Title :
An Inductor-less Micro Solar Power Management System Design for Energy Harvesting Applications
Author :
Shao, Hui ; Tsui, Chi-ying ; Ki, Wing-Hung
Author_Institution :
Dept. of Electron. & Comput. Eng., Hong Kong Univ. of Sci. & Technol.
Abstract :
A micro solar power management system is presented for energy harvesting applications. An inductor-less solution is proposed which facilitates the system on-chip integration. The authors target at the applications working in different lighting environments ranging from strong sunlight to dim lighting where the output voltage from the photovoltaic (PV) cells is low. A charge pump is used to step up the PV voltage to charge a battery or directly operate the circuit. The solar power system behavior is analyzed and the control strategy is derived in order to achieve maximum power transferred from the PV cells to battery or computation circuit. Simulations for the power management system were carried out to verify the proposed control strategy.
Keywords :
battery management systems; photovoltaic cells; power supplies to apparatus; power system control; secondary cells; solar power; system-on-chip; charge pump; control strategy; energy harvesting applications; inductor less power management system; lighting environments; maximum power transfer; micro solar power management system; photovoltaic cells; solar power system; system on-chip integration; Batteries; Charge pumps; Circuits; Energy management; Photovoltaic systems; Power system management; Solar energy; Solar power generation; System-on-a-chip; Voltage;
Conference_Titel :
Circuits and Systems, 2007. ISCAS 2007. IEEE International Symposium on
Conference_Location :
New Orleans, LA
Print_ISBN :
1-4244-0920-9
Electronic_ISBN :
1-4244-0921-7
DOI :
10.1109/ISCAS.2007.378478
