A power conversion system , comprising: a DC circuit comprising first and second DC current paths; an inverter comprising a multi-phase AC connection having a plurality of AC terminals for supplying AC electrical power, and a switching network comprising a plurality of switching devices (S7-S12) individually coupled between one of the DC current paths and one of the AC terminals , the switching devices (S7-S12) individually operable to selectively electrically couple the corresponding DC current path with the corresponding AC terminal according to a corresponding switching control signal ; and a switch control system operative to provide the switching control signals by pulse width modulation at least partially according to feedback signals or values φ representing AC phase outputs and according to the position of a reference vector in a space vector modulation diagram having a plurality of stationary active space vectors around the periphery of the diagram and two stationary zero vectors at an origin of the diagram , the vectors representing unique switching states for the switching network and defining a plurality of triangular sectors positioned around the origin, the sectors each being defined by a unique set of two active vectors and the zero vectors at the corners of the corresponding triangular sector, the switch control system providing the switching control signals according to a switching sequence corresponding to the diagram sector in which the reference vector is currently located, the switch control system comprising a common mode reduction component operative in each pulse width modulation period T PWM to determine max, mid, and min ones of the feedback signals or values φ, and to selectively adjust one or more feedback signals or values φ higher or lower to provide common mode compensated feedback signals or values φ' having minimum differences therebetween based at least partially on a common mode dwell time T dwell_CM . a DC circuit comprising first and second DC current paths; an inverter comprising a multi-phase AC connection having a plurality of AC terminals for supplying AC electrical power, and a switching network comprising a plurality of switching devices (S7-S12) individually coupled between one of the DC current paths and one of the AC terminals , the switching devices (S7-S12) individually operable to selectively electrically couple the corresponding DC current path with the corresponding AC terminal according to a corresponding switching control signal ; and a switch control system operative to provide the switching control signals by pulse width modulation at least partially according to feedback signals or values φ representing AC phase outputs and according to the position of a reference vector in a space vector modulation diagram having a plurality of stationary active space vectors around the periphery of the diagram and two stationary zero vectors at an origin of the diagram , the vectors representing unique switching states for the switching network and defining a plurality of triangular sectors positioned around the origin, the sectors each being defined by a unique set of two active vectors and the zero vectors at the corners of the corresponding triangular sector, the switch control system providing the switching control signals according to a switching sequence corresponding to the diagram sector in which the reference vector is currently located, the switch control system comprising a common mode reduction component operative in each pulse width modulation period T PWM to determine max, mid, and min ones of the feedback signals or values φ, and to selectively adjust one or more feedback signals or values φ higher or lower to provide common mode compensated feedback signals or values φ' having minimum differences therebetween based at least partially on a common mode dwell time T dwell_CM . <EOS>