Per Unit Approach Based Assessment of Torque Production Capability of PMSMs Operating in the Field Weakening Region

Gierczynski, Michal; Grzesiak, Lech M.

doi:10.1109/ever.2019.8813512

Cited by 3 publications

(15 citation statements)

References 22 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…During such an operation, the current space-vector locus follows a path from the current limitation circle into the so-called machine characteristic current point. All these characteristics are explained in detail in [6,10].…”

Section: Calculations Based On the Non-linear Modelmentioning

confidence: 99%

“…Precise analysis of such drives requires complex magnetic field models based on a finite element method (FEM) simulation [3][4][5]. On the other hand, at the preliminary drivetrain design stage, machine dimensions and materials are not known and some simple analytic models are much more desired for this purpose [6].…”

Section: Introductionmentioning

confidence: 99%

“…Most analyses regarding an inverter-fed PMSM operating in the field-weakening region were carried out using analytical formulas basing on a simplified constant parameter model, which assumes linearity of the magnetic circuit [6][7][8][9][10][11]. The main advantage of this approach is that it allows to consider interactions between machine design and power rating utilization of the inverter.…”

Section: Introductionmentioning

confidence: 99%

“…The tight interrelationship between the design of the machine, the desired constant-power speed range and the resulting inverter and machine overrating factors was investigated in [12] based on the same simplified model. It was derived in [6] that there exist many different machine parameter sets meeting the same requirements imposed on torque vs. speed curve performance. However, incorrect selection of a particular set can lead to severe over-sizing of drive inverter power rating.…”

Section: Introductionmentioning

confidence: 99%

“…The first one, the space-vector steady-state model, is more exact, but also more complicated, since it takes into consideration non-linear flux linkage surfaces [18]. The second model, the loss-less linearized model with constant machine parameters, is less precise, but at the same time it is a very simple solution [6]. They were compared on the basis of an FEM model of the BMW i3 traction machine, which is an extreme example of a highly-saturated machine.…”

Section: Introductionmentioning

confidence: 99%

See 4 more Smart Citations

Comparative Analysis of the Steady-State Model Including Non-Linear Flux Linkage Surfaces and the Simplified Linearized Model when Applied to a Highly-Saturated Permanent Magnet Synchronous Machine—Evaluation Based on the Example of the BMW i3 Traction Motor

Gierczynski

Grzesiak

2021

Energies

Self Cite

View full text Add to dashboard Cite

This paper presents a finite element method (FEM)-based model, which describes the magnetic circuit of the BMW i3 traction machine. The model has been reconstructed based on data available in the public domain. The reader is provided with numerical data regarding flux linkage surfaces in d- and q-axes, as well as with all the information needed to develop a space-vector model of the machine in steady-state, taking into consideration the non-linearity of the magnetic circuit. Hence, the data of a highly-saturated machine from a renowned product are provided, which can serve as a reference design for research. After that, torque curve and partial load operation points are calculated. Finally, the machine model is linearized and the calculations are repeated with the simplified linearized model. The results from both models are then compared with each other. This comparison is intended to assess the magnitude of the expected inaccuracies, when simplified analytical tools are applied to highly-saturated machines (which are the backbone of automotive electrical drivetrains). It is especially important with regard to preliminary design of electrical drivetrains, as at this stage detailed machine geometry and materials are not known.

show abstract

Section: Calculations Based On the Non-linear Modelmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Comparative Analysis of the Steady-State Model Including Non-Linear Flux Linkage Surfaces and the Simplified Linearized Model when Applied to a Highly-Saturated Permanent Magnet Synchronous Machine—Evaluation Based on the Example of the BMW i3 Traction Motor

Gierczynski

Grzesiak

2021

Energies

Self Cite

View full text Add to dashboard Cite

show abstract

A Hybrid Rotor Design with Reduced Rare Earth Magnets for Traction Motors

Baghel

Nlebedim

2022

JOM

View full text Add to dashboard Cite

Modeling of the Fourth-Generation Toyota Prius Traction Machine as the Reference for Future Designs

Gierczynski,

Jakubowski,

Kupiec

et al. 2024

Energies

View full text Add to dashboard Cite

The automotive market is very competitive and demands consistently improving the technologies used and reducing the product cost and dimensions with each product model iteration. Hence, it is important to have access to well-defined reference designs of high-quality products to evaluate new ideas and technologies. This paper provides readers with a numerical model of such a high-quality product, i.e., the IPMSM-type traction motor from the fourth generation of the Toyota Prius hybrid transaxle. The presented results also serve for a discussion regarding the design decisions of the Toyota engineers and the applicability of the linearized machine model for the approximated torque calculations. In the introductory section, a brief history of the Prius model and references to the reverse engineering reports are given. Afterward, the machine dimensions, material properties, and winding configuration are described. Then, the model is validated with the torque measurements at constant speed. The simulation results are presented in the next chapters, and the numerical source data are supplied to the reader. Finally, the design philosophy of the Toyota drive is briefly discussed in comparison with the BMWi3 drive and the results are concluded in the last section.

show abstract

Per Unit Approach Based Assessment of Torque Production Capability of PMSMs Operating in the Field Weakening Region

Cited by 3 publications

References 22 publications

Comparative Analysis of the Steady-State Model Including Non-Linear Flux Linkage Surfaces and the Simplified Linearized Model when Applied to a Highly-Saturated Permanent Magnet Synchronous Machine—Evaluation Based on the Example of the BMW i3 Traction Motor

Comparative Analysis of the Steady-State Model Including Non-Linear Flux Linkage Surfaces and the Simplified Linearized Model when Applied to a Highly-Saturated Permanent Magnet Synchronous Machine—Evaluation Based on the Example of the BMW i3 Traction Motor

A Hybrid Rotor Design with Reduced Rare Earth Magnets for Traction Motors

Modeling of the Fourth-Generation Toyota Prius Traction Machine as the Reference for Future Designs

Contact Info

Product

Resources

About