Student Projects at Danfoss Drives

Requisition ID: ‎26505
Job Location(s): Graasten, DK

Job Description

Danfoss Drives is looking for talented students for in-company projects to
support the introduction of the next generation of Frequency Converters. You
are going to work closely with the R &D functions within Danfoss Drives and
will be based in Graasten.

Project Title: FPGA based ripple current measurement

Project Description:
The current ripple created by the pulse-width modulation contains information
that can be relevant for protection and motor state estimation.
The goal of this project is to use the FPGA capabilities of high sample rate
to provide the ripple information (current change rate) to the control card
where the information will be processed.
Care must be taken to account for issues such as delays and cable ringing so
that the information is reliable.
All proposed methods must be verified with the real motor tests.

Contact: [email protected]

Project Title: Mixed Signal Simulation

Project Description:
Have you ever wanted to move sub functions of an analog circuit into an FPGA
to save space or cost?
If so, you already know that you will need to model either the FPGA into the
analog domain or make a VHDL/Verilog model of your analog circuit to simulate
your implementation.
The creation of these models is error prone and is a waste of time!
* Investigate how already existing tools like ModelSim and PSpice can be used for Mixed signal simulation.
* Develop a method / tool for using existing code / models for Mixed signal simulation

Contact: [email protected]

Project Title: Improve FPGA simulation

Project Description:
* Improve existing python-based FPGA testbench generation script
* Collect and present Coverage reports in a meaning full way
* Create new/improved Verification Components using the UVVM methodology
* Come up with your own ideas or brainstorm with the FPGA team
what could be improved

Contact: [email protected]

Project Title: Very High Frequency Switch-mode power supplies

Project Description:
Background
Switching of inverters requires a steady unipolar or bipolar voltage supply.
Voltage supplies with galvanic isolation requires dedicated space for the
transformers that put constraints on the design due to a typical switching
frequency in the range of a few hundred kHz. The transformers are often THT
which is more costly to mount than SMD. To avoid a sizable voltage supply with
costly components it is desirable to increase the switching frequency into or
close to the Very High Frequency range (VHF, ‎30-‎300 MHz) and use Printed
Circuit Board (PCB) embedded magnetics for galvanic reinforced isolation with
ref. requirements stated in IEC ‎61800-‎5-‎1:2007 and IEC ‎61558-‎1:2019.

Objective
The objective of the project is to investigate whether it is possible to
increase the switching frequency of the inverter gate drive supplies into the
VHF range. The isolated DC/DC converter should achieve efficiencies at least
on par with current art in Danfoss gate drive supplies and use standard
components to keep cost low. The aim is to show that a significant reduction
of the overall size can be achieved without compromising cost, efficiency or
compliance with applicable drive standards as example electromagnetic
interference.

Contact: [email protected]

Your application
Convince us that you are the right profile by submitting a motivated cover
letter, your CV and relevant educational subscripts. Please make sure you
upload a cover letter in order to be considered for the role.
for questions or further general information please contact People Leader Lone
Harvest [email protected]

Danfoss - Engineering Tomorrow

At Danfoss, we are engineering solutions that allow the world to use resources
in smarter ways - driving the sustainable transformation of tomorrow. No
transformation has ever been started without a group of passionate, dedicated
and empowered people. We believe that innovation and great results are driven
by the right mix of people with diverse backgrounds, personalities, skills,
and perspectives, reflecting the world in which we do business. To make sure
the mix of people works, we strive to create an inclusive work environment
where people of all backgrounds are treated equally, respected, and valued for
who they are. It is a strong priority within Danfoss to improve the health,
working environment and safety of our employees.

Following our founder's mindset 'action speaks louder than words', we set
ourselves ambitious targets to protect the environment by embarking on a plan
to become CO2 neutral latest by ‎2030.

Danfoss is an EO employer and VEVRAA Federal Contractor. All qualified
applicants will receive consideration for employment without regard to race,
color, religion, sex, national origin, age, disability, veteran status, or
other protected category.