AC charging of EVs Dr. Gautham Ram Chandra Mouli, Delft University - - PowerPoint PPT Presentation

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Jun 20, 2023 104 likes •253 views

AC charging of EVs Dr. Gautham Ram Chandra Mouli, Delft University of Technology Learning objectives What are key parts of an AC charger? How does AC charging work? What are types of connectors used for AC charging ? How can the

SLIDE 1

AC charging of EVs

Dr. Gautham Ram Chandra Mouli, Delft University of Technology

SLIDE 2

Learning objectives

What are key parts of an AC charger?
How does AC charging work?
What are types of connectors used for AC charging ?
How can the AC charging power be calculated?

SLIDE 3

AC charger

Vehicle Connector Vehicle Inlet Infrastructure plug Infrastructure socket outlet

SLIDE 4

Basic AC charging configurations

SLIDE 5

AC Charging: Types

SLIDE 6

AC Charger types : Overview

Type 1 US/Japan SAE Type 2 Europe Mennekes/Tesla Tesla US

Image courtesy: Phoenix contact (www.phoenixcontact.com), scame.com, EV plug alliance

Type 3 EV plug alliance Tesla US

SLIDE 7

AC connector - Type 1

Image courtesy: Phoenix contact (www.phoenixcontact.com)

Single phase AC
Two AC pins, one earth, two

signal pins

Voltage and current ratings:

Voltage 120V or 240V; Current up to 80A;

J1772 connector

L1 L2/N Control Pilot Proximity Pilot Protective Earth

SLIDE 8

AC connector - Type 2

Image courtesy: Phoenix contact (www.phoenixcontact.com)

Both single and three phase

AC charging

Two signal pins, five power

pins;

Voltage and current ratings:

1 phase 230V, up to 80A; 3 phase 400V, up to 63A;

Control Pilot Proximity Pilot L1 L2 L3 Protective Earth Neutral

SLIDE 9

Tesla US connector

By Great Drok (Own work)/CC BY-SA 4.0, via Wikimedia Commons

USA-> Proprietary connector

Europe-> Type 2

Same connector for AC and DC
Max AC power of 17.2kW when

connected to 240V AC

Protective Earth Control pins Power pins

SLIDE 10

AC charging: Type 1 & Type 2

Control pilot Proximity pilot Monitor connection between EV & charger 2 Signal Pins Set maximum Charge current Imax

PWM signal

Actual charge current Iac

≥

SLIDE 11

AC Charging Power

SLIDE 12

Calculating AC charging power

Single phase: Pch=VacIac Three phase: Pch=√3(V3acIac)

Charging power, Pch Single phase AC voltage, Vac Three phase line-to-line AC voltage, V3ac Grid current, Iac

SLIDE 13

Charging time and charging power

Charge power Pch(kW) Charge time tch (hour) Battery capacity Ebatt (kWh)

Times to Charge 30kWh and 100kWh Battery

batt ch ch batt ch ch

E P t E t P = ´ =

3Ф 400V, 32A, 22.2kW 3Ф 400V, 16A, 11.1kW 230V, 32A 7.4kW 230V, 16A 3.7kW 120V, 16A, 1.9kW

SLIDE 14

AC charging

Dr. Gautham Ram Chandra Mouli, Delft University of Technology