### Abstract

The paper presents a sensorless sliding mode observer for the flux magnitude of the induction motor (IM) drive. In order to implement a vector control scheme for the IM, the angle of the rotor flux and the flux magnitude are needed. To obtain them, it is typical to use a stationary frame flux observer - once the α, β flux components have been estimated, they are used to compute the flux angle and the flux magnitude. However, in Indirect Field Orientation methods, such an observer is not used; then, a separate flux magnitude estimator is needed. The paper presents a flux observer that is based on a modified IM model in the rotating reference frame. This is constructed on the skeleton of a sensored observer - in order to make it sensorless, the observer is fed with a speed estimate. The paper shows that, with a certain gain design, the resulting sensorless observer is insensitive to the potential input speed inaccuracy. The observer yields an accurate flux magnitude without measuring the speed.

Original language | English (US) |
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Title of host publication | Proceedings - 2015 9th International Conference on Compatibility and Power Electronics, CPE 2015 |

Publisher | Institute of Electrical and Electronics Engineers Inc. |

Pages | 224-229 |

Number of pages | 6 |

ISBN (Electronic) | 9781479963010 |

DOIs | |

State | Published - Aug 31 2015 |

Event | 9th International Conference on Compatibility and Power Electronics, CPE 2015 - Caparica, Lisbon, Portugal Duration: Jun 24 2015 → Jun 26 2015 |

### Publication series

Name | Proceedings - 2015 9th International Conference on Compatibility and Power Electronics, CPE 2015 |
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### Other

Other | 9th International Conference on Compatibility and Power Electronics, CPE 2015 |
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Country | Portugal |

City | Caparica, Lisbon |

Period | 6/24/15 → 6/26/15 |

### Fingerprint

### All Science Journal Classification (ASJC) codes

- Electrical and Electronic Engineering
- Energy Engineering and Power Technology

### Cite this

*Proceedings - 2015 9th International Conference on Compatibility and Power Electronics, CPE 2015*(pp. 224-229). [7231077] (Proceedings - 2015 9th International Conference on Compatibility and Power Electronics, CPE 2015). Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/CPE.2015.7231077

}

*Proceedings - 2015 9th International Conference on Compatibility and Power Electronics, CPE 2015.*, 7231077, Proceedings - 2015 9th International Conference on Compatibility and Power Electronics, CPE 2015, Institute of Electrical and Electronics Engineers Inc., pp. 224-229, 9th International Conference on Compatibility and Power Electronics, CPE 2015, Caparica, Lisbon, Portugal, 6/24/15. https://doi.org/10.1109/CPE.2015.7231077

**A robust sensorless sliding mode observer with speed estimate for the flux magnitude of the induction motor drive.** / Comanescu, Mihai.

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

TY - GEN

T1 - A robust sensorless sliding mode observer with speed estimate for the flux magnitude of the induction motor drive

AU - Comanescu, Mihai

PY - 2015/8/31

Y1 - 2015/8/31

N2 - The paper presents a sensorless sliding mode observer for the flux magnitude of the induction motor (IM) drive. In order to implement a vector control scheme for the IM, the angle of the rotor flux and the flux magnitude are needed. To obtain them, it is typical to use a stationary frame flux observer - once the α, β flux components have been estimated, they are used to compute the flux angle and the flux magnitude. However, in Indirect Field Orientation methods, such an observer is not used; then, a separate flux magnitude estimator is needed. The paper presents a flux observer that is based on a modified IM model in the rotating reference frame. This is constructed on the skeleton of a sensored observer - in order to make it sensorless, the observer is fed with a speed estimate. The paper shows that, with a certain gain design, the resulting sensorless observer is insensitive to the potential input speed inaccuracy. The observer yields an accurate flux magnitude without measuring the speed.

AB - The paper presents a sensorless sliding mode observer for the flux magnitude of the induction motor (IM) drive. In order to implement a vector control scheme for the IM, the angle of the rotor flux and the flux magnitude are needed. To obtain them, it is typical to use a stationary frame flux observer - once the α, β flux components have been estimated, they are used to compute the flux angle and the flux magnitude. However, in Indirect Field Orientation methods, such an observer is not used; then, a separate flux magnitude estimator is needed. The paper presents a flux observer that is based on a modified IM model in the rotating reference frame. This is constructed on the skeleton of a sensored observer - in order to make it sensorless, the observer is fed with a speed estimate. The paper shows that, with a certain gain design, the resulting sensorless observer is insensitive to the potential input speed inaccuracy. The observer yields an accurate flux magnitude without measuring the speed.

UR - http://www.scopus.com/inward/record.url?scp=84959057214&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84959057214&partnerID=8YFLogxK

U2 - 10.1109/CPE.2015.7231077

DO - 10.1109/CPE.2015.7231077

M3 - Conference contribution

AN - SCOPUS:84959057214

T3 - Proceedings - 2015 9th International Conference on Compatibility and Power Electronics, CPE 2015

SP - 224

EP - 229

BT - Proceedings - 2015 9th International Conference on Compatibility and Power Electronics, CPE 2015

PB - Institute of Electrical and Electronics Engineers Inc.

ER -