I can not understant two points about magnetization current in induction motors.
1-It is said magnetization current is almost constant in induction motors. I can understand that if we run motor in v/f scalar mode or directly by contactor. But if we use vector control , as you know v/f ratio changes according to need. So According to my understanding, magnetization current also should change when we are running in vector control mode. What do you think about it ? (Do not consider field weakining point, My question is for any point under field weakining)
2- I have a 1PH8 motor that I used in a project. In manual of motor it says magnetization current 215A but when I calculate magnetization current from motor nameplate (Motor rated current = 460A and P.F = 0.85), I found about 240 A. What is the reason of this difference ? They should not be the same ?
Thanks in advance.
1-It is said magnetization current is almost constant in induction motors. I can understand that if we run motor in v/f scalar mode or directly by contactor. But if we use vector control , as you know v/f ratio changes according to need. So According to my understanding, magnetization current also should change when we are running in vector control mode. What do you think about it ? (Do not consider field weakining point, My question is for any point under field weakining)
2- I have a 1PH8 motor that I used in a project. In manual of motor it says magnetization current 215A but when I calculate magnetization current from motor nameplate (Motor rated current = 460A and P.F = 0.85), I found about 240 A. What is the reason of this difference ? They should not be the same ?
Thanks in advance.