GB2242587B - Power control circuit for reactive loads - Google Patents

Power control circuit for reactive loads

Info

Publication number
GB2242587B
GB2242587B GB9101252A GB9101252A GB2242587B GB 2242587 B GB2242587 B GB 2242587B GB 9101252 A GB9101252 A GB 9101252A GB 9101252 A GB9101252 A GB 9101252A GB 2242587 B GB2242587 B GB 2242587B
Authority
GB
United Kingdom
Prior art keywords
control circuit
power control
reactive loads
loads
reactive
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 - Fee Related
Application number
GB9101252A
Other versions
GB2242587A (en
GB9101252D0 (en
Inventor
Christopher John Henry Cotter
David Gwynfor Owen
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.)
MOLE VALLEY SYSTEMS Ltd
Original Assignee
MOLE VALLEY SYSTEMS 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
Priority claimed from GB909002228A external-priority patent/GB9002228D0/en
Application filed by MOLE VALLEY SYSTEMS Ltd filed Critical MOLE VALLEY SYSTEMS Ltd
Priority to GB9101252A priority Critical patent/GB2242587B/en
Publication of GB9101252D0 publication Critical patent/GB9101252D0/en
Publication of GB2242587A publication Critical patent/GB2242587A/en
Application granted granted Critical
Publication of GB2242587B publication Critical patent/GB2242587B/en
Anticipated expiration legal-status Critical
Expired - Fee Related 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
    • H02M5/00—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases
    • H02M5/02—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases without intermediate conversion into dc
    • H02M5/04—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases without intermediate conversion into dc by static converters
    • H02M5/22—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases without intermediate conversion into dc by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
    • H02M5/25—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases without intermediate conversion into dc 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
    • H02M5/257—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases without intermediate conversion into dc 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
    • H02M5/2573—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases without intermediate conversion into dc 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 control circuit
    • H02M5/2576—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases without intermediate conversion into dc 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 control circuit with digital control
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03K—PULSE TECHNIQUE
    • H03K17/00—Electronic switching or gating, i.e. not by contact-making and –breaking
    • H03K17/13—Modifications for switching at zero crossing
    • H03K17/136—Modifications for switching at zero crossing in thyristor switches
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03K—PULSE TECHNIQUE
    • H03K17/00—Electronic switching or gating, i.e. not by contact-making and –breaking
    • H03K17/16—Modifications for eliminating interference voltages or currents
    • H03K17/161—Modifications for eliminating interference voltages or currents in field-effect transistor switches
    • H03K17/165—Modifications for eliminating interference voltages or currents in field-effect transistor switches by feedback from the output circuit to the control circuit
    • H03K17/166—Soft switching

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Control Of Electrical Variables (AREA)
GB9101252A 1990-02-01 1991-01-21 Power control circuit for reactive loads Expired - Fee Related GB2242587B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB9101252A GB2242587B (en) 1990-02-01 1991-01-21 Power control circuit for reactive loads

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB909002228A GB9002228D0 (en) 1990-02-01 1990-02-01 A switching circuit for inductive loads
GB9101252A GB2242587B (en) 1990-02-01 1991-01-21 Power control circuit for reactive loads

Publications (3)

Publication Number Publication Date
GB9101252D0 GB9101252D0 (en) 1991-03-06
GB2242587A GB2242587A (en) 1991-10-02
GB2242587B true GB2242587B (en) 1994-05-25

Family

ID=26296580

Family Applications (1)

Application Number Title Priority Date Filing Date
GB9101252A Expired - Fee Related GB2242587B (en) 1990-02-01 1991-01-21 Power control circuit for reactive loads

Country Status (1)

Country Link
GB (1) GB2242587B (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NZ247913A (en) * 1993-06-17 1996-07-26 Southpower Ltd Softly switched voltage output circuit with autotransformer
IT1271151B (en) * 1994-03-21 1997-05-27 Bticino Spa DEVICE FOR THE REGULATION OF ENERGY TRANSFERRED TO AN ELECTRIC LOAD

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB948467A (en) * 1960-11-17 1964-02-05 Pye Ltd Electromagnetic brake control circuit
GB1167132A (en) * 1966-05-11 1969-10-15 Int Computers Ltd Improvements in or relating to Electronic Circuits for Switching an Inductive Load.
GB1393306A (en) * 1971-07-17 1975-05-07 Siemens Ag Circuit arrangement including an inductive load circuit which is provided with a switching transistor for switching on and off the load current therein
GB1470065A (en) * 1975-10-06 1977-04-14 Hadland Ltd J Electrical pulse generators
GB2103443A (en) * 1981-07-31 1983-02-16 Philips Electronic Associated Solenoid drive circuit
EP0212584A2 (en) * 1985-08-14 1987-03-04 Kabushiki Kaisha Toshiba Output circuit device with stabilized potential
US4706619A (en) * 1985-04-25 1987-11-17 Josef Buchl Automotive valve actuation method
EP0332301A2 (en) * 1988-03-10 1989-09-13 Advanced Micro Devices, Inc. Time variant drive for use in integrated circuits

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB948467A (en) * 1960-11-17 1964-02-05 Pye Ltd Electromagnetic brake control circuit
GB1167132A (en) * 1966-05-11 1969-10-15 Int Computers Ltd Improvements in or relating to Electronic Circuits for Switching an Inductive Load.
GB1393306A (en) * 1971-07-17 1975-05-07 Siemens Ag Circuit arrangement including an inductive load circuit which is provided with a switching transistor for switching on and off the load current therein
GB1470065A (en) * 1975-10-06 1977-04-14 Hadland Ltd J Electrical pulse generators
GB2103443A (en) * 1981-07-31 1983-02-16 Philips Electronic Associated Solenoid drive circuit
US4706619A (en) * 1985-04-25 1987-11-17 Josef Buchl Automotive valve actuation method
EP0212584A2 (en) * 1985-08-14 1987-03-04 Kabushiki Kaisha Toshiba Output circuit device with stabilized potential
EP0332301A2 (en) * 1988-03-10 1989-09-13 Advanced Micro Devices, Inc. Time variant drive for use in integrated circuits

Also Published As

Publication number Publication date
GB2242587A (en) 1991-10-02
GB9101252D0 (en) 1991-03-06

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Legal Events

Date Code Title Description
PCNP Patent ceased through non-payment of renewal fee

Effective date: 19960121