Power Controllability of Active Magnetic Energy Harvesters Operating Under High Primary Currents

The paper quantifies controllability of power harvested by a clamped-type active magnetic energy harvester (AMEH), supplying power to constant voltage load (CVL) via controlled rectifier. The AMEH is assumed to be clamped around a 50Hz power line conductor carrying relatively high currents. Transfer window opening instant is considered as the system control input and its influence on harvested AMEH power within feasible operation range is derived analytically and validated experimentally. Experimental results are shown to accurately verify corresponding analytical predictions.