GB1385224A - Electric transformer - Google Patents

Electric transformer

Info

Publication number
GB1385224A
GB1385224A GB1008072A GB1008072A GB1385224A GB 1385224 A GB1385224 A GB 1385224A GB 1008072 A GB1008072 A GB 1008072A GB 1008072 A GB1008072 A GB 1008072A GB 1385224 A GB1385224 A GB 1385224A
Authority
GB
United Kingdom
Prior art keywords
output
input
windings
winding
spacers
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
GB1008072A
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.)
CBS Corp
Original Assignee
Westinghouse Electric Corp
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 to US13670171A priority Critical
Application filed by Westinghouse Electric Corp filed Critical Westinghouse Electric Corp
Publication of GB1385224A publication Critical patent/GB1385224A/en
Expired legal-status Critical Current

Links

Classifications

    • HELECTRICITY
    • H01BASIC ELECTRIC ELEMENTS
    • H01FMAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F38/00Adaptations of transformers or inductances for specific applications or functions
    • H01F38/02Adaptations of transformers or inductances for specific applications or functions for non-linear operation
    • GPHYSICS
    • G05CONTROLLING; REGULATING
    • G05FSYSTEMS FOR REGULATING ELECTRIC OR MAGNETIC VARIABLES
    • G05F3/00Non-retroactive systems for regulating electric variables by using an uncontrolled element, or an uncontrolled combination of elements, such element or such combination having self-regulating properties
    • G05F3/02Regulating voltage or current
    • G05F3/04Regulating voltage or current wherein the variable is ac
    • G05F3/06Regulating voltage or current wherein the variable is ac using combinations of saturated and unsaturated inductive devices, e.g. combined with resonant circuit
    • HELECTRICITY
    • H01BASIC ELECTRIC ELEMENTS
    • H01FMAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F27/00Details of transformers or inductances, in general
    • H01F27/24Magnetic cores
    • H01F27/245Magnetic cores made from sheets, e.g. grain-oriented
    • HELECTRICITY
    • H01BASIC ELECTRIC ELEMENTS
    • H01FMAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F27/00Details of transformers or inductances, in general
    • H01F27/24Magnetic cores
    • H01F27/25Magnetic cores made from strips or ribbons

Abstract

1385224 Voltage regulating transformers WESTINGHOUSE ELECTRIC CORP 3 March 1972 [23 April 1971] 10080/72 Heading H3X [Also in Divisions H1 and G3] The invention provides a readily adjustable core construction for a parametric voltage regulating transformer. A known device whose manner of operation is described in patent Specification 1,308,966 is shown in Fig. 1, and has input and output windings 46, 52, the latter being connected to a capacitor 54 to form a resonant circuit. The core leg 26 normally prevents interaction between the input and output windings, but during a small part of the input waveform cycle, say 15 degrees, this leg saturates and energy is coupled from the input to the output. Because the input and output are isolated except for this small part of the cycle the voltage stabilization and filtering are high. The present invention provides core structures in which the air gap 60 is readily adjusted to optimize the waveform and stability of the output. One embodiment is shown in Fig. 4, and has the air gap defined by non-magnetic spacers at 96 and 98, these spacers being replaceable by ones of different thickness. The core is made by winding a length of suitable material, e.g. grain oriented silicon steel, to form a region which encircles the input winding, a region which encircles the output winding and a region which surrounds the first two regions; the structure is cut to separate the central region 72 from the input and output regions 64, 68, the windings being slid on to these latter regions before reassembly. The spacers 96, 98 may then be chosen as required. In another embodiment, Figs. 5, 6, 7 (not shown), two C cores are made by winding and cutting an oval core; these cores carry the input and output windings, and are butted against a magnetic shunt and spacers which act in a manner similar to the central region of Fig. 3. Fig. 8 shows an alternative where the C cores are replaced by wound E cores separated by a laminated plate 154 and spacers 160. The windings (not shown) are on limbs 170, 176. These E cores may be laminated structures, Fig. 9 (not shown). The central limbs carrying the windings may be of twice the area of the other limbs, Figs. 11, 12 (not shown). In Fig. 14 a laminated structure is shown, using modified E laminations with L laminations. It will be seen that the laminations alternate so that one E lamination overlies an L lamination and vice-versa. The assembly is clamped by bolts through the holes 290, leaving a gap between the lamination ends at 276. By making the bolt holes oversize or elongate the laminations can be moved to adjust the gap size. The capacitor may be tapped into the output winding, or may have a separate output winding, Figs. 7, 10, 13 (not shown).
GB1008072A 1971-04-23 1972-03-03 Electric transformer Expired GB1385224A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US13670171A true 1971-04-23 1971-04-23

Publications (1)

Publication Number Publication Date
GB1385224A true GB1385224A (en) 1975-02-26

Family

ID=22473981

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1008072A Expired GB1385224A (en) 1971-04-23 1972-03-03 Electric transformer

Country Status (10)

Country Link
US (1) US3686561A (en)
JP (2) JPS5344650B1 (en)
BE (1) BE782437A (en)
BR (1) BR7202223D0 (en)
CA (1) CA962346A (en)
FR (1) FR2134409B1 (en)
GB (1) GB1385224A (en)
IT (1) IT953694B (en)
NL (1) NL7205473A (en)
ZA (1) ZA7201496B (en)

Families Citing this family (34)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3921055A (en) * 1972-10-19 1975-11-18 Union Carbide Corp Welding power supply having dual output transformer
US3965408A (en) * 1974-12-16 1976-06-22 International Business Machines Corporation Controlled ferroresonant transformer regulated power supply
US4339706A (en) * 1975-05-29 1982-07-13 Jodice Controls Corporation Current controlling
DE7730094U1 (en) * 1976-10-06 1978-01-05 Bicc Ltd., London magnetic core
JPS6013288B2 (en) * 1979-04-20 1985-04-06 Sony Corp
US4654563A (en) * 1984-03-28 1987-03-31 Energy Technologies Corp. Fluorescent lamp ballast
US4943763A (en) * 1988-09-08 1990-07-24 Albar, Inc. Ferroresonant transformer with dual outputs
US5912553A (en) * 1997-01-17 1999-06-15 Schott Corporation Alternating current ferroresonant transformer with low harmonic distortion
US7242275B2 (en) * 2003-02-05 2007-07-10 Paper Quality Management Associates Variable inductor
US6856230B2 (en) * 2003-05-27 2005-02-15 Weimin Lu Harmonic filtering circuit with special transformer
US7762048B1 (en) 2005-08-16 2010-07-27 Lecompte Catheleen B Therapeutic hoof boot
US20080074227A1 (en) * 2006-09-21 2008-03-27 Ford Global Technologies, Llc Inductor topologies with substantial common-mode and differential-mode inductance
JP4546439B2 (en) * 2006-10-31 2010-09-15 株式会社デンソー Magnetic circuit of 2-transform DCDC converter
TWI393154B (en) * 2009-07-03 2013-04-11
CA2781067C (en) 2009-11-19 2018-05-15 Hydro-Quebec System and method for treating an amorphous alloy ribbon
US8575779B2 (en) 2010-02-18 2013-11-05 Alpha Technologies Inc. Ferroresonant transformer for use in uninterruptible power supplies
CA2825483C (en) 2011-01-23 2019-11-12 Alpha Technologies Inc. Switching systems and methods for use in uninterruptible power supplies
EP3486203A1 (en) 2011-05-18 2019-05-22 Hydro-Quebec Ferromagnetic metal ribbon transfer apparatus and method
US8416045B2 (en) * 2011-06-27 2013-04-09 Onyxip, Inc. Magnetic power converter
KR101241564B1 (en) * 2011-08-04 2013-03-11 전주대학교 산학협력단 Couple inductor, Couple transformer and Couple inductor-transformer
US9234916B2 (en) 2012-05-11 2016-01-12 Alpha Technologies Inc. Status monitoring cables for generators
WO2014081155A1 (en) * 2012-11-20 2014-05-30 엘지이노텍 주식회사 Integrated-type transformer
CN104051138B (en) * 2013-03-15 2016-05-04 艾默生网络能源系统北美公司 Transformer
DE102014107829B4 (en) * 2014-06-04 2020-07-30 Michael Riedel Transformatorenbau Gmbh Inductance and manufacturing processes therefor and modular system
US9815594B2 (en) * 2014-10-15 2017-11-14 Abb Schweiz Ag Tank for electrical equipment
MX2017006878A (en) * 2014-11-25 2017-08-15 Aperam Basic module for magnetic core of an electrical transformer, magnetic core comprising said basic module, method for manufacturing said magnetic core, and transformer comprising said magnetic core.
DE102014117551A1 (en) * 2014-11-28 2016-06-02 Sma Solar Technology Ag Multiple choke and power converter with a multiple choke
BR112018004887A2 (en) 2015-09-13 2018-10-09 Alpha Tech Inc power control systems and methods.
US10381867B1 (en) 2015-10-16 2019-08-13 Alpha Technologeis Services, Inc. Ferroresonant transformer systems and methods with selectable input and output voltages for use in uninterruptible power supplies
US10319505B2 (en) 2016-02-15 2019-06-11 Onyxip, Inc. Electro-magnetic flux valve
FR3050069B1 (en) * 2016-04-08 2018-05-11 Valeo Siemens Eautomotive France Sas Magnetic component, resonant electric circuit, electric converter, and electrical system
RU2660835C1 (en) * 2017-05-11 2018-07-10 федеральное государственное бюджетное образовательное учреждение высшего образования "Уфимский государственный авиационный технический университет" Parametric transformer
CA3069966A1 (en) 2017-07-14 2019-01-17 Alpha Technologies Services, Inc. Voltage regulated ac power supply systems and methods
RU2732487C1 (en) * 2020-03-26 2020-09-17 федеральное государственное бюджетное образовательное учреждение высшего образования "Уфимский государственный авиационный технический университет" Parametric orthogonal-flow transformer

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2561855A (en) * 1948-09-23 1951-07-24 Gen Electric Ballast construction
US2668250A (en) * 1950-01-07 1954-02-02 Gen Electric Combined low reactance autotransformer and ballast reactor
US2664541A (en) * 1950-11-24 1953-12-29 Gen Electric Electric ballast
US2630478A (en) * 1950-12-06 1953-03-03 Gen Electric Laminated magnetic core for fluorescent ballast systems
US2706271A (en) * 1951-10-31 1955-04-12 Raytheon Mfg Co Voltage regulators
GB1050605A (en) * 1961-09-21
US3546571A (en) * 1968-06-21 1970-12-08 Varo Constant voltage ferroresonant transformer utilizing unequal area core structure
US3579088A (en) * 1969-04-08 1971-05-18 Taylor C Fletcher Ferroresonant transformer with controllable flux
US3584290A (en) * 1969-06-24 1971-06-08 Westinghouse Electric Corp Regulating and filtering transformer

Also Published As

Publication number Publication date
CA962346A (en) 1975-02-04
IT953694B (en) 1973-08-10
JPS5344650B1 (en) 1978-11-30
CA962346A1 (en)
ZA7201496B (en) 1972-11-29
BR7202223D0 (en) 1973-08-09
NL7205473A (en) 1972-10-25
BE782437A1 (en)
FR2134409A1 (en) 1972-12-08
US3686561A (en) 1972-08-22
FR2134409B1 (en) 1976-08-06
BE782437A (en) 1972-10-23
JPS5247535B1 (en) 1977-12-03

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Legal Events

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