The search for an alternate and an efficient source to that of the conventional source is on the rising note. Saving energy by means of various control strategies have been proposed to solve this problem out of which we have chosen an integral cycle controller which varies the intensity of fluorescent lamp of a building. The control strategy is such that the level of surrounding light increases the supply voltage, hence electric power consumption, to the electric lighting system is reduced. Similarly, when the surrounding sunlight decreases the supply voltage, the electric power consumption to the electric lighting system is increased. The controller has been applied and verified using LABVIEW. The implementation of integral cycle control strategy could save up to 5.30% of electricity.
