Power electronics Engineer, SMPS
Resume:
Krishna Mohan Nutheti
Mob: +91-984*******
*********@*****.***
To secure a promising career that offers both a challenging and a good opportunity for growth in the field of Power Electronics.
Summary:
6 years experience in design and development of power electronics modules for aerospace, defence and auto motive applications including product design, process design and product qualification.
ACADEMIC QUALIFICATIONS
• M.TECH. in Power Electronics from Visweshwaraiah Technological University
Period: September 2002– August 2004
• B.TECH. In Electrical and Electronics from Nagarjuna University
Period: September 1997 – May 2001
Experience:
1. Currently working as Technical lead at
Goodrich Aerospace services, Bangalore, India
Duration: From October 2010
Job profile:
1. Design & Development of Power Systems for Aero space applications
2. Worked as senior design engineer at
CENTUM ELECTRONICS LTD., Bangalore,
Duration: July 2004- October 2010
Job Profile:
1.Designing of DC-DC converters for space, defence and automotive applications.
2. Design of high frequency magnetics including planar magnetics.
3. Design of EMI filters for DC-DC converters
4. Design and development of Hybrid Micro Circuits for space and industrial applications.
5. Simulation studies using PSPICE and LTSPICE.
6. DFMEA, parts stress analysis and failure analysis.
7. Thermal analysis and estimation of thermal resistance.
8. Prototype development including process and design verification.
9. Prototype Testing including all environmental tests.
10. Preparation of the test reports.
PAPERS PRESENTED
1.”Development of space grade power hybrid for Reaction Wheel drive electronics: Challenges and criticalities” Krishnamohan Nutheti, Prabhu Dass, GR Joshi, Vedprakash, Vinod S Chippalkatti, and K.S.Mani, K.P.Lilly, M.Suresh, T.R. Haridas and Robert Devasahayam. Presented at EPMC-09 at Italy.
2. “Theoretical v/s Practical evaluation of thermal resistance of power MOSFET solder die attach process” Krishnamohan Nutheti, Prabhu Dass and Vinod S Chippalkatti. Presented at EMIT-2008 at Bangalore.
3.” Design and Process considerations for Thick film Power Modules” Krishnamohan Nutheti, Prabhu Dass, GR Joshi, Vedaprakash.G and Vinod S Chippalkatti. Presented at EMIT-2008 at Bangalore.
4. “Design and Development of High Voltage High Power Operational Amplifier using Thick Film Technology”. Krishna Mohan Nutheti, Vinod S Chippalakatti and Shashikala Prakash. Published in Sadhana Vol. 33, Part 5, October 2008, pp. 713–720.
5. “Development of a thick film Power Op-amp” Krishnamohan Nutheti, Gayathri Kumari MB, Vinod S Chippalkatti and V Manoharan. Presented at IINC-2006 at Hyderabad.
KEY PROJECTS HANDLED /ACHIVEMENTS
1.“40 WATT DC-DC CONVERTER FOR SPACE APPLICATION”
Client : ISAC (ISRO)
Duration : 8 months.
Team size : 3
Tools used : AUTOCAD-14, Pspice.
Description:
40 watt DC-DC converter is a forward converter with resonant reset having three continuous outputs using voltage mode control with voltage feed forward control. It’s developed with Hybrid technology. The design of EMI/EMC as per MIL.STD-461C.The overall Efficiency is better than 75%.
Application: The main on board power supply for INSAT series satellites
2.“20 WATT DC-DC CONVERTER FOR SPACE APPLICATION”
Client : ISAC (ISRO)
Duration : 8 months.
Team size : 3
Tools used : AUTOCAD-14, Pspice.
Description:
20 watt DC-DC converter is a forward converter with voltage mode control. It’s developed with Hybrid technology. The design of EMI/EMC as per MIL.STD-461D.The overall Efficiency is better than 75%.
3.“HYBRID Controller for BLDC MOTOR”
Client : NSTL (DRDO)
Duration : 9 months.
Team size : 3
Tools used : CADSTAR 6.0, Pspice, AutoCAD
Description:
Hybrid controller is a BLDC motor controller designed based on MC33035 chip. It will be used in underwater missiles (torpedo) for direction control. This is a mission critical module for Torpedo. This is designed and qualified as per Military requirements.
4. “HYBRID Controller for Reaction wheel Drive”
Client : IISU (ISRO)
Duration : 9 months.
Team size : 3
Tools used : CADSTAR 6.0, Pspice, AutoCAD
Description:
Hybrid controller is a BLDC motor controller designed based on discrete commutation logic. It will be used in AOCS of satellite. This is a mission critical module for AOCS. This is designed and qualified as per Space requirements.
5. “SOLID STATE RELAY FOR LAUNCH VEHICLE APPLICATION”
Client : VSSC (ISRO)
Duration : 6 months.
Team size : 3
Tools used : CADSTAR 6.0, Pspice.
Description:
Solid state relay is a optically isolated DC relay works with TTL input and 50V/25A on load side. This is a mission critical relay module for launch vehicles. This is designed and qualified as per Military requirements.
6. “THICK FILM POWER AMPLIFIER”
Client : NPOL (DRDO)
Duration : 6 months.
Team size : 3
Tools used : CADSTAR 6.0, Pspice, AutoCAD
Description:
Thick film power amplifier is linaer power amplifier with classAB output. This works in audio frequency with 80V supply voltage. This will be used for under water telephone applications. This is designed and qualified as per Military requirements.
7. “THICK FILM HIGH VOLTAGE POWER OP AMP”
Client : NAL
Duration : 6 months.
Team size : 3
Tools used : CADSTAR 6.0, Pspice, AutoCAD
Description:
Thick film High voltage power opamp is linaer power amplifier with classAB output. This works in audio frequency with 400V supply voltage. This will be used for active vibration structure of aircraft. This is designed and qualified as per Military requirements.
8. “POWER CONDITIONING AND PROCESSING UNIT (PCPU)”
Client : SAC (ISRO)
Duration : 8 months.
Team size : 3
Tools used : CADSTAR 6.0, AUTOCAD-14, Pspice.
Description:
PCPU is a multi-output switch mode power supply having pulsed as well as continuous output voltages. It is realized using flyback topology with discontinues conduction mode operation. The flyback transformer is implemented with planar technology. The design of EMI/EMC as per MIL.STD-461D/462D.The overall Efficiency is better than 70%.
9. “30 WATT DC-DC CONVERTER FOR SPACE APPLICATION”
Client : ISAC (ISRO)
Duration : 8 months.
Team size : 3
Tools used : AUTOCAD-14, Pspice.
Description:
30 watt DC-DC converter is push pull converter with three continuous outputs using current mode control. It’s developed with Hybrid technology. The design of EMI/EMC as per MIL.STD-461D/462D.The overall Efficiency is better than 70%.
Application: The main on board power supply for INSAT series satellites
My role in these projects:
• Design, Development and Fabrication of Hybrid microcircuits.
• Design, Development, fabrication and Testing of transformer and Inductors.
• Development of Test jigs and testing.
• Thermal Analysis.
• EMI / EMC testing.
ACADEMIC PROJECTS
• M.Tech Dissertation
o Design and Development of Flyback Converter using Planar Magnetics, Carried out at CENTUM ELECTRONICS LTD
• B.Tech Dissertation
o Simulation of Quasi Resonance ZVS boost converter
FIELDS OF INTEREST
• Switched Mode Power Supplies (SMPS)
• Industrial Drives
• Power Systems
• Microelectronics
SOFTWARE SKILLS
• MATHCAD
• PSPICE
• LTSPICE
KEY STRENGTHS
• Efficient, accurate and able to accomplish the assigned task alone as well as in team.
• Willingness to learn.
• Fast adjustment to new environment.
REFERENCES
1. Prof. Ravishankar Deekshit
Head of the Department
Electrical & Electronics Engineering
BMS College of engineering
Bull Temple Road; Basavanagudi
Bangalore-560019
Karnataka
India
Email: ***.***@*****.**.**
*************@**********.***
Ph: +919*********
2. Prof. L. Venkatesh
Electrical & Electronics Engineering
BMS College of engineering
Bull Temple Road; Basavanagudi
Bangalore-560019
Karnataka
India
Ph: +91-080-********
PERSONAL INFORMATION
Father’s name: N.Ramaiah
Date of birth: 30-07-1979
Email ID: *********@*****.***
Phone number: +91-984**-*****
Address: # 504, 1st floor
Muktha Nivas, 1st A main
5th Cross, Near BSNL telephone exchange
Bhuvanagiri, OMBR Layout
Banasawadi
Bangalore-560043, India
Krishna Mohan Nutheti
Place: Bangalore
Contact this candidate