GB1341496A – Electrical braking of induction motors
– Google Patents
GB1341496A – Electrical braking of induction motors
– Google Patents
Electrical braking of induction motors
Info
Publication number
GB1341496A
GB1341496A
GB2567771*A
GB2567771A
GB1341496A
GB 1341496 A
GB1341496 A
GB 1341496A
GB 2567771 A
GB2567771 A
GB 2567771A
GB 1341496 A
GB1341496 A
GB 1341496A
Authority
GB
United Kingdom
Prior art keywords
braking
windings
diode
motor
half cycle
Prior art date
1970-03-23
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
GB2567771*A
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.)
LOGIC Sas DI G MARCHI C
Original Assignee
LOGIC Sas DI G MARCHI C
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.)
1970-03-23
Filing date
1971-04-19
Publication date
1973-12-19
1971-04-19
Application filed by LOGIC Sas DI G MARCHI C
filed
Critical
LOGIC Sas DI G MARCHI C
1973-12-19
Publication of GB1341496A
publication
Critical
patent/GB1341496A/en
Status
Expired
legal-status
Critical
Current
Links
Espacenet
Global Dossier
Discuss
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
H02P3/00—Arrangements for stopping or slowing electric motors, generators, or dynamo-electric converters
H02P3/06—Arrangements for stopping or slowing electric motors, generators, or dynamo-electric converters for stopping or slowing an individual dynamo-electric motor or dynamo-electric converter
H02P3/18—Arrangements for stopping or slowing electric motors, generators, or dynamo-electric converters for stopping or slowing an individual dynamo-electric motor or dynamo-electric converter for stopping or slowing an ac motor
H02P3/20—Arrangements for stopping or slowing electric motors, generators, or dynamo-electric converters for stopping or slowing an individual dynamo-electric motor or dynamo-electric converter for stopping or slowing an ac motor by reversal of phase sequence of connections to the motor
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
H02P3/00—Arrangements for stopping or slowing electric motors, generators, or dynamo-electric converters
H02P3/06—Arrangements for stopping or slowing electric motors, generators, or dynamo-electric converters for stopping or slowing an individual dynamo-electric motor or dynamo-electric converter
H02P3/18—Arrangements for stopping or slowing electric motors, generators, or dynamo-electric converters for stopping or slowing an individual dynamo-electric motor or dynamo-electric converter for stopping or slowing an ac motor
H02P3/24—Arrangements for stopping or slowing electric motors, generators, or dynamo-electric converters for stopping or slowing an individual dynamo-electric motor or dynamo-electric converter for stopping or slowing an ac motor by applying dc to the motor
Abstract
1341496 Controlling AC motors LOGIC SAS DI G MARCHI & C 19 April 1971 [23 March 1970] 25677/71 Heading H2J A braking system for a single or multiphase induction motor comprises, in the case of a three phase Y connected motor, the disconnection of the motor stator windings f 1 , f 2 , f 3 from the normal motor power supply line (not shown); the connection of the windings across a single phase supply A, B via a diode D1 and the connection of diodes D2, D3 across each of a pair of windings as shown such that D2 and D3 are connected in the reverse polarity to diode D1. On each positive half cycle of the supply AB a unidirectional current is applied to windings f 1 and f 2 causing a certain degree of braking and during each negative half cycle circulating currents are produced in the two closed loops D3, f 1 ,f 3 and D2,f 2 ,f 1 and generate a large magnitude braking torque which decreases with decreasing rotor speed (Fig. 6, not shown). The application of such a closed loop braking system to other stator winding arrangements is described (Figs. 7-12, not shown) and an arrangement is described in which the diode D1 is replaced by a thyristor (Fig. 13, not shown) so that the braking current may be controlled and limited means may be included for switching off the single phase supply used for braking when the rotor has stopped (Fig. 14, not shown).
GB2567771*A
1970-03-23
1971-04-19
Electrical braking of induction motors
Expired
GB1341496A
(en)
Applications Claiming Priority (1)
Application Number
Priority Date
Filing Date
Title
IT2228770
1970-03-23
Publications (1)
Publication Number
Publication Date
GB1341496A
true
GB1341496A
(en)
1973-12-19
Family
ID=11194197
Family Applications (1)
Application Number
Title
Priority Date
Filing Date
GB2567771*A
Expired
GB1341496A
(en)
1970-03-23
1971-04-19
Electrical braking of induction motors
Country Status (5)
Country
Link
US
(1)
US3678353A
(en)
BE
(1)
BE764196A
(en)
DE
(1)
DE2113040A1
(en)
FR
(1)
FR2084862A5
(en)
GB
(1)
GB1341496A
(en)
Families Citing this family (7)
* Cited by examiner, † Cited by third party
Publication number
Priority date
Publication date
Assignee
Title
US3789284A
(en)
*
1972-07-06
1974-01-29
Modine Mfg Co
Air moving means drive system
US4393344A
(en)
*
1979-02-22
1983-07-12
Whellams Geoffrey E
Squirrel cage induction motors
IN152808B
(en)
*
1980-06-02
1984-04-14
Siemens Ag
FI64255C
(en)
*
1981-03-04
1983-10-10
Elevator Gmbh
HASTIGHETSREGLERINGSSYSTEM FOER KORTSLUTNINGSMOTOR
EP0238502A1
(en)
*
1985-02-05
1987-09-30
Väinö KARJALAINEN
A method of and a device for braking an asynchronous motor
FI121493B
(en)
*
2007-07-26
2010-11-30
Kone Corp
with electric motor
US8878468B2
(en)
*
2011-04-29
2014-11-04
Pratt & Whitney Canada Corp.
Electric machine assembly with fail-safe arrangement
Family Cites Families (6)
* Cited by examiner, † Cited by third party
Publication number
Priority date
Publication date
Assignee
Title
US2445430A
(en)
*
1947-02-21
1948-07-20
Westinghouse Electric Corp
Induction motor braking system
US2818539A
(en)
*
1955-06-16
1957-12-31
Barber Colman Co
Control apparatus for alternating current motors
US2929977A
(en)
*
1957-10-04
1960-03-22
British Thomson Houston Co Ltd
Dynamic braking of induction motors
US2922097A
(en)
*
1958-05-02
1960-01-19
British Thomson Houston Co Ltd
Dynamic braking of induction motors
GB971927A
(en)
*
1962-01-15
1964-10-07
Ass Elect Ind
Improved circuit arrangement for braking a.c. motors
US3412304A
(en)
*
1965-10-23
1968-11-19
Matthew C. Baum
Motor stopping and reversing circuits
1971
1971-03-12
BE
BE764196A
patent/BE764196A/en
unknown
1971-03-17
US
US125073A
patent/US3678353A/en
not_active
Expired – Lifetime
1971-03-18
DE
DE19712113040
patent/DE2113040A1/en
active
Pending
1971-03-19
FR
FR7109652A
patent/FR2084862A5/fr
not_active
Expired
1971-04-19
GB
GB2567771*A
patent/GB1341496A/en
not_active
Expired
Also Published As
Publication number
Publication date
DE2113040A1
(en)
1971-10-07
BE764196A
(en)
1971-08-02
FR2084862A5
(en)
1971-12-17
US3678353A
(en)
1972-07-18
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Legal Events
Date
Code
Title
Description
1974-05-01
PS
Patent sealed [section 19, patents act 1949]
1977-11-16
PLNP
Patent lapsed through nonpayment of renewal fees
