Impact of Airgap on the Performance of 3-Phase Permanent Magnet Hybrid Stepper Motor

Onsal, M.; Demir, Y.; Aydın, Metin; Guven, M.K.

doi:10.1109/iecon48115.2021.9589260

Cited by 4 publications

(2 citation statements)

References 10 publications

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“…Achieving such a small step means a construction with 300 teeth in the rotor, which requires a very refined production. To make things even more challenging, the HSM are machines with very small air gaps of fractions of millimeters [3].…”

Section: Introductionmentioning

confidence: 99%

Analyzing a Three Hundred Teeth Bi-Phase Hybrid Stepper Motor With Different Numbers of Pole Pairs

ICHIM,

CRAIU,

POPESCU

2023

RRST-EE

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The paper presents numerical models of a bi-phase, 0.3° full step hybrid stepper motor (HSM), with 16, 24, 32, 40, and, respectively, 48 poles in the stator. For the motor to move with a constant step angle, the stator and the rotor teeth must be shifted against each other with an angle of zero, 90, 180, and 270 electric degrees for each four consecutive stator poles. Due to this, bi-phase steppers with the number of poles in the stator different than eight are hardly seen. Therefore, to allow the construction of HSMs with different numbers of poles, some of the stator poles must be shifted from their symmetrical position. The five topologies' HSM detent and holding torque characteristics and their geometrical and constructive differences are presented. The Finite Element Method (FEM) based models are developed using the professional software COMSOL Multiphysics.

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Section: Introductionmentioning

confidence: 99%

Analyzing a Three Hundred Teeth Bi-Phase Hybrid Stepper Motor With Different Numbers of Pole Pairs

ICHIM,

CRAIU,

POPESCU

2023

RRST-EE

View full text Add to dashboard Cite

show abstract

“…The permanent magnet shape of the motor is also optimized in [20]. The authors of [21] analyzed the air gap of the motor for optimum torque production in a given volume. In [22], the authors designed a motor with high torque density and low torque ripple by varying the interpole iron width for the rotor.…”

Section: Introductionmentioning

confidence: 99%

A Study on the Detent Torque and Holding Torque of a Micro-Claw Pole Stepper Motor

Sun

Wang

et al. 2022

Micromachines

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The micro-claw pole stepper motor is widely used in the field of camera modules and VR focusing. The influence of torque ripple on positioning accuracy becomes more obvious with a decrease in motor volume. In order to reduce the torque ripple of the micro-claw stepper motor and increase the load capacity of the motor, the torque of the motor is simulated by using finite element software. Firstly, the influences of four parameters, namely air gap, magnet thickness, claw thickness and claw height, on the detent torque and holding torque of the claw permanent magnet stepper motor are obtained through the Taguchi experiment. The Signal-to-noise ratio (SNR) of each factor to the response was calculated and the degree of influence of the four parameters on the detent torque and holding torque of the micro-claw pole permanent magnet stepper motor was determined. Then, the optimal value of each factor to reduce the detent torque and increase the holding torque was obtained through optimization analysis. Finally, experiments were carried out to test the holding torque of the motor, and the accuracy of the results was verified by comparing the test values with the simulation values. According to the analysis of the paper, the response delta of air gap to detent torque is the largest, reaching 5.99, and that to holding torque is 0.73. The response delta of the magnet thickness to the detent torque is 5.87, and the response delta to the holding torque is 1.52. The optimized parameters obtained by optimization analysis reduce the detent torque of the motor by 26.74% and increase the holding torque by 18.35%. It is found that air gap and permanent magnet thickness have the greatest influence on the detent torque and holding torque of a micro-claw permanent magnet stepper motor, followed by claw thickness and claw height. Among them, the air gap has more influence on the detent torque than on the holding torque, and the thickness of the permanent magnet has more influence on the holding torque than on the detent torque.

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3D FEM Model of a Hybrid Stepper Using Scalar-Vector Potential Formulations

Craiu

Ichim

Popescu

2023

2023 13th International Symposium on Advanced Topics in Electrical Engineering (ATEE)

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Impact of Airgap on the Performance of 3-Phase Permanent Magnet Hybrid Stepper Motor

Cited by 4 publications

References 10 publications

Analyzing a Three Hundred Teeth Bi-Phase Hybrid Stepper Motor With Different Numbers of Pole Pairs

Analyzing a Three Hundred Teeth Bi-Phase Hybrid Stepper Motor With Different Numbers of Pole Pairs

A Study on the Detent Torque and Holding Torque of a Micro-Claw Pole Stepper Motor

3D FEM Model of a Hybrid Stepper Using Scalar-Vector Potential Formulations

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