Some concepts about motors and the attempt to overcome the issue of the BEMF. As we saw in the first part of Peter Lindemanns movie, the conventional motor is always acting as a generator as well. This generated BEMF works against the efficiency of the motor. Therefore we should generally not strive for the highest RPM of the motors, as in this condition the COP is the lowest. As the motor is loaded it slows down and generates less of the adverse BEMF raising the performance of the maschine. In this statement I agree with him, but I disagree in the part where he says that a magnetic attraction motor do not generate anything, this is only true while the electromagnets are turned off. At the moment when a piece of iron is exposed to a magnetic field it becomes magnetized itself and thus produces an BEMF when approaching the coil or moving away from it. Note that using iron it becomes always magnetized in attraction mode, which causes the produced BEMF in the coil to be in opposite direction as the applied voltage when approaching the coil (current decreases) and in the same direction when moving away (current increase). This is true for all conventional motors also AC induction motors and including the most efficient of them, the switched reluctance motor. The last mentioned do not virtually generate any BEMF while it is under constant load in locked state, but when the load is changing the same effect appears producing the changes of current in the coils.
So, one concept to overcome this is the implementation of the magnetic repulsion motor, which has been adopted by Robert Adams and John Bedini for example. In this case the armature has to be constructed with permanent magnets or other sets of electromagnets. It is supposed that in this configuration the generated BEMF would assist the applied EMF to the motor instead of working against it.
What is the difference of a magnetic motor to other magnetoelectric devices like transformers?
I think the most important difference is that in the case of the motor we can find engineer solutions to take advantage to transform a “static magnetic field” into useable work. Of course, power is used to turn the magnet on, then it would be sufficient to overcome the I2R losses during the work cycle, and a significant part of the current could be recovered at switching off.
All this still do not involve the resonant phenomenon, which could bring this machine still to another level. It opens the doors for techniques of very high currents with a great potential of energy recovery, and small I2R losses with the usage of thick conductors.
