Generating machines of electricity, using combustion engines and generate a great amount of residual thermal energy from the exhaust gases. This residual thermal energy can be converted into usable electricity using thermoelectric generator (TEG), which are manufactured cells with semiconductor materials employing the Seebeck effect. When recovering the waste heat in the exhaust ducts using TEG, increases the efficiency of electrical machines, because the same amount of fuel input generates more power or less intake of fuel, has the same amount the generated electric energy and thus less air pollution (as there will be less burning of fossil fuels) makes the system more sustainable. The purpose of this paper is present an electric generation plant using thermoelectric generator (TEG), which recover the thermal energy dissipated by combustion gases of an electric generator. The temperatures values are obtained through thermal imager and laser thermocouples type K. To improve the efficiency of generation is carried out the control and supervision of the temperature on the cold side of the TEG. The Supervisory System is responsible for data acquisition and generation of graphs and reports.

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The purpose of this paper is to model the operation of a thermoelectric generator (TEG), in order to simulate the process of power generation and control a converter connected between the TEG and the load. The Perturb and Observe (P&O) technique is validated by screening and operation of Maximum Power Point Tracking (MPPT) in generation systems based on TEG. The operation at maximum power point is obtained by changing the key's duty cycle of a DC-DC converter, chopper, boost type. To test the modeling and the correct operation of the P&O technical algorithm, a resistive load with different values for the same generation conditions was used.