Page 346 - Power Electronics Handbook
P. 346

336   D.C. link  frequency changers














                                                                 +
                            Figwe 13.48 Basic thyristor bridge inverter without commutation components


                                                     Load voltage

                            0- A
                                                     Load current

                                                     Thryistor TH,  -1
                             0 A                                                   r-
                                                                                       O
                            0 -u
                                                     Thyristor THz  A-1




                                                     Thyristor TH3   -0












                                                       Diode 02   -0
                                                       Diode 03  I
                                                                                   L
                                                                                      O





                                                    Supply current
                                  Device currents                    Device voltages
                                                                              -
                            Figore 13.49 Circuit waveforms for the inverter of Figure 13.48
   341   342   343   344   345   346   347   348   349   350   351