Control device for synchronous motor
Abstract
Abstract Translated from Japanese (57)【要約】 【課題】 埋め込み磁石型同期電動機の制御装置におい て、リラクタンストルクが電流に対して非線形であるた め出力トルク精度が確保できず、その結果、工作機械の 同期タップ等の位置制御を行う用途に適用した場合に位 置誤差を生じるという課題がある。 【解決手段】 入力されたトルク指令値Tq*と所定値T refの大小関係に応じてdq軸電流指令値の算出方式を 切り換えることによって出力トルクとトルク指令値の関 係を線形化し、常に高精度なトルク制御を実現する。 (57) [Summary] [PROBLEMS] In a control device for an embedded magnet type synchronous motor, output torque accuracy cannot be ensured because reluctance torque is nonlinear with respect to current, and as a result, position control of a synchronous tap or the like of a machine tool. However, there is a problem that a position error is generated when the method is applied to an application for performing the above. SOLUTION: An input torque command value Tq * and a predetermined value T By switching the calculation method of the dq-axis current command value according to the magnitude relationship of ref, the relationship between the output torque and the torque command value is linearized, and high-precision torque control is always realized.
Inventors
- 👤 Motosumi Yura
- 👤 元澄 由良
Bibliographic Details
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