mppt dc/dc converter design for photovoltaic powered electric vehicle charging system
DESCRIPTION
MPPT DC/DC Converter Design for Photovoltaic Powered Electric Vehicle Charging System. Fearghal Kineavy 4 th Energy Systems Engineering – Electrical Stream Department of Electrical and Electronic Engineering, NUIG Supervisor: Dr Maeve Duffy Co-Supervisor: Dr Edward Jones. Aim of the Project. - PowerPoint PPT PresentationTRANSCRIPT
Fearghal Kineavy4th Energy Systems Engineering – Electrical Stream
Department of Electrical and Electronic Engineering, NUIG
Supervisor: Dr Maeve Duffy
Co-Supervisor: Dr Edward Jones
MPPT
DC/DC
Converter
DC/AC
Inverter to
grid
Onboard
AC/DC
Rectifier and
charger
DC
Charging
Unit
OR
Best selling electric car in Ireland in 2011 80kW AC Motor Max speed of more than 140km/h Max range approx. 175km 24kWh Li-ion battery 48 modules connected in series
Home charge point (AC)◦ Single phase 16A (3.6kW) supply◦ 6-8 hours to charge
Public charge point (AC)◦ 3 phase supply◦ 2-3 hours to charge
Fast charge points (DC)◦ 400V DC, 120A (50kW) supply◦ 20-25 minutes charges EV to approx. 80% charge
CHAdeMO Connector(DC current)
Mennekes Type 2Connector (AC
current)
Extensive research done into:◦ Nissan leaf battery and other li-ion batteries◦ PV panels◦ DC/DC converters◦ Maximum Power Point Tracking (MPPT)
Begun designing small scale charging system to prove concept◦ PV panel, li-ion cell and charger chosen◦ Buck converter will be used, inductor and capacitor values to be
chosen◦ MPPT will be implemented using PWM from an arduino to
control the duty cycle (Perturb and Observe MPPT)
Test Spectra 10W PV panel to determine I-V and P-V curves Choose suitable current sensor Test charge li-ion cell with DC source to determine charging
profile
Create SPICE simulation circuit to help choose appropriate values for the buck converter components
Design and do detailed simulation of full size system using SPICE◦ Scale up demonstration SPICE model◦ Will most likely have to change model to a boost converter for
full size system◦ Alter component values accordingly◦ Analyse the system at various operating conditions (full load,
half load etc.) Compare full size DC charging system with alternative DC-
AC-DC system (better efficiency?) Compile results and write final report