Will increasing the switching frequency of a variable speed drive have any effect on the current drawn by the motor..?
Any thoughts..?
Switching Frequency
Started by chaterpilar, Dec 16 2007 01:51 PM
2 replies to this topic
#2
marke
-
- Moderator
-
- 2,617 posts
Posting Freak
- Gender:Male
- Location:Christchurch, New Zealand
Posted 16 December 2007 - 05:48 PM
Hello chaterpilar
No, changing the switching speed should not significantly affect the current drawn by the motor. It will however, increase the switching losses in the drive.
There will be an increase in the capacitive current into the motor as at each switching transition, current flows to chare up the capacitance of the motor, but this is small compared to the steady state current into the motor.
Best regards,
No, changing the switching speed should not significantly affect the current drawn by the motor. It will however, increase the switching losses in the drive.
There will be an increase in the capacitive current into the motor as at each switching transition, current flows to chare up the capacitance of the motor, but this is small compared to the steady state current into the motor.
Best regards,
Mark Empson | administrator
Skype Contact = markempson | phone +64 274 363 067
LMPForum | Power Factor | L M Photonics Ltd | Empson family | Advanced Motor Control Ltd | Pressure Transducers | Smart Relay | GSM Control | Mark Empson Website | Soft Starters
#3
chaterpilar
-
- Full Member
-
- 171 posts
Member
Posted 17 December 2007 - 03:22 AM
Thanks Marke for your reply.
0 user(s) are reading this topic
0 members, 0 guests, 0 anonymous users
