Discrete-Time Nonlinear Control of VSC-HVDC System

<table class="figure-group"><tr class="fig-image" id="a"><td><object data="https://static.hindawi.com/articles/mpe/volume-2015/929467/figures/929467.fig.004a.svgz" name="929467.fig.004a" type="image/svg+xml"></object></td></tr><tr class="fig-caption"><td><b>(a) </b>The active and reactive power at rectifier side</td></tr><tr class="fig-image" id="b"><td><object data="https://static.hindawi.com/articles/mpe/volume-2015/929467/figures/929467.fig.004b.svgz" name="929467.fig.004b" type="image/svg+xml"></object></td></tr><tr class="fig-caption"><td><b>(b) </b>The active and reactive power at inverter side</td></tr><tr class="fig-image" id="c"><td><object data="https://static.hindawi.com/articles/mpe/volume-2015/929467/figures/929467.fig.004c.svgz" name="929467.fig.004c" type="image/svg+xml"></object></td></tr><tr class="fig-caption"><td><b>(c) </b>The DC voltage</td></tr></table>

<div>Responses of the rectifier and inverter in steady state operation.</div>

Mathematical Problems in Engineering

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Figure 4

Figure 4: Discrete-Time Nonlinear Control of VSC-HVDC System 