A mutual MRAS identification scheme for position sensorless field orientation control of induction machines
- Ohio State Univ., Columbus, OH (United States). Dept. of Electrical Engineering
A mutual Model Reference Adaptive System (MRAS) containing two models is proposed to implement a position sensorless Field Orientation Control (FOC) of an induction machine. For the rotor speed estimation, one model is used as a reference model and another is the adjustable model. Pure integration and stator leakage inductance are removed from the reference model, resulting in robust performance in low and high speed ranges. For the stator resistance identification, the two models switch their roles, that is, the reference model becomes the adjustable model and the adjustable model becomes the reference model. Assuming a brief stable rotor speed interval, the stator resistance can be tracked very well. To further improve the estimation accuracy of rotor speed and stator resistance, a simple on-line rotor time constant identification is included. This mutual MRAS scheme is a cost effective approach for position sensorless variable speed implementation. Computer simulations and experimental results are given to show its effectiveness.
- OSTI ID:
- 419496
- Report Number(s):
- CONF-9510203-; TRN: IM9706%%40
- Resource Relation:
- Conference: IEEE/Industrial Application Society conference, Orlando, FL (United States), 8-12 Oct 1995; Other Information: PBD: 1995; Related Information: Is Part Of Conference record of the 1995 IEEE Industry Applications Society, thirtieth IAS annual meeting. Volume 1; PB: 977 p.
- Country of Publication:
- United States
- Language:
- English
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