The Universal Electric Machine (UEM) separates the speed of the magnetic field of the rotor from the mechanical speed of the rotor. The UEM generates AC power at a frequency that is independent of the mechanical drive speed of the rotor. Thus the UEM can generate power at either 50 Hz or 60 Hz regardles of prime mover speed. The UEM maintains a steady-state frequency through a load transient, however severe, from full load to no load or vice versa. As a motor, the UEM uses this same ability to control speed independently of line frequency. The UEM simulates the torque-rpm characteristics of a large mechanical prime mover as the torque increases with mechanical speed. The UEM is capable of automatic synchronization of the electrical output/input to the power source, in frequency, phase angle and voltage. As a result of using modern power electronics, the configuration of the machine is brushless.
|
|
|