Position detection device for permanent magnetic machines

Details Position detection device for permanent magnetic machines Position detection device for permanent magnetic machines

2007-08-20

2009-11-24

Ro, Bentsu (Department: 2837)

Electricity: motive power systems

Synchronous motor systems

Armature winding circuits

C318S700000, C318S701000, C318S702000, C318S400360

Reexamination Certificate

active

07622882

ABSTRACT:
The invention indicates a correct one of multiple rotor positions. For example, the invention can determine, in a PM machine, which of two possible positions a rotor is in when the position is known only within ±π radians. If the actual rotor position is known to be one of ω and ω+π, for example as indicated by a resolver, the proposed invention can be used to determine whether the actual position is ω or ω+π.

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Stephen J. Chapman, Electric Machinery Fundamentals, Copyright 1991, 1985, McGraw-Hill, Inc, 2nd Edition, pp. 19 Thru 27 and 340-343.

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