• The Transactions of The Korean Institute of Electrical Engineers
• /
• v.60 no.3
• /
• pp.471-478
• /
• 2011

This paper proposes a method of maximum power point tracking (MPPT) using fuzzy logic control for grid-connected photovoltaic systems (PV). First, for the purpose of comparison, because of its proven and good performances, the incremental conductance (IncCond) technique is briefly introduced. A double fuzzy logic controller (DFLC) based MPPT is then proposed which has shown better performances compared to the IncCond MPPT based approach. Modeling and Simulation in grid-connected PV system results are provided for both controllers under same atmospheric condition based PSCAD/EMTDC. The double fuzzy logic MPPT controller is then simulated and evaluated, which has shown better performances.

• Proceedings of the Korean Institute of Information and Commucation Sciences Conference
• /
• 2012.10a
• /
• pp.255-258
• /
• 2012

In this paper, with a thermoelectric device using the seebeck effect which generates electromotive force by temperature difference generates electric energy an energy harvesting circuit using MPPT(Maximun Power Point Traking) control is designed. After periodically sampling the open voltage of the thermoelectric device, the 1/2 voltage of open voltage which in a maximum power point is maintained through MPPT control circuit and harvested energy from thermoelectric device is delivered to load through a switch. The proposed thermal energy harvesting circuit is designed with $0.35{\mu}m$ CMOS process and the chip area excluding pads is $1168.7{\mu}m{\times}541.3{\mu}m$.