Article

Sakthivel C, JCT College of Engineering and Technology, Coimbatore, Tamil Nadu; V. Jethose ,JCT College of Engineering and Technology, Coimbatore, Tamil Nadu; K. Selvakumar ,SRM University; K. Raja ,Knowledge Institute of Technology, Salem, Tamilnadu; P. Dinesh Kumar ,Muthayammal Engineering College, Rasipuram, Namakkal , Tamilnadu

We have introduced a microcontroller controlled thermoelectric generator(a turbine free system) which transforms geothermal energy, one of the renewable energy sources, to directly electrical energy and then the system was tested and its performance analysis is explained. In the system, energy transformation is provided by the thermoelectric modules. Since changeable DC voltage depending on temperature difference is obtained by the thermoelectric modules which are used to charge a battery or accumulator. The regulator circuit and inverter circuit are used in order to obtain the values 5V DC, 12V DC and 220V AC in the electrical energy. System control signals are arranged by using the PIC16F877 microcontroller in the system. The system is quite useful to meet electrical energy needs easily, cleanly and cheaply from the geothermal sources.