Rotor position detection in an electrical machine

Data processing: measuring – calibrating – or testing – Calibration or correction system – Position measurement

Reexamination Certificate

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Reexamination Certificate

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07640128

ABSTRACT:
An electrical machine has a rotor position transducer which provides output signals to a control system. The output signals contain errors due to component shortcomings and manufacturing imperfections. A method is disclosed which is able to determine the errors in the signals by the use of a position detection algorithm so as to provide compensations to the control system of the machine. The compensations may be stored in the control system and used to improve the accuracy of the transducer output signals, thus improving the output of the machine.

REFERENCES:
patent: 4216419 (1980-08-01), Van Dam et al.
patent: 4972333 (1990-11-01), Ishikawa
patent: 5170365 (1992-12-01), Collopy et al.
patent: 5225746 (1993-07-01), von der Heide et al.
patent: 5467025 (1995-11-01), Ray
patent: 5786646 (1998-07-01), Newberg et al.
patent: 5821648 (1998-10-01), Allinson
patent: 5877568 (1999-03-01), Maes et al.
patent: 6147626 (2000-11-01), Sakakibara
patent: 6586903 (2003-07-01), Moriarty
patent: 6661140 (2003-12-01), Agnes et al.
patent: 6826499 (2004-11-01), Colosky et al.
patent: 2001/0004196 (2001-06-01), Marcinkiewicz
patent: 2001/0010453 (2001-08-01), Marcinkiewicz
patent: 2002/0125852 (2002-09-01), McClelland et al.
patent: 2002/0193935 (2002-12-01), Hashimoto et al.
patent: 2006/0005605 (2006-01-01), Moriarty
patent: 2006/0036384 (2006-02-01), Moriarty et al.
patent: 2006/0036385 (2006-02-01), Tankard
patent: 0 391 647 (1990-10-01), None
patent: 0 573 198 (1993-12-01), None
patent: 0 573 198 (1993-12-01), None
patent: 0 780 966 (1997-06-01), None
patent: 1 014 556 (2000-06-01), None
patent: 1 109 309 (2001-06-01), None
Takashi Kosaka, Fumiki Tanahashi, Nobuyuki Matsui and Masami Fujitsuna, Current Zero Cross Detection-based Position Sensorless Control of Synchronous Reluctance Motors, IEEE 2002, p. 1610-1616.
M. E. Hague, L. Zhong and M. F. Rahman in a Sensorless Initial Rotor Position Estimation Scheme for a Direct Torque Controlled Interior Permanent Magnet Synchronous Motor Drive (2001 IEEE, p. 879-884).
Md. Enamul Haque, Member, IEEE, Limin Zhong, and Muhammed Fazlur Rahman in a Sensorless Initial Rotor Position Estimation Scheme for a Direct Torque Controlled Interior Permanent Magnet Synchronous Motor Drive, IEEE Transactions on Power Electronics, vol. 18, No. 6, November 2003, p. 1376-1383.
Stephenson, et al., “The Characteristics, Design and Applications of Switched Reluctance Motors and Drives,” PCIM '93, Nürnberg, Germany, Conference & Exhibition, Jun. 21-24, 1993, pp. 1-68.

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