A Study of Cogging Torque of 8-Pole 12-Slot PM Motor Based on Analysis and Experiment

Ohguchi, Hideki; Shuto, Masao; Sakiyama, Takashi; Toba, Akio

doi:10.1541/ieejias.129.667

Cited by 1 publication

(2 citation statements)

References 6 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Figure 17 indicates that punching increases cogging torque. Therefore, magnetic annealing of the stator core is effective to reduce cogging torque, as has already confirmed experimentally (9) . The influence of punching in region B is small because only the effect of punching at the edge nearby the slot is considered in this study.…”

Section: Results Of Cogging Torque Analysis With Measured Bh Curvessupporting

confidence: 55%

“…This means that we may be able to control the amplitude of cogging torque by optimizing the magnetic properties of the stator core. We have experimentally demonstrated that magnetic annealing of the stator core reduces this component (9) . To the best of our knowledge, however, there are few reports about the relation between the magnetic properties of the stator core and the theoretical-order component of cogging torque.…”

Section: Introductionmentioning

confidence: 98%

See 1 more Smart Citation

Relation between Magnetic Properties of Stator Core and Cogging Torque in 8-pole 12-slot SPM Synchronous Motors

et al. 2015

Self Cite

View full text Add to dashboard Cite

This paper discusses the influence of the magnetic properties of the stator core on cogging torque in 8-pole 12-slot surface-mounted permanent-magnet synchronous motors from the perspective of magnetic energy. In the finite element analyses of magnetic fields with modeled stator BH curves, cogging torque decreases drastically when the shape of magnets is changed from an arc to a semi-cylindrical structure. The influence of the stator BH curve on cogging torque is dominant in the low-cogging-torque motor with semi-cylindrical magnets. This is because magnetic energies in the gap and the magnets cancel each other and the magnetic energy in the stator core is dominant in the low-cogging-torque motor. Low maximum permeability and low magnetizing force in a high-B region are preferable for stator magnetic properties to reduce cogging torque. This is explained by the behavior of harmonics in the stator magnetic energy variation. The influences of steel grade, compressive stress, and punching in the stator core on cogging torque analyses are consistent with the results for the modeled BH curves. Low grade electrical steel sheets, high compressive stress, and magnetic annealing are effective to reduce cogging torque in the described motor design.

show abstract

Section: Results Of Cogging Torque Analysis With Measured Bh Curvessupporting

confidence: 55%

Section: Introductionmentioning

confidence: 98%

Relation between Magnetic Properties of Stator Core and Cogging Torque in 8-pole 12-slot SPM Synchronous Motors

et al. 2015

Self Cite

View full text Add to dashboard Cite

show abstract

A Study of Cogging Torque of 8-Pole 12-Slot PM Motor Based on Analysis and Experiment

Cited by 1 publication

References 6 publications

Relation between Magnetic Properties of Stator Core and Cogging Torque in 8-pole 12-slot SPM Synchronous Motors

Relation between Magnetic Properties of Stator Core and Cogging Torque in 8-pole 12-slot SPM Synchronous Motors

Contact Info

Product

Resources

About