期刊
IEEE TRANSACTIONS ON INDUSTRIAL ELECTRONICS
卷 69, 期 9, 页码 9155-9164出版社
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/TIE.2021.3113016
关键词
Inductors; Voltage; Switches; Vibrations; Switching circuits; Detectors; Synchronization; Energy harvesting; piezoelectric; parallel synchronized switch harvesting on inductor (P-SSHI); synchronous electric charge extraction (SECE); vibration
资金
- Research Grants Council of the Hong Kong Special Administrative Region [CityU 11212021, CityU 21210619]
- Shenzhen Fundamental Research Program [JCYJ20200109143206663]
- National Natural Science Foundation of China [11902282]
This article proposes an interface circuit scheme for managing multiple PEHs and achieving multi-input conversion from PEH arrays. A self-powered three-channel array circuit is constructed to demonstrate the circuit's capability and power output enhancement. Compared with the classic full-bridge circuit, the proposed circuit significantly increases the power output.
Piezoelectric energy harvester (PEH) arrays are promising in many application scenarios. However, few interface circuits have been developed to manage the multiple ac inputs from PEHs. This article proposes an extensible parallel synchronized switch harvesting on inductor array interface scheme to realize a multiinput conversion from PEH arrays. We develop a split-inductor-capacitor topology that can extract electrical energy from multiple PEHs. The proposed circuit topology effectively handles the inductor access conflict in the cases of PEHs with close, identical, and opposite vibration phases, insensitive to ac input phase changes. For demonstrating the capability of dealing with multiple ac inputs from PEHs and the enhancement effect on power output, we construct and test a self-powered three-channel array circuit with the passive peak detection function. Excited by sinusoidal vibrations, our circuit effectively avoids the energy return and efficiently achieves the power combination of the three PEHs. Compared with the classic full-bridge circuit, the proposed circuit helps increase the power output by 4.8 times. Also, to show the universality of the circuit, the circuit's operation under various excitations istested and analyzed.
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