You are correct, of course. My circuit shorts the diodes. Glad I didn't built it.@crutschow
Did you check the current in D1 ,D3, D5? Don't they short their related AC sources on their respective negative half cycles?
Joe Jester gave a working implementation in post #8.
Joe Jester simulated a three phase half-wave rectifier that does not deal with the issue of this topic.Joe Jester gave a working implementation in post #8.
When you think about it, the load time constant is a distractor in the scheme of things.Also, on reflection, I'm not sure why the load time constant indicated in the OP's question has any significant bearing on the the mean value of the rectified output.
In the first post of this topic 3x230V means 3 x 230Vrms voltage line (that I think you've missed!). Let's go back to some theory: a three-phase circuit (star connection) dependence of line voltage and phase voltage is given by: Voltage_line = SQRT(3) * Voltage_phase. I hope that you agree with that! For example, a three-phase transformer with the secondary star connection can be a good practical example of simulation done by me a few posts ago.In three phase rectifier with resistive-inductive load (time constant of a low τ = L/R >> 20 ms), supply directly from a grid 3x230 V, mean voltage measured at the resistance of the load is approximately equal: