Power system architecture with reduced common mode voltage

A method to provide three phase power to equipment with reduced common mode voltage on a DC bus of a three phase inverter, the method comprising:

• connecting a three-phase to ten-phase step-up transformer to ten sets of diode pairs with each set of diode pairs having a first end, a second end, and an inner connection connecting diodes of the set of diode pairs to each other, the three-phase to ten-phase step-up transformer comprising:
• a plurality of primary winding groupings, each primary winding grouping including a plurality of sub-primary windings coupled in series with a junction of two sub primary windings defining an interior junction, wherein each end of a primary winding grouping is connected to an end of another primary winding grouping to form a delta configuration and a junction of two primary winding groupings defines an input phase connection that receives a phase of a multi-phase input voltage;
• a plurality of secondary windings, each secondary winding having a first end and a second end with a first end coupled to one of the plurality of sub-primary windings and a second end coupled to one of a plurality of third windings or one of ten output connections of the three-phase to ten-phase step-up transformer;
• the plurality of the third windings each having a first end and a second end, wherein the first end of a third winding is coupled to a second end of one of the plurality of secondary windings and the second end is coupled to one of the ten output connections of the three-phase to ten-phase step-up transformer,
• wherein each of the plurality of secondary windings and the plurality of third windings are configured such that an output voltage at each of the output connections is higher than an input voltage applied to the input phase connection;
• for each output connection of the ten outputs of the three-phase to ten-phase step-up transformer, connecting the output connection to an inner connection of one of the ten sets of diode pairs;
• connecting each first end of the ten sets of diode pairs to each other and to switches of the three phase inverter;
• and
• connecting each second end of the ten sets of diode pairs to each other and to other switches of the three phase inverter, wherein the ten sets of diode pairs operatively rectify the output voltage from the three-phase to ten-phase step-up transformer to form a DC voltage on a DC bus with a reduced common mode voltage.