A direct current DC power transmission system configured to generate a DC electric field component and an alternating current AC electric field component, said DC power transmission system comprising: a transmission end converter (106; 200; 300; 400; 500; 600) comprising: an AC stage (202; 302; 402; 502; 602) configured to receive AC electrical power, said AC stage comprising: a transformer (208; 308; 408; 508; 608) comprising primary windings (210; 310; 410; 510; 610) and secondary windings (212; 312; 412; 512; 612) configured to be electromagnetically coupled to each other and electrically isolated from each other; and an AC/AC converter (206; 306; 406; 506; 606) having substantially no insulating features against the DC electric field component and being electrically coupled to at least one primary winding of said primary windings; and an AC/DC conversion stage (204: 304; 404; 504; 604) positioned downstream of said AC stage, said AC/DC conversion stage comprising an AC/DC rectifier (214; 314; 414; 514; 614) configured to convert AC electrical power to DC electrical power without external control, said AC/DC rectifier coupled to at least one secondary winding of said secondary windings; wherein said AC/AC converter (206; 306; 406; 506; 606) comprises a plurality of parallel AC/AC converters; and wherein said AC/DC rectifier (214; 314; 414; 514; 614) comprises a plurality of AC/DC rectifiers positioned downstream of said plurality of parallel AC/AC converters (206; 306; 406; 506; 606) and connected in series on the DC side. a transmission end converter (106; 200; 300; 400; 500; 600) comprising: an AC stage (202; 302; 402; 502; 602) configured to receive AC electrical power, said AC stage comprising: a transformer (208; 308; 408; 508; 608) comprising primary windings (210; 310; 410; 510; 610) and secondary windings (212; 312; 412; 512; 612) configured to be electromagnetically coupled to each other and electrically isolated from each other; and an AC/AC converter (206; 306; 406; 506; 606) having substantially no insulating features against the DC electric field component and being electrically coupled to at least one primary winding of said primary windings; and an AC/DC conversion stage (204: 304; 404; 504; 604) positioned downstream of said AC stage, said AC/DC conversion stage comprising an AC/DC rectifier (214; 314; 414; 514; 614) configured to convert AC electrical power to DC electrical power without external control, said AC/DC rectifier coupled to at least one secondary winding of said secondary windings; wherein said AC/AC converter (206; 306; 406; 506; 606) comprises a plurality of parallel AC/AC converters; and wherein said AC/DC rectifier (214; 314; 414; 514; 614) comprises a plurality of AC/DC rectifiers positioned downstream of said plurality of parallel AC/AC converters (206; 306; 406; 506; 606) and connected in series on the DC side. an AC stage (202; 302; 402; 502; 602) configured to receive AC electrical power, said AC stage comprising: a transformer (208; 308; 408; 508; 608) comprising primary windings (210; 310; 410; 510; 610) and secondary windings (212; 312; 412; 512; 612) configured to be electromagnetically coupled to each other and electrically isolated from each other; and an AC/AC converter (206; 306; 406; 506; 606) having substantially no insulating features against the DC electric field component and being electrically coupled to at least one primary winding of said primary windings; and an AC/DC conversion stage (204: 304; 404; 504; 604) positioned downstream of said AC stage, said AC/DC conversion stage comprising an AC/DC rectifier (214; 314; 414; 514; 614) configured to convert AC electrical power to DC electrical power without external control, said AC/DC rectifier coupled to at least one secondary winding of said secondary windings; wherein said AC/AC converter (206; 306; 406; 506; 606) comprises a plurality of parallel AC/AC converters; and wherein said AC/DC rectifier (214; 314; 414; 514; 614) comprises a plurality of AC/DC rectifiers positioned downstream of said plurality of parallel AC/AC converters (206; 306; 406; 506; 606) and connected in series on the DC side. a transformer (208; 308; 408; 508; 608) comprising primary windings (210; 310; 410; 510; 610) and secondary windings (212; 312; 412; 512; 612) configured to be electromagnetically coupled to each other and electrically isolated from each other; and an AC/AC converter (206; 306; 406; 506; 606) having substantially no insulating features against the DC electric field component and being electrically coupled to at least one primary winding of said primary windings; and an AC/DC conversion stage (204: 304; 404; 504; 604) positioned downstream of said AC stage, said AC/DC conversion stage comprising an AC/DC rectifier (214; 314; 414; 514; 614) configured to convert AC electrical power to DC electrical power without external control, said AC/DC rectifier coupled to at least one secondary winding of said secondary windings; wherein said AC/AC converter (206; 306; 406; 506; 606) comprises a plurality of parallel AC/AC converters; and wherein said AC/DC rectifier (214; 314; 414; 514; 614) comprises a plurality of AC/DC rectifiers positioned downstream of said plurality of parallel AC/AC converters (206; 306; 406; 506; 606) and connected in series on the DC side.