Synchronous motors have different rotor magnetic
field excitation types such as IPM, wound-field or reluctance.
Due to an additional
field excitation winding placed on the stator or rotor of HE machine a wide range of the stator flux linkage can be effectively achieved.
The latter also increases when the sine
field excitation is replaced by a meander one (Figure 3).
Reduced
field excitation losses resulting in increased performance of the motor leads to low energy consumption in operation of PM motors.
The magnetic
field excitation will be generated by an array of 128 copper wires with square section arranged as shown in Figure 1.
Yet, for a more uniform
field excitation along the axis of a thick resonator, the case of a [much less than] b (wide E-wall) has also been employed (with a = 4 mm and b = 40 mm at the same [E.sub.z] polarization, when gradually increasing b size starting from the metallic waveguides).
Have you ever not been able to flash the field of a generator because the
field excitation leads were swapped incorrectly?
It is worth noting that due to the strong dependence with axial electric
field excitation and the resonant behavior of the equivalent quasi-static circuit, the CSRR elements embedded within the microstrip line will not perturbate the overall response of the device in out-of-band operation.
An auxiliary stator winding that is independent of the main output winding and dedicated solely for
field excitation, is key to the new alternator technology, Kohler said.
Also, the permanent magnets used in brushless motors eliminate
field excitation, which produces heat in a brush-type d-c motor.