TY - GEN
T1 - Starting method for sensorless operation of slotless permanent magnet synchronous machines
AU - Batzel, Todd D.
AU - Lee, K. Y.
N1 - Funding Information:
The work outlined in this paper was supported by Office of Naval Research under Gant NOOO14-98-1-0718. Additional support W ~ Sprovided by NSF under m t INT-9605028 and ECS-9705105.
PY - 1999
Y1 - 1999
N2 - Slotless permanent magnet synchronous motors (PMSM) are receiving much attention for drive applications because of their high efficiency, high power-to-volume ratio, and their elimination of cogging torque. Furthermore, motor control without a rotational transducer is a subject that is receiving significant attention. In order to eliminate the need for high-resolution rotor position sensors, many sensorless techniques have been developed. It is well known, however, that sensorless operation is problematic at standstill-especially for a round rotor machine such as the slotless PMSM. Unless the initial rotor position is known, it is not possible to start the machine at full torque or to guarantee dither free startup. This paper presents a sensorless drive for a slotless PMSM with emphasis placed on stable startup by estimating the initial rotor position before starting. To estimate initial position, voltage pulses are applied to the stator windings. The resultant current measurements are then used to estimate the initial rotor position before starting. The proposed starting method for standstill rotor position identification is verified by experiment on a slotless PMSM.
AB - Slotless permanent magnet synchronous motors (PMSM) are receiving much attention for drive applications because of their high efficiency, high power-to-volume ratio, and their elimination of cogging torque. Furthermore, motor control without a rotational transducer is a subject that is receiving significant attention. In order to eliminate the need for high-resolution rotor position sensors, many sensorless techniques have been developed. It is well known, however, that sensorless operation is problematic at standstill-especially for a round rotor machine such as the slotless PMSM. Unless the initial rotor position is known, it is not possible to start the machine at full torque or to guarantee dither free startup. This paper presents a sensorless drive for a slotless PMSM with emphasis placed on stable startup by estimating the initial rotor position before starting. To estimate initial position, voltage pulses are applied to the stator windings. The resultant current measurements are then used to estimate the initial rotor position before starting. The proposed starting method for standstill rotor position identification is verified by experiment on a slotless PMSM.
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U2 - 10.1109/PESS.1999.787497
DO - 10.1109/PESS.1999.787497
M3 - Conference contribution
AN - SCOPUS:84873442262
T3 - 1999 IEEE Power Engineering Society Summer Meeting, PES 1999 - Conference Proceedings
SP - 1243
EP - 1247
BT - 1999 IEEE Power Engineering Society Summer Meeting, PES 1999 - Conference Proceedings
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 1999 IEEE Power Engineering Society Summer Meeting, PES 1999
Y2 - 18 July 1999 through 22 July 1999
ER -