what is the working of vfd drives.

Question Posted / deepak_husnale

2 Answers
7193 Views
I also Faced
E-Mail Answers

Answers were Sorted based on User's Feedback

what is the working of vfd drives...

VFD means Variable Frequency Drives.A variable-frequency
drive (VFD) is a system for controlling the rotational speed
of an alternating current (AC) electric motor by controlling
the frequency of the electrical power supplied to the motor.

thanking u
http://a2zengineering.blogspot.com/

Is This Answer Correct ?

15 Yes

1 No

what is the working of vfd drives...

Answer / rohan k trivedo

simply we can understand vfd by the below relation

N= 120f/p
so in vfd speed will be controlled with the change in
frequancy. and frequancy can be changed by the thyristor
control pannel.

Is This Answer Correct ?

14 Yes

2 No

Post New Answer

More Electrical Engineering Interview Questions

If the supply voltage is same (say 440V) whether a system designed for 60 Hz frequency will work with 50 Hz frequency or not , if so pl. give clarification.

11 Answers ABB,

State the factors, for the choice of electrical system for an aero turbine.

0 Answers

can you give me some names of projects which can be used in our daily life & which is having medium cost?

1 Answers

what is the function of Moulded case circuit breaker, why it is called Moulded?

0 Answers

why used in starter in tube ligtht circuit.

4 Answers College School Exams Tests, HP,

Grid fault level [KA]?

0 Answers

Dear sir, we are getting voltage fluctuations suddenly for 2 or 3 minutes again it becomes normal. we checked each and every connection some times we are getting 110 volts like that from earth to neutral again it is reducing we are getting supply from 45 kva DG set give earthing properly.

3 Answers Triveni,

What will be the size of cable required for 5.5 KW motor ( Full load current 10 Amps approx.), Starting current with DOL is 120 Amps. Aprrox. Short circuit current with LLLG fault is 2000 Amps Approx.

2 Answers

why is control bus bi-directional?

0 Answers

ple send to the how to improve the efficiency & economical to the thermal power plant

1 Answers

what is servo motor principle? difference between induction motor & servo motor?

1 Answers

what is relay what is protection & contact multiplying relays where it is used function in brief

0 Answers

For more Electrical Engineering Interview Questions Click Here