Circuit arrangements for mains or distribution networks not specified as AC or DC; Circuit arrangements for mains or distribution networks combining AC and DC sections or sub-networks (arrangements using intermediate DC-AC-DC conversion H02J1/002; arrangements using high-voltage DC [HVDC] links H02J3/36)

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H02J 4/10 using a single network for simultaneous distribution of AC and DC power
H02J 4/20 Networks integrating separated AC and DC power sections

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