ARUNKUMAR SUBBARAJ Email: adcrxi@r.postjobfree.com

Mobile: +91-999*******

CAREER OBJECTIVE:

Seeking a position of power electronics design engineer in a developing organization where my skills, experience and knowledge of updating electronic design techniques would boost the development of electronic products.

SUMMARY OF SKILLS:

Strong working experience in an electronic goods manufacturing settings

Excellent knowledge of circuit simulation tools, and high voltage power investor

Proficient in design and development of new products

Outstanding teamwork, communication, and project management skills

Self-motivated and multi-tasking person with attention to detail

Skilled in planning organizing projects effectively PROFESSIONAL EXPERIENCE:

5+ years of research experience in Power Electronics and 1 year of R&D experience in Power Electronics circuits (Power Converter Circuits Design, Development, Testing and Debugging) and Magnetics (Transformer and Inductor Design and Development) as below:

Significant experience of handling and managing complete product development cycle.

Worked on BOM preparation, Board design, development, Board Bring-up and debugging

Considerable experience in Simulation design and Hardware Design of SMPS (includes PFC, Auxiliary Power Supply, Power Converter Circuit, Magnetics, DC-DC controller Board and Output filters Designs). .

Engineering prototype testing before product goes into mass manufacturing.

Excellent in trouble shooting at component, board and system level.

Strong in Board level testing and calibration of Power Supply.

Being as a Project Lead, given support and valuable guidance to team engineers in board debugging & board bring up, designing and testing of SMPS.

Created test and debug manual to minimize debug time of product.

Written technical documents on guidelines and standards for test procedures, engineering procedures and equipment maintenance.

Provided product training to new employees, project trainees, college students, Educational/Industrial electronics laboratory people.

Successfully, handled a team of people to achieve project goals.

Keep track of product status at various stages

Work on strategies to reduce the product life cycle.

Worked on aggressive project schedule and achieved targets with team on time. WORKING EXPERIENCE:

Working as a Senior R&D Power Electronics Engineer at Scientific Mes-Technik Pvt. Ltd., Indore since June 2019

Worked as an Assistant Professor at Sree Vidyanikethan Engineering College, Tirupati, Andhra Pradesh (Dec 2016 – May 2019)

Worked as an Assistant Professor at Sri Eshwar College of Engineering, Coimbatore, Tamil Nadu (June 2012 – Nov 2016)

Played a role as a Researcher (Part Time) at Anna University, Chennai, Tamil Nadu (June 2015 to Dec 2019)

MAJOR ACHIVEMENTS:

Board bring-up for DC-DC Controller Analog Board without any re-design/changes to PCB.

Designed and Developed a High Current Rating SMPS within stipulated time.

Improved the efficiency of the SMPS by providing the solution of replacing the normal transformer and inductor with Planar Construction.

Designed and Developed a Hardware Prototype Model of Inverter and Converter Circuits for Power Electronics and Drives Laboratory.

Project got selected in Quest Global Ingenium Contest 2018. TECHNICAL SKILLS:

Analog/digital circuit design:

Power Supply controller ICs.

Simulation:

MATLAB/Simulink, MULTISIM, PSIM.

Programming and others:

C, Assembly, MATLAB.

SKILL SET:

Circuit Designing (theoretical calculations)

Simulation based Design

PCB Designing/BOM preparation

Team Management and Coordination

Hardware Designing(PFC circuit designing, MOSFET Power Circuit designing, Magnetics which includes Transformer and Inductance design, Output filter and EMI/EMC filter design, Auxiliary circuit design)

Project Coordination/ Delivery

Testing and QC of SMPS

My Roles, Responsibilities and Experience:

Teaching Experience:

1. Sri Eshwar College of Engineering ( 01.06.2012 to 30.11.2016) Designation: Assistant Professor

Abilities and Experience:

Demonstrated abilities in teaching Electrical and Electronics related subjects, etc. for B.Tech., Skilled in organizing national & international seminars, students symposium and workshops, Hands-on experience in contributing to monitoring and enhancement of quality in teaching within the department, An effective communicator with good analytical, interpersonal, planning and problem solving skills, Having experience in training the industry professionals, Coordinate with training instructors in developing training course content, Having experience in facilitating / coaching students by using interactive discussions and “hands-on” approaches to help students learn and guiding them to apply the concepts in real time applications.

Professional Enhancement:

Completed a certified course on “PCB Designing Using Orcad”.

Completed a certified course on “Embedded C (PIC Microcontrollers)”.

Completed a certified course on “ARM Processor (CC3200)”.

Completed a certified course on “MSP430 Microcontroller and its applications in IOT”.

Completed a certified course on “C & C++” conducted by RACE institute, Madurai.

Roles:

ISO Coordinator

NAAC Coordinator

Industrial Visit/Internship Coordinator

Placement Coordinator

A member in Entrepreneurship Development Cell

Workshop/Training/Project Coordinator

Coordinator for conducting job oriented courses/Value Added Courses

Alumni Coordinator

Subjects Taught:

Electrical Engineering

Electrical Machines

Electromagnetic Field Theory

Solid State DC and AC Drives

Measurements and Instrumentation

Projects Done:

Done the following projects along with the students.

Radio Frequency Energy Harvesting System.

Digital Shoes to Guide Blind People with Measurement of Calorie Burning Using Microcontroller.

Automated Solar Grass Cutter Using MSP430 Controller.

Body Mass Index Calculator Using MSP430.

Smart Waste Management System Using MSP430.

2. Sri Vidyanikethan Engineering College (01.12.2016 to 03.05.2019) Designation: Assistant Professor

Abilities and Experience:

Demonstrated abilities in teaching Electrical and Electronics related subjects, etc. for B.Tech. and M.Tech.,, Hands-on experience in contributing to monitoring and enhancement of quality in teaching within the department, An effective communicator with good analytical, interpersonal, planning and problem solving skills, Having experience in training the industry professionals, Coordinate with training instructors in developing training course content, Having experience in facilitating / coaching students by using interactive discussions and “hands-on” approaches to help students learn and guiding them to apply the concepts in real time applications.

Professional Enhancement:

Attended 3 days short term course on “Microgrid and Grid Integration Issues of Distributed” organized by IEEE Madras Section and SRM Institute of Technology, Chennai.

Attended 1 Week short term course on ” Electrified Mobility” conducted by Sree Vidyanikethan Engineering College in collaboration with Amplify Mobilty, Hyderabad.

1 Week Training in LabVIEW

Roles:

ISO Coordinator

Industrial Visit/Internship Coordinator

A member in Entrepreneurship Development Cell

Workshop/Training/Project Coordinator

Coordinator for conducting job oriented courses/Value Added Courses

Class Tutor

Subjects Taught:

Power Electronics

Power Semiconductor Drives

Analysis of Power Converters

Analysis of Inverters

Solid State DC and AC Drives

Projects Done:

Done the following projects along with the students.

Detection of power theft in distribution line using GSM technology.

Smart Home Management System Using Arduino.

PLC based Traffic Control System.

Research Experience:

1. Hindusthan College of Engineering and Technology Affiliated to Anna University

(June 2015 to Dec 2019)

Designation: Research Scholar

Field: Power Electronics

Thesis Titled: Multilevel Inverter with reduced number of switching devices for Solar PV Application

Description:

The principal intent of this research work is to develop an efficient MLI with good improved Total Harmonic Distortion (THD) profile. The research work is carried out in four different ways.

a) To design a fifteen level inverter with a reduced number of active switching devices and reduced number of DC sources.

b) To develop a single input multi-output DC-DC boost converter for Solar PV system fed MLI.

c) To design a hybrid PWM technique for hybrid MLI to improve the THD profile.

d) To create a hybrid cascaded H-bridge fifteen level inverter with single input triple output DC-DC boost converter for solar PV application. The first work involves in designing a generalized structure for multi-level inverter with reduced active switching devices. Further, specifically fifteen level inverter is analyzed with separate multiple DC sources and with a single DC source with splitting capacitor circuit. These circuits are designed using MATLAB-SIMULINK, and the output voltages of these two different circuits are compared and analyzed.

Secondly a DC-DC converter is developed in this work which takes care about the boosting and the balancing of the voltage level. This converter is named as “Single Input Multi Output (SIMO) DC-DC boost converter.” This converter is fed with a single DC source, and the multiple boosted outputs can be tapped out from the proposed converter.

A hybrid PWM technique is developed by combining High frequency Modified Sinusoidal Pulse Width Modulation (PWM) strategy for an upper inverter and the low-frequency Staircase PWM strategy is generated for a lower inverter. Then all these works mentioned above are put together and integrated to form a hybrid H-bridge cascaded fifteen level inverter with SIMO boost converter to improve the energy conversion efficiency in Solar PV applications Projects Done:

During research, I have done few projects in the fields of H-Bridge Multilevel Inverters.

Project Name: Reduced Switch Multilevel Inverter for Solar PV applications Institute: Anna University, Chennai

Project Description: In my Doctoral degree, I had undergone a research in Multilevel Inverter with reduced number of switching devices for Solar PV application. After surveying the literatures, a Hybrid Cascaded H-Bridge Multilevel Inverter (MLI) is designed with reduced number of switching devices and a new hybrid PWM Technique is developed in order to improve the quality of output voltage and current. This developed system is fed with three different sources and the THD level of the output voltage is measured and compared.

Project Name: Design and Development of Single Input Triple Output (SITO) DC-DC Boost Converter

Organization: Anna University, Chennai

Project Description: During my research, a new DC-DC boost converter called SITO boost converter is designed and developed for Solar PV application. It is capable of boosting and splitting the output voltage as per the required application. This model eliminates Voltage Balancing Problem.

Project Name: Analysis, Design and Development of Variable Frequency PWM Techniques for Unequal Voltage Source Multilevel Inverter

Institute: Sree Vidyanikethan Engineering College. Project Description: As a part of my professional enhancement, our team had undertaken this project, which is useful for industrial applications. In which, asymmetric MLI is designed and developed with variable frequency Multi-carrier signal PWM technique to improve the THD level in output waveform and it is mostly used in Grid Interconnecting applications.

Project Name: Analysis, Design and Development of Variable Frequency PWM Techniques for Unequal Voltage Source Multilevel Inverter

Institute: Sree Vidyanikethan Engineering College

Project Description: As a part of my professional enhancement, our team had undertaken this project, which is useful for industrial applications. In which, asymmetric MLI is designed and developed with variable frequency Multi-carrier signal PWM technique to improve the THD level in output waveform and it is mostly used in Grid Interconnecting applications. Industrial Experience:

1. Scientific Mes Technik Pvt. Ltd., Indore. ( 06.06.2019 to till date) Desgination: Senior R&D Power Electronics Engineer Roles:

1. Analyzing, Simulating, Designing, Developing and Testing the Power Electronic Circuits (PFC AC/DC Converter, DC-DC Converter (Isolated and Non-Isolated), Magnetics Design (Transformer and Inductor, recently doing R&D in Planar Technology, Output Filters, Analog Controller Design etc..) 2. Leading a team and motivating them towards their ambition. 3. Preparing the procedures for manufacturing and production purposes; including technical documentation, test procedures, engineering procedures, and test equipment maintenance.

Experience in Circuits:

1. Unidirectional and Bidirectional PFC AC/DC Converters 2. Unidirectional and Bidirectional Isolated, Non-Isolated DC/DC Converters 3. Gate Driver Design (Low Side MOSFET Driver, High Side MOSFET Driver, Low and High Side MOSFET Driver, Bootstrapping Capacitor High Side MOSFET Driver, Isolated MOSFET Driver)

4. Snubber Circuit Design (Non-Dissipative Regenerative Passive Snubber circuits, RC Snubbers, RCD Snubbers, LCDD Snubbers etc..)

5. Output LC Filters

6. Magnetics Design (Transformer, Inductor, Planar technology for high frequency circuits)

7. Analog DC-DC Controller Board Design

8. Auxiliary Power Supply using TOP Switch.

Projects Undertaken:

Project Name: 800 & 1600 Watt Switch Mode Power Supply Project Description: It provides robust and reliable power supply for Industrial and R&D applications. It's compact, highly efficient, light weight with excellent line- load regulation. Has low ripples and compatible with wide AC mains input range from 90V to 265V. 800 and 1600watts SMPS includes a lot of variations like (1000V, 1.6A), (600V, 2.6A), (300V, 5A),

(60V, 26.5A Multi ranging), (20V, 80A), (40V, 40A) etc… Responsibilities:

Simulation done in MATLAB/SIMULINK.

Designing DC-DC Control, DC/DC Power Module, PFC design, Output Capacitor board design, EMI testing.

Capable of handling both digital and analog boards.

Handle Magnetic Components for 800 & 1600 Watt SMPS.

Board bring up/ Board debugging and Testing.

Project Name: DCA 3225 (731 Watt Unique High Current Rating) Switch Mode Power Supply

Project Description: It is a high current rated power supply purposely made for L&T Industry for their application. It is designed in 1U with extremely new technology like Synchronous Rectification, highly efficient, light weight with excellent line- load regulation. Has low ripples and compatible with wide AC mains input range from 90V to 265V. 731 watts SMPS has the range of 3.25V, 225A.

Responsibilities:

Simulation done in MATLAB/SIMULINK.

Schematic Design using Altium Software.

Designing DC-DC Control, DC/DC Power Module, PFC design, Output Capacitor board design, EMI testing.

Capable of handling both digital and analog boards.

Handled Magnetic Components, Bus Bar Designing, Heat Sink Component Calculation and Selection.

Board bring up/ Board debugging and Testing.

Procedures for manufacturing and production purposes; including technical documentation, test procedures, engineering procedures, and test equipment maintenance.

Project Name: Planar Transformer and Inductor ( for PS 20-80 Model SMPS) Project Description: Planar Inductor is done by EE core Fair-Rite 95 type of material for 80A rating in order to improve the efficiency of PS 20-80 SMPS existing model. Responsibilities:

Created a inductor design sheet in excel for easy calculation of current density, Saturation limit of peak flux density with the help of Core Datasheet.

Tested with rated current range and prepared a procedure document for production and testing.

Project Name: Bidirectional 5kW SMPS (Ongoing Project) Project Description: SMPS with 5kW rating is developed with bidirectional and bipolar features (i.e) acting as a Power Source and Sink. It includes bidirectional PFC and bidirectional DC-DC part. DSP controller is incorporated.

Responsibilities: (so far)

MATLAB/Simulink Simulation

Schematic Design using Altium software.

EDUCATIONAL QULIFICATION:

Ph.D. in Power Electronics from Anna University, Chennai, Tamil Nadu in 2019.

Masters in Engineering (Power Electronics and Drives) from Mepco Schlenk Engineering College, Affiliated to Anna University, Chennai, Tamil Nadu in 2012.

Bachelor of Engineering (Electrical and Electronics Engineering) from Sree Sowdambika College of Engineering, Affiliated to Anna University, Chennai, Tamil Nadu in 2010. Publications:

1. Arunkumar, G.S. and Ananthamoorthy, N.P. 2018. A SITO DC-DC Converter Hybrid Cascaded Multilevel Inverter Topology for Stand-Alone PV Applications. Journal of Electrical Engineering, 18(3): 321-330.

2. Arunkumar, G.S. and Ananthamoorthy, N.P. 2018. Hardware Implementation and Analysis of Different Sources fed Hybrid Fifteen Level Inverter. Journal of Electrical Engineering, 18(3): 82-91.

3. Arun, V., Selvarasu, R. and Arunkumar, G.S. 2017. Analysis of Variable Frequency PWM Techniques for Unequal Voltage Source Multilevel Inverter. International Journal Of Advance Research And Innovative Ideas In Education, 3(3): 3045-3053. 4. Arunkumar G.S. and Sunitha V. 2017. Comparative Analysis of Five Level Inverter for Solar PV Application with PI and Fuzzy Controllers. International Journal of Application or Innovation in Engineering & Management, 6(6): 297-307. 5. Arunkumar, G.S., Soundar, N. Mathankumar and Vivekkumar, V. 2016. Enhanced AHB for audio codec control using I2C. North Asian International Research Journal of Sciences, Engineering & I.T., 2(6): 1-6.

6. Arunkumar, G.S., Soundar, N. and Mathankumar, 2015. Design of an Efficient FSM for an Implementation of AMBA AHB in SD Host Controller. International Journal of Computer Science and Mobile Computing, 4(11): 153-158. 7. Arunkumar, G.S., Kiruthiga, S. and Sanjeev, N. 2015. Enhancement of H-Bridge Multilevel Inverter Designed with the Avoidance of Capacitor Voltage Balancing Problem Using FPGA. International Journal of Technology Enhancements and Emerging Engineering Research, 3(4): 141-144.

8. Arunkumar, G.S. and Kiruthiga, S. 2014. H-Bridge Multilevel Inverter to Obtain Quality Power. International Journal of Advanced Research in Electrical, Electronics and Instrumentation Engineering, 3(9): 118**-*****. 9. Elakya, A. and Arun Kumar, G.S. 2014. Designing Parabolic Pulse Width Modulation for Induction Motor Drive. International Journal of Emerging Technologies in Computational and Applied Sciences, 1-4: 122-126. 10. Elakya, A. and Arun Kumar, G.S. 2014. Efficient Cost Reduction in BLDC Motor Using Four Switch Inverter and PID Controller. International Journal of Advanced Research in Electrical, Electronics and Instrumentation Engineering, 7294-7304. 11. Arunkumar, G.S. and Kiruthiga, S. 2015. H-Bridge Multilevel Inverter Designed with Minimum Switching Devices Using FPGA”, National Conference on Advances in Computing Technologies (NCACT 2015).

12. Arunkumar, G.S. and Manikandan, B.V. 2012. Vector Control of Load Commutated SCR based Current Source Inverter fed Induction Motor Drive”, International Conference on Futuristic Trends in Electronics Engineering (ICFTEE- 2012).

Professional enhancements

Attended a 3 days short term course on “Microgrid and Grid Integration Issues of Distributed” organized by IEEE Madras Section and SRM Institute of Technology, Chennai.

Attended a 1 Week short term course on ” Electrified Mobility” conducted by Sree Vidyanikethan Engineering College in collaboration with Amplify Mobilty, Hyderabad.

1 Week Training in LabVIEW

Completed a certified course on “PCB Designing Using Orcad”.

Completed a certified course on “Embedded C (PIC Microcontrollers)”.

Completed a certified course on “ARM Processor (CC3200)”.

Completed a certified course on “MSP430 Microcontroller and its applications in IOT”.

Completed a certified course on “C & C++” conducted by RACE institute, Madurai.

Undergone a certificate course on “Mobile Communication” conducted by Anna University, Chennai and BSNL (AU-CUIC)

Undergone a certificate course on “Science and Technology Capacity Building for Industrial Needs” sponsored by TNSCST, Chennai and Organized by Mepco Schlenk Engineering College, Sivakasi.

Papers Presented

Presented a paper entitled “Vector control of load commutated current source inverter fed induction motor drive” in the International Conference on Futuristic Trends in Electronics Engineering, ICFTEE-2012,

Presented a paper entitled “Implementing Hybrid PWM Strategies for VSC and Diode Assisted Buck-Boost VSI for Accurate Current Control.” in the International conference on innovations in Information, Embedded and Communication system.

Presented a Conference Paper on “H-Bridge Multilevel Inverter Designed with Minimum Switching Devices Using FPGA” in a National Conference on Advances in Computing Technologies..

Presented a Conference Paper on “Hybrid Multi-Level Multilevel Inverter with New Controlling Topology” in National Level Conference on Recent Trends in Engineering & Technology.

Workshop Attended

Attended a 1 Week FDP on “IoT and Embedded System Design using NI LabVIEW” conducted by BVRIT, Hyderabad in association with National Instruments, Bangalore.

Participated in a three days National Level workshop on “Photovoltaic Solar Power Plant Design and Optimization” conducted by Muthyammal Engineering College, Salem.

Participated in a three days National Level workshop on “Grid integration issues and Micro grid application” conducted by SRM University, Chennai.

Participated in a National Technical Seminar on “Future Technologies for Combat Vehicle Electronics” conducted by CVRDE, DRDO, Chennai.

Attended a 1 Week Meity, Govt. of India, sponsored FDP on “Real Time Embedded Systems and IoT its Applications” conducted by NIT, Warangal.

Attended a 1 Week FDP on “Teaching, Learning and Research” conducted by Sree Vidyanikethan Engineering College.

Participated in a two days AICTE sponsored National Level Seminar on “Research Issues on Nano Particles nad Nano Biosensors in Agriculture” conducted by Sree Vidyanikethan Engineering College.

Participated in “IUCEE AP Chapter- EPICS” conducted by APSSDC, Department of Skill Development, Entrepreneurship and Innovation, Govt. of AP.

Attended a one day FDP on “Project based Learning with MATLAB” conducted by Sree Vidyanikethan Engineering College.

Participated in a one day workshop on “IPR Awareness Workshop” conducted by Sree Vidyanikethan Engineering College.

Participated in One Week Workshop on “Research Issues on Grid Computing and Cloud Computing” in Mepco Schlenk Engineering College, Sivakasi.

Participated in One Week Workshop on “Research Avenues in Power Electronics and Renewable Energy Applications” in Anna University Trichy BIT Campus.

Participated in One Week Workshop on “LABVIEW- an Overview” in Sri Eshwar College of Engineering.

Participated in One Week Workshop on “PIC Microcontroller and its Applications and Hands-On Training”.

Participated in One Week Workshop on “Embedded Systems and its Real Time Applications and Hands-On Training”.

Participated in Two Weeks National Workshop On “Recent Trends in Embedded System Design”.

PERSONAL DETAILS:

Date of Birth : 20

th

November 1987

Father's Name : Mr. G. Subbaraj

Marital Status : Married

Languages Known : English, Tamil, Telugu and Hindi. Permanent address : S/O Mr. G. Subbaraj

2/211, South Street, Vellayapuram,

Aruppukottai, Virdhunagar,

Tamil Nadu, India - 626112.

I hereby declare that the information furnished above is true to the best of my knowledge.

Place: Indore, Madhya Pradesh.

Date : 09-03-2020

ARUNKUMAR G S

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