Power generator converting fluid energy into electrical energy and power generation system of the same

摘要

A power generator has a magnet rotor rotating upon receiving rotating force from a driving source and a stator coil arranged to face magnetic poles of the magnet rotor. The magnet rotor includes a rotary shaft supported by a housing and a permanent magnet. The stator coil includes coreless winding wires arranged to face the magnetic poles and a three-phase output terminal. The coreless winding wires are formed of effective output winding wires and connected with the three-phase output terminal through a switching device. The switching device is connected to a controlling device. The magnet rotor has a discoid shape including the rotary shaft at the center. The coreless winding wires form a pair of coil bodies arranged to sandwich the magnetic poles. The switching device changes the inductance value to a small value or a large value by connecting the winding wires to the three-phase output terminal.