A converter arrangement (60) is disclosed, which is configured to convey power from a first power system (61) to a second power system (62), or vice versa, wherein the second power system (62) has a nominal operating voltage frequency range and a nominal operating voltage amplitude range. The converter arrangement (60) comprises at least one converter module (63, 64, 65), which comprises at least one first converter unit (66, 73, 81) configured to, on basis of power conveyed from the first power system (61) and the nominal operating voltage frequency range, generate an amplitude-modulated voltage waveform having a selected frequency within the nominal operating voltage frequency range. The at least one converter module (63, 64, 65) comprises at least one transformer (67, 74, 82) configured to receive the amplitude-modulated voltage waveform and convert amplitude thereof on basis the nominal operating voltage amplitude range so as to generate an amplitude-modulated voltage waveform having the selected frequency within the nominal operating voltage frequency range and a selected amplitude within the nominal operating voltage amplitude range. The at least one converter module (63, 64, 65) comprises at least one second converter unit (68, 75, 83) configured to receive the amplitude-modulated voltage waveform generated by the at least one transformer (67, 74, 82) and on basis thereof generate a demodulated voltage waveform having a frequency within the nominal operating voltage frequency range and an amplitude within the nominal operating voltage amplitude range, wherein the at least one second converter unit (68, 75, 83) is electrically connected to the second power system (62).