| 摘要 |
A motor/alternator is formed by a single toroidal magnet (2), which may be a hybrid magnet including a permanent magnet (12) and an electromagnet (14) concentrically arranged, having flux conductors (4, 6) which, in combination with flux switches (44), create an alternating magnetic circuit around a power coil (8). The motor/alternator minimizes the amount of material experiencing hysteresis by making the flux switches (44) small and reduces eddy currents in the flux conductors (4, 6) by using a material very resistant to eddy currents. The subsequent reduction in core losses allows for very high electronic frequency operation and thus a high power density. The form of the flux conductors (4, 6) allows for a high number of poles in the motor/alternator thus enabling a high electronic frequency at modest rotational speed. |
