ARTICLE IN PRESS JID: FI [m1+;February 9, 2018;9:59] Available online at www.sciencedirect.com Journal of the Franklin Institute 000 (2018) 1–32 www.elsevier.com/locate/jfranklin Enhanced efficiency in vector control of a Surface-mounted PMSM drive S.M. Tripathi ∗ , Chandan Dutta Department of Electrical Engineering, Kamla Nehru Institute of Technology, Sultanpur 228118, India Received 31 July 2017; received in revised form 8 November 2017; accepted 18 January 2018 Available online xxx Abstract In this paper, emphasis has been put on providing the result of a detailed simulation study on the dynamics and efficiency of a vector-controlled voltage source inverter (VSI)-fed surface-mounted perma- nent magnet synchronous motor (SPMSM) drive; which employs firstly a model-based loss-minimization algorithm (MLMA) and secondly a binary search-based online loss-minimization algorithm (BSOLMA), so as to reduce the total controllable electrical losses without much affecting the dynamic performance of the drive. The steady-state SPMSM model taking into account the core loss has been considered. The dy- namic performances of the SPMSM drive employing individually the abovementioned loss minimization algorithms (LMAs) have been compared with that employing conventional zero d-axis current control (ZDCC) through extensive digital computer simulations. The simulation results show that efficiency of the drive enhances with the employment of the LMA. © 2018 The Franklin Institute. Published by Elsevier Ltd. All rights reserved. 1. Introduction Out of the total available electrical power, roughly 58% is consumed by the electri- cal motor driven systems [1]. Induction motors are the commonly employed electrical machines in industrial applications. Nevertheless, the induction motors have their own limitations such as the losses in the rotor circuits which prompted to utilize the per- manent magnet synchronous motors (PMSMs) as variable-speed drives recently in nu- merous applications e.g. pumps, fans, compressors, electrical vehicles and traction drives ∗ Corresponding author. E-mail addresses: mani_excel@yahoo.co.in, mani@knit.ac.in (S.M. Tripathi). https://doi.org/10.1016/j.jfranklin.2018.01.007 0016-0032/© 2018 The Franklin Institute. Published by Elsevier Ltd. All rights reserved. Please cite this article as: S.M. Tripathi, C. Dutta, Enhanced efficiency in vector control of a Surface-mounted PMSM drive, Journal of the Franklin Institute (2018), https://doi.org/10.1016/j.jfranklin.2018.01.007