MPPT Boost Converter
Maximum power point trackers (MPPTs) are used to ensure that maximum power is transferred to a device from a range of renewable energy input applications, such as thermoelectric generators (TEGs), photovoltaic (PV) panels, and inductive power transfer (IPT) systems. An impedance-matching method was developed for a closed-loop digital control system. It provides MPPT for input applications that have an approximately fixed internal resistance, such as TEGs and IPTs. The method has been analyzed and used to construct the prototype converter with an MCU performing control operations. A modified model might be suitable for input applications that have a variable internal resistance due to temperature, light or both.
Ian Johnson, Sajjad Lalji, David Weight