A High-Efficiency Charger With Adaptive Input Ripple MPPT for Low-Power Thermoelectric Energy Harvesting Achieving 21% Efficiency Improvement

Jeong, Junwon; Shim, Minseob; Maeng, Junyoung; Park, Inho; Kim, Chulwoo

doi:10.1109/tpel.2019.2912030

Cited by 27 publications

(10 citation statements)

References 25 publications

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“…Constant impedance load (CIL) is directly connected in parallel with DC bus by resistive load. In general, to obtain higher power generation efficiency and improve economic benefits, DG units such as fans and photovoltaic units adopt maximum power point tracking (MPPT) operation mode [9] .…”

Section: Structure and Characteristics Analysis Of DC Microgrid Systemmentioning

confidence: 99%

Multi source coordinated control strategy for electric hydrogen coupling isolated DC microgrid

zhao,

jia

2024

Fourth International Conference on Mechanical, Electronics, and Electrical and Automation Control (METMS 2024)

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Section: Structure and Characteristics Analysis Of DC Microgrid Systemmentioning

confidence: 99%

Multi source coordinated control strategy for electric hydrogen coupling isolated DC microgrid

zhao,

jia

2024

Fourth International Conference on Mechanical, Electronics, and Electrical and Automation Control (METMS 2024)

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“…Formula ( 3) can be sorted out to obtain the relationship between the input voltage and the converter's output voltage, as shown in (4). From (4), it can be known that the flyback converter can achieve the purpose of boosting or bucking voltage by designing the transformer turn ratio and changing the duty cycle (DC).…”

Section: Charger Architecturementioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

“…Nowadays, numerous battery-charging-control strategies have been proposed and discussed [4][5][6][7][8][9][10][11][12][13]. Jeong et al proposed the adaptive-input ripple (AIR) maximum powerpoint tracking (MPPT) technique for battery charging [4]. Liu et al discussed an automatic voltage-compensation method based on changing the charging current for the battery charger [5].…”

Section: Introductionmentioning

confidence: 99%

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A Multifunctional, Non-Constant Current Charger Based on a Dual-Switching, Bidirectional Flyback Converter

et al. 2022

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This study implements a multifunctional charger based on a dual-switching, bidirectional flyback converter (DSBFC). The proposed charger adopts seven charging methods, including the incremental-current charging, constant-voltage (CV) charging, constant-current (CC) charging, pulse-current (PC) charging, triangular-current (TC) charging, sinusoidal-current (SC) charging, and positive/negative pulse-current (Reflex) charging methods. The charging process of a lithium-ion battery is divided into three stages: an initial term, a mid-term, and a final term. In the initial term, the incremental-current charging method is used in the initial term of charging for a soft start and to inhibit an increase in temperature. In the mid-term, five charging methods, including CC, PC, TC, SC, and Reflex-current charging, are used for charging. The CV charging method prevents overcharging the lithium-ion battery in the final term. Based on our experimental results, this study compares the four charging methods (PC, TC, SC, and Reflex-current) with the CC charging method to verify their improvement of the charging speed and increase in temperature in the mid-term. The charging speeds increased by 14.38%, 14.04%, 16.36%, and 27.27%, respectively, and the rise in temperature decreased by 37.8%, 40.5%, 48.6%, and 13.51%, respectively; all performed better than the CC charging method. Finally, users can adjust the charging method of the proposed DSBFC according to the needs of batteries so as to achieve excellent performance.

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“…However, the voltage gain of the converters is low. In addition, the input current is discontinuous, which reduces the lifetime of fuel cell 27‐29 and efficiency of maximum power point tracking (MPPT) for the PV array 30‐32 . The input current is continuous in conventional current‐source converters, but the output current is discontinuous in them 33‐35 .…”

Section: Introductionmentioning

confidence: 99%

Boost and full‐bridge integrated converter for wide input‐voltage range application

Yao

Liu

2021

Int Trans Electr Energ Syst

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Summary The output voltage of fuel and solar cells varies extensively and is often low. Thus, high step‐up DC‐DC converters in DC microgrid should be suitable for an extensive input‐voltage range application. However, the voltage stress of rectifier diodes is high in an extensive voltage range in voltage‐source converters. In addition, the input current of the converter should be continuous to obtain a high lifetime of fuel cell and to realize maximum power point tracking (MPPT) for the PV array. Output current of the converter should be continuous to use a film capacitor, which can improve the lifetime and reliability of the converter. Thus, a boost and full‐bridge integrated converter is proposed. Switches in the boost converter are shared with the full‐bridge converter to reduce the number of switches. Since transformer secondary to primary turns ratio is reduced compared to voltage‐source converters, voltage stress of rectifier diodes is low. As there are input and output inductors in the proposed converter, input and output currents are continuous. Operating principle is elaborated. Design guidelines and example are illustrated. The loss calculation of the proposed converter is given. Finally, simulation and experimental results confirm the theoretical analysis. The proposed converter can be used in the wide input‐voltage range application.

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A High-Efficiency Charger With Adaptive Input Ripple MPPT for Low-Power Thermoelectric Energy Harvesting Achieving 21% Efficiency Improvement

Cited by 27 publications

References 25 publications

Multi source coordinated control strategy for electric hydrogen coupling isolated DC microgrid

Multi source coordinated control strategy for electric hydrogen coupling isolated DC microgrid

A Multifunctional, Non-Constant Current Charger Based on a Dual-Switching, Bidirectional Flyback Converter

Boost and full‐bridge integrated converter for wide input‐voltage range application

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