| 摘要 |
<p>A system and a method for energy conversion with high efficiency are provided. The system comprises: a stator (1) with a stator stamping comprising at least one cooling air passage for facilitating heat transfer and at least one winding slot to accommodate a winding (2) with a full pitched coil; a rotor (3) with rotor stampings comprising a central rotor shaft, at least one slot along the periphery of the rotor for squirrel cage (4) such that the angle between the slots is non-uniform in at least one arrangement, and at least one slot to accommodate at least one magnet (5); and a forced air cooling fan (6) which forces air through air passages of stampings. The method comprises: connecting electric supply to terminals of the forced air cooling fan (6), which enables cooling air to go through the air passage of the stator stamping to cool the stator (1) and the stator winding (2); passing electric supply to terminals of the stator winding (2), which enables creation of rotating magnetic field thereby inducing voltage and current in the squirrel cage (4), in turn generates starting and accelerating torque, therefore the rotor (3) tends to accelerate near synchronous speed; creating unequal predefined angles between the rotor slots, which enables prevention of stalling and cogging during accelerating period to achieve more space at pole centre and sinusoidally reduce space towards pole ends; and generating running torque due to magnetic field due to the magnets (5) and current flowing in the stator winding (2).</p> |
