Page 308 - Power Electronics Handbook
P. 308

298   D.C. link frequency changers






































                          (b)            Three phase load

                        Figure 13.13 Parallel capacitor commutation in a bridge inverter: (a) single-phase; (b)
                        three-phase













                             I     I             1          I         I


                                     THE
                                      I        *         t         $


                        Flgue 13.14 Use of an external commutation voltage source in a parallel capacitor
                        commutated bridge inverter
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