Design of Nonlinear Robust Rotor Current Controller for DFIG Based on Terminal Sliding Mode Control and Extended State Observer

<table class="table-group" id="tab5"><tr><td><table class="table"><tr><td class="thead-hr" colspan="3"><hr/></td></tr><tr class="thead"><td align="left">Parameters</td><td align="center">PI</td><td align="center">The proposed approach</td></tr><tr><td class="thead-hr" colspan="3"><hr/></td></tr><tr><td align="left"><span style="width: 17.012501px;"><svg height="15.475" id="M167" style="vertical-align:-3.39066pt" version="1.1" viewbox="0 0 17.012501 15.475" width="17.012501" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink">
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<g transform="matrix(.012,-0,0,-.012,4.7,15.275)"><path d="M530 686q-79 -330 -126 -595q-5 -24 4 -24q22 0 77 53l16 -24q-42 -49 -88 -78.5t-72 -29.5q-37 0 -19 83l21 99h-2q-62 -83 -153 -141q-65 -41 -97 -41q-28 0 -48 31.5t-20 91.5q0 71 32.5 144t88.5 118q36 30 94 52.5t94 22.5q38 0 68 -13l29 158q7 40 2 47.5t-38 7.5
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</svg></span></td><td align="center">1.26</td><td align="center">1.26</td></tr><tr><td align="left"><span style="width: 16.25px;"><svg height="18.4" id="M168" style="vertical-align:-5.73163pt" version="1.1" viewbox="0 0 16.25 18.4" width="16.25" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink">
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</svg></span></td><td align="center">1.21</td><td align="center">1.21</td></tr><tr><td align="left"><span style="width: 17px;"><svg height="15.8375" id="M169" style="vertical-align:-3.39066pt" version="1.1" viewbox="0 0 17 15.8375" width="17" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink">
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<g transform="matrix(.012,-0,0,-.012,11.388,15.637)"><path d="M391 364q0 -28 -20.5 -53.5t-50 -43.5t-70 -34t-73.5 -25t-68 -17v-29q0 -48 20 -81t65 -33q73 0 157 76l16 -23q-107 -113 -221 -113q-21 0 -40.5 6.5t-39 22t-31.5 47t-12 75.5q0 69 33.5 139.5t95.5 114.5q77 55 143 55q42 0 69 -24.5t27 -59.5zM313 350
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</svg></span></td><td align="center">1.22</td><td align="center">1.22</td></tr><tr><td align="left"><span style="width: 9.2749996px;"><svg height="7.9499998" id="M170" style="vertical-align:-0.1638pt" version="1.1" viewbox="0 0 9.2749996 7.9499998" width="9.2749996" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink">
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</svg></span></td><td align="center">1.13</td><td align="center">1.14</td></tr><tr class="table-tr"><td colspan="3"><hr class="tbody-hr"/></td></tr></table></td></tr></table>

The comparison analysis of  <svg height="14.4125" id="M166" style="vertical-align:-3.39064pt" version="1.1" viewbox="0 0 28.0375 14.4125" width="28.0375" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink">
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</svg>  of Case <a href="https://static.hindawi.com/articles/mpe/volume-2014/201938/figures/#casee1">1</a> under different controller.

Mathematical Problems in Engineering

tab5

Table 5

Table 5: Design of Nonlinear Robust Rotor Current Controller for DFIG Based on Terminal Sliding Mode Control and Extended State Observer 