The University of Auckland

Project #4: A DC-AC Inverter for Grid-Integration of EVs



Future EVs are expected to be used to provide services to the grid, to support expected high penetration levels of renewable generation. Wired and wireless EV chargers therefore are expected to employ grid-inverters that are capable of providing services such as VAR injection, demand control, G2V and V2G services, improving power quality, etc.
The aim of this project is to develop a grid-inverter suitable to be used with wireless/wired EV chargers that can also provide grid services. The students are expected to design a 3.7 kW grid-inverter and a suitable closed loop controller that meets IEC61000-3-2 requirements. The design should be first verified using PLECS simulation. The closed loop controller will be then implemented on an STM32 and verified using PLECS PIL test feature to investigate its performance. Finally the students will develop and build a prototype converter to experimentally validate the design.


Research Components
- Research DC-AC inverter topologies and control schemed suitable for this application
- Research how to use PIL test feature to effectively test control algorithms
- Research how to minimise impact on EV battery while providing services to the grid


At least one student must be enrolled in ELECTENG 734 and ELECTENG 735.
Preferably at least one of the students should be familiar with embedded programming as the implementation of a closed loop controller on an STM32 is a major component of this project.








Lab allocations have not been finalised