On considering magnetic saturation with maximum torque to current control in interior permanent magnet synchronous motor drives

The influence of magnetic saturation on maximum torque to current controlle d interior permanent magnet synchronous motor drives is discussed in this p aper. A maximum torque to current condition that takes into account magneti c saturation and determines the optimal d-axis current is derived. For the implementation of the proposed controller, an experimental procedure is use d to adjust its parameters, therefore, the knowledge of the exact model is not required. Selected experimental results are presented to verify the the oretical considerations and to confirm the high performance of the suggeste d controller.