A Novel Integrated PWM Lighting System

Author

Wang, Hung-Yu ; Lai, Yu-Hsuan ; Wu, Jhong-Jhou ; Lin, Yang-Chiuan

Author_Institution

Electron. Eng., KUAS, Kaohsiung, Taiwan

fYear

2010

fDate

25-27 June 2010

Firstpage

2556

Lastpage

2559

Abstract

Because of the crisis of global energy resources and global warming, many nations and enterprises are enthusiastic at developing the integrated scheme about making good use of renewable energy. In this paper a power-saving lighting system supplied with solar cell is proposed. The solar cell is used for electrical energy supplement and the generated energy is stored in power storage unit. The power storage unit is charged by pulse-width modulation (PWM) method. Through the PWM signal controlled by microcontroller, regulator and capacitance array, it balances and cushions the voltage between the solar cell and the power storage unit. It is helpful to the life-time extension of power storage unit. The LED array is used in the lighting system. The lighting system can detect the environmental brightness and control the brightness of LED array by PWM signal from the microcontroller. The experimental result is presented that confirm the power-saving prediction.

Keywords

LED lamps; lighting; microcontrollers; renewable energy sources; solar cells; LED array; capacitance array; electrical energy supplement; enterprises; global energy resources; global warming; integrated PWM lighting system; microcontroller array; power storage unit; power-saving lighting system; pulse-width modulation method; regulator array; renewable energy; solar cell; Brightness; Light emitting diodes; Lighting; Photovoltaic cells; Power supplies; Pulse width modulation; Voltage control; Green energy; LED ligiting; PWM control; Solar cell;

fLanguage

English

Publisher

ieee

Conference_Titel

Electrical and Control Engineering (ICECE), 2010 International Conference on

Conference_Location

Wuhan

Print_ISBN

978-1-4244-6880-5

Type

conf

DOI

10.1109/iCECE.2010.631

Filename

5630722