Research

A. M. Sengupta's M. Tech Thesis: "Construction, analysis and performance of Switched Reluctance and Brushless DC motors ", 1994, IIT Kharagpur ,  W.B., India, under Prof. K Venkataratnam.

B. M. Sengupta's Ph.D Thesis: "Theory, performance prediction and indirect rotor position sensing of a Switched Reluctance Motor under bulk saturation", 1999, IIT Kharagpur ,  W.B., India, under Prof. K Venkataratnam and Prof. Tapas K. Bhattacharya.

C. Current Research areas include:

1. Power Electronic converters: Design, fabrication and testing of (a) IGBT, MOSFET, BJT and SCR based VSI, CSI, DC-DC converters, Rectifiers, (b) Generalised Power Converters, (c) SiC based high frequency Power converters, (d) Power Converters for special applications like induction heating, welding, repulsion type levitation and (e) Power Converters for electric drives

2. Electrical Machines and drives: Design, fabrication, analysis and testing of (a) conventional rotary, (b) axial flux type rotary versions of Switched reluctance motors, BLDC, PMSM and Syn reluctance Motors, (c) lienar motors like LIM, LPMSM, and (d) tubular linear induction motor - TLIM

3. Special Electromagnetics applications :  Design, fabrication, analysis and testing of (a) Electromagnetic attraction and repulsion type levitation systems (b) induction hesating coils and (c) welding set-ups

4. Power systems applications of PE converters: Fabrication and testing of Power electronic converter based-FACTS devices - STATCOM and UPQC.

D. Development of experimental set-ups

(i) Experimental set-ups developed fully in the laboratory and in operation

    1. Attraction type electromagnetic levitation apparatus of a 62gm steel ball and a 148 gm cuboid steel             plate under controlled electromagnet.

     2.Repulsion type electromagnetic levitation mechanism for a 150 gm circular aluminium plate fed from     a 300 Hz CSI.

    3. Power Electronic Converter and DSP-based controller for variable speed drive using a  4 kW,     4- phase Oulton SR Motor.

    4. Closed loop buck-chopper based drive for a 1 hp, 220 V DC separately excited motor drive.

    5. Design and fabrication of NdFeB permanent magnet based 1 hp, 48 V, 2000 rpm BLDC motor and         its  power electronic converter

    6. Implementation of controller for BLDC motors on FPGA platform

    7. Design, development, fabrication and practical tests on a 3-phase, 1-hp, 48 V, SRM for application         in low power traction.

    8. Design and fabrication of Power electronic converter and its control on FPGA platform for the         above 3-phase  SR Motor

    9. Design and development of a 2 kW, 400 A, 10 kHz Induction Heating Coil

  10. Design and development of  a thyristorised Current Source Inverter for a 2 kW, 10 kHz IH coil with         auxiliary start-up network.

  11. Design and development of  a thyristorised Current Source Inverter  with front-end buck converter for   a 2 kW, 10 kHz IH coil with auto-start up features to eliminate auxiliary start-up network

  12. Design and development of IGBT-based forced commutated CSI for the above IH coil with ZVS features.

 13.   Design and development of IGBT-based CSI for the above IH coil with resonant frequency tracking for  auto-synchronisation capability.

 14. Design and development of IGBT-based CSIs operating from a common DC-link for application in series  cascaded multiple IH coils with resonant frequency tracking for auto-synchronisation capability at distinct  resonant frequencies for each IH unit.

 15. Design and development of DSP-controlled 10 KVAr, 400 V STATCOM as FACTS-based shunt         compensating device.

 16. Design and development of DSP-controlled 10 KVA, 400 V UPFC as FACTS-based series-shunt         compensating device consisting of STATCOM and DVR sections.

 17. Design, development, fabrication and practical tests on a 4-phase, 3 kW, 560 V SRM and its closed loop  power controller.

 18. Design, development, fabrication and practical tests on a 4-phase, 0.5 kW, 48 V double-sided axial-flux         SRM and its closed loop power controller.

 19. Design and fabrication of SmCo permanent magnet based 1 hp, 48 V, 2000 rpm BLDC motor and its         power electronic converter for application in forced draft fans.

 20. Design and fabrication of NdFeB permanent magnet based 2 KVA, 325 V, 1000 rpm Permanent Magnet Synchronous Generator and its power electronic converter for application in power generation from micro-wind and pico-hydel sources.

  21. Design and fabrication of NdFeB permanent magnet based 5.5 kW, 400 V, 750 rpm Permanent Magnet Synchronous Motor and its power electronic converter for application in centrifugal pumps.

  22. Design and fabrication of a 2kW, 100 A PMRTC-based welding converter using power silicon-MOSFETs         operating at 50 kHz.

  23. Design and fabrication of a 2kW, 100 A PMRTC-based welding converter using power SiC-MOSFETs         operating at 100 kHz.

  24. Design and fabrication of a 55 kVA, 200 A general purpose power stack using SiC-MOSFETs         operating at   500 kHz.

  25. Design, development, fabrication and practical tests on a 3-phase, 0.75 hp, 400 V, Linear Induction         Motor.

   26. Design, development, fabrication and practical tests on a 3-phase, 0.75 hp, 400 V,         Permanent-    magnet Synchronous Motor Linear Motor with surface-mounted magnets.

   27. Design, development, fabrication and practical tests on a 3-phase, 0.75 hp, 400 V, Tubular Linear         Induction Motor.

  28. Design and development of  an IGBT-based voltage Source Inverter  fed 2 kW, 10 kHz IH coil with         auto-start up features.

  29. Design (complete), fabrication (ongoing), analysis (complete) and development of 5 kW, 750 rpm, 400 V, interior permanent magnet based-PMSM and its power controller.

  30. Design (complete), fabrication (ongoing), analysis (complete) and development of 0.75 hp, 3000 rpm, 400 V, interior permanent magnet based-BLDC motor and its power controller.

31. Design and fabrication of NdFeB permanent magnet based 2 KVA, 325 V, (200 rpm prime-mover speed), concentrated-coil Permanent Magnet Synchronous Generator and its power electronic converter for application in power generation from micro-wind and pico-hydel sources.

(ii) Set-ups under development

 1. Design, development, fabrication and practical tests on a 4-phase, 2 kW, 560 V SRM and its closed     loop  power controller for application in submersible pumps.

 2. Design, development, fabrication and practical tests on a 4-phase, 0.25 hp, 48 V double-sided     axial- flux SRM and for direct wheel applications.