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: levke.jepsen@danfoss.com

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: khjerrild@danfoss.com

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: levke.jepsen@danfoss.com

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: hcholm@danfoss.com 

 

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 lone.harvest@danfoss.com

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.

 

Danfoss engineers solutions that increase machine productivity, reduce emissions, lower energy consumption, and enable electrification.

Our solutions are used in such areas as refrigeration, air conditioning, heating, power conversion, motor control, industrial machinery, automotive, marine, and off- and on-highway equipment. We also provide solutions for renewable energy, such as solar and wind power, as well as district-energy infrastructure for cities.

Our innovative engineering dates back to 1933. Danfoss is family-owned, employing more than 40,000 people, serving customers in more than 100 countries through a global footprint of 95 factories.
 

 

Danfoss engineers solutions that increase machine productivity, reduce emissions, lower energy consumption, and enable electrification.

Our solutions are used in such areas as refrigeration, air conditioning, heating, power conversion, motor control, industrial machinery, automotive, marine, and off- and on-highway equipment. We also provide solutions for renewable energy, such as solar and wind power, as well as district-energy infrastructure for cities.

Our innovative engineering dates back to 1933. Danfoss is family-owned, employing more than 40,000 people, serving customers in more than 100 countries through a global footprint of 95 factories.