This paper describes a method to estimate rotor position at stand-still mode and characteristics of motor efficiency at driving mode of a permanent magnet synchronous motor without position sensor. The motor, which is additionally examined for the stator core and has a structure with closed stator slot, is partially saturated at saturable yoke by small armature current. The estimation is performed by using a vector locus of armature current response at partial magnetic saturation. We can obtain the estimation result of a maximum error, 11 degrees, in electrical angle with 6 percent of rated current
Published in:
Power Conversion Conference, 2002. PCC-Osaka 2002. Proceedings of the
(Volume:1
)
Date of Conference: 2002