Electrical generator or motor structure – Dynamoelectric – Rotary
Patent
1989-06-19
1990-12-18
Skudy, R.
Electrical generator or motor structure
Dynamoelectric
Rotary
310114, 310154, 310181, H02K 122
Patent
active
049788787
ABSTRACT:
Electric multipolar machine, comprising a first machine part (1) with a magnetically soft outer element, a second machine part (3) arranged coaxially relative to the first machine part, with a magnetically soft inner element, provided with at least three teeth (17-19) and active coils (23, 24, 25), permanent magnets arranged in a circular path and ending in pole faces (31A1-A4, 31B1-B4, 31C1-C4), which mate with tooth faces (15A-H) across an air gap (35, 37), and a machine shaft (5), about which one of the abovementioned machine parts is rotatable relative to the other machine part. The outer element of the first machine part has at least one toothed magnetically soft disc-shaped plate (9, 11), which is provided with tooth faces distributed uniformly over the periphery of the plate. The magnets are disposed on the teeth of the second machine part, the pole faces being arranged in groups, with at least three groups of magnets being present, and the adjacent pole faces in each of the abovementioned groups having an opposite polarity. The pitch of the tooth faces, measured over a circle going through the tooth faces, is approximately twice the pitch of the pole faces in each of the abovementioned groups, measured over the same circle.
REFERENCES:
patent: 3469134 (1969-09-01), Beyersdorf
patent: 4563602 (1986-01-01), Nagasaka
patent: 4658166 (1987-04-01), Oudet
patent: 4682067 (1987-07-01), Oudet
patent: 4745312 (1988-05-01), Nagasaka
McGraw-Hill Dictionary of Scientific and Technical Terms, (no month) 1978, New York, N.Y. (pp. 332, 526).
Skudy R.
Tiegerman Bernard
U.S. Philips Corporation
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