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Sensorless Control of High-speed Type PMSM in Wide Speed Range using an Iterative Adaptive Flux Observer  

Kim, Jong-Moo (한국전기연구원)
Choi, Jeong-Won (영남이공대학 전기자동화과)
Lee, Suk-Gyu (영남대 전기공학과)
Publication Information
The Transactions of the Korean Institute of Power Electronics / v.14, no.2, 2009 , pp. 168-175 More about this Journal
Abstract
This paper proposes an enhanced algorithm for sensorless control of 45,000rpm/22kw type Permanent Magnetic Synchronous Motor (PMSM) with air-foil bearing. The proposed algorithm is based on iterative adaptive flux observer for sensorless control of the motor in wide speed range by on-line estimating angle and velocity of rotor. Simulation error between actual and estimated angle of rotor is analyzed to enhance characteristics of frequency response of conventional adaptive flux observer, which results in stable response in wide range of speed. Using the iteration number for stable phase-delay characteristics, the observer enhances the dynamic characteristics of the observer within current control period. The experiment results show the reliable performance of the proposed algorithm through starting to high speed operating range.
Keywords
Adaptive flux observer; PMSM; Sensorless control; High speed motor;
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Times Cited By KSCI : 1  (Citation Analysis)
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