A novel efficiency optimization scalar control technique for industrial IPMSM drives

The paper deals with analysis and implementation of a new scalar control for industrial IPMSM drives which exploits an effective energy saving strategy. In particular, such a control forces the condition of maximum torque per ampere simply by assigning a polynomial relationship between the torque angle and stator current phase. In the paper a detailed study of the control strategy is provided, showing the effectiveness of the proposed method through simulations and experimental results.