1976-02-09 Fuji Electric Co Ltd
DE2554223C3 (en) * 1975-12-03 1981-07-30 Danfoss A/S, 6430 Nordborg Control device for maintaining the stability of an inverter
DE2554259C3 (en) * 1975-12-03 1982-03-18 Danfoss A/S, 6430 Nordborg Method and device for controlling a polyphase inverter
JPS5371589U (en) * 1976-11-18 1978-06-15
JPS53138877A (en) * 1977-05-10 1978-12-04 Saito Kougiyou Kk Apparatus for disposal of excreta flushing cattle barns
JPS5917636B2 (en) * 1979-07-13 1984-04-23 東洋電機製造株式会社 PWM inverter device
JPS5937886A (en) * 1982-07-27 1984-03-01 Sanken Electric Co Ltd Dc/ac conversion system
FR2546685B1 (en) * 1983-05-26 1988-12-02 Impulsion L METHOD FOR CONTROLLING VARIABLE SPEED OF POLYPHASE MOTORS FROM A DIRECT OR RECTIFIED CURRENT SOURCE

Also Published As

Publication number Publication date
GB1362848A (en) 1974-08-07
DE2151588A1 (en) 1972-04-27
JPS478568A (en) 1972-05-06
JPS52535B1 (en) 1977-01-08

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