A Numerical Analysis of Current Waveforms in Circulating Current Control Circuit with the Third Harmonics for Vibration Generator

The energy harvesting includes a vibration generator. As the vibration generators provide very low power, the improvement of the performance is required in order to use the power. Then, we proposed a circulating current control circuit for the vibration generators. The proposed circuit improved the output power under single frequency. However, the vibrated source provides not only single frequency but also any harmonics. Therefore, this paper focuses on the fundamental and the third harmonic vibration. This paper numerically analyzes current waveforms in the proposed circuit.