Power conversion system with common mode filter

A method of providing a power conversion system, wherein the method comprises

• providing a first power conversion module configured to convert electrical power between a first side and a second side of the first power conversion module,
• providing a second, different, power conversion module configured to convert electrical power between a first side and a second side of the second power conversion module,
• wherein each power conversion module comprises at least a first terminal and a second terminal on the first side, wherein each power conversion module is configured to be coupled to a different power source on its first side by its first and second terminals, and wherein the second side of each power conversion module is coupled to a common electrical bus, and
• providing a common mode filter configured to filter common mode currents circulating between the first power conversion module and the second power conversion module via the common electrical bus wherein the common mode filter comprises at least one impedance directly coupled between the first terminal of the first power conversion module and the first terminal of the second power conversion module, wherein the at least one impedance is a capacitive impedance that comprises a capacitor, and/or at least one impedance directly coupled between the second terminal of the first power conversion module and the second terminal of the second power conversion module, wherein the at least one impedance is a capacitive impedance that comprises a capacitor.