Impedance modeling of electromagnetic energy harvesting system using full-wave bridge rectifier

Junrui Liang; Cong Ge; Yi-Chung Shu

doi:10.1117/12.2259870

11 April 2017 Impedance modeling of electromagnetic energy harvesting system using full-wave bridge rectifier

Junrui Liang, Cong Ge, Yi-Chung Shu

Proceedings Volume 10164, Active and Passive Smart Structures and Integrated Systems 2017; 101642N (2017) https://doi.org/10.1117/12.2259870
Event: SPIE Smart Structures and Materials + Nondestructive Evaluation and Health Monitoring, 2017, Portland, Oregon, United States

Abstract

In the conventional model of general vibration energy harvesters, the harvesting effect was regarded as only the electrically induced damping. Such intuition has overlooked the detailed dynamic contribution of practical power conditioning circuits. This paper presents an improved impedance model for the electromagnetic energy harvesting (EMEH) system considering the detailed dynamic components, which are introduced by the most extensively used full-wave bridge rectifier. The operation of the power electronics is studied under harmonic excitation. The waveforms, energy cycles, and impedance picture are illustrated for showing more information about the EMEH system. The theoretical prediction on harvesting power can properly describe the changing trend of the experimental result.

Citation Download Citation

Junrui Liang, Cong Ge, and Yi-Chung Shu "Impedance modeling of electromagnetic energy harvesting system using full-wave bridge rectifier", Proc. SPIE 10164, Active and Passive Smart Structures and Integrated Systems 2017, 101642N (11 April 2017); https://doi.org/10.1117/12.2259870

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