過渡状態を利用した誘導機の速度と二次抵抗の同時推定 [in Japanese] On-line simultaneous estimations of the speed and the secondary resistance under the transient states of Induction Motor [in Japanese]
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In the speed sensorless control of the induction motor, the machine parameters (especially the secondary resistance <i>R</i><sub>2</sub>) have a strong influence to the speed estimation. It is known that the simultaneous estimation of the speed and <i>R</i><sub>2</sub> is impossible in the slip frequency type vector control, because the secondary flux is constant. But the secondary flux is not always constant in the speed transient state. In this paper the <i>R</i><sub>2</sub> estimation in the transient state without adding any additional signal to the stator current is proposed. This algorithm uses the least mean square algorithm and the adaptive algorithm, and it is possible to estimate the <i>R</i><sub>2</sub> exactly. This algorithm is verified by the digital simulations and the experiments.
- IEEJ Transactions on Sensors and Micromachines
IEEJ Transactions on Sensors and Micromachines 118(12), 1409-1416, 1998-12-01
The Institute of Electrical Engineers of Japan