Brushless wound-rotor doubly-fed electric machine
 | It has been suggested that this article be merged with Doubly-Fed_Electric_Machines, Wound-Rotor_Doubly-Fed_Electric_Machines and Brushless_Doubly-Fed_Electric_Machines. (Discuss) Proposed since June 2007. |
The brushless wound-rotor [synchronous] doubly-fed electric machine (i.e., electric motor or electric generator) incorporates the most optimum electromagnetic core structure of any electric machine, which is the core structure of the wound-rotor doubly-fed electric machine, but without the Achilles' Heel of the wound-rotor doubly-fed electric machine, which is the multiphase slip ring assembly with control instability. Development of the brushless wound-rotor [synchronous] doubly-fed electric machine seems to be limited to one company, Best Electric Machines (http://www.bestelectricmachine.com).
How it works
The brushless wound-rotor [synchronous] doubly-fed electric machine (i.e., electric motor or electric generator) incorporates a proprietary multiphase electromagnetic commutator that instantaneously emulates the speed dependent electrical excitation requirements of the electric motor or electric generator under control, regardless of speed, and at the same time, exchanging virtually pure sinusoidal multiphase electrical power between the rotor (or stator) multiphase active winding set(s) and the electrical power grid without electrical-mechanical contact of any kind (i.e., brushless).