
16-1
16.1 Introduction
AC–DC–AC converters are part of a group of AC/AC converters. Generally, AC/AC converters take
power from one AC system and deliver it to another with waveforms of dierent amplitude, frequency,
and phase. ose systems can be single phase or three phase. e major application of voltage source AC/
AC converters are adjustable speed drives (ASDs) [5,18,19,41] and adjustable speed generators (ASGs)
(variable speed generation systems).
e widely voltage source AC/AC converters utilize a DC-link between the two AC systems, as pre-
sented in Figure 16.1a,b, and provide direct power conversion, as in Figure 16.1c.
16
Fundamentals