Exploring The Possibilities of V2G on a Nano Grid Scale

Flashcards based on lecture notes encompassing key concepts of electric vehicles, smart grids, power measurements, and their implications in energy systems.

What is your project about?

Exploring V2G possibilities on a nanogrid scale using real measurements at UNT’s Zero Energy Lab.

How fast is the EV market growing?

EV share tripled from 2021–2024; global share rose from 4% → 19%; Texas from ~1% → ~7%.

Why does EV growth matter for the grid?

Higher residential load, transformer stress, peak demand issues, need for smart charging.

What did YOU personally build/work on?

Totem converter integration, Plexim control code, GaN daughtercards for high‑speed switching.

Why test at ZØE?

It’s a residential nanogrid with PV, two Level‑2 chargers, and continuous monitoring via eGauge.

What three scenarios were tested?

Baseline → 1 EV → 2 EVs.

What happened to active power?

Increased proportionally; two EVs exceeded 10 kW.

What was the worst voltage dip?

~2.5%.

How did frequency behave?

Stayed stable (~60 Hz) due to strong grid support.

Were harmonics and power factor acceptable?

Yes — remained within residential limits.

What’s the main conclusion?

Nanogrids can support EV charging with minimal power quality issues under strong grid conditions.

What’s the risk in weak grids?

Heavy EV penetration may cause instability.