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Batteries and Ultracapacitors for Electric Power Systems with Renewable Energy Sources   345

















                                             DC link voltage (V DC )
                500
              Voltage (V)  400
                300

                200
                  0     0.005  0.01   0.015  0.02   0.025  0.03   0.035  0.04   0.045  0.05
                                              Grid current (i-grid)
                60
              Current (A)  20 0
                40


               –20
                  0     0.005  0.01   0.015  0.02   0.025  0.03   0.035  0.04   0.045  0.05
                                              BES current (i-BES)
                100
              Current (A)  50 0




               –50
                  0     0.005  0.01   0.015  0.02   0.025  0.03   0.035  0.04   0.045  0.05
                                            EV charging current (i-EV)
                15
              Current (A)  10 5



                 0
                  0     0.005  0.01   0.015  0.02   0.025  0.03   0.035  0.04   0.045  0.05
                                                  Time (s)


            FIGURE 13.32  Simulation results for the EV charging station example, shown in Figures 13.30 and 13.31.
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