TY - JOUR
T1 - A regulated charge pump with a low-power integrated optimum power point tracking algorithm for indoor solar energy harvesting
AU - Kim, Jungmoon
AU - Kim, Jihwan
AU - Kim, Chulwoo
N1 - Funding Information:
Manuscript received August 11, 2011; revised October 11, 2011; accepted October 21, 2011. Date of publication November 16, 2011; date of current version December 14, 2011. This work was supported by the National Research Foundation of Korea funded by the Ministry of Education, Science and Technology of the Government of Korea under Grant 2010-0018875. This paper was recommended by Associate Editor G. A. Rincon-Mora.
PY - 2011/12
Y1 - 2011/12
N2 - This brief presents a regulated charge pump (CP) with an integrated optimum power point tracking (OPPT) algorithm designed for indoor solar energy harvesting. The proposed OPPT circuit does not require a current sensor that consumes power proportionally to the load. The solar cell voltage is regulated at the optimum power point; the CP output is regulated according to the target voltage. The controller of the OPPT circuit and CP dissipates only 450 nW; thus, the proposed technique is appropriate for indoor solar energy harvesting applications under dim lighting conditions.
AB - This brief presents a regulated charge pump (CP) with an integrated optimum power point tracking (OPPT) algorithm designed for indoor solar energy harvesting. The proposed OPPT circuit does not require a current sensor that consumes power proportionally to the load. The solar cell voltage is regulated at the optimum power point; the CP output is regulated according to the target voltage. The controller of the OPPT circuit and CP dissipates only 450 nW; thus, the proposed technique is appropriate for indoor solar energy harvesting applications under dim lighting conditions.
KW - Battery charger
KW - Charge pump (CP)
KW - Maximum power point tracking (MPPT)
KW - Optimum power point tracking (OPPT)
KW - Photovoltaic (PV) systems
KW - Solar energy harvesting
KW - Wireless sensor networks (WSNs)
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U2 - 10.1109/TCSII.2011.2173971
DO - 10.1109/TCSII.2011.2173971
M3 - Article
AN - SCOPUS:83655167007
VL - 58
SP - 802
EP - 806
JO - IEEE Transactions on Circuits and Systems I: Regular Papers
JF - IEEE Transactions on Circuits and Systems I: Regular Papers
SN - 1549-8328
IS - 12
M1 - 6082411
ER -