Gopinath G R

Gopinath GR

Assistant Professor
gopinath.gr@mahindrauniversity.edu.in

Dr. Gopinath G R is an Assistant Professor in the Electrical & Electronics Engineering Department at Mahindra University École Centrale School of Engineering. Prior to joining MU, he worked as a Senior Student Research associate at Indian Institute of Technology, Kanpur.

2018

  • 2018: Ph.D. in Electrical Engineering from Indian Institute of Technology, Kanpur. Specialization: Power Electronics & Drives Advisor: Prof. S P Das Topic: Application of Nonlinear Kalman filters for speed and position sensorless control of Permanent Magnet Synchronous Motor Drives.

2007

  • 2007: Master of Technology in Electrical Engineering from BMS College of Engineering, Bangalore. Specialization: Power Electronics Advisor: Prof. L Venkatesha Project title: Bond graph modeling of power electronic circuits Industrial training @Honeywell Technology Solns. Lab Pvt. Ltd., Bangalore

2005

  • 2005: Bachelor of Engineering in Electrical & Electronics Engineering from UBDT College of Engineering, Davangere. Project title: Effect of pollution on porcelain line insulators Project guide: D Sathyanarayana

2000

  • 2000: Pre-University Education from DRM Science College, Davangere.

1998

  • 1998: Karnataka Secondary Education Examination Board (SSLC) from Lourdes Boys High School, Davangere.

Professional Experience:

2017 - 2018

  • 1/4/2017 to Jan 2018: Indian Institute of Technology, Kanpur

2007 - 2010

  • 28/12/2007 to 1/1/2010: IBM India Pvt. Ltd., Bangalore – System Engineer (Software)
    Certified with IBM Bravo award for presenting the best poster “Little Emperor Problem” in the Healthcare Sharenet, Bangalore on 15/9/2008.

2006

  • 10/2006 to 12/2006: Honeywell Technology Solns. Lab Pvt. Ltd., Bangalore for industrial training

Senior Student Research associate

  • Worked in project: “Design and development of control and protection for hybrid renewable integration”. Work carried out as part of the project:
  • Design and simulation of 3-phase Active front end converter with unity power factor and DC link voltage control.
  • 3-ph grid integration of solar PV: DSOGI-PLL, control in synchronous DQ domain

Jan 2010 to Dec 2016: Tutor for the following laboratory courses

  • Introduction to Electrical Engineering
  • Electrical Machines & Energy Conversion
  • Microcontrollers and digital circuits

Tutor for the following theoretical courses

  • Introduction to Electrical Engineering

2020

  • G.R. Gopinath and S. P. Das, "Alternative Implementations of Square-root Cubature Kalman Filter for Sensorless PMSM Drives with Improved Dynamic Performance,” 2020 IET International Conference on Power Electronics, Machines and Drives (PEMD), Apr 2020, Nottingham, UK.

    • 2018

  • G.R. Gopinath and S. P. Das, “Sensorless Control of Permanent Magnet Synchronous Motor using an Adaptively tuned Square-root Cubature Kalman Filter”, The Journal of Engineering IET, 2018.
  • G.R. Gopinath and S. P. Das, “Sensorless Control of Permanent Magnet Synchronous Motor using an Adaptively tuned Square-root Cubature Kalman Filter”, 2018 IET International Conference on Power Electronics, Machines and Drives (PEMD 2018), Liverpool, UK. 2018.
  • G.R. Gopinath and S. P. Das, "An extended Kalman filter based Sensorless Permanent Magnet Synchronous Motor Drive with Improved Dynamic Performance," 2018 IEEE International Conference on Power Electronics, Drives and Energy Systems (PEDES), IIT Madras.

    • 2016

  • G.R. Gopinath and S. P. Das, "Sensorless control of Permanent Magnet Synchronous Motor using Square-root Cubature Kalman Filter," IEEE 8th International Power Electronics and Motion Control Conference (IPEMC-ECCE Asia), Hefei, China, 2016, pp. 1898-1904.
  • G.R. Gopinath and S. P. Das, "Speed and position sensorless control of Interior Permanent Magnet Synchronous Motor using Square-root Cubature Kalman filter with joint parameter estimation," 2016 IEEE International Conference on Power Electronics, Drives and Energy Systems (PEDES), Trivandrum (India), 2016, pp. 1-5.

    • 2015

  • G.R. Gopinath and S. P. Das, "A Cubature Kalman Filter based speed and position estimator for Permanent Magnet Synchronous Motor," IEEE Symposium on Sensorless Control for Electrical Drives (SLED 2015), Sydney, NSW, 2015, pp. 1-5.

    • 2014

  • G.R. Gopinath and S. P. Das, "An extended Kalman filter-based speed and position estimator for Permanent Magnet Synchronous Motor," 2014 IEEE International Conference on Power Electronics, Drives and Energy Systems (PEDES), IIT Bombay, pp. 1-5.

    • INDIAN PATENT

    (Application No. 201911017519)

    Sensorless Permanent Magnet Synchronous Motor (PMSM) drive with online stator resistance and load torque estimation.

    Summary of the invention: Adaptive Extended Kalman filter (EKF) based speed and position sensorless control of PMSM is carried out, with joint estimation of load torque and stator resistance. Estimation of load torque is shown to accommodate an increased bandwidth of speed control loop, thereby improving the transient response to step changes in load. A modified speed PI controller is used to decrease the peak overshoot in speed for step changes in reference speed at light load, and to allow full load starting of the PMSM drive. Estimation of stator resistance improves speed reference tracking, for variation in stator resistance with continuous loading of the machine. The novelty lies in using a simple adaptive technique for EKF, to improve the accuracy of resistance estimation for variable loading of the machine.

    • Sensorless Electric Drives
    • DSP and FPGA based implementation of advanced Kalman filters
    • Control of power electronic converters
    • Power Converters for renewable energy integration
    • Wind energy systems.