colliver,

Two ways exist to produce an electric field:

1. A changing electric field produces a magnetic field and a changing magnetic field that produces an electric field.

2. An electric field can be created by an isolated electric charge, in which case the field strength at a distance r from a point charge Q is given by
E= Q/4pi (r^2)e, where e is the permittivity of the intervening medium.

As for the commutator in any experiment, it will only move in one direction unless you reverse the leads to the motor or generator. You might be suggesting that there is some way to avoid the rotating conductor from crossing both sets of field lines but that is only possible by not having rotation of the shaft in the first place. Even with the removal of some field poles in a motor or generator one will only get bearings becoming overheated from the resulting uneven acceleration. It would be like someone playing tetherball by himself.

Cooling substances near zero only reults in a superconductor being formed, increasing the ease of making EM fields. Nothing has ever reached zero Kelvins.