Failure Diagnosis for Demagnetization in Interior Permanent Magnet Synchronous Motors

<table class="figure-group"><tr class="fig-image" id="a"><td><object data="https://static.hindawi.com/articles/ijrm/volume-2017/2716814/figures/2716814.fig.0012a.svgz" name="2716814.fig.0012a" type="image/svg+xml"></object></td></tr><tr class="fig-caption"><td><b>(a) </b>Healthy</td></tr><tr class="fig-image" id="b"><td><object data="https://static.hindawi.com/articles/ijrm/volume-2017/2716814/figures/2716814.fig.0012b.svgz" name="2716814.fig.0012b" type="image/svg+xml"></object></td></tr><tr class="fig-caption"><td><b>(b) </b>Radial demagnetization</td></tr><tr class="fig-image" id="c"><td><object data="https://static.hindawi.com/articles/ijrm/volume-2017/2716814/figures/2716814.fig.0012c.svgz" name="2716814.fig.0012c" type="image/svg+xml"></object></td></tr><tr class="fig-caption"><td><b>(c) </b>Axial demagnetization</td></tr></table>

<div>Fourier analysis of the magnetic flux density at the stator teeth tip.</div>

International Journal of Rotating Machinery

fig12

Figure 12

Figure 12: Failure Diagnosis for Demagnetization in Interior Permanent Magnet Synchronous Motors 