Polyphase motor

Details Polyphase motor Polyphase motor

2002-07-12

2008-12-16

Benson, Walter (Department: 2837)

Electricity: motive power systems

Synchronous motor systems

Brushless motor closed-loop control

C318S400420, C318S400380

Reexamination Certificate

active

07466092

ABSTRACT:
A multiphase motor includes a fixed part or stator energized by electric coils and a mobile part or rotor including N pairs of poles radially magnetized in alternate directions, N being not less than 4 while being other than a multiple of 3, and the stator including P×9 identical poles spaced apart by 40°/P, the stator poles being assembled consecutively by three so as to define a phase with a W-shaped circuit, assembling three consecutive stator poles, the central stator pole bearing the winding of the phase. At least one element for detecting the position of the rotor is arranged in a common stage with the stator poles, in a housing substantially equidistant between two consecutive stator poles not belonging to a common phase.

REFERENCES:
patent: 4858044 (1989-08-01), Crapo
patent: 4905110 (1990-02-01), Krum et al.
patent: 5880551 (1999-03-01), Prudham
patent: 5909072 (1999-06-01), Muller
patent: 6034499 (2000-03-01), Tranovich
patent: 6104152 (2000-08-01), Coles et al.
patent: 2001/0051098 (2001-12-01), Kenney et al.

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