Electric Fleet Vehicle Charging’s Impact on LV and MV Power Quality
Date & Time
Wednesday, September 13, 2023, 1:30 PM - 2:15 PM
Location Name
Ballroom A2

Amazon has pledged to reach net-zero carbon emissions across operations by 2040. A partnership with Rivian has led to the launch of 63 sites with 5,186 electric vehicle (EV) chargers in 2022 with over 100 electric vans charging at each facility site. By the end of 2023, there will be 130 sites and 21,067 EV chargers with over 300 vans simultaneously charging at a single site. By the end of 2024, the numbers will grow to 120,000 energized chargers at approximately 460 delivery station sites. Uncertainty remains about whether existing distribution infrastructure will serve the increased electric energy demand of fleet electrification throughout the U.S. and whether the nonsinusoidal nature of high-current switching of hundreds of nonlinear Level 2 and 3 EV fleet chargers is a power quality concern. This presentation unveils unique insights and observations from field recorded data of over 300 electric vans simultaneously charging. The power quality analysis performed includes site-measured voltage, current, harmonics, unbalance, total demand distortion (TDD), and rapid voltage change (RVC).

Key Takeaways

  • EV and infrastructure design
  • Rivian van design and on-board chargers
  • Comparison of THD/harmonic content across different charging locations/EVSEs
  • Grid source impedance across different locations when over 300 Vans charge at once
David Treichler Nina Sadighi Sowmya Holla Muhammad Mobeen Mahmood Ellery Blood