A Rotor Flux and Speed Observer for Sensorless Single-Phase Induction Motor Applications

<table>Rotor speed <svg height="12.0625" id="M121" style="vertical-align:-3.39066pt" version="1.1" viewbox="0 0 16.612499 12.0625" width="16.612499" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink">
<g transform="matrix(.017,-0,0,-.017,.062,7.775)"><use xlink:href="#x1D714"></use></g>
<g transform="matrix(.012,-0,0,-.012,10.912,11.863)"><use xlink:href="#x1D45F"></use></g>
</svg> and its estimations <svg height="15.75" id="M122" style="vertical-align:-3.39066pt" version="1.1" viewbox="0 0 23.375 15.75" width="23.375" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink">
<g transform="matrix(.017,-0,0,-.017,1.487,11.387)"><use xlink:href="#xF5C01"></use></g><g transform="matrix(.017,-0,0,-.017,.062,11.462)"><use xlink:href="#x1D714"></use></g>
<g transform="matrix(.012,-0,0,-.012,10.912,15.55)"><use xlink:href="#x1D45F"></use></g><g transform="matrix(.012,-0,0,-.012,15.934,15.55)"><use xlink:href="#x1D6FC"></use></g>
</svg> and <svg height="18.7125" id="M123" style="vertical-align:-5.76984pt" version="1.1" viewbox="0 0 23.525 18.7125" width="23.525" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink">
<g transform="matrix(.017,-0,0,-.017,1.487,11.388)"><use xlink:href="#xF5C01"></use></g><g transform="matrix(.017,-0,0,-.017,.062,11.462)"><use xlink:href="#x1D714"></use></g>
<g transform="matrix(.012,-0,0,-.012,10.912,15.55)"><use xlink:href="#x1D45F"></use></g><g transform="matrix(.012,-0,0,-.012,15.934,15.55)"><use xlink:href="#x1D6FD"></use></g>
</svg> for 50 Hz during the application of a load step (computational simulation).</table>

International Journal of Rotating Machinery

fig10

Figure 10

Figure 10: A Rotor Flux and Speed Observer for Sensorless Single-Phase Induction Motor Applications 