| 摘要 |
<p>A rotary electric machine (13, 14, 15) is incorporated in a turbocharger (1) between a turbine (3, 9) and a compressor (2, 8) and is operable as a generator driven by the turbine (3, 9) and as a motor to drive the compressor (2, 8). The machine comprises a rotor (13) and a surrounding stator (15). To reduce hysteresis losses the stator (15) has a core made of ferrite surrounded by a stator winding and the rotor (13) is formed by a permanent magnet, which surrounds a shaft (6) of the turbocharger (1) and has at least three pairs of poles disposed diammetrically opposite each other, and a reinforcing tube (14), which is made of thin high-strength material such as titanium alloy and is force-fitted around the magnet. </p> |
