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Switched-Capacitor Boost Converter for Low Power Energy Harvesting Applications

Author

Listed:
  • Miran Rodič

    (Faculty of Electrical Engineering and Computer Science, University of Maribor, Koroška Cesta 46, SI-2000 Maribor, Slovenia)

  • Miro Milanovič

    (Faculty of Electrical Engineering and Computer Science, University of Maribor, Koroška Cesta 46, SI-2000 Maribor, Slovenia)

  • Mitja Truntič

    (Faculty of Electrical Engineering and Computer Science, University of Maribor, Koroška Cesta 46, SI-2000 Maribor, Slovenia)

  • Benjamin Ošlaj

    (Faculty of Electrical Engineering and Computer Science, University of Maribor, Koroška Cesta 46, SI-2000 Maribor, Slovenia)

Abstract

The paper presents a Switched-Capacitor Boost DC-DC Converter (SC-BC) which can be used in energy harvesting applications using thermoelectric generators (TEGs) with low output voltage, low power and a significant internal resistance. It consists of a switching capacitor circuit, where MOSFETs are used as switches, and a boost stage. The converter is a modification of a previously presented scheme in which diodes are used in the switched capacitor stage. A higher voltage gain and an increased efficiency can thus be achieved. The model of the converter was developed considering the internal resistance of the TEG and boost stage inductor. A comparison with the diode based converter is shown, with consideration of the TEG internal resistance. Calculation is presented of the main passive components. A control algorithm is also proposed and evaluated. It is based on a linearization approach, and designed for output voltage and inductor current control. The operation of both converter and control are verified with the simulation and experimental results.

Suggested Citation

  • Miran Rodič & Miro Milanovič & Mitja Truntič & Benjamin Ošlaj, 2018. "Switched-Capacitor Boost Converter for Low Power Energy Harvesting Applications," Energies, MDPI, vol. 11(11), pages 1-29, November.
    • Handle: RePEc:gam:jeners:v:11:y:2018:i:11:p:3156-:d:182860
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    References listed on IDEAS

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    1. Van-Thuan Tran & Minh-Khai Nguyen & Youn-Ok Choi & Geum-Bae Cho, 2018. "Switched-Capacitor-Based High Boost DC-DC Converter," Energies, MDPI, vol. 11(4), pages 1-15, April.
    2. Chih-Lung Shen & Po-Chieh Chiu & Yan-Chi Lee, 2016. "Novel Interleaved Converter with Extra-High Voltage Gain to Process Low-Voltage Renewable-Energy Generation," Energies, MDPI, vol. 9(11), pages 1-12, October.
    3. Yong-Seng Wong & Jiann-Fuh Chen & Kuo-Bin Liu & Yi-Ping Hsieh, 2017. "A Novel High Step-Up DC-DC Converter with Coupled Inductor and Switched Clamp Capacitor Techniques for Photovoltaic Systems," Energies, MDPI, vol. 10(3), pages 1-17, March.
    4. Chih-Lung Shen & Hong-Yu Chen & Po-Chieh Chiu, 2015. "Integrated Three-Voltage-Booster DC-DC Converter to Achieve High Voltage Gain with Leakage-Energy Recycling for PV or Fuel-Cell Power Systems," Energies, MDPI, vol. 8(9), pages 1-17, September.
    5. Shin-Ju Chen & Sung-Pei Yang & Chao-Ming Huang & Huann-Ming Chou & Meng-Jie Shen, 2018. "Interleaved High Step-Up DC-DC Converter Based on Voltage Multiplier Cell and Voltage-Stacking Techniques for Renewable Energy Applications," Energies, MDPI, vol. 11(7), pages 1-17, June.
    6. Sanjeevikumar Padmanaban & Mahajan Sagar Bhaskar & Pandav Kiran Maroti & Frede Blaabjerg & Viliam Fedák, 2018. "An Original Transformer and Switched-Capacitor (T & SC)-Based Extension for DC-DC Boost Converter for High-Voltage/Low-Current Renewable Energy Applications: Hardware Implementation of a New T & SC Bo," Energies, MDPI, vol. 11(4), pages 1-23, March.
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    Citations

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    Cited by:

    1. Akeel Othman & Jaromir Hrad & Jiri Hajek & Dusan Maga, 2022. "Control Strategies of Hybrid Energy Harvesting—A Survey," Sustainability, MDPI, vol. 14(24), pages 1-24, December.
    2. Alencar Franco de Souza & Fernando Lessa Tofoli & Enio Roberto Ribeiro, 2021. "Switched Capacitor DC-DC Converters: A Survey on the Main Topologies, Design Characteristics, and Applications," Energies, MDPI, vol. 14(8), pages 1-33, April.
    3. Tao Yang & Yong Liao, 2019. "Discrete Sliding Mode Control Strategy for Start-Up and Steady-State of Boost Converter," Energies, MDPI, vol. 12(15), pages 1-13, August.
    4. Xiaolin Wang & Ka Wai Eric Cheng & Yat Chi Fong, 2019. "Zero Current Switching Switched-Capacitors Balancing Circuit for Energy Storage Cell Equalization and Its Associated Hybrid Circuit with Classical Buck-Boost," Energies, MDPI, vol. 12(14), pages 1-15, July.
    5. Mauricio Dalla Vecchia & Giel Van den Broeck & Simon Ravyts & Johan Driesen, 2019. "Novel Step-Down DC–DC Converters Based on the Inductor–Diode and Inductor–Capacitor–Diode Structures in a Two-Stage Buck Converter," Energies, MDPI, vol. 12(6), pages 1-22, March.
    6. Se-Un Shin, 2019. "An Analysis of Non-Isolated DC-DC Converter Topologies with Energy Transfer Media," Energies, MDPI, vol. 12(8), pages 1-19, April.

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