Hi ,
I am using Thyristors for capacitor switching and have a question
Which switching is better for both capacitor and thyristor? All three phases or two phases only.
What is benefit and loss between them.
Regards,
Deep

Which Is Better- Three Phase Switching Or Two Phase Switching
Started by deep, Mar 19 2010 12:03 PM
2 replies to this topic
#1
Posted 19 March 2010 - 12:03 PM
#2
Posted 22 March 2010 - 03:21 PM
QUOTE (deep @ Mar 19 2010, 01:03 PM) <{POST_SNAPBACK}>
Hi ,
I am using Thyristors for capacitor switching and have a question
Which switching is better for both capacitor and thyristor? All three phases or two phases only.
What is benefit and loss between them.
Regards,
Deep
I am using Thyristors for capacitor switching and have a question
Which switching is better for both capacitor and thyristor? All three phases or two phases only.
What is benefit and loss between them.
Regards,
Deep
In short:
2 switches - less initial cost, less losses, capacitors always has voltage (longer discharge time after shutdown).
3 swtiches - allows unbalanced control (if the load is not equal on all phases)
To summarize, if the load is balanced, 2 switches is better.
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#3
Posted 03 April 2010 - 11:58 PM
Two switches is technically easier and lower cost.
The major disadvantage is that one phase is always connected to the capacitors which can be a problem if there is leakage to ground.
Two phase control also has lower power dissipation.
Best regards,
The major disadvantage is that one phase is always connected to the capacitors which can be a problem if there is leakage to ground.
Two phase control also has lower power dissipation.
Best regards,
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