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Draw and explain the variable voltage and variable frequency control method for 3phase squirrel cage induction motor. What is the significance of (v/f) ratio control?
written 7.9 years ago by gravatar for teamques10 teamques10 ★ 65k modified 2.3 years ago by gravatar for pedsangini276 pedsangini276 • 4.8k

Mumbai University > Electronics Engineering > Sem7 > Power Electronics 2

Marks: 10M

Year: May14, Dec13, May12, May11
power electronics
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written 7.9 years ago by gravatar for teamques10 teamques10 ★ 65k

1) In this type of control the stator voltage $E_1$ and stator frequency $f_1$ both are changed to vary the speed of the induction motor.

2) The ratio $( E_1 / f_1 )$ is kept constant under all operating condition. Therefore it has an advantage from the stator voltage control …

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