HEMANTHKUMAR M18A cross road,H.no-16,Bagalakunte,Bangalore-560073

Email id:-madduru.hemanthkumar@gmail.com

Phone no:-8123367229

Objective

Seeking challenging assignments in Design Engineering with a Leading Organization which would provide

opportunities to grow my career with high repute.

Experience Summary

Technically Sophisticated Professional with over 3 years of experience in Design Engineering

Significant Experience in working and Design of

Single Phase Inverters

Three phase Inverters

DC-DC Converters(Flyback and Full Bridge)

Experience in Testing and Design of Drives for BLDC Motors using ASIC IC

Skillful Experience in using simulation tools like PSIM,MATLAB

Experience in working with VECTOR CONTORL for PMSM Drives

Proficient in Hardware Design for Power Circuit in Inverters

Experience in Magnetics Design for Flyback and Full bridge Converters

Experience in working with PI based Control technique

Experience in Testing & Results Analyzing of Inverters,DC-DC Converters and PCB level circuits using

CRO,Power Analyzer

Experience in working on products related to Defense Level

In depth knowledge about using ORCAD software tool for PCB schematics preparation

In depth knowledge about Designing PCB level Hardware circuits like Differential amplifiers,

Voltage Followers, Level Shifters, Clamping circuits

Adept in Preparing Technical Documentation and Root Cause Analysis of failure for projects handled

Experience in Participating Discussions with Clients to know their requirements

Involving in Cost Estimation of Projects

Experience in doing R&D for size reduction of panel to deliver the same output power

Experienced in Commissioning the products at customer place

Experience in Participating Customer support to resolve technical issues related to products

Possess Effective Communication with excellent relation ship building & inter personal skills;strong

analytical,problem solving and Organizational abilities

Solely Responsible for handling projects through various phases of its development

Technical skills

Analog and Digital Circuit Design

Simulation tools:- MATLAB

PSIM

Software tools:- Auto CAD

Interested Areas of Work

Hardware Design

R&D in Power Electronics Field

Professional Experience

Presently associated with “IE Power Technologies Pvt. Ltd.,Bangalore”, as a Design Engineer

from August 2011

Projects Handled:

Hardware Design for 300KW Dual rotor single- stator axial Flux PMSM drive

Role:Hardware Design for power circuit,Verifying 3D layouts,Control card Schematic preparation

using ORCAD,PSIM simulation for verifying the theoretical values, Documentation,PCB level

Analog and Digital Circuits Design.

Description:This drive will be having two three phase inverters will single input connecting

parallel. The input source for this inverter is battery. Each inverter is driving 150KW PMSM motor

.Here we are using Encoder for rotor position sensing and for controlling we are using Vector

control Technique.

Application: Propeller applications

120KW Variable speed Drive for BLDC Motor

Role:Design and Selection of Power circuit Components(IGBT,DC Bus Capacitors,snubber

capacitors,current sensors,Contactor), Designing Controller for PWM Pulse generation using ASIC IC along

with Orcad Schematic and PCB layout. Complete testing and Documentation of Results and its Analysis.

Description: This Drive functions as a three phase inverter whose output is AC with a Trapezoidal wave

shape by taking rotor position sensing feedback from hall sensor. The input source for drive will be coming

from Battery .Here we used Fairchild's FCM8202 controller IC for PWM generation and for controlling the

speed of Motor we used Analog based PI control technique. This controller will drive the BLDC motor

inside water with different speeds from 100 R.P.M-3600R.P.M by taking 120 KW load.

Application: Propeller applications

Design & Implementation of Integrated 60KW Drive for BLDC Motor

Role:Design and Selection of Power circuit Components(IGBT,DC Bus Capacitors,snubber

capacitors,current sensors),Designing Controller for PWM Pulse generation using ASIC IC along with Orcad

Schematic and PCB layout. Complete testing and Documentation of Results and its Analysis. Simulation

using PSIM and MATLAB Commissioning and Presentation of prototype to the Customer and Clarification

of Doubts over Telephone.

Description:This Drive functions as a three phase inverter whose output is AC with a Trapezoidal wave

shape by taking rotor position sensing feedback from hall sensor. The input source for drive will be coming

from Battery .Here we used Fairchild's FCM8202 controller IC for PWM generation and for controlling the

speed of Motor we used Analog based PI control technique. This controller will drive the BLDC motor

inside water with different speeds from 100 R.P.M-3000R.P.M by taking 60 KW load.

Application: Propeller applications

Design and Testing of Single phase 6.6 KVA and 60 VA Inverters

Role:Testing and Analyzing results, Prepare mechanical drawings in Auto cad(bus bars for capacitors,

supporting plate for PCB's ), Selecting of Power components. Design of protection circuits, Preparing Design

Documentation,Preparing root cause analysis for failure.

Description:The rating of the Inverter is 45-55Vdc input and 230Vac,50hz,sine wave output. Here for

6.6KVA Inverter we used IGBT as a power devices for switching and for pulse generation we used D.S.P &

for 60VA inverter we Intelligent Power Module as a power device and for switching we used Micro

Controller .The o/p of these Inverters will be given to step up transformer for voltage 28Vac to 230Vac.

Application:Using in telecoms sites

DC-DC Converter Design

Role:Magnetics Design(Transformers and Inductors),Component Selection,Preparing documentation,

Preparing Orcad Schematic and PCB layout. Simulation using PSIM.

Description:The rating of the SMPS is 48Vdc input and o/p is 12Vdc@12A. Here we used Flyback

topology for designing SMPS. Here we used Average Current mode control for regulating the output.

Application:Using in battery charging applications

Academic Qualification

Graduated Bachelors in Engineering form ''N.B.K.R Institute of science and technology'' Nellore(Affiliated

to S.V University)in the year 2011 with specialization in Electrical and Electronics Engineering

Personal Information

Date of Birth:24-09-1989

Languages known: English,Hindi,Kannada and Telugu