GB316829A - Improvements in dynamo electric machines - Google Patents

Improvements in dynamo electric machines

Info

Publication number
GB316829A
GB316829A GB3489528A GB3489528A GB316829A GB 316829 A GB316829 A GB 316829A GB 3489528 A GB3489528 A GB 3489528A GB 3489528 A GB3489528 A GB 3489528A GB 316829 A GB316829 A GB 316829A
Authority
GB
United Kingdom
Prior art keywords
pole
armature
under
tip
macfarlane
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
GB3489528A
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to GB3489528A priority Critical patent/GB316829A/en
Publication of GB316829A publication Critical patent/GB316829A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K23/00—DC commutator motors or generators having mechanical commutator; Universal AC/DC commutator motors
    • H02K23/40—DC commutator motors or generators having mechanical commutator; Universal AC/DC commutator motors characterised by the arrangement of the magnet circuits
    • H02K23/405—Machines with a special form of the pole shoes

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Dc Machiner (AREA)
  • Synchronous Machinery (AREA)

Abstract

316,829. Macfarlane, J. C., and Macfarlane, W. A. Nov. 27, 1928. Pole-pieces.-In a development of the invention described in Specification 293,508, the field poles are not divided, but are so arranged that the air gap under the leading tip is greater than that under the trailing tip so that under short-circuit conditions the cross flux due to armature reaction will saturate the armature teeth under a part of each pole and thereby reduce the total flux passing through the armature from pole to pole to an amount which is just sufficient to keep the short-circuit current circulating in the armature winding. In one arrangement, Fig. 1, a pole of normal shape is tilted, and the trailing tip is cut away to leave a surface T, M parallel with the armature. Fig. 2 shows a modification in which part of the leading tip L, M is set back parallel to the armature. The part T of the pole may have a restricted cross section to increase the reluctance. Interpoles may be used for improving commutation, for varying the characteristic or for stabilizing the machine as described in Specification 293,508.
GB3489528A 1928-11-27 1928-11-27 Improvements in dynamo electric machines Expired GB316829A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB3489528A GB316829A (en) 1928-11-27 1928-11-27 Improvements in dynamo electric machines

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB3489528A GB316829A (en) 1928-11-27 1928-11-27 Improvements in dynamo electric machines

Publications (1)

Publication Number Publication Date
GB316829A true GB316829A (en) 1929-08-08

Family

ID=10371232

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3489528A Expired GB316829A (en) 1928-11-27 1928-11-27 Improvements in dynamo electric machines

Country Status (1)

Country Link
GB (1) GB316829A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1989006454A1 (en) * 1988-01-09 1989-07-13 Hans Hermann Rottmerhusen Commutator motor

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1989006454A1 (en) * 1988-01-09 1989-07-13 Hans Hermann Rottmerhusen Commutator motor

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