期刊
IEEE TRANSACTIONS ON INDUSTRIAL ELECTRONICS
卷 51, 期 1, 页码 74-80出版社
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/TIE.2003.822087
关键词
battery chargers; microsensor; photovoltaic cells; power system; voltage control
This paper presents a simple low-power control circuit intended to manage the power within a remote autonomous microsystem hybrid power supply, A hybrid power supply has only recently been discussed in the literature as a microsystem power source solution. The power management circuitry, which is a key component within a hybrid power supply, has not been adequately explored. Although a variety of components could have been implemented, the control circuit in this paper was designed for a hybrid,power supply that utilizes a Ni/Zn microbattery and silicon solar cell. The circuit also employs a shunt architecture powered only by the solar cell to minimize the overall energy consumption of the hybrid power supply. The control circuit consumes a maximum of 7 muA and appropriately manages power even when the hybrid power supply is connected to a microsystem and is experiencing environmental variations. Details of the control circuit are discussed and simulations combined with experimental results demonstrate its performance.
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