Three-phase diode bridge rectifiers can handle higher power levels when compared with single-phase diode bridge rectifiers. They have higher quality in the waveforms of DC side voltage and AC side currents. Three-phase diode bridge rectifiers are appropriate for industrial applications, where higher power levels are to be handled by the rectifier.
Fig. 7-15 shows the circuit diagram of a three-phase diode bridge rectifier with resistive load.
The average value of the output voltage, , can be found as:
where is the RMS value of the line-to-line voltage of the AC source.