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A robust maximum power point tracker with fully analog implementation

Kaboli, S ; Sharif University of Technology | 2017

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  1. Type of Document: Article
  2. DOI: 10.1109/PEDSTC.2017.7910375
  3. Publisher: Institute of Electrical and Electronics Engineers Inc , 2017
  4. Abstract:
  5. An analog circuit for maximum power point tracking of a PV battery charger with minimum number of elements is proposed which works in a full range condition with a fixed switching frequency. In conventional MPPT algorithms which provide PV current or voltage reference value as output, fast climate changes may cause system instability. Here, a new variable is defined to eliminate the problem and improve the stability of the system. In order to compare the presented circuit with a conventional system, perturb and observe (P&O) MPPT algorithm which is well-known in PV systems is implemented on the same system. Simulation results (Conventional P&O algorithm and proposed structure) are presented and compared which demonstrate performance and effectiveness of the proposed analog MPPT circuit. An experimental set up has been made which the results match with theory and simulation. © 2017 IEEE
  6. Keywords:
  7. Analog circuit ; Battery charger ; DC/DC converter ; Maximum power point tracking ; Photovo1taic ; Analog circuits ; Charging (batteries) ; Climate change ; Maximum power point trackers ; Power electronics ; System stability ; Analog implementation ; Battery chargers ; Conventional systems ; Experimental set up ; Fixed switching frequency ; Perturb and observe ; DC-DC converters
  8. Source: 8th Power Electronics, Drive Systems and Technologies Conference, PEDSTC 2017, 14 February 2017 through 16 February 2017 ; 2017 , Pages 490-495 ; 9781509057665 (ISBN)
  9. URL: https://ieeexplore.ieee.org/document/7910375