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Internship Project: Design and test an optimal control strategy for a MVDC MMC

About VONK

VONK is an international supplier of electrical engineering solutions in the fields of Power Conversion, Electrical & Instrumentation (E&I) and Control & Automation (C&A). VONK has a history of over 85 years and has made a name for itself in the energy and defence markets. We design, assemble and install electrical distribution stations, inverters and process control equipment for use in complex industrial installations.

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VONK

Internship Project: Design and test an optimal control strategy for a MVDC MMC

  • Posted at Nov 19, 2024
  • Vacatures
  • Zwolle
  • 40 hours / week
  • Internship

Scope

To study and implement the control system for a
Multilevel Modular Converter (MMC) for medium voltage
DC grid integration of a high current electrolyser power
supply.

Problem definition
Vonk is leading manufacturer and system integrator of power supplies which convert energy from any renewable energy source to feed the electrolyser with the desired power quality. Vonk, along with other industrial partners, is investing in upscaling of the green hydrogen generation. One of the crucial parts in the system is the power supply with which these electrolysers are powered. A MMC based power supply topology is proposed as an interface between a MVDC or HVDC grid and LVDC electrolyser, as a novel solution to fit with future grid developments. You will design and integrate the control loops for the MMC on the available small, scaled prototype or test
bench.

Methodology

  • Literature review will be done to find the best control strategy;
  • Simulations in MATLAB Simulink, concerning:
    1. Voltage and current loops;
    2. Submodule capacitor balancing loop;
    3. Circulating current reduction loop;
    4. Active filtering control loop. 
  • Measurement and Protection loops;
  • Implementation of control loops in a scaled prototype.

Research Objectives:

  • Determination optimal switching techniques for MMC and required control loops;
  • Derivation of control loop parameter;
  • Realization of Control loops for the scaled prototype;
  • Effect of upscaling on control system parameters from prototype to a real system 

Who are you?

  • You are someone who is looking for a challenging internship in Zwolle for 40 hours a week;
  • You are studying at the technical university in the direction of Electrical Engineering with affinity for firmware/programming;
  • You are motivated, eager to learn and dare to ask questions;
  • You are interested in innovative technical projects.

What we offer

  • An allowance of € 500 gross per month;
  • Good guidance and support;
  • Opportunity to work in an international setting;
  • The chance to learn about innovative projects;
  • The possibility of permanent employment after your internship.

Interested?
For general questions or enquiries or the procedure, please contact Suzanne Levering (HR Advisor).
Email: career@iivonk.com

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