An Improved Phase-Locked-Loop Control with Alternative Damping Factors for VSC Connected to Weak AC System

<table class="figure-group"><tr class="fig-image" id="a"><td><object data="https://static.hindawi.com/articles/jcse/volume-2016/9537342/figures/9537342.fig.0013a.svgz" name="9537342.fig.0013a" type="image/svg+xml"></object></td></tr><tr class="fig-caption"><td><b>(a) </b>Rectifying operation</td></tr><tr class="fig-image" id="b"><td><object data="https://static.hindawi.com/articles/jcse/volume-2016/9537342/figures/9537342.fig.0013b.svgz" name="9537342.fig.0013b" type="image/svg+xml"></object></td></tr><tr class="fig-caption"><td><b>(b) </b>Inverting operation</td></tr></table>

<div>The power transfer limitations with the advanced PLL control.</div>

Journal of Control Science and Engineering

fig13

Figure 13

Figure 13: An Improved Phase-Locked-Loop Control with Alternative Damping Factors for VSC Connected to Weak AC System 