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366             Renewable Energy Devices and Systems with Simulations in MATLAB  and ANSYS ®
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                                Grid                                Load




                              Gas engine                           Battery




                              PV panel                             Fuel cell
                                                                   H 2
                                                                  O
                                                                   2

            FIGURE 14.9  Grid normal mode of Super UPS.



              Grid                           Load     Grid                          Load



            Gas engine                      Battery  Gas engine                     Battery



             PV panel                       Fuel cell  PV panel                    Fuel cell
                                            H                                       H 2
                                            O  2                                   O 2
                                             2
            (a)                                     (b)
              Grid                            Load    Grid                            Load


            Gas engine                       Battery  Gas engine                     Battery



             PV panel                       Fuel cell  PV panel                      Fuel cell
                                             H 2                                     H 2
                                            O 2                                      O 2
            (c)                                     (d)

              Grid                            Load    Grid                            Load


            Gas engine                       Battery  Gas engine                     Battery



             PV panel                                PV panel
                                            Fuel cell                               Fuel cell
                                             H                                       H
                                             O 2 2                                  O 2 2
            (e)                                     (f)

            FIGURE 14.10  Power flows of grid normal mode.
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