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How long does it take for the conventional VFD (voltage and frequency-dependent) to turn off the inverter in order to start creating power?

How long does it take for the conventional VFD (voltage and frequency-dependent) to turn off the inverter in order to start creating power? Correct Answer 10 to 12 milliseconds(ms)

Variable Frequency drive:

  • A variable-frequency drive (VFD) is a type of motor drive used in electro-mechanical drive systems to control AC motor speed and torque by varying motor input frequency in order to control the associated voltage or current variation.

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  • VFD takes 10 to 12 ms in turning off the inverter in order to start creating power.
  • The VFD consists of three distinct sub-systems: a rectifier bridge converter, a direct current (DC) link, and an inverter.
  • The rectifier in a VFD is used to convert incoming ac power into direct current (DC) power.
  • The DC link consists of a capacitor that smooths out the converter's DC output ripple and provides a stiff input to the inverter. 
  • The inverter turns DC (Direct Current) to AC (Alternating Current). This AC output is used to control the voltage and frequency of the induction motor.

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