Abstract
The increasing number of high-power electric vehicle (EV) charging stations in electricity grids introduces new challenges for the grid operators. Not only the high power demand of the chargers has an impact on the grids, the devices can also be a source of supraharmonic (2-150 kHz) emissions that have several unwanted effects. In this research, an advanced set-up is developed to characterize the supraharmonic emission of high-power EV chargers to find the influencing parameters. Two chargers with a 175 kW rating are tested on a wide range of DC-voltage and -current setpoints and for different AC grid conditions to obtain a representative assessment of the behaviour of the chargers under different operation conditions. The main conclusion is that the supraharmonic emission of the chargers is highly dependent on the DC output voltage and that multiple chargers may interact with each other, resulting in a slow time-varying beating phenomenon. The findings support the understanding of the supraharmonic emission from EV fast chargers and help in assessing the impact they can have on the grid.
| Original language | English |
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| Title of host publication | CIRED Porto Workshop 2022 |
| Subtitle of host publication | E-mobility and power distribution systems |
| Publisher | Institution of Engineering and Technology |
| Pages | 133-137 |
| Number of pages | 5 |
| ISBN (Electronic) | 978-1-83953-705-9 |
| DOIs | |
| Publication status | Published - 27 Jul 2022 |
| Event | 2022 CIRED Workshop (CIRED 2022): E-mobility and power distribution systems - Porto, Portugal Duration: 2 Jun 2022 → 3 Jun 2022 https://www.cired2022porto.org/ |
Workshop
| Workshop | 2022 CIRED Workshop (CIRED 2022) |
|---|---|
| Country/Territory | Portugal |
| City | Porto |
| Period | 2/06/22 → 3/06/22 |
| Internet address |