Multi-phase claw-pole type rotary machine
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United States of America Patent
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Jul 31, 2007
Grant Date -
May 4, 2006
app pub date -
Oct 27, 2005
filing date -
Nov 2, 2004
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A two-phase or three-phase claw-pole type rotary machine comprises two or three coaxially arranged single phase rotary machine elements. Each of the rotary machine elements has a magnet rotor, a claw-pole type stator, and an annular stator winding. Claw poles of the stator are divided into a plurality of blocks and are circumferentially separated from one another. A distance between adjacent claw poles of the same polarity in each block is (.beta..sub.0-.DELTA..beta.), substantially, where .beta..sub.0 is a reference pitch when the claw poles of the same polarity are arranged equidistantly apart from one another in a range of 360.degree., .DELTA..beta. is .pi./2q, or .pi./3q and q is a number of claw poles of the same polarity in each block. The first and second rotary machine elements are circumferentially shifted from each other by 90.degree. or 120.degree..
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