Tidal Power Generation System with Counter-rotating

This paper describes a tidal power generation system with counter-rotating generator. The method of charging is charging current control. The demonstration experiment was conducted by the method using counter-rotating generator and the usual method at Kanmon Straits. They realized following maximum efficiency. However the mechanical loss of the generator’s stator was 3 times larger than rotor loss. Also, in counter-rotating, the stator loss was about 2.5 times the usual. Therefore in order to increase the power generation capacity, selecting a generator that the stator loss is smaller is important in counter-rotating.