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GB1519141A - Switching systems - Google Patents

Switching systems

Info

Publication number
GB1519141A
GB1519141A GB1966274A GB1966274A GB1519141A GB 1519141 A GB1519141 A GB 1519141A GB 1966274 A GB1966274 A GB 1966274A GB 1966274 A GB1966274 A GB 1966274A GB 1519141 A GB1519141 A GB 1519141A
Authority
GB
United Kingdom
Prior art keywords
generator
switches
delay interval
magnitude
sequence
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
GB1966274A
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.)
Communications Patents Ltd
Original Assignee
Communications Patents 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 Communications Patents Ltd filed Critical Communications Patents Ltd
Priority to GB1966274A priority Critical patent/GB1519141A/en
Publication of GB1519141A publication Critical patent/GB1519141A/en
Expired 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
    • 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
    • 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
    • H02M7/539—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 with automatic control of output wave form or frequency

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Inverter Devices (AREA)

Abstract

1519141 Protecting inverters COMMUNICATIONS PATENTS Ltd 8 July 1975 [3 May 1974] 19662/74 Heading H2F A switching system comprises a plurality of semi-conductor switches 4, 5 arranged to be operated sequentially by a series of "on" and "off" command signals, means 3 for providing a delay interval between the "off" comand to any one switch and the "on" command to the next switch in sequence, and means 7 for detecting simultaneous conduction of both or successive switches in the sequence to cause an an increase in the duration of the delay interval. The "on" and "off" command signals C, D are provided by a logic circuit 2 which receives signals A and B from a switching signal generator 1 and a pulse generator 3, the signal B determining the delay interval tm. Should the switches 4, 5 conduct simultaneously the device 7 provides an output voltage on line 8 to generator 3 which is proportional in magnitude to the magnitude of the simultaneous current in switches 4, 5. A reference voltage from a generator 9 is also applied to generator 3, the delay time being determined by the amplitude of the voltage on line 8 relative to the reference voltage (which may be zero). The generator 3 may be programmed to maintain the delay interval between predetermined upper and lower limits. The arrangement shown acts as a D.C. to A.C. converter with a D.C. source 10 and a load 6. The D.C. source may be amplitude modulated and the generator 1 may be frequency or phase modulated. The detecting device 7 may comprise a filtering means having a fast response time but a long decay time, and the device 7 may control protective devices.
GB1966274A 1975-07-08 1975-07-08 Switching systems Expired GB1519141A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1966274A GB1519141A (en) 1975-07-08 1975-07-08 Switching systems

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1966274A GB1519141A (en) 1975-07-08 1975-07-08 Switching systems

Publications (1)

Publication Number Publication Date
GB1519141A true GB1519141A (en) 1978-07-26

Family

ID=10133095

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1966274A Expired GB1519141A (en) 1975-07-08 1975-07-08 Switching systems

Country Status (1)

Country Link
GB (1) GB1519141A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0458055A3 (en) * 1990-05-21 1992-03-25 Robert Bosch Gmbh Pulse width modulation method for a convertor

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0458055A3 (en) * 1990-05-21 1992-03-25 Robert Bosch Gmbh Pulse width modulation method for a convertor

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Legal Events

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