Abstract
Abstract
Good regulation and stability are important factors to be considered in
designing of the uninterruptible power supplies systems, which depend on the load
requirements. On the other side, the cost factor roles the proper design selection of
the uninterruptible power supply, especially for the commercial applications. A pulse
width modulation uninterruptible power supplies are considered to have good
features over the rival one.
This paper presents a suggested method for the controlling of the
uninterruptible power supplies to regulate the output voltage, by using an easy
practicable, low cost, and one-sensor, microprocessor-based regulator. This
regulator circuit depends on minimizing the hardware complicity with efficient
software. The practical results show that a good and reliable regulation performance
in the applications when the fluctuation in both input DC voltage and load occurred,
such as the applications using the solar cells or batteries as the input voltage source
supplying variable load conditions.
2004/12/ 2004
