Energy harvesting devices are needed as an alternative to batteries it is costly power up wireless sensor network. However, the generated and operating bandwidth for typical energy harvester still compromised. Therefore, in this work, use of permanent magnet Piezoelectric Harvester (PEH) proposed increase bandwidth. A simulation study was conducted using COMSOL Multiphysics software observe eff...

An electromagnetic energy harvester with integrated CoNiMnP permanent magnet array is designed, fabricated and tested. Mechanical and magnetic simulations are performed to investigate the vibration characteristics and magnetic field distribution. The size and shape of the device are also optimized. CoNiMnP permanent magnet array is fabricated using electroplating technology instead of manually ...

An idling scheme of Synchronous Switch Harvesting on Inductor (SSHI) is proposed for piling up output voltage of the piezoelectric energy (PE) harvester cycle by cycle, to deal with the PE harvester’s low output voltage. The proposed rectifier integrates active diodes and a parallel-SSHI technique with a simple control scheme, and therefore has a high efficiency. The simulation results demonstr...

mills are able to accept chopped cane. In the past three years several locally developed whole stalk harvesters and imported chopper harvesters have come into use in many areas of the South African sugar industry. The Experiment Station therefore conducted time and motion studies during the past two seasons to assess the performance of these harvesters while operating under local field and crop...

This paper presents the design and evaluation of a novel permanent magnet (PM) energy harvesting system for scavenging electrical energy from ambient vibrations. A two-phase tubular linear PM vibration energy harvester consisting of a mover attached with permanent magnets and a slotted stator with built-in two-phase electromagnetic coils is proposed to convert vibrational kinetic energy into el...

The objective of this paper is to study the effect of the internal transducer resistance on the dynamic behaviour and the output power of an energy harvester when it is attached to a cubic load resistance. It is seen that by considering the internal resistance, the dynamic equation of a conventional nonlinear energy harvester changes so that it is not easy to separate the linear damping from th...

In order to extract as much energy as possible from ambient vibrations, many vibration-based energy harvesters (VEHs) are designed to resonate at a specific base excitation frequency. Unfortunately, many vibration energy sources are low frequency (0.5 Hz-100 Hz), intermittent, and broadband. Thus, resonant VEHs would not be excited continuously and would require a large mass or size to tune to ...

Harvesting mechanical energy is becoming increasingly important for its availability and abundance in our living environment. Triboelectric nanogenerator (TENG) is a simple, cost-effective, and highly efficient approach for generating electricity from mechanical energies in a wide range of forms. Here, we developed a TENG designed for harvesting tiny-scale wind energy available in our normal li...

Human motion energy harvesting as an alternative to battery powering in body worn and implanted devices is challenging during prolonged periods of inactivity. Even a buffer energy storage system will run out of power eventually if there is no external acceleration to the harvester. This paper presents a method to actuate the rotor inside a previously presented rotational piezoelectric energy ha...