FR2438954A1 - Load limiter for multiple electric heater loads - uses triacs to chop half-cycles from each heater circuit in succession - Google Patents

Load limiter for multiple electric heater loads - uses triacs to chop half-cycles from each heater circuit in succession

Info

Publication number
FR2438954A1
FR2438954A1 FR7829101A FR7829101A FR2438954A1 FR 2438954 A1 FR2438954 A1 FR 2438954A1 FR 7829101 A FR7829101 A FR 7829101A FR 7829101 A FR7829101 A FR 7829101A FR 2438954 A1 FR2438954 A1 FR 2438954A1
Authority
FR
France
Prior art keywords
cycles
supply
turn
succession
triacs
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.)
Withdrawn
Application number
FR7829101A
Other languages
French (fr)
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to FR7829101A priority Critical patent/FR2438954A1/en
Publication of FR2438954A1 publication Critical patent/FR2438954A1/en
Withdrawn legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J3/00—Circuit arrangements for ac mains or ac distribution networks
    • H02J3/12—Circuit arrangements for ac mains or ac distribution networks for adjusting voltage in ac networks by changing a characteristic of the network load
    • H02J3/14—Circuit arrangements for ac mains or ac distribution networks for adjusting voltage in ac networks by changing a characteristic of the network load by switching loads on to, or off from, network, e.g. progressively balanced loading
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J2310/00—The network for supplying or distributing electric power characterised by its spatial reach or by the load
    • H02J2310/50—The network for supplying or distributing electric power characterised by its spatial reach or by the load for selectively controlling the operation of the loads
    • H02J2310/52—The controlling of the operation of the load not being the total disconnection of the load, i.e. entering a degraded mode or in current limitation
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J2310/00—The network for supplying or distributing electric power characterised by its spatial reach or by the load
    • H02J2310/50—The network for supplying or distributing electric power characterised by its spatial reach or by the load for selectively controlling the operation of the loads
    • H02J2310/56—The network for supplying or distributing electric power characterised by its spatial reach or by the load for selectively controlling the operation of the loads characterised by the condition upon which the selective controlling is based
    • H02J2310/58—The condition being electrical
    • H02J2310/60—Limiting power consumption in the network or in one section of the network, e.g. load shedding or peak shaving
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B70/00—Technologies for an efficient end-user side electric power management and consumption
    • Y02B70/30—Systems integrating technologies related to power network operation and communication or information technologies for improving the carbon footprint of the management of residential or tertiary loads, i.e. smart grids as climate change mitigation technology in the buildings sector, including also the last stages of power distribution and the control, monitoring or operating management systems at local level
    • Y02B70/3225—Demand response systems, e.g. load shedding, peak shaving
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
    • Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
    • Y04S20/00—Management or operation of end-user stationary applications or the last stages of power distribution; Controlling, monitoring or operating thereof
    • Y04S20/20—End-user application control systems
    • Y04S20/222—Demand response systems, e.g. load shedding, peak shaving

Abstract

If an electric heating installation consists of a number of separate resistance loads, it may be required to limit the total power drawn from the supply. This can be done by an overload relay cutting off the whole load either by chopping the voltage with thyristors or triacs or by chopping entire half-cycles electronically. Each of these has disadvantages. Half-cycles can be chopped from the supply to successive heaters in turn. A current transformer or shunt supplies a stepless rectifier amplifier which in turn supplies an exponential amplifier. A ring counter counts half-cycles and actuates in sequence switches controlling the supply to the individual heaters. A switch energises a step size modulator which in turn controls a triac via its control circuit.
FR7829101A 1978-10-12 1978-10-12 Load limiter for multiple electric heater loads - uses triacs to chop half-cycles from each heater circuit in succession Withdrawn FR2438954A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR7829101A FR2438954A1 (en) 1978-10-12 1978-10-12 Load limiter for multiple electric heater loads - uses triacs to chop half-cycles from each heater circuit in succession

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7829101A FR2438954A1 (en) 1978-10-12 1978-10-12 Load limiter for multiple electric heater loads - uses triacs to chop half-cycles from each heater circuit in succession

Publications (1)

Publication Number Publication Date
FR2438954A1 true FR2438954A1 (en) 1980-05-09

Family

ID=9213646

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7829101A Withdrawn FR2438954A1 (en) 1978-10-12 1978-10-12 Load limiter for multiple electric heater loads - uses triacs to chop half-cycles from each heater circuit in succession

Country Status (1)

Country Link
FR (1) FR2438954A1 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0055315A1 (en) * 1979-03-19 1982-07-07 Cyborex Laboratories, Inc. Improvements in or relating to energy management
FR2567333A1 (en) * 1984-07-03 1986-01-10 Corbier Robert Proportional action electrical load-shedding apparatus, in particular for living premises
GB2408158A (en) * 2003-11-11 2005-05-18 Darren O'connor AC electrical heating element energy saving control circuit

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2074719A1 (en) * 1970-01-21 1971-10-08 Ferodo Sa
FR2182900A1 (en) * 1972-03-27 1973-12-14 Forman George
FR2254900A1 (en) * 1973-12-18 1975-07-11 Daetwyler Ag Power consumption control for several loads - uses -programme control unit for remote control of acutal and rated load per time unit
FR2349988A1 (en) * 1976-04-27 1977-11-25 Seine Const Elec Power supply network with automatic load equalising - has priority and secondary circuits and disconnector for secondary circuit operating when max. demand is exceeded

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2074719A1 (en) * 1970-01-21 1971-10-08 Ferodo Sa
FR2182900A1 (en) * 1972-03-27 1973-12-14 Forman George
FR2254900A1 (en) * 1973-12-18 1975-07-11 Daetwyler Ag Power consumption control for several loads - uses -programme control unit for remote control of acutal and rated load per time unit
FR2349988A1 (en) * 1976-04-27 1977-11-25 Seine Const Elec Power supply network with automatic load equalising - has priority and secondary circuits and disconnector for secondary circuit operating when max. demand is exceeded

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0055315A1 (en) * 1979-03-19 1982-07-07 Cyborex Laboratories, Inc. Improvements in or relating to energy management
FR2567333A1 (en) * 1984-07-03 1986-01-10 Corbier Robert Proportional action electrical load-shedding apparatus, in particular for living premises
GB2408158A (en) * 2003-11-11 2005-05-18 Darren O'connor AC electrical heating element energy saving control circuit

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Legal Events

Date Code Title Description
ST Notification of lapse
AR Application made for restoration
BR Restoration of rights
TP Transmission of property
ST Notification of lapse