Patent ID: 8294316

Claim:
An electrical power generation apparatus comprising: a first shaft; a first winding mounted to said first shaft and including a plurality of coils arranged for revolution about said common axis; a first electrical load mounted to said first shaft and electrically connected to receive electrical current from said first winding; a second shaft; and a first field array mounted on said second shaft, adjacent to said first winding, said first field array including first and second flat circular Halbach arrays with mutually-opposing working surfaces facing said first winding, N poles on the working surface of the first flat circular Halbach array being aligned with S poles on the working surface of the second flat circular Halbach array to form shielded magnetic dipoles between the working surfaces of said field array, wherein said first shaft and said second shaft are operatively connected for contra-rotation of said second shaft relative to said first shaft, so that rotation of said first field array relative to said first winding induces an electrical current in said first winding to power said first electrical load.