EA Elektro-Automatik GmbHViersen, Germany

Senior Hardware Design Engineer

EA Elektro-Automatik, now part of Tektronix, has been offering high voltage and high current bidirectional power supplies for various applications in automotive, industrial, aerospace and such markets for the last 50 years. As a Senior Hardware Design Engineer, I am responsible for:

• designing the resonant stage of the new product platform for company’s next-gen bidirectional power supplies for increased power density and efficiency, from power levels of 12kW for the first phase,

• testing and evaluating SiC power MOSFETs in increased switching frequencies for reducing overall component sizes,

• testing and designing inductive components for resonant topologies including CLLC and variants,

• designing current, voltage and temperature measurement circuits for software algorithms to implement control of the system and required filter topologies,

• helping colleagues on traditional topics such as Flyback, Buck, Boost and such SMPS topologies,

• testing the functionality of designed prototypes for various scenarios in the lab for required performance criteria,

• writing Python scripts occasionally to fulfill design tasks, since I like to document my design process in JupyterLab environment,

• helping to maintain the Xpedition EDM toolchain by also implementing scripts for various tasks and output data integrity,

• layouting PCBs in Xpedition EDM from 4 to 8 Layers

Bonfiglioli Vectron GmbHKrefeld, Germany

Hardware Design Engineer

Working as a hardware design engineer, my responsibilities were:

• designing converter topologies from 250 W to 132 kW including basic and advanced motor drives aimed for asynchronous, synchronous, synchronous reluctance and servo motor applications according to national and worldwide standards such as 61800-3, 61800-5-1, 61800-5-2 and similar generic standards, as well as CE conformity,

• testing the functional blocks as well as complete devices in different conditions to qualify short-circuit, high temperature, overload, long time running and similar behavior of frequency inverters and writing technical reports,

• troubleshooting error behavior in new and old designs,

• proposing topologies for new designs and improvements to current portfolio in terms of better thermal, electromagnetic and functional performance,

• using simulation software such as LTSpice for evaluating topologies and dimensioning of components,

• qualifying new components, mainly IGBTs and SiC MOSFETs to replace current ones or proposing second sources and supporting QM department,

• participating actively in research activities aimed to introduce new types of components such as SiC MOSFETs in company and generate new know-how based on new power semiconductor technologies,

• supervising and maintaining company-wide wiki for knowledge management

A Group R&DIstanbul, Turkey

Hardware Design Engineer

As a part of the hardware team, my responsibilities were:

• design power conversion topologies such as inverters, converters and switch-mode power supplies for various applications including Permanent Magnet Synchronous Servo Motor Drives, Elevator Drives and their internal power supplies;

• design analog and digital supplementary circuits for isolated current, voltage and temperature measurement circuits, PWM circuits, gate drives, fault detection circuits, DC Link pre-charging circuits, reference voltage circuits; to design PCBs and schematics of the mentioned motor drives.

I was also responsible for the power, efficiency and harsh condition testing of mentioned motor drives with different kind of scenarios such as short circuit behavior, high ambient temperature testing, and overall efficiency in the qualified electronics laboratory with high performance oscilloscopes, temperature measuring devices and power analyzers.

Due to my background in electromagnetics which I gained during college days, EMC testing of the drives was also part of my responsibilities.

As a part of my job and my personal interest, I also did research and made purchases for electronic equipment and gave tutorials about using them to our team such as oscilloscopes, power analyzers, power supplies, thermal imaging cameras, spectrum analyzers and EMC equipment for the hardware laboratory.

TÜBITAK UMEKocaeli, Turkey

Intern

I worked on EMC Laboratory experiments and developed Test and Measurement software with C# and GPIB libraries.

ELDAŞ EMCAnkara, Turkey

Intern

In two EMC Laboratories I was able to perform experiments on domestic and industrial electronic devices and worked with software development department to create EMC Test Systems for EN61000-4-3 and EN61000-4-6.

SEMAM - Sakarya University Electromagnetics Research CenterSakarya, Turkey

Lab. Assistant

Assistant of Prof. Dr. Osman Çerezci and Asst. Prof. Ş. Çağrı Yener at EMC related calibration, measurement services and testing for industrial customers. Additionally, I have developed Test & Measurement Softwares for commercial use in MATLAB using VISA Libraries and direct communication over SCPI commands.

As a student assistant during my education in Sakarya University, I developed software in Sakarya University Electromagnetics Research Centre for EMC testing equipment such as EMI Receivers, power meters, network analyzers and oscilloscopes using MATLAB, LabWindows/CVI and VISA for automated testing with languages including C#, Python and C++ and GPIB Libraries.

Apart from mandatory lesson time, I also helped performing EMC tests for industrial and military applications for broad range of products according to 61000-4 series, 61800-3 and such standards as well as MIL-STD-461.

Outside the lab, we have also made long term EMR measurements as a research project with my professors around the newly established nuclear power plants in Sinop, Turkey to research and report on electromagnetic radiation profile around the vicinity.