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2020•IEEJ Transactions on Industry ApplicationsOpen access

Stability Analysis of Speed Observer-Based Speed Sensorless Vector Control System of Induction Motor

Takashi Nagano

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Abstract

Speed sensorless vector control requires accurate motor parameters, but the stator and rotor resistances vary due to the variations in motor temperature. This method requires estimations of the rotor flux and rotor speed. Since the estimations use the machine parameters, the stability of the system is sensitive to the variations of the machine parameters.

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What this paper is about

Speed sensorless vector control requires accurate motor parameters, but the stator and rotor resistances vary due to the variations in motor temperature. This method requires estimations of the rotor flux and rotor speed. Since the estimations use the machine parameters, the stability of the system is sensitive to the variations of the machine parameters.

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Available abstract

Speed sensorless vector control requires accurate motor parameters, but the stator and rotor resistances vary due to the variations in motor temperature. This method requires estimations of the rotor flux and rotor speed. Since the estimations use the machine parameters, the stability of the system is sensitive to the variations of the machine parameters.

Key concepts: Control theory (sociology), Vector control, Stator, Induction motor, Observer (physics), Rotor (electric), Stability (learning theory), Electronic speed control

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