On 24/06/2017 21:05, T i m wrote:
On Sat, 24 Jun 2017 20:20:18 +0100, (Roger Hayter)
wrote:

snip

Assuming it doesn't have brushes,

It doesn't Roger, an AC 'synchronous motor' I think they call them.

I think I would call them shaded pole induction motor:

https://en.wikipedia.org/wiki/Shaded-pole_motor

But who knows the economics of motors and control gear these days.