
277Electric Machine and Electric Drive Simulation
5.3.4 CyCloConverter siMulation
It has been said in Chapter 4 already that for converting the AC voltage of the con-
stant amplitude and frequency into the AC voltage of the changing amplitude and
frequency, together with VSI, the systems of the direct, without DC link, converting
are used. The matrix converters whose modeling was considered in Section 4.11
are the new trend in power electronics. At the same time, the direct converters with
thyristors (cycloconverters) have been in use since long ago [5]. The main circuits
are shown in Figure 5.100. Cycloconverter consists of three pairs of thyristor ...