Research on Photovoltaic Grid-Connected Control Strategy Based on Active Disturbance Rejection of Adaptive Extended State Observer

<table class="table-group" id="tab4"><tr><td><table class="table"><tr><td class="thead-hr" colspan="3"><hr/></td></tr><tr class="thead"><td class="align_left">Controllers</td><td class="align_center">Fundamental (50 Hz)</td><td class="align_center">THD (total harmonic distortion) (%)</td></tr><tr><td class="thead-hr" colspan="3"><hr/></td></tr><tr><td class="align_left">Improved ADRC</td><td class="align_center">2.237</td><td class="align_center">1.68</td></tr><tr><td class="align_left">LADRC</td><td class="align_center">2.236</td><td class="align_center">1.74</td></tr><tr><td class="align_left">PI</td><td class="align_center">2.358</td><td class="align_center">9.33</td></tr><tr class="table-tr"><td colspan="3"><hr class="tbody-hr"/></td></tr></table></td></tr></table>

<div>Harmonic analysis comparison of phase A current.</div>

Advances in Civil Engineering

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Table 4

Table 4: Research on Photovoltaic Grid-Connected Control Strategy Based on Active Disturbance Rejection of Adaptive Extended State Observer 