Model-Based Fault Detection and Isolation of a Liquid-Cooled Frequency Converter on a Wind Turbine

<table>The measurement value of phase module temperature from phase module temperature sensor. The temperature sensor of phase module 2 is defected from time <svg height="13.25" id="M143" style="vertical-align:-1.95624pt" version="1.1" viewbox="0 0 35.650002 13.25" width="35.650002" xmlns="http://www.w3.org/2000/svg">
<g transform="matrix(1.25,0,0,-1.25,0,13.25)">
<g transform="translate(72,-61.4)">
<text transform="matrix(1,0,0,-1,-71.95,63.4)">
<tspan style="font-size: 12.50px; " x="0" y="0">6</tspan>
<tspan style="font-size: 12.50px; " x="6.2515001" y="0">0</tspan>
<tspan style="font-size: 12.50px; " x="14.578498" y="0">[</tspan>
<tspan style="font-size: 12.50px; " x="18.741997" y="0">𝑠</tspan>
<tspan style="font-size: 12.50px; " x="24.243317" y="0">]</tspan>
</text>
</g>
</g>
</svg>, and the fault is sensor bias fault.</table>

Journal of Control Science and Engineering

fig19

Figure 19

Figure 19: Model-Based Fault Detection and Isolation of a Liquid-Cooled Frequency Converter on a Wind Turbine 