Hi,
I have posted this under the heading "electric motors" because I believe it is the closest topic I can find on this forum.
The problem I have is this:
I have a tri-phase AC generator,(6 KVA) with a busted AVR.
These AVR's cost a lot of $, and are very good at going "belly up", so I believe I should use a different approach to the field coil regulation.
I have mechanically added a 12 V car alternator to try and solve the problem, but the no-load - load difference is too big, and the voltage of said
car alternator is too low (in spite of the manual of the AC gen telling me it was 12 V)
So, I need to sense the voltage coming out of the generator constantly and crank-up or crank down the field coil voltage accordingly.
In the commercial version, this is done on one phase only,(with a dodgy triac circuit) hence the fact that one can't load these generators asymmetrically.
For now a similar solution would do.
I can either take the supply for the field coil from the generator directly (preferred) or from a separate field coil generator.
Understanding that this panel will/can't or shouldn't supply me with a "here-copy-this-solution" I would very much appreciate your
advise and insights in this problem.
The original AVR was covered in a black kit, that can't be removed, so there was no way I could study the design.
The Net provided some insights but it seems that proper diagrams of the AVR's are a "closely guarded secret"!
So, if you have a diagram of such a devise, even if it would only be suitable for a certain brand or type or mono phase AC generator
or any other wisdom regarding this circuit, I would very much appreciate your input.
many thanks!
Paddy
I have posted this under the heading "electric motors" because I believe it is the closest topic I can find on this forum.
The problem I have is this:
I have a tri-phase AC generator,(6 KVA) with a busted AVR.
These AVR's cost a lot of $, and are very good at going "belly up", so I believe I should use a different approach to the field coil regulation.
I have mechanically added a 12 V car alternator to try and solve the problem, but the no-load - load difference is too big, and the voltage of said
car alternator is too low (in spite of the manual of the AC gen telling me it was 12 V)
So, I need to sense the voltage coming out of the generator constantly and crank-up or crank down the field coil voltage accordingly.
In the commercial version, this is done on one phase only,(with a dodgy triac circuit) hence the fact that one can't load these generators asymmetrically.
For now a similar solution would do.
I can either take the supply for the field coil from the generator directly (preferred) or from a separate field coil generator.
Understanding that this panel will/can't or shouldn't supply me with a "here-copy-this-solution" I would very much appreciate your
advise and insights in this problem.
The original AVR was covered in a black kit, that can't be removed, so there was no way I could study the design.
The Net provided some insights but it seems that proper diagrams of the AVR's are a "closely guarded secret"!
So, if you have a diagram of such a devise, even if it would only be suitable for a certain brand or type or mono phase AC generator
or any other wisdom regarding this circuit, I would very much appreciate your input.
many thanks!
Paddy