Study of Generation of Waveform of Output Voltage for Voltage and Power Maximization in VEH Device

Abstract

Abstract

Vibration energy harvester is good source for sensors; and power conversion efficiency of electromagnetic devices is very low. Size of the device is one of the limitations for maximum voltage and power generated. This paper discusses various ways and combinations for voltage maximization. Maximum voltage is generated at resonance, also initial position of magnet at rest plays important role in voltage generated. Value of maximum voltage generated does not always ensure that power is maximum. Due to recent development in technology, sensors require more power for functioning. To fulfil demand for power, vibration energy harvesting (VEH) devices have to produce maximum power. This paper discusses wave form generation in VEH device. When top of magnet matches with centre of coil, voltage obtained is maximum. For higher amplitude, power is not maximum when voltage is maximum (top of magnet coinciding centre of coil). Voltage generated is more if height of magnet is same to height of the coil. For higher amplitude to get maximum power, centre of magnet coinciding with centre of coil is preferred. For 14 mm amplitude with centre of magnet matching with centre of coil, voltage induced is 540.91 mV and top of magnet matching centre of coil, voltage induced is 685.45 mV.

Keywords: MEMS, VEH, sensors, power, magnet, coil, electromagnetic, multi-frequency, magnet position, coil position, magnet offset

Cite this Article

Arun Bhosale, Anderson A, Deshmukh Suhas P, et al. Study of Generation of Waveform of Output Voltage for Voltage and Power Maximization in VEH Device. Recent Trends in Sensor Research and Technology. 2017; 4(1): 1–6p.