Posted by Circuits Arena on Sunday, 30 November 2014
DC Chopper Circuit Using Thyristors-SCRs is the artlcle explaining SCRs Chopper Circuit DC-DC Converter 1) This circuits made by two series SCRs are unlikely switching devices for this chopper circuits ...
SCRs Chopper Circuit DC-DC Converter
1) This circuits made by two series SCRs are unlikely switching
devices for this chopper circuits DC to DC converter.
2) It has an intermediate
resonant link that facilitates self-commutation of each of the SCRs Thyristors.
3) SCRs of both input and output currents are discontinuous thus requiring
appropriately sized low impedance capacitors.
4) Switching frequency is
two orders of magnitude higher than the line frequency so relatively
small L-C components may be used.
5) It is applied much like the standard
buck regulator to reduce voltage by Thyristors.
6) This discussion covers the operation
and feasibility of this topology rather than a practical circuit –an
evaluation circuit is provided.
7) Practical thyristor circuits will be the subject
of future discussions. Note that this topology appears to be new to the
world and may possibly spark a revived interest in SCRs.
