# Prediction of torque and inductance displacement characteristics of asymmetrically slotted variable-reluctance motors using a simplified model for numerical field solution

## Abstract

For prediction of static and dynamic performance of doubly-salient motors, it is essential to know their flux linkage-position-excitation characteristics and also the static torque characteristics. At the design stage determination of these characteristics presents difficulties because of highly nonlinear behavior of the magnetic circuit. It is possible to use numerical field solution of the complete motor to obtain this information. This, however, requires expertise on a professional program and may be expensive if used to search for the best design. This paper shows that a reduced model can be used to obtain the desired information accurately. It is also shown that in fact obtaining field solutions just for a pair of teeth is enough for accurately predicting the flux linkage and torque characteristics of a motor. The approach introduced here makes possible searching for an optimum design (even on a PC) for maximizing average torque or reducing noise and vibration problems, since the effort for producing the model and computation time are greatly reduced.

- Authors:

- Publication Date:

- Research Org.:
- Middle East Technical Univ., Ankara (TR)

- OSTI Identifier:
- 20000594

- Resource Type:
- Journal Article

- Journal Name:
- IEEE Transactions on Magnetics (Institute of Electrical and Electronics Engineers)

- Additional Journal Information:
- Journal Volume: 35; Journal Issue: 5Pt3; Other Information: PBD: Sep 1999; Journal ID: ISSN 0018-9464

- Country of Publication:
- United States

- Language:
- English

- Subject:
- 32 ENERGY CONSERVATION, CONSUMPTION, AND UTILIZATION; PERFORMANCE; ELECTRIC MOTORS; TORQUE; INDUCTANCE; NUMERICAL SOLUTION; MATHEMATICAL MODELS; COMPUTER-AIDED DESIGN

### Citation Formats

```
Ertan, H.B.
```*Prediction of torque and inductance displacement characteristics of asymmetrically slotted variable-reluctance motors using a simplified model for numerical field solution*. United States: N. p., 1999.
Web. doi:10.1109/20.799074.

```
Ertan, H.B.
```*Prediction of torque and inductance displacement characteristics of asymmetrically slotted variable-reluctance motors using a simplified model for numerical field solution*. United States. doi:10.1109/20.799074.

```
Ertan, H.B. Wed .
"Prediction of torque and inductance displacement characteristics of asymmetrically slotted variable-reluctance motors using a simplified model for numerical field solution". United States. doi:10.1109/20.799074.
```

```
@article{osti_20000594,
```

title = {Prediction of torque and inductance displacement characteristics of asymmetrically slotted variable-reluctance motors using a simplified model for numerical field solution},

author = {Ertan, H.B.},

abstractNote = {For prediction of static and dynamic performance of doubly-salient motors, it is essential to know their flux linkage-position-excitation characteristics and also the static torque characteristics. At the design stage determination of these characteristics presents difficulties because of highly nonlinear behavior of the magnetic circuit. It is possible to use numerical field solution of the complete motor to obtain this information. This, however, requires expertise on a professional program and may be expensive if used to search for the best design. This paper shows that a reduced model can be used to obtain the desired information accurately. It is also shown that in fact obtaining field solutions just for a pair of teeth is enough for accurately predicting the flux linkage and torque characteristics of a motor. The approach introduced here makes possible searching for an optimum design (even on a PC) for maximizing average torque or reducing noise and vibration problems, since the effort for producing the model and computation time are greatly reduced.},

doi = {10.1109/20.799074},

journal = {IEEE Transactions on Magnetics (Institute of Electrical and Electronics Engineers)},

issn = {0018-9464},

number = 5Pt3,

volume = 35,

place = {United States},

year = {1999},

month = {9}

}