DocumentCode :
3099463
Title :
Energy harvesting for autonomous wind sensor in remote area
Author :
Ang, R.J. ; Tan, Y.K. ; Panda, S.K.
Author_Institution :
Nat. Univ. of Singapore, Singapore
fYear :
2007
fDate :
5-8 Nov. 2007
Firstpage :
2104
Lastpage :
2109
Abstract :
In this paper, an energy harvesting scheme using wind energy to power a remote area wind sensor is proposed. The two main characteristics of the proposed scheme are: (1) to harness wind energy and convert it to electrical energy to power the associated electronic circuits and (2) to sense the wind speed indirectly by measuring the equivalent electrical voltage. A low-powered buck converter with feedforward control has been designed and implemented with special focus on the PWM generator circuitry to have very low quiescent current of the order of 400 muA. Experimental results obtained demonstrate that the wind speed can be sensed with reasonable accuracy and the sensed wind speed can be transmitted in the form of a 12-bit encoded digital signal through the RF transmitter using the harvested energy. At a wind speed of 4.5 m/s, the RF transmitter circuit consumes about 4.1 mW of electrical power to continuously transmit the wind speed information to the base station at a regular interval of 20 ms.
Keywords :
feedforward; power convertors; power generation control; voltage measurement; wind power; PWM generator circuitry; RF transmitter; autonomous wind sensor; energy harvesting; equivalent electrical voltage measurement; feedforward control; low-powered buck converter; wind energy; Electric variables measurement; Electronic circuits; Energy measurement; Power measurement; Radio frequency; Sensor phenomena and characterization; Transmitters; Velocity measurement; Wind energy; Wind speed;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Industrial Electronics Society, 2007. IECON 2007. 33rd Annual Conference of the IEEE
Conference_Location :
Taipei
ISSN :
1553-572X
Print_ISBN :
1-4244-0783-4
Type :
conf
DOI :
10.1109/IECON.2007.4460231
Filename :
4460231
Link To Document :
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