Battery-Assisted Battery Charger with Maximum Power Point Tracking for Thermoelectric Generator: Concept and Experimental Proof

This paper proposes a concept of battery-assisted battery charger with maximum power point tracking for DC energy transducer such as thermoelectric generator and photo voltaic generator, and shows experimental results to prove the concept. The DC energy transducer is connected in series with a batte...

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Main Authors: Shunsuke Tanabe, Toru Tanzawa
Format: Article
Language:English
Published: MDPI AG 2023-09-01
Series:Electronics
Subjects:
Online Access:https://www.mdpi.com/2079-9292/12/19/4102
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author Shunsuke Tanabe
Toru Tanzawa
author_facet Shunsuke Tanabe
Toru Tanzawa
author_sort Shunsuke Tanabe
collection DOAJ
description This paper proposes a concept of battery-assisted battery charger with maximum power point tracking for DC energy transducer such as thermoelectric generator and photo voltaic generator, and shows experimental results to prove the concept. The DC energy transducer is connected in series with a battery to increase the voltage. The plus terminal for the DC energy transducer is connected with the input terminal of a DC-DC buck converter, whereas the battery is connected with the output terminal of the converter. Thus, the current is boosted from the input to the output. When the net current to the battery is positive, the system works as a battery charger. To extract the as much power from the DC energy transducer as possible for high charging efficiency, maximum power point tracking is introduced. The converter was designed in 180 nm 3V CMOS with a silicon area of 1.05 mm<sup>2</sup>. The concept was experimentally proven by varying the reference voltages to control the input voltage. An all-solid-state battery was charged up from 2.2 V to 2.3 V in two hours by the converter with a flexible thermoelectric generator which had an open-circuit voltage of 0.6 V.
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spelling doaj.art-b9e799b778be48cb878b585283698e702023-11-19T14:17:15ZengMDPI AGElectronics2079-92922023-09-011219410210.3390/electronics12194102Battery-Assisted Battery Charger with Maximum Power Point Tracking for Thermoelectric Generator: Concept and Experimental ProofShunsuke Tanabe0Toru Tanzawa1Graduate School of Integrated Science and Technology, Shizuoka University, Hamamatsu 432-8561, JapanGraduate School of Integrated Science and Technology, Shizuoka University, Hamamatsu 432-8561, JapanThis paper proposes a concept of battery-assisted battery charger with maximum power point tracking for DC energy transducer such as thermoelectric generator and photo voltaic generator, and shows experimental results to prove the concept. The DC energy transducer is connected in series with a battery to increase the voltage. The plus terminal for the DC energy transducer is connected with the input terminal of a DC-DC buck converter, whereas the battery is connected with the output terminal of the converter. Thus, the current is boosted from the input to the output. When the net current to the battery is positive, the system works as a battery charger. To extract the as much power from the DC energy transducer as possible for high charging efficiency, maximum power point tracking is introduced. The converter was designed in 180 nm 3V CMOS with a silicon area of 1.05 mm<sup>2</sup>. The concept was experimentally proven by varying the reference voltages to control the input voltage. An all-solid-state battery was charged up from 2.2 V to 2.3 V in two hours by the converter with a flexible thermoelectric generator which had an open-circuit voltage of 0.6 V.https://www.mdpi.com/2079-9292/12/19/4102DC energy transducerbattery chargerthermoelectric generatorconvertermaximum power pointsensor
spellingShingle Shunsuke Tanabe
Toru Tanzawa
Battery-Assisted Battery Charger with Maximum Power Point Tracking for Thermoelectric Generator: Concept and Experimental Proof
Electronics
DC energy transducer
battery charger
thermoelectric generator
converter
maximum power point
sensor
title Battery-Assisted Battery Charger with Maximum Power Point Tracking for Thermoelectric Generator: Concept and Experimental Proof
title_full Battery-Assisted Battery Charger with Maximum Power Point Tracking for Thermoelectric Generator: Concept and Experimental Proof
title_fullStr Battery-Assisted Battery Charger with Maximum Power Point Tracking for Thermoelectric Generator: Concept and Experimental Proof
title_full_unstemmed Battery-Assisted Battery Charger with Maximum Power Point Tracking for Thermoelectric Generator: Concept and Experimental Proof
title_short Battery-Assisted Battery Charger with Maximum Power Point Tracking for Thermoelectric Generator: Concept and Experimental Proof
title_sort battery assisted battery charger with maximum power point tracking for thermoelectric generator concept and experimental proof
topic DC energy transducer
battery charger
thermoelectric generator
converter
maximum power point
sensor
url https://www.mdpi.com/2079-9292/12/19/4102
work_keys_str_mv AT shunsuketanabe batteryassistedbatterychargerwithmaximumpowerpointtrackingforthermoelectricgeneratorconceptandexperimentalproof
AT torutanzawa batteryassistedbatterychargerwithmaximumpowerpointtrackingforthermoelectricgeneratorconceptandexperimentalproof