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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?

Mumbai University > Electronics Engineering > Sem7 > Power Electronics 2

Marks: 10M

Year: May14, Dec13, May12, May11

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1) In this type of control the stator voltage E1 and stator frequency f1 both are changed to vary the speed of the induction motor.

2) The ratio (E1/f1) is kept constant under all operating condition. Therefore it has an advantage from the stator voltage control …

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