An Optimal Current Controller Design for a Grid Connected Inverter to Improve Power Quality and Test Commercial PV Inverters

<table class="figure-group"><tr class="fig-image" id="a"><td><object data="https://static.hindawi.com/articles/tswj/volume-2017/1393476/figures/1393476.fig.0011a.svgz" name="1393476.fig.0011a" type="image/svg+xml"></object></td></tr><tr class="fig-caption"><td><b>(a) </b>Optimal PID controller</td></tr><tr class="fig-image" id="b"><td><object data="https://static.hindawi.com/articles/tswj/volume-2017/1393476/figures/1393476.fig.0011b.svgz" name="1393476.fig.0011b" type="image/svg+xml"></object></td></tr><tr class="fig-caption"><td><b>(b) </b>Unit proportional gain</td></tr></table>

<div>FFT analysis of the output current of the grid connected inverter and its frequency spectrum as in (a) and (b).</div>

The Scientific World Journal

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Figure 11

Figure 11: An Optimal Current Controller Design for a Grid Connected Inverter to Improve Power Quality and Test Commercial PV Inverters 