Cogging Torque Reduction in External Rotor PM Synchronous Motors by Optimum Pole Embrace

Soyaslan, Mücahit; Avsar, Yusuf; Fenercioğlu, Ahmet; Eldoğan, Osman

doi:10.1109/ismsit.2019.8932915

Cited by 9 publications

(4 citation statements)

References 11 publications

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“…The total loads on the bearings (Tsl) are the sum of Tcs, Tcw and Owb values. For the lifetime calculation, the loads per bearing are calculated with the equations in (1)(2)(3)(4)(5)(6). As a result, the load acting per single bearing was obtained as 5381.88 N. 𝑀 𝑐𝑠 = 𝑄 + 𝑊 𝑐 + 𝑊 𝑓…”

Section: Selection Of Bearings According To Lifetime Calculationsmentioning

confidence: 99%

“…In order to move the same loads with low torques at high speeds, pulley diameters need to be further reduced. For this purpose, belt mechanisms have been used instead of rope mechanisms in recent years [6]. With the commercial use of belts made of steel and rubber, fracture defaults in belt mechanisms have been eliminated and pulley diameters have been reduced [7].…”

Section: Introductionmentioning

confidence: 99%

“…These can be listed as induction motors, permanent magnet synchronous motors, linear motors or reluctance motors [8][9][10][11][12]. Passenger comfort, motor efficiency and production costs are the main optimization parameters for the selection and design of these motors [13][14][15][16][17][18][19][20]. For this purpose, magnet geometry, stator winding, air gap, slot-pole ratio, stator tooth structures etc.…”

Section: Introductionmentioning

confidence: 99%

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Kayış Tahrikli Asansör Çekiş Makinesinin Tasarımı ve Üretimi: Çift Taraflı Kayış Sisteminin Modellenmesi

Soyaslan

Avsar

Fenercioğlu

et al. 2023

Journal of Polytechnic

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Elevator traction motors are critical components of elevator systems. After the structural analysis of the traction motor, it is necessary to proceed to the production processes for the comfortable and safe use of elevator systems. In this study, the static load values for bearing lifetime calculation, belt selection, and finite element analyses (FEA) were determined. According to calculated loads; materials, bearings, belt, pulley, brake, and encoder were selected. In order to obtain a design in accordance with elevator standards, motor parts were examined for structural analysis. Finite element analyses were carried out according to the determined maximum static load values, and a new belt elevator traction motor design that provides the safety coefficients has emerged. When the FEA analysis results of bending moments are examined; the maximum Von Mises stress acting on the motor frame and shaft was obtained 17.1 MPa and 27.62 MPa respectively. The maximum Von Mises stress was obtained under the torsional moment as 71.4 MPa and the shaft is 6.1 times safe against a torsional moment. This value is the minimum safety factor of the designed system and safety factors of bending moments are higher than this value. The designed elevator machine has got 12.9 kW rated power, 1.6 m/s cabin speed, and 1175 kg carrying capacity. The advantage of the proposed design is to eliminate the casting process with modular structure via double side belt system. The prototype of the designed motor was produced and it was observed that the motor provided the desired constraints as a result of the loading experiments.

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Section: Selection Of Bearings According To Lifetime Calculationsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Kayış Tahrikli Asansör Çekiş Makinesinin Tasarımı ve Üretimi: Çift Taraflı Kayış Sisteminin Modellenmesi

Soyaslan

Avsar

Fenercioğlu

et al. 2023

Journal of Polytechnic

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“…Another CT reduction technique, i.e. is by employing the fractional slot number has been investigated by scholars in [12], [18], [29], [35], magnet slotted studied in references [5], [18], [22], [23], [40].…”

Section: Introductionmentioning

confidence: 99%

Novel of Cogging Torque Reduction Technique for Permanent Magnet Generator by Compounding of Magnet Edge Shaping and Dummy Slotting in Stator Core

Nur

Joe

Siregar

2020

Int. J. Adv. Sci. Eng. Inf. Technol.

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This paper dealt with the investigation and implementation of the cogging torque reduction technique in permanent magnet generators with a fractional slot stator/rotor combination of 24 slot/18 pole structure. A novel of cogging torque technique in a permanent magnet generator was developed and proposed in the paper. In the study, the cogging torque reduction technique was based on the compounding of two cogging torque reduction techniques, i.e., the magnet edge shaping with dummy slotting in the stator core of the fractional slot number. By employing the CT reduction technique proposed, effects on the decreasing of tangential flux density in the air gap of the permanent magnet generator, while the normal flux density almost remained constant. The tangential flux density is one important parameter regarding the peak of cogging torque in permanent magnet generator or other electrical machine structure. The normal and tangential flux have been analyzed. The cogging torque of the permanent magnet generator was analyzed and presented in the paper. By compounding both cogging torque reduction techniques, i.e., magnet edge shaping and dummy slotting in stator teeth have been expected to achieve the cogging torque reduction. The electromagnetic performance of the permanent magnet generator was performed using a finite element analysis of FEMM 4.2. It has been proved that by combining of magnet edge shaping and dummy slotting in stator teeth can reduce the cogging torque of permanent magnet generator significantly. It has been found that the cogging torque reduction for the proposed structure around 98.08 % compared with the initial structure.

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External rotor gearless elevator machine: a new design with flanged shaft

Soyaslan,

Eldogan,

Fenercioglu

et al. 2023

Multiscale and Multidiscip. Model. Exp. and Des.

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Cogging Torque Reduction in External Rotor PM Synchronous Motors by Optimum Pole Embrace

Cited by 9 publications

References 11 publications

Kayış Tahrikli Asansör Çekiş Makinesinin Tasarımı ve Üretimi: Çift Taraflı Kayış Sisteminin Modellenmesi

Kayış Tahrikli Asansör Çekiş Makinesinin Tasarımı ve Üretimi: Çift Taraflı Kayış Sisteminin Modellenmesi

Novel of Cogging Torque Reduction Technique for Permanent Magnet Generator by Compounding of Magnet Edge Shaping and Dummy Slotting in Stator Core

External rotor gearless elevator machine: a new design with flanged shaft

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