What are the two most common speed control methods used by the variable frequency drive? 1. 2.
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Step 1: The two most common speed control methods used by the variable frequency drive are **Voltage Control** and **Frequency Control**. Show more…
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a). normally, the constraint for lower speed operation of standard self cooled induction motors driven by a VSD is-----. b). this problem can be overcome using ----
Anand J.
Short Answer 1. Explain why it is preferable to maintain the voltage-to-frequency ratio constant in a three-phase variable-frequency induction motor drive. 2. At which value is the V/f ratio generally set? 3. Describe what happens to the ability of an induction motor to produce torque when the motor operates above and below the knee of the saturation curve. 4. Explain why the torque produced at low PWM inverter frequencies by large induction motors is less affected than that produced by small induction motors. 5. Explain why the switching frequency of the PWM inverter in high-power, variable-frequency induction motor drives is usually much lower than that in low-power, variable-frequency induction motor drives.
Supreeta N.
a) Normally, the constraint for lower speed operation of standard self-cooled induction motors driven by a VSD is ____ b) This problem can be overcome by using ____
Sri K.
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