Electro-Mechanical Interactions
The primary purpose of every rotating electrical machine is to cause torque to exist between the rotor and the stator so that power is converted between electrical and mechanical forms. The torque comes to exist through the presence of a magnetic field and even small perturbations in that magnetic field can cause sideward forces to exist without significantly changing the torque. These net sideward forces are generically termed “UMP” (Unbalanced Magnetic Pull).
The UTC has been the exploring, both through experiments and modelling, the capability of electrical machines to produce transverse forces that are helpful in suppressing vibration.