zaknabbit
Newbie level 5
Hi edaboard,
I'm trying to simulate a three phase full wave controlled rectifier with three TCA785. I have some issues with the design. I saw some rectifiers with tca785 and they use three tca785 one for each phase, but they use the voltage phase-neutral, i'm trying to do this using the voltage phase-phase, and I don't know if this is possible... Another issue is the valors of the capacitors and the resistors of the tca785...
View attachment rectificador.bmp
I'm only trying the rectification. Then i'll have to isolate the ground of the control part from the ground of the power part. The control voltage is made by a voltage divisor (V11). I really don't know how to calculate the valors of the C12, C10, R9 to limitate the phase of the trigger output voltage to 120º and to make a good ramp of charge to work fine.
Thanks.
I'm trying to simulate a three phase full wave controlled rectifier with three TCA785. I have some issues with the design. I saw some rectifiers with tca785 and they use three tca785 one for each phase, but they use the voltage phase-neutral, i'm trying to do this using the voltage phase-phase, and I don't know if this is possible... Another issue is the valors of the capacitors and the resistors of the tca785...
View attachment rectificador.bmp
I'm only trying the rectification. Then i'll have to isolate the ground of the control part from the ground of the power part. The control voltage is made by a voltage divisor (V11). I really don't know how to calculate the valors of the C12, C10, R9 to limitate the phase of the trigger output voltage to 120º and to make a good ramp of charge to work fine.
Thanks.