What is Torque Vector Control in VVVF Drives?
Answer Posted / arun
ya the above answer is correct..v/f is directly
proportional to flux .we have to maintain the flux constant
to produce constant torque..actually vector control means
tat we have to currents Idirect axis and Iquadrature
axis..Id controls the flux of the machine.Iq controls the
torque of the machine independently.
Is This Answer Correct ? | 1 Yes | 2 No |
Post New Answer View All Answers
What the difference between three phase contactor (coil 110vac) & three phase SSR (control voltage 110Vac)? May I use contactor in place of SSR?
I want to replace the 3 KW DC motor with AC motor so what should be the rating of AC motor? Details Of DC motor to be changed with AC are - Kw - 3, Vf - 310, If - 0.15, Va - 400, Ia - 13, RPM - 2400
How to minimize the eddy current losses?
How energy is generated in hydroelectric power plant?
please anybody help me to find out the BHEL trainee Exam previous year questions papers . if u ve pls. send it to surekhared@gmail.com
what is the difference between pvc & fiber glass cables
i have a 4 Mva transformer 34.5 kv / 480-277 v and i used 2 parallel 3200 amp bus duct for the secondary feeder using 3 ply of bus bar ( 3/8" x 5" ) as a common where the flexible link terminated and 6300 amps breaker for the main, the lower bus duct reaches 70 degrees and the upper bus duct reaches 55 degrees when i used thermal scanner. why the temperature is not balance when the load reaches 3600 amps.
Can Anyone Answer anyone of these ? Q1) why direct SOLUTION of Load Flow Studies in Not Possile ? Q2)Why majority of Buses in power system are load buses Q3)Why one of the buses in Power system is taken as reference bus (slack or swing) Bus ? Q4)Bus Admittance Matrix is a sparce (means it contains some zero elements ) matrix , give reason
why fractional pitch winding generally used in alternators?
advantage and disadvantage of team work?
Is there any problem about which the drive (inverter) doesn't show/display the alarm and/or fault but instead of this , it doesn't work ? I want to know that could there be any kind of problem in the drive when the drive doesn't display the alarm and/or fault ?
Dear Brother can u tell the proper size selection of cable & the fault level calculation of braker, busbar etc. pls mail me at azeemk30@gmail.com
where we use the SFU & FSU?
Describe the control mechanism of missile launcher???
How many Zones can be in Conventional type fire alarm system & how can we detect the fire in Conv. type FAS?