Page 158 - Modern Control of DC-Based Power Systems
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122                                 Modern Control of DC-Based Power Systems























          Figure 5.4 Current LSF cascaded   Ideal CPL   Step 10.3 - 17.8 MW.























          Figure 5.5 ISPS V bus LSF for ideal CPL   Step 30.9 - 53.4 MW.


          been performed at t 5 0.25 s. The coefficients of the droop controllers
          were chosen to obtain an even current sharing among the converters. All
          converters equally share the total load power between them.
             The effect of the increasing and decreasing of the CPL load on the
          load voltage is described in Fig. 5.5, demonstrating that the voltage
          remains stable and reaches the voltage set-points that are gradually modi-
          fied by the action of the droop control. In Fig. 5.6 one can observe the
          transient for the current.
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