João Luiz Afonso

Learn More
Being the next big step in automobile industry, electric vehicles continue to have limited autonomy which associated with the long charging times, limited charging stations and undeveloped smart grid infrastructure demands for a hard planning of the daily use of the vehicle. This paper presents an information system that will help the driver in the daily(More)
This paper presents a mobile information system denominated as vehicle-to-anything application (V2Anything App) and explains its conceptual aspects. This application is aimed at giving relevant information to full electric vehicle (FEV) drivers by supporting the integration of several sources of data in a mobile application, thus contributing to the(More)
This paper describes an intelligent Vehicle to Grid (iV2G) Charging Platform for plug-in hybrid and electric vehicles that can be used at user's home, and which includes a mobile control system. The car drivers can control remotely the charging or discharging process through a mobile communication device. This mobile communication device can also gather(More)
This paper presents an improved five level bidirectional converter (iFBC) controlled by finite control set model predictive control (FCS-MPC). This control strategy consists in using the discrete time nature of the iFBC to define its state in each sampling interval. Using FCS-MPC the switching frequency is not constant; however, it is suitable to follow the(More)
The main objective of this tutorial is to present the basic concepts on the instantaneous p-q Theory and them show its applicability for controlling switching converters connected in a micro-grid. These converters can be used for connecting renewable energy sources (solar, wind, and others) to the microgrids or for harmonic, reactive power or unbalance(More)
The large dependency of the imported fossil fuels and the soaring oil prices, makes essential the look for alternatives to the traditional people transportation system. The natural bet is the electric mobility, namely Electric Vehicles (EV), and Plug-in Hybrid Electric Vehicles (PHEV). This way, in this paper is analyzed the potential impacts of the battery(More)
This paper describes the development of a low cost shunt active power filter with digital control, which allows dynamic power factor correction and both harmonics and zero-sequence current compensation. The active filter controller is based on the instantaneous power theory (p-q theory) and was implemented using a standard 16 bits microcontroller. The p-q(More)