Answer / g senthilkumaran

Scalar drive means only V/F control over the motor
torque can control by V/F mode

Vector control drives use a mathematical model of the motor
to dynamically determine the values of the essential
operating and control parameters. They are called "vector
control" drives because this analysis is based on a vector
representation of current, voltage and magnetic flux.

Vector drives continuously monitor and analyze the motor
current to determine what voltage to apply at any given
frequency to produce the optimum magnetizing current.

Vector drives provide excellent performance in terms of
accurate static and dynamic speed regulation and rapid
response to sudden changes in load torque

what happen when dc supply is given to the transformer

9 Answers   Bhel,

---

what are the various parts of airconditioning system used in train and its working

1 Answers  

---

Basic motor transformer generator

0 Answers   eCentric Solutions,

---

What is sink and source?

0 Answers  

---

what is the transformer efficiency?

5 Answers  

---

---

Dear sir, my knowledge about cable size determination is limited. Though I read examples I could not calculate the Cable size required for electric driven pump 40 KW, 380 Volt, 50 HZ, 50 meter from transformer and it is three phase star delta starting. Please help as there is no one in my surroundings to help.

0 Answers  

---

I have 480V Single phase and I am trying to figure how big of a transformer (KVA's) and Primary breaker size I need to provide 200 Amps at 240V for a building.

1 Answers   Wipro,

---

How to calculate the time setting for star connection in star delta starter? For example 10KW 3PH Induction motor.

0 Answers   Taj Group, Tata Steel Limited,

---

How can we decide the fualt levels of sub-stations?

2 Answers   Bhel, Enercon, Prakash Industries,

---

What are :- AC Distribution Board (Single & Double Front) DC Distribution Boards Distribution Board LT Breaker Panel.

0 Answers  

---

Why transformer neutral earthing? What is advantages?

3 Answers  

---

Describe: Energy efficient motors

1 Answers   Reliance,

---