Page 191 - Power Electronic Control in Electrical Systems
P. 191

//SYS21/F:/PEC/REVISES_10-11-01/075065126-CH006.3D ± 179 ± [177±262/86] 17.11.2001 10:22AM







                                                            Power electronic control in electrical systems 179




















                      Fig. 6.1 Basic thyristor-controlled reactor.














































                      Fig. 6.2 Voltage and line current waveforms of a basic single-phase TCR for various firing angles.





                      (a) a ˆ 90 , s ˆ 180 ; (b) a ˆ 100 , s ˆ 160 ; (c) a ˆ 130 , s ˆ 100 ; (d) a ˆ 150 , s ˆ 60 .
   186   187   188   189   190   191   192   193   194   195   196