There are various applications in industries where it has become essential to employ multiple motors to drive a common load. This necessity of multiple motor employment has aroused due to several reasons such as the presence of large loads, lack of space for a large motor, need for redundancy and process requirements. Also, there are some of the processes such as conveyor belt and mills which cannot operate with merely one motor. Any process that necessitates the employment of multiple motors to drive a common load will have to adopt load sharing arrangement which is essentially the usage of multiple motor-drive set. With the advancements that has happened in Power Electronics and Electric Drive streams, the user has a wide range of motors and drives to choose from, for load sharing. However, a study of behavior of these motors and drives when employed for load sharing is of utmost importance, as this helps the user to choose the appropriate motor -drive set for the required application. Induction motors are used in majority of the applications in industry. Scalar control and vector control are adopted for induction motor control. Understanding the behavior of induction motor under scalar and vector control in a load sharing arrangement will ease the selection of appropriate control strategy. Therefore, a comparative study of V/f and Field Oriented Control strategies for controlling induction motor in a load sharing arrangement is carried out and results are discussed

Load Sharing, Multiple Motor Drive, Torque sharing, V/f control, Field Oriented Control

[1] Rockwell Automation, “Load Sharing Applications for AC Drive” Publication Number DRIVES-WP001A-EN- P— June 2000
[2] Jaishankar Iyer, Mehdrad Chapariha, Francis Therrien, Juri Jatskevich,”Improved Torque Sharing In Multi Induction Motor VFD Systems Using Current Feedback”, 25th IEEE Canadian Conference on Electrical and Computer Engineering (CCECE), 2012.
[3] Jaishankar Iyer, Mehdrad Chapariha, Milad Gougani, Juri Jatskevich, “Torque sharing between V/F controlled vehicular wheels under slippery ground conditions”, Transportation Electrification Conference and Expo (ITEC), IEEE, 2012.
[4] Sruthi M , Chilakapati Nagamani , Ganesan Saravana Ilango, “Dynamic Load Sharing in Multi-Machine Conveyor Belt Systems”, Asia Pacific Power and Enery Engineering Conference, 2017.
[5] M. H. Haque, Senior Member, IEEE, “Determination of NEMA Design Induction Motor Parameters From Manufacturer Data”, IEEE Transactions On Energy Conversion, Vol. 23, No. 4, December 2008.
[6] Hussein Khreis, Andrea Deflorio, Wei-Lung Lee, Miguel Ruiz De Larramendi, “Sensitivity Analysis for Induction Machine Manufacturing Tolerances: Modelling of Electrical Parameters Deviation”, Twelfth International Conference on Ecological Vehicles and Renewable Energies (EVER), 2017.
[7] Rachid Beguenane, Mohamed Benbouzid, “Induction Motors Thermal Monitoring by Means of Rotor Resistance Identification” IEEE Transactions on Energy Conversion, Institute of Electrical and Electronics Engineers, Vol.14, No.3, pp-566-570, , 1999.
[8] Amit Kumar, Tejavathu Ramesh, “Direct Field Oriented Control of Induction Motor Drive”, Second International Conference on Advances in Computing and Communication Engineering, 2015