I just made a google search for Written Pole Motors and found that this is a rather cool new technology, although simple.
The main points are:
Single phase (up to 100 HP/75 kW) which makes it possible to run in North American homes and farms without 3-phase converter. (That should save some money)
High starting torque but low inrush current (it picks up speed slowly). Insensitive to voltage sags, which means that it should work well on the substandard single phase lines found in developing countries.
Another cool feature is that the power factor is at or near unity, which should allow smaller circuits and transformers.
The only thing it doesn't promise is low weight and small size, which hints that it is heavy and bulky. (A 30 hp 230V motor weighs 300 kg. Does anybody know the weight of a 30 hp 3-phase?)
