Seperately excited DC machines Flashcards
(6 cards)
1
Q
what is seperately excited dc machine
A
similar to shunt but flux density BF is provided through external means
2
Q
controllable exciteation
A
seperate circuit for the flux density
3
Q
PRO and Con of controllable exciteation
A
high controllability but need for 2 power supplies
4
Q
without controllable excitation
A
uses permamnets magnets sufficient enough to provide the required BF for the machines
5
Q
pro and con of without controllable excitation
A
no additional power supply, lower bf so low V applications
6
Q
charateistics of the seperpately excited motor
A
simillar to dc shunt motor
