New Stator Tooth for Reducing Torque Ripple in Outer Rotor Permanent Magnet Machine
Torque ripple has been a major problem for the permanent magnet (PM) machine. It is discussed focusing on the magnetic circuit of the PM machine. Since it is known the relationship between the torque ripple and the magnetic energy that is stored in the magnetic field along the air gap of the PM ma...
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| Format: | Article |
| Language: | English |
| Published: |
Stefan cel Mare University of Suceava
2016-08-01
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| Series: | Advances in Electrical and Computer Engineering |
| Subjects: | |
| Online Access: | http://dx.doi.org/10.4316/AECE.2016.03008 |
| Summary: | Torque ripple has been a major problem for the permanent magnet (PM) machine. It is discussed focusing on
the magnetic circuit of the PM machine. Since it is known the relationship between the torque ripple and
the magnetic energy that is stored in the magnetic field along the air gap of the PM machine, fluctuation
in the magnetic energy was initially revealed. New tooth geometry was obtained by drilling holes into
stator tooth to modify this variation in the magnetic energy and the fluctuation in torque. Thus, a new
stator tooth design in outer rotor surface-mounted permanent magnet (OR-SPM) machine was proposed to
minimizing the torque ripple in this study. Improvement in torque ripple value was performed in excess
of 50% thanks to new stator tooth design. In addition, improvements have been carried out at the average
torque and total harmonic distortions (THD) of back EMF (electromotive force). |
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| ISSN: | 1582-7445 1844-7600 |