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This paper proposes a new control algorithm to tune the input current of the AC-DC converter in an inductive energy harvester, in order to achieve maximum power transfer to a load. The conventional phase regulating method normally achieves maximum power transfer by using the input voltage as the reference. However, in a harvester the internal inductance makes measurement of input voltage inaccessible...
This research proposes a bridgeless rectification circuit for impedance matching and voltage boosting of a Wi-Fi energy harvesting system. The impedance matching is achieved by an LCL T-network in parallel with an inductive branch, and such an arrangement can boost the voltage by combined effect of T-network and bipolarity charging of the output capacitor. The return loss equation and an estimated...
A system to emulate railway DC systems is presented in this paper. The emulator is designed to simulate the behavior of railway systems in terms of stray currents and touch voltages. Power electronics circuits are used as variable resistors to simulate the train motion. The emulator provides a test-bed to not only study and analyze the effects of stray currents and touch voltages, but to also evaluate...
Multi-coil links are generally introduced to improve the efficiency and extend the energy transmission distance. However, most of them are relay solutions which are equivalent to reduce the distance. In this paper, two kinds of 3-and three kinds of 4-coil links unchanging the energy transmission distance are proposed respectively. Among these links, by comparing the characteristics, the appropriate...
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