Optimal design of adaptive maximum-power-point tracking algorithm for thermoelectric based battery energy storage system

For a thermoelectric generator based small battery energy storage system, the adaptive maximum power point tracking (MPPT) algorithm based on incremental impedance is presented. The small signal model is mathematically derived and analyzed in frequency domain. Based on the frequency domain information, the design procedure is proposed with some practical considerations. The design methodology has been implemented and verified with hardware experiments. Dynamic response agrees with the targeted bandwidth very well.