1. Oscar Azofeifa Cas llo
Mechatronics Engineer Por olio

2. January 2014
May 2014
July 2014
February 2015
May 2015
July 2015
September 2015
-January 2014
Space Vector Pulse Width Modula on (SVPWM)
implementa on using DSP from TI.
-May 2014
Electrical design of a driver card for a series of
IGBT modules.
-July 2014
Hardware design of a power converter for UPS
applica on.
-February 2015
Electrical design of power circuit for IGBT drivers.
-May 2015
Structural design of three phase AC/AC converter
for motor driver applica on.
-July 2015
Hardware design of a power converter for motor
driver applica on.
-September 2015
Compensator of power converter for a motor driver applica on.

3. SpaceVectorPulseWidthModulation(SVPWM)
implementationusingDSPfromTI
Embedded programming of a Microcontroller Unit (MCU) from Texas Instruments.
Used C programing language and Code Composer Studio development environment.
Graphed and simulated the control signals necessary for this modula on, in order to generate a three
phase output from a DC input.
Parametriza on of the code for the final implementa on of a Variable-frequency drive.

4. ElectricaldesignofadrivercardforaseriesofIGBTmodules
Part choosing of IGBT drivers and power components.
Electrical design of the isolated power supply necessary for each IGBT driver.
PCB design for final implementa on and tes ng.

5. HardwaredesignofapowerconverterforUPSapplication
Part choosing of IGBT modules, heatsinks and fans. Three phase AC/AC converter.
Structural design of low inductance DC link. Laminated bus bar.
Thermal simula on of IGBT units. Dissipa on dimensioning.
Clamp Snubber circuit dimensioning for over-voltage protec on.

6. Electricaldesign
ofpowercircuit
forIGBTdrivers
Design of a DC/DC buck converter
for Semikron IGBT drivers.
Constant on- me (COT) control
principle.
Thermal and electrical simula on
using Texas Instruments Webench
tool.
Model simula on in closed loop.
PCB design and final construc on.

7. Structuraldesign
ofthreephase
AC/ACconverter
formotordriver
application
CAD modelling of converter cabinet.
Structural design of DC link using flexible copper bars.
Low inductance in DC link as a design requirement.

8. Hardwaredesignofapowerconverterformotordriverapplication
Part choosing of IGBT modules,
heatsinks and fans. Three phase
AC/AC converter.
Thermal simula on of IGBT
units and bridge rec fier.
Dissipa on dimensioning.
Final integra on of
electrical and mechanical
components.
Snubber capacitor
dimensioning for
over-voltage protec on.

9. Compensator
of
power
converter
for
a
motor
driver
application
Constant output voltage at varia ons
in DC bus voltage.
Control implemented using Digital
Signal Processor from Texas
Instruments.
Hardware construc on of DC
analog measurement.
Simula on and tes ng in real
industrial applica on.