Title:
SYSTEM AND METHOD OF SPEED DETECTION IN AN AC INDUCTION MACHINE
Document Type and Number:
WIPO Patent Application WO/2011/158099
Kind Code:
A3
Abstract:
A system and method for detenriining rotor speed of an AC induction machine is disclosed. The system is programmed to estimate a rotor speed of the induction machine according to a linear speed estimation algorithm and based on name plate information (NPI) of the induction machine and parameters of the AC induction machine during operation thereof. The rotor speed estimation system is also programmed to estimate a rotor speed of the AC induction machine according to a frequency-domain signal processing algorithm and determine if the rotor speed estimated thereby is valid. If the rotor speed estimated by the frequency-domain signal processing algorithm is valid, then a tuned rotor speed of the AC induction machine is estimated according to the linear speed estimation algorithm and based, in part, on the rotor speed estimated by the frequency-domain signal processing algorithm.
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Inventors:
LU BIN (US)
SHARMA SANTOSH K (IN)
YAN TING (US)
DIMINO STEVEN A (US)
SHARMA SANTOSH K (IN)
YAN TING (US)
DIMINO STEVEN A (US)
Application Number:
PCT/IB2011/001344
Publication Date:
August 23, 2012
Filing Date:
June 15, 2011
Export Citation:
Assignee:
EATON CORP
LU BIN (US)
SHARMA SANTOSH K (IN)
YAN TING (US)
DIMINO STEVEN A (US)
LU BIN (US)
SHARMA SANTOSH K (IN)
YAN TING (US)
DIMINO STEVEN A (US)
International Classes:
G01P3/46; G01P3/48; G01P3/489; H02P23/14
Foreign References:
| US20090108797A1 | 2009-04-30 |
Other References:
HURST K D ET AL: "A self-tuning, closed-loop flux observer for sensorless torque control of standard induction machines", POWER ELECTRONICS SPECIALISTS CONFERENCE, 1995. PESC '95 RECORD., 26TH ANNUAL IEEE ATLANTA, GA, USA 18-22 JUNE 1995, NEW YORK, NY, USA,IEEE, US, vol. 2, 18 June 1995 (1995-06-18), pages 792 - 798, XP010150643, ISBN: 978-0-7803-2730-6, DOI: 10.1109/PESC.1995.474908
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