Optimization of a High Torque Density Small Hybrid Stepper using 3D FEM Model

Craiu, Ovidiu; Ichim, Teodor Ionu; Melcescu, Leonard; Popescu, Liviu

doi:10.1109/speedam53979.2022.9842105

Cited by 6 publications

(5 citation statements)

References 10 publications

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“…Due to the characteristics' symmetry, only half of the period was computed for each curve. Despite simplifications and the reduced calculation domains, each characteristic required hours of computation [9].…”

Section: Resultsmentioning

confidence: 99%

“…At the same time, the airgap length was kept at 0.25 mm for all motors, the same SmCo32 permanent magnet was used, as well as the same current density J = 1.5 A/mm 2 in the armature windings at a constant slot fill factor kf = 0.33 (copper total area by slot area). Moreover, given that the ratio between the slot width and the tooth pitch influences the shape of the HSM holding torque and the detent torque characteristics [9,11], this ratio was kept ksl = 0.56 for all models. All HSMs have 300 teeth in the rotor, and both stator and rotor teeth are 0.6 mm in height.…”

Section: Numerical Modelsmentioning

confidence: 99%

“…However, the separation of the A and Vm domains can be anywhere if the Vm domains do not contain any current source and they do not fully encircle an A domain containing a current source. A more in-depth analysis of how the two types of domains can be chosen is presented in [13].…”

Section: Numerical Modelsmentioning

confidence: 99%

“…Analytical models are limited in producing accurate results [1,[4][5][6], as well as the hybrid analytical-numerical models or the hybrid 2D-3D numerical models, despite their reduced computational costs [4]. Due to their complexity, high computational effort, and increased computer memory requirement, the 3D FEMbased studies of the HSMs remain scars [7][8][9][10].…”

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

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: Resultsmentioning

confidence: 99%

Section: Numerical Modelsmentioning

confidence: 99%

Section: Numerical Modelsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

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

“…Such solutions are not often used but could become mainstream, as the technology is already there [2,3]. One of the main advantages is the possibility of constituting multi-motor powertrains [4], improving energy efficiency, and searching for better control [5] and optimization [6]. Therefore, the architecture of new vehicles should be adapted to integrate multiple electric motors [7,8].…”

Section: Introductionmentioning

confidence: 99%

Energy Consumption Analysis for an Ev Powertrain Using Three BLDC Identical Motors

POPESCU,

CRAIU

2023

RRST-EE

Self Cite

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Using more than one motor in an EV (Electric Vehicle) powertrain enhances the vehicle’s torque, acceleration, and speed capabilities. A more tractive force produced by the electric powertrain requires more electric current from the battery. In modern EVs, mechanical power production can be approached to the wheels reducing the mechanical losses in the transmissions. It is the case with multiple-motor powertrains. Several advantages regarding vehicle control, physical performance, and energy efficiency improvement are obtained. In the current study, a BLDC (brushless dc) motor is investigated from the efficiency point of view to build a multiple-motor powertrain. A new methodology uses analytic calculations, simulations, and physical measurements. A powertrain with three identical motors results in a new vehicle configuration. Each motor's energy consumption improvements are analyzed following a normalized testing procedure. The results are compared with those of a single-motor powertrain.

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Analysis of the Wheel Steering Influence on Energy Consumption of an EV PMSM In-Wheel Propulsion System

Popescu,

Crăciunescu,

Craiu

2024

Lecture Notes in Networks and Systems

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Optimization of a High Torque Density Small Hybrid Stepper using 3D FEM Model

Cited by 6 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

Energy Consumption Analysis for an Ev Powertrain Using Three BLDC Identical Motors

Analysis of the Wheel Steering Influence on Energy Consumption of an EV PMSM In-Wheel Propulsion System

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