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Dijital Arşivi

A high voltage triboelectric energy harvesting system utilizing parallel-SSHI rectifier and DC-DC converters for SUB-5 hz motions

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dc.contributor Ph.D. Program in Electrical and Electronic Engineering.
dc.contributor.advisor Mutlu, Şenol.
dc.contributor.advisor Doğan, Hakan.
dc.contributor.author Kara, İsmail.
dc.date.accessioned 2023-03-16T10:25:37Z
dc.date.available 2023-03-16T10:25:37Z
dc.date.issued 2020.
dc.identifier.other EE 2020 K36 PhD
dc.identifier.uri http://digitalarchive.boun.edu.tr/handle/123456789/13155
dc.description.abstract In this thesis, the first integrated circuit (IC) implementation of parallel synchronized switching harvesting on inductor (parallel-SSHI) is presented for triboelectric energy harvester targeting 1 Hz to 5 Hz mechanical motions. It is accompanied by on-chip buck and switched-capacitor DC-DC converters, all capable of handling 70 V levels. Unlike piezoelectric harvesters, triboelectric nanogenerators (TENGs) can produce very high open-circuit voltages; thus, the proposed system utilizes this property within the technology limits to maximize the extracted power. An in-house manufactured TENG using steel and polytetra uoroethylene (PTFE) is modeled for sub-5 Hz motions. The energy is extracted and stored in an external capacitance until its voltage reaches 70 V, which is achieved in three press-and-release mechanical cycles. 70-to-2 V down conversion is carried on by a 70-to-10 V buck converter followed by a 10-to-2 V switched-capacitor DC-DC converter. A chip is manufactured in TSMC 0.18 m HV BCD process with an active area of 6.25 mm2. End-to-end peak e ciency is measured as 32.71% for 1 Hz motion with a 722 W total power delivery to the load for 4 ms.
dc.format.extent 30 cm.
dc.publisher Thesis (Ph.D.) - Bogazici University. Institute for Graduate Studies in Science and Engineering, 2020.
dc.subject.lcsh Smart cards.
dc.subject.lcsh Nanotechnology.
dc.title A high voltage triboelectric energy harvesting system utilizing parallel-SSHI rectifier and DC-DC converters for SUB-5 hz motions
dc.format.pages xvii, 93 leaves ;


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