2nd quarterly report at KEMA Labs


This quarterly report is the second of four reports I will submit during my time as an ES Cornwall Scholarship holder and covers my final three months with KEMA Labs. This report is a follow-on from my first quarterly report which, combined with this second report, forms a record of my time with KEMA Labs. Sections 1 and 2.1 have been replicated from the first quarterly report as these serve as background information and allow the two reports to be read separately.

In the three months covered by this second quarterly report, I have continued my involvement in projects undertaken at KEMA Labs’ FPGL. In this time, we have completed follow-up testing on one of the battery chargers that was previously tested in the FPGL as well as performed capacity testing of a battery energy storage system (BESS). A summary of the lessons learned during these projects is as follows:

  1. Fine art of tuning control loops of inverters/converters to respond to dynamic changes in load and source and how there may not always be a ‘one size fits all’ solution.
  2. Battery capacity testing: Safety issues and the importance of pre-commissioning testing.
  3. Voltage and current characteristics of a LFP battery during charge and discharge cycles.
  4. Logistical challenges of testing and transporting large BESS units.

I was also fortunate enough to be taken on a tour of KEMA Labs’ HPL and HVL and received an overview explanation of how they carryout short-circuit testing and cable testing (which I will discuss later in this report).

As of the 24th of March I have concluded my time with KEMA Labs and have moved across to England to undertake a placement with National Grid ESO commencing the 3rd of April. Again, I would like to thank my teammates in the FPGL Erik de Jong and Dan Gumeni for the last six-months. I enjoyed my time in the team and learnt a lot and I look forward to keeping in touch to hear about all the exciting things happening in the FPGL.

A full version of this report can be found here.