General information about AC/DC converters can be found at the AC/DC converter concept
This is a 2*m pulse thyristor rectifier bridge. In order to operate this rectifier a voltage source with center tap is required. It is important to note that for polyphase circuits with phase even phase numbers greater than three the MultiStarResistance shall be used for grounding the voltage sources. See example Examples.ACDC.RectifierBridge2mPulse.