ELECTRICAL POWER SYSTEM

The disclosure relates to an electrical power system for connecting an electrical machine to first and second DC networks operating at different voltages. In an example embodiment, an electrical power system (700) comprises: an electrical machine (702) having first, second, third and fourth windings (703a-d); first, second, third and fourth AC:DC power electronics converters (701a-d) each connected to receive an input AC supply from the respective first, second, third and fourth windings (703a-d), each AC:DC power electronics converter (701a-d) having first and second DC output terminals connecting the AC:DC power electronics converters (701a-d) to first, second and third DC supply output terminals (706a-c), wherein the first and second windings (703a, 703b) are arranged to provide an AC supply to the respective first and second AC:DC power electronics converters (701a, 701b) in quadrature to each other and the third and fourth windings (703c, 703d) are arranged to provide an AC supply to the respective third and fourth AC:DC power electronics converters (701c, 701d) in quadrature to each other.