field excitation

field excitation

[′fēld ‚ek·sī′tā·shən]
(mechanical engineering)
Control of the speed of a series motor in an electric or diesel-electric locomotive by changing the relation between the armature current and the field strength, either through a reduction in field current by shunting the field coils with resistance, or through the use of field taps.
References in periodicals archive ?
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.
Tenders are invited for Field Excitation Transformer Assembly For 25 Kw Regulator Part No: 520785 Of Best And Crompton Type Regulator.
Reduced field excitation losses resulting in increased performance of the motor leads to low energy consumption in operation of PM motors.
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.
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.
A diffuse sound field excitation can now be generated by a summation of plane waves in presence of the exterior fluid.
Figure 5 shows the same variables' responses to the 50 % step change of field excitation voltage from the nominal operating point (i.

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