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Real-World Impacts of EV Charging on Power Quality: Insights from Nissan Leaf Data
This white paper analyzes power quality effects from electric vehicle charging using a Nissan Leaf as a case study. Measurements from both Level 1 (120V) and Level 2 (208/240V) charging cycles reveal that voltage unbalance and low voltage are the primary concerns in commercial Level 2 installations, while harmonics and flicker are more pronounced in residential Level 1 scenarios. Data from multiple monitoring devices illustrate how load characteristics, wiring size, and charging patterns influence voltage, current, and waveform distortion throughout the charging process.
Key topics include:
- Equipment and Setup
- Steady State Charging
- End of Charging
- Power Quality Observations
Why utilities should care:
Understanding the specific voltage, current, and harmonic impacts of EV charging enables better planning for infrastructure upgrades, helps mitigate power quality issues, and supports reliable integration of electric vehicles into existing electrical systems.
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