395AC–DC–AC Converters
an ac electrical machine coupled to a dc machine connecting to a battery to
convert the ac into dc and vice versa. Draw such an electromechanical UPS
schematic incorporating the ac bus and the user loads. Today, the electrical
machines have been replaced by bidirectional power electronics converters.
Discuss the pros and cons of using the electrical machines versus power
electronics in UPS.
FURTHER READING
Ahmed, A. 1999. Power Electronics for Technology. Upper Saddle River: Prentice Hall.
Ang, S. and Oliva, A. 2010. Power Switching Converters. Boca Raton: CRC Press/Taylor &
Francis.
Bose, B. 1996. Power Electronics and Variable Frequency Drives. New York: IEEE Press.
Hart, D. 2011. Power Electronics. New York: McGraw Hill. ...