Скачать или смотреть Dual Stator Alternator Design

A 3-phase permanent magnet alternator design using two separate stators, one on either side of a flat disc-shaped rotor. Disc rotor + linear coil arrangement (as opposed to cylindrical rotor and radial coil arrangement) permits access to magnetic flux from BOTH ends of the magnet packs simultaneously.

That is to say, each stator is energized by the same 6 magnets on the rotating disc. Each stator generates approx 600mA of charging current. Any more than 600mA creates limited returns from these coils as inductive reactance generates a resistance to further increases in current flow. However, by connecting the diode bridges of each stator in PARALLEL, the combined output to a resistive load is in excess of 1200mA or 1.2A, despite no further increase in current passing through either individual stator.

Actual values obtained from the combined stators, in a short-circuit arrangement, are 35-40 Volts and 1.35 A (1,350mA). When actually charging a large Motomaster 12V battery, the values become 13.5V and 900-1100mA. This is comparable to the output of the AC-DC adapter unit which comes with the Motomaster rechargeable battery, so charging from this source should not take longer than the normal wall-socket source.

The main proof-of-principle is that of obtaining a large combined charging current output without exceeding the current limitations of each individual stator. Also proof that two stators can be driven simultaneously by the same set of magnets on a flat disc rotor.

Comparable output from a radial design, which is mechanically more stable and elegant, would require one set of magnets for each stator used, and hence more materials cost. However, conceivably such a design could be more streamlined, mechanically durable, an incorporate up to 3 separate stators for and output likely exceeding 2.0 Amps.

NOTE: early in the video my description of the radial arrangement gives a false impression that the "current limitation" I describe is inherent to the radial arrangement. In fact it is inherent in the single stator, not the radial arrangement which, if done properly with a dual/triple stator attached, would be ideal.