What is the working principle of VFD

Answer Posted / pushpendra kumar

Variable frquency Drive, principle of the same is by
regulating the frequency, we can regulate the speed of
drive

Example - n=120f/p

Where,

n - speed
f - frequency
p - nos of poles

By the equation we can calculate the all parametes shown
above.

Is This Answer Correct ?    57 Yes 6 No



Post New Answer       View All Answers


Please Help Members By Posting Answers For Below Questions

While HT line put on to activate ACB in low tention panel VCB tripping instantly.why it happens

1595


What are marginally stable systems?

675


A double circuit with dog conductor 66KV Transmission line from wind farm evacuation to feeding substation having capacity of 25MW for transmission. Can same transmission network be considered for further expansion of Power & how much in MW. If we need to expand next 10-15 MW more will there any augmentation is required in transmission network? Kindly reply asap.

1685


What is the rating of a circuit breaker needed for 300 kv load in 33KV supply line of 33/415 transformer ? Whether 800/1200 amp vaccum circuit breaker can perform for a 33 KV line in input in 415 volt in output of the transformer ?

1257


what is meant by 3rd hormonics ?

1408






Explain Continuous and Discrete signals?

1301


what is the affect of earth's magnetic field on the frequency used in aircraft???

1547


1. If 8.35%Z means the percentage impedance of 132kV-line from power company, we will like to reconfirm its base capacity.

1549


I am applying for NTPC examination.Can we please provide previous paper to my mail prasad.chintala108340@gmail.com

1743


what is dc mator?types of dc motor?losses in dc motor?what is the mechanical,electrical and commercial efficiency of a dc motor?

1543


What is value of earth resistance required for substation and equipment earthing and what are the reference guidelines

1280


How grounding is different than earthings?

723


Can you any one explain application of buccholz relay operation and pressure relif device operation of power transformer

1447


what is the circulate the diesel in DG in side pls tell parts name and picture with circulate the diesel

1536


I am getting above 60 V as open delta voltage against single phase unit ICT at tertiary delta formed and ICT getting trippped on NDR. ICT tested and found in order. PTs provided on tertiary are tested and in order. what may be the reason?

1421