励磁電流フィードバックによる誘導機制御系の安定化法

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概要

• 論文の詳細を見る

• The vector control is one of the method to obtain superior control performance to a direct current motor for an induction motor driven by the inverter. As to the vector control method, the inverter slip frequency ω2 of an induction motor is controlled for the purpose of the torque being proportional to the torque current. However, exact vector control cannot be achieved, because the secondary resistance varies extremely by the rotor temperature.To improve this problem, several countermeasures have been proposed. But most of these methods need complicated system construction or any other parameters exactly.In this paper, auto-tuning system to adjust phase deviation between γ-δ and d-q axis due to estimating error of secondary resistance to zero by using exciting current differnce is proposed. In this system, only a PI compensator is needed in the loop to decide angular frequency. By using gain and phase margin based on frequency response, optimam gain value or influence of other parameter are evaluated easily. Therefore, stable and high sensible vector control can be achieved.This paper also describes the field oriented vector control system without magnetic sensor by applying the principle of this method. Furthermore, the method of estimating ωm and the performance characteristics of the vector control system without speed sensor are discussed. The experimental result of the tested machine shows this method is very useful for practical applications.

• 社団法人 電気学会の論文

著者

• 山村 直紀

  名古屋工大

• 細野 勇

  MECアロイ

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