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GB1077987A - Frequency changing apparatus - Google Patents

Frequency changing apparatus

Info

Publication number
GB1077987A
GB1077987A GB3690065A GB3690065A GB1077987A GB 1077987 A GB1077987 A GB 1077987A GB 3690065 A GB3690065 A GB 3690065A GB 3690065 A GB3690065 A GB 3690065A GB 1077987 A GB1077987 A GB 1077987A
Authority
GB
United Kingdom
Prior art keywords
frequency changing
source
rectifiers
changing apparatus
controlled rectifiers
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
GB3690065A
Inventor
Keith Harold Williamson
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.)
Philips Components Ltd
Original Assignee
Mullard 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 Mullard Ltd filed Critical Mullard Ltd
Priority to GB3690065A priority Critical patent/GB1077987A/en
Publication of GB1077987A publication Critical patent/GB1077987A/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

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)

Abstract

1,077,987. Frequency changing; control of A.C. motors. MULLARD Ltd. June 30, 1966 [Aug. 27, 1965], No. 36900/65. Headings H2F and H2J. A frequency changer supplying a centretapped load winding 5 which may be an induction motor from an A.C. source 7 comprises a capacitor 8 and two pairs of controlled rectifiers 1, 3 and 2, 4 arranged as shown. The controlled rectifiers may be thyristors or gasfilled valves or each pair may be replaced by a single solid state five-layer four-terminal device. The rectifiers are triggered from an oscillator and may conduct either for all or only a part of each half-cycle of the source.
GB3690065A 1965-08-27 1965-08-27 Frequency changing apparatus Expired GB1077987A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB3690065A GB1077987A (en) 1965-08-27 1965-08-27 Frequency changing apparatus

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB3690065A GB1077987A (en) 1965-08-27 1965-08-27 Frequency changing apparatus

Publications (1)

Publication Number Publication Date
GB1077987A true GB1077987A (en) 1967-08-02

Family

ID=10392063

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3690065A Expired GB1077987A (en) 1965-08-27 1965-08-27 Frequency changing apparatus

Country Status (1)

Country Link
GB (1) GB1077987A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2186751A (en) * 1986-02-14 1987-08-19 Westinghouse Electric Corp Hidden dc-link ac/dc converter using bilateral power switches and motor drive embodying the same
US4706175A (en) * 1982-07-29 1987-11-10 Eaton Corporation Single phase to polyphase bridge-type frequency multiplier
US4706174A (en) * 1982-07-29 1987-11-10 Eaton Corporation Single phase to multiphase frequency multiplier
US4706184A (en) * 1982-07-29 1987-11-10 Eaton Corporation Fractional frequency multiplier
US4706183A (en) * 1982-07-29 1987-11-10 Eaton Corporation Bridge-type frequency multiplier

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4706175A (en) * 1982-07-29 1987-11-10 Eaton Corporation Single phase to polyphase bridge-type frequency multiplier
US4706174A (en) * 1982-07-29 1987-11-10 Eaton Corporation Single phase to multiphase frequency multiplier
US4706184A (en) * 1982-07-29 1987-11-10 Eaton Corporation Fractional frequency multiplier
US4706183A (en) * 1982-07-29 1987-11-10 Eaton Corporation Bridge-type frequency multiplier
GB2186751A (en) * 1986-02-14 1987-08-19 Westinghouse Electric Corp Hidden dc-link ac/dc converter using bilateral power switches and motor drive embodying the same
GB2186751B (en) * 1986-02-14 1989-12-06 Westinghouse Electric Corp Ac/ac converter using bilateral power switches and motor drive embodying the same

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