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Control Approaches for Parallel Source Converter Systems 175
Figure 5.44 Current virtual distribution BS cascaded Ideal CPL Step 10.3 -
17.8 MW.
Figure 5.45 ISPS V bus virtual distribution BS for ideal CPL Step 30.9 - 53.4 MW.
5.6 ADAPTIVE BACKSTEPPING CONTROL
In the following subsections the reader is introduced into the the-
ory behind Adaptive Backstepping [51]. This adaptive formulation of the
Backstepping procedure allows a decoupling of the ISPS, and enables a
decentralized control scheme which is no longer dependent on the virtual
current source/virtual disturbance approach used in Sections 5.4 and 5.5.
Instead of estimating a current source, now the power demand of the
nonlocal network is estimated. Therefore, the estimation process is now
