@article{Chung:2003:10.1109/TPEL.2003.810841,
author = {Chung, HSH and Tse, KK and Ron, Hui SY and Mok, CM and Ho, MT},
doi = {10.1109/TPEL.2003.810841},
journal = {IEEE Transactions on Power Electronics},
pages = {717--724},
title = {A novel maximum power point tracking technique for solar panels using a SEPIC or Cuk converter},
url = {http://dx.doi.org/10.1109/TPEL.2003.810841},
volume = {18},
year = {2003}
}

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TY  - JOUR
AB  - A novel technique for efficiently extracting the maximum output power from a solar panel under varying meteorological conditions is presented. The methodology is based on connecting a pulse-width-modulated (PWM) dc/dc SEPIC or Cuk converter between a solar panel and a load or battery bus. The converter operates in discontinuous capacitor voltage mode whilst its input current is continuous. By modulating a small-signal sinusoidal perturbation into the duty cycle of the main switch and comparing the maximum variation in the input voltage and the voltage stress of the main switch, the maximum power point (MPP) of the panel can be located. The nominal duty cycle of the main switch in the converter is adjusted to a value, so that the input resistance of the converter is equal to the equivalent output resistance of the solar panel at the MPP. This approach ensures maximum power transfer under all conditions without using microprocessors for calculation. Detailed mathematical derivations of the MPP tracking technique are included. The tracking capability of the proposed technique has been verified experimentally with a 10-W solar panel at different insolation (incident solar radiation) levels and under large-signal insolation level changes.
AU  - Chung,HSH
AU  - Tse,KK
AU  - Ron,Hui SY
AU  - Mok,CM
AU  - Ho,MT
DO  - 10.1109/TPEL.2003.810841
EP  - 724
PY  - 2003///
SN  - 0885-8993
SP  - 717
TI  - A novel maximum power point tracking technique for solar panels using a SEPIC or Cuk converter
T2  - IEEE Transactions on Power Electronics
UR  - http://dx.doi.org/10.1109/TPEL.2003.810841
VL  - 18
ER  - 

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