GB103344A - Creación de Inventos y Patentes con Inteligencia Artificial

GB103344A – Improvements in and relating to Dynamo-electric Machines.
– Google Patents

GB103344A – Improvements in and relating to Dynamo-electric Machines.
– Google Patents
Improvements in and relating to Dynamo-electric Machines.

Info

Publication number
GB103344A

GB103344A
GB125516A
GB125516A
GB103344A
GB 103344 A
GB103344 A
GB 103344A
GB 125516 A
GB125516 A
GB 125516A
GB 125516 A
GB125516 A
GB 125516A
GB 103344 A
GB103344 A
GB 103344A
Authority
GB
United Kingdom
Prior art keywords
brushes
motor
speed
winding
commutator
Prior art date
1916-01-26
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
GB125516A
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.)

British Thomson Houston Co Ltd

Original Assignee
British Thomson Houston Co 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.)
1916-01-26
Filing date
1916-01-26
Publication date
1917-01-25

1916-01-26
Application filed by British Thomson Houston Co Ltd
filed
Critical
British Thomson Houston Co Ltd

1916-01-26
Priority to GB125516A
priority
Critical
patent/GB103344A/en

1917-01-25
Publication of GB103344A
publication
Critical
patent/GB103344A/en

Status
Expired
legal-status
Critical
Current

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Classifications

H—ELECTRICITY

H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER

H02K—DYNAMO-ELECTRIC MACHINES

H02K17/00—Asynchronous induction motors; Asynchronous induction generators

H02K17/02—Asynchronous induction motors

H02K17/34—Cascade arrangement of an asynchronous motor with another dynamo-electric motor or converter

H02K17/38—Cascade arrangement of an asynchronous motor with another dynamo-electric motor or converter with a commutator machine

Abstract

103,344. British Thomson-Houston Co., and Shuttleworth, N. Jan. 26, 1916. Alternating – current motors; rotary converters and transformers. — In the speed-regulation of an in– duction motor A, Fig. 1, by means of a commutator machine C connected to its secondary winding B, the field-magnet windings E of the commutator machine are separately excited from a commutator frequency-changer H having slip-rings K connected to the supply and provided with two sets of commutator brushes P1, P2, P3 and Q1, Q2, Q3 movable in cpposite directions. The speed of the motor A is varied by altering the spacing of the pairs of brushes P1, Q1, &c. on the commutator; the power-factor of the motor A may be adjusted by rocking the whole of the brush gear bodily in one direction. The exciter H may be unprovided with a stator winding or with a stationary iron core; the exciter is mechanically coupled to the motor A when their pole-numbers are the same. An additional leading component of excitation may be introduced into the exciting- windings E of the commutator machine to assist the speed-regulation and powerfactor improvement of the motor A both above and below synchronism, and to enable the speed of the motor A to be taken through synchronism when under load. With this object, as shown in Fig. 2, the exciter H may be provided with an additional commutator winding and a second group of » magnetizing » brushes R1 S1, R2 S2, R3 S3, the mean position of the brushes R, S, being displaced ninety electrical degrees from the mean position of’ the «speed-regulating» brushes P, Q1, and the other brushes being similarly displaced. The brush-pair R, S1 is connected in series with the brushpair P1 Q1, and the resultant voltage is impressed on one phase of the exciting-winding E, similar connexions being made for the other phases. The speed of the main motor is varied by adjustment of the brushes P, Q1 &c., and its power-factor is corrected by adjustment of the brushes R1 S, &c. To enable the main motor to pass through synchronism without any shifting of the brushes R1 S, &c., the primary winding A, B, Fig. 3, of a transformer is connected across each pair of » magnetizing » brushes R1 S1 &c., and the secondary winding C, D of the transformer is connected in series both with the primary winding and with the exciting-winding E, but is wound in the opposite sense to and possesses a larger number of turns than the primary winding. The windings for the three phases may be carried on a single closed transformer core having three legs. The exciter brushes may be moved by means of a pinion 0, Fig. 4, on the shaft of a hand-wheel engaging toothed racks M, N, the rocker for the brushes P1, P2, P3 carrying one rack, and the rocker for the brushes Q1, Q2, Q3 carrying the other rack. In the case of rolling-mill equipments employing fly-wheels, the brushes may be shifted automatically by means of a solenoid 7, Fig. 6, excited by a current proportional to the primary or secondary current of the induction motor. The solenoid plunger is attached to one end of a chain 6 passing over a sprocket-wheel 5 on the shaft of the pinion O, Fig. 4, the other end of the chain being fixed to a spring 8. The speed of the main motor is preferably kept constant up to full load and caused to drop rapidly on overloads by providing on the chain 6 a tray 9 on which weights are placed. Specifications 1457/07 and 5260/15 are referred to.

GB125516A
1916-01-26
1916-01-26
Improvements in and relating to Dynamo-electric Machines.

Expired

GB103344A
(en)

Priority Applications (1)

Application Number
Priority Date
Filing Date
Title

GB125516A

GB103344A
(en)

1916-01-26
1916-01-26
Improvements in and relating to Dynamo-electric Machines.

Applications Claiming Priority (1)

Application Number
Priority Date
Filing Date
Title

GB125516A

GB103344A
(en)

1916-01-26
1916-01-26
Improvements in and relating to Dynamo-electric Machines.

Publications (1)

Publication Number
Publication Date

GB103344A
true

GB103344A
(en)

1917-01-25

Family
ID=32243108
Family Applications (1)

Application Number
Title
Priority Date
Filing Date

GB125516A
Expired

GB103344A
(en)

1916-01-26
1916-01-26
Improvements in and relating to Dynamo-electric Machines.

Country Status (1)

Country
Link

GB
(1)

GB103344A
(en)

Cited By (1)

* Cited by examiner, † Cited by third party

Publication number
Priority date
Publication date
Assignee
Title

CN102624021A
(en)

2011-01-26
2012-08-01
江西华电电力有限责任公司
Grid connection system for screw expansion generating set

1916

1916-01-26
GB
GB125516A
patent/GB103344A/en
not_active
Expired

Cited By (2)

* Cited by examiner, † Cited by third party

Publication number
Priority date
Publication date
Assignee
Title

CN102624021A
(en)

2011-01-26
2012-08-01
江西华电电力有限责任公司
Grid connection system for screw expansion generating set

CN102624021B
(en)

2011-01-26
2014-09-10
江西华电电力有限责任公司
Grid connection system for screw expansion generating set

Información de contacto