Abstract This article introduces a new hybrid system that combines solar photovoltaic (SPV) and thermoelectric generator (TEG) sources for delivering a regulated output. The main power source is the SPV, which is connected to a boost converter. The TEG acts as a secondary source. In a conventional system without a storage provision like a battery, fluctuations in sunlight could impact the power delivered to the load. In the proposed system, the TEG quickly compensates for these fluctuations, ensuring a stable output voltage across the load or a steady current through a fixed resistive load. This system eliminates the need for a storage battery to maintain a regulated output. The SPV power is optimized using a Sliding Mode Controlled (SMC) maximum power point tracking (MPPT) boost converter. The TEG section, controlled by another SMC, uses a buck converter. The output voltages from both converters are combined and applied across the load. Simulation results in MATLAB and experimental prototypes confirm that this system effectively compensates for real-time changes in solar irradiance, making it an efficient hybrid solar power system.
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Poornima et al. (2024) studied this question.
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