Development of Hybrid Energy Harvester for Self-Powered Environmental Sensor

The purpose of this research is to come out with a new type of energy harvester
which is capable to produce higher output power as compared to the conventional energy
harvester. This new model is known as hybrid energy harvester as it has both Piezoelectric
and Magnetostrictive energy harvesters. The conventional energy harvester has some
limitations i.e. it produces smaller output power and not quite sufficient to power up the
low powered electronic devices, plus some of them only works in certain range of
frequencies. With more than one energy harvesters are integrated, we can cover wider
range of frequencies and able to increase the output power of this harvester. To construct
the hybrid energy harvester, a mathematical model is first develop, then a simulation is
carried out with MATLAB/Simulink. Circuit design and the prototype device are designed
next. The mathematical model shows the basic concept of energy conversion from
mechanical to electrical which is later simulated with MATLAB/Simulink.