Control Strategy of Three-Phase Photovoltaic Inverter under Low-Voltage Ride-Through Condition

<table class="figure-group"><tr class="fig-image" id="a"><td><object data="https://static.hindawi.com/articles/mpe/volume-2015/790584/figures/790584.fig.0024a.svgz" name="790584.fig.0024a" type="image/svg+xml"></object></td></tr><tr class="fig-caption"><td><b>(a) </b>Current output when grid dropped at <svg height="6.20645pt" id="M435" style="vertical-align:-0.2063999pt" version="1.1" viewbox="-0.0498162 -6.00005 5.07119 6.20645" width="5.07119pt" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink"><g transform="matrix(.013,0,0,-0.013,0,0)"><path d="M357 391C357 416 325 451 270 451C241 451 179 431 146 400C109 365 97 334 97 307C97 248 143 213 196 180C250 146 261 123 261 101C261 75 237 40 190 40C153 40 110 72 86 109C81 116 68 119 55 112C37 102 24 87 24 66C24 30 85 -12 137 -12C229 -12 331 62 331 140C331 189 304 218 236 260C197 284 164 309 164 346C164 381 194 400 220 400C259 400 282 380 304 350C310 342 321 339 330 344C347 353 357 372 357 391Z" id="g50-116"></path><glyph.data ascent="3443" descent="-2856" horiz-adv-x="381" vert-adv-y="381"></glyph.data></g></svg> single-phase</td></tr><tr class="fig-image" id="b"><td><object data="https://static.hindawi.com/articles/mpe/volume-2015/790584/figures/790584.fig.0024b.svgz" name="790584.fig.0024b" type="image/svg+xml"></object></td></tr><tr class="fig-caption"><td><b>(b) </b>Current output when grid dropped at three-phase</td></tr></table>

<div>Grid current and grid voltage.</div>

Mathematical Problems in Engineering

fig24

Figure 24

Figure 24: Control Strategy of Three-Phase Photovoltaic Inverter under Low-Voltage Ride-Through Condition 