An induction motor parameter estimation method

Citation
D. Lindenmeyer et al., An induction motor parameter estimation method, INT J ELEC, 23(4), 2001, pp. 251-262
Citations number
20
Language
INGLESE
art.tipo
Article
Categorie Soggetti
Eletrical & Eletronics Engineeing
Journal title
INTERNATIONAL JOURNAL OF ELECTRICAL POWER & ENERGY SYSTEMS
ISSN journal
0142-0615 → ACNP
Volume
23
Issue
4
Year of publication
2001
Pages
251 - 262
Database
ISI
SICI code
0142-0615(200105)23:4<251:AIMPEM>2.0.ZU;2-5
Abstract
The auxiliary systems of large thermal power plants are mainly driven by la rge induction motors. Their accurate modeling is essential for the analysis of black or emergency start procedures during power system restoration, wh ere auxiliaries are started from relatively small diesel, hydro, or gas tur bines, and where large voltage and frequency deviations occur. This paper p roposes a new parameter estimation method for induction motors which allows to build induction motor models from manufacturer data such as nameplate d ata, and motor performance characteristics. The models can be used for blac k and emergency start studies with the Electromagnetic Transients Program ( EMTP) or with stability programs. The method is based on a non-linear optim ization routine. Its objective function, boundaries, and constraints are de scribed in this paper, The method is first formulated neglecting saturation and then extended to allow for the saturation of the motor leakage reactan ces. It is tested to ensure that it is sufficiently robust and that its app lication gives the best agreement between model and manufacturer data. The effectiveness of the method is demonstrated for a 600-HP pump motor, such a s typically used in large thermal power plants. and by a practical emergenc y start case study. (C) 2001 Elsevier Science Ltd. All rights reserved.