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Static Uninterruptible Power Supplies
                                          Static Uninterruptible Power Supplies  149


            +    + BATT

                   V1                                   V2
                          E2                                   E1





            C1
                        S1C2                                       S1C2





                          E1                                   E2

            –
                 – BATT
                      Working Principle of the IGBT Inverter Bridge




                  5 ms




                2
                  5 ms


















                  5 ms
                      Output Voltage / Inverter Bridge Current at Np

            Figure 5.8




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