Page 179 - Modern Control of DC-Based Power Systems
P. 179

Control Approaches for Parallel Source Converter Systems     143























              Figure 5.19 Current I&I cascaded   Ideal CPL   Step 10.3 - 17.8 MW.
























              Figure 5.20 ISPS V bus I&I 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. 5.20, 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. 5.21 one can observe the
              transient for the current.
   174   175   176   177   178   179   180   181   182   183   184