GB316829A - Improvements in dynamo electric machines - Google Patents
Improvements in dynamo electric machinesInfo
- 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
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.
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)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1989006454A1 (en) * | 1988-01-09 | 1989-07-13 | Hans Hermann Rottmerhusen | Commutator motor |
-
1928
- 1928-11-27 GB GB3489528A patent/GB316829A/en not_active Expired
Cited By (1)
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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