Document Type : Research paper


1 Department of Electrical Engineering, Gorgan Branch, Islamic Azad University, Gorgan, Iran

2 Plasma and Nuclear Fusion Research School, Nuclear Science and Technology Research Institute Tehran, Iran


Reliability for electric motor drive systems is very vital in some industries. Selecting an appropriate control strategy for driving an electric motor during fault conditions is one of the most important issues mainly for safety-critical applications. Recently, vector control (VC) strategies have been extensively developed for star-connected three-phase induction motor drives during single-phase cut-off fault (COF) based on two different transformation matrices (TMs). Despite the effectiveness of these methods during the fault, these control systems are very complex due to their extensive on-line computation. This paper presents two simple methods based on indirect VC (IVC) and direct VC (DVC) methods for controlling a star-connected three-phase induction motor during the fault condition. The fault in this paper is limited to single-phase COF which can occur in motor stator coils. In this paper, it is shown that using a suitable TM and some changes in the control parameters, it is possible to control the faulted drive system. Performance of the proposed control methods is verified using MATLAB software and DSP/TMS320F28335 controller board for a 0.75kW star-connected three-phase induction motor drive system. The achieved results show the good performance of the introduced control systems in different operating conditions. In addition, the results demonstrate the performance of the proposed VC strategies and that of the previous works are almost the same. However, the proposed VC methods in this paper need less modification in the structure of the standard VC strategy than the previous works.


[1]  H. Moayedirad, S. Nejad, “Increasing the efficiency of the power electronic converter for a proposed dual stator winding squirrel-cage induction motor drive using a five-leg inverter at low speeds”, J. Oper. Autom. Power Eng., vol. 6, pp. 23-39, 2018.
[2]  M. Bigdeli, D. Azizian, E. Rahimpour, “An improved big bang-big crunch algorithm for estimating three-phase induction motors efficiency”, J. Oper. Autom. Power Eng., vol. 4, pp. 83-92, 2016.
[3]  M. Hannan et al., “Optimization techniques to enhance the performance of induction motor drives: A review”, Renew. Sustain. Energy Rev., vol. 81, pp. 1611-26, 2018.
[4]  M. Jannati et al., “A review on variable speed control techniques for efficient control of single-phase induction motors: evolution, classification, comparison”, Renew. Sustain. Energy Rev., vol. 75, pp. 1306-19, 2017.
[5]  A. Datta, G. Poddar, “Improved low-frequency operation of hybrid inverter for medium-voltage induction motor drive under v/f and vector control mode of operation”, IEEE J. Emerg. Selected Top. Power Electron., vol. 8, pp. 1248-57, 2019.
[6]  M. Benbouzid, D. Diallo, M. Zeraoulia, “Advanced fault-tolerant control of induction-motor drives for EV/HEV traction applications: From conventional to modern and intelligent control techniques”, IEEE Trans. Veh. Tech., vol. 56, pp. 519-28, 2007.
[7]  S. Nagarajan, S. Reddy, “Digital simulation of fault tolerant inverter fed induction motor with a leg swap module”, Majlesi J. Electr. Eng., vol. 6, pp. 38, 2012.
[8]  R. Ribeiro et al., “Fault-tolerant voltage-fed PWM inverter AC motor drive systems”, IEEE Trans. Power Electron., vol. 51, pp. 439-46, 2004.
[9]  D. Delgado, D. Espinoza-Trejo, E. Palacios, “Fault-tolerant control in variable speed drives: a survey”, IET Electr. Power Appl., vol. 2, pp. 121-14, 2008.
[10]  A. Raisemche et al., “Two active fault-tolerant control schemes of induction-motor drive in EV or HEV”, IEEE Trans. Veh. Tech., vol. 63, pp. 19-29, 2014.
[11]  A. Ahmed,  B. Mirafzal,  N. Demerdash, “A fault tolerant technique for Δ-connected ac motor–drive systems”, IEEE Trans. Energy Conv., vol. 26., pp. 646-53, 2011.
[12]  S. Kim, J. Seok, “ High-frequency signal injection-based rotor bar fault detection of inverter-fed induction motors with closed rotor slots”, IEEE Trans. Ind. Appl., vol. 47, pp. 1624-31, 2011.
[13]  D. Kastha, B. Bose, “ Fault mode single-phase operation of a variable frequency induction motor drive and improvement of pulsating torque characteristics”, IEEE Trans. Ind. Electron., vol. 41, pp. 426-33, 1994.
[14]  A. Ahmed, N. Demerdash, “Control of open-loop PWM delta-connected motor-drive systems under one phase failure condition”, J. Power Electron., vol. 11, pp. 824-36, 2011.
[15]  A. Ahmed, N. Demerdash, “Fault-tolerant operation of delta-connected scalar-and vector-controlled AC motor drives”, IEEE Trans. Power Electron., vol. 27, pp. 3041-49, 2012.
[16]  Y. Zhao, T. Lipo, “An approach to modeling and field-oriented control of a three phase induction machine with structural unbalance”, IEEE-APEC Conf., 1996.
[17]  M. Jannati, N. Idris, M. Aziz, “Vector control of star-connected 3-phase induction motor drives under open-phase fault based on rotor flux field-oriented control”, Electr. Power Comp. Syst., vol. 44, pp. 2325-37, 2016.
[18]  M. Jannati et al., “Experimental evaluation of FOC of 3-phase IM under open-phase fault”, Int. J. Electron., vol. 104, pp. 1675-88, 2017.
[19]  R. Tabasian et al., “A novel direct field-oriented control strategy for fault-tolerant control of induction machine drives based on EKF”, IET Electr. Power Appl., 2021.
[20]  M. Jannati, N. Idris, M. Aziz, “Indirect rotor field-oriented control of fault-tolerant drive system for three-phase induction motor with rotor resistance estimation using EKF”, TELKOMNIKA Indonesian J. Electr. Eng., vol. 12, pp. 6633-43, 2014.
[21]  M. Nikpayam et al., “Fault-tolerant control of Y-connected three-phase induction motor drives without speed measurement”, Measuremen, vol. 149, pp. 106993, 2020.
[22]  R. Tabasian, M. Ghanbari, M. Jannati, “A simple method for vector control of 3-phase induction motor‎ under open-phase fault for electric vehicle applications”, J. Appl. Dynamic Syst. Control, vol. 1, pp. 1-9, 2018.
[23]  M. Jannati, N. Idris, M. Aziz, “Performance evaluation of the field-oriented control of star-connected 3-phase induction motor drives under stator winding open-circuit faults”, J. Power Electron., vol. 16, pp.982-93, 2016.
[24]  M. Nikpayam et al., “An optimized vector control strategy for induction machines during open-phase failure condition using particle swarm optimization algorithm”, Int. Trans. Electr. Energy Syst., vol. 30, pp.12669, 2020.
[25]  H. Abbasi et al., “IRFOC of induction motor drives under open-phase fault using balanced and unbalanced transformation matrices”, IEEE Trans. Ind. Electron., 2020.
[26]  B. Welchko et al., “Fault tolerant three-phase AC motor drive topologies: a comparison of features, cost, and limitations”, IEEE Trans. Power Electron., vol. 19, pp. 1108-16, 2004.
[27]  R. Tabasian et al., “Control of three-phase induction machine drives during open-circuit fault: A review”, IETE J. Res., 2020.
[28]  M. Tousizadeh et al., “Performance comparison of fault-tolerant three-phase induction motor drives considering current and voltage limits”, IEEE Trans. Ind. Electron., vol. 66, pp. 2639-48, 2018.
[29]  M. Jannati, N. Idris, Z. Salam, “A new method for modeling and vector control of unbalanced induction motors”, IEEE Energy Conv. Congr. Expos., 2012.