Page 273 - Rashid, Power Electronics Handbook
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262                                                                                           J. Espinoza








































                                          FIGURE 14.54  Multistage converter based on a multicell arrangement.





































               FIGURE 14.55  Multicell topology. Cell voltages in phase a using a unipolar SPWM (m f ¼ 6, m a ¼ 0:8): (a) Modulating and carrier signals; (b) cell
               c 11 ac output voltage; (c) cell c 21 ac output voltage; (d) cell c 31 ac output voltage; (e) phase a load voltage. (f) phase a load-voltage spectrum.
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