back electromotive force


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back electromotive force

[′bak i¦lek·trō¦mōd·iv ′fȯrs]
(electromagnetism)
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
References in periodicals archive ?
The study of the quality of the waveforms of back electromotive forces and of the electromagnetic torque influenced essentially by the magnetic armature reaction and the validity of simplifying hypotheses such as the low reluctance of the iron parts that constitute the motor over a wide range of power lacks this study.
where [omega] denotes the angular velocity of motor and [C.sub.e] is the back electromotive force constant.
Figure 4 shows the no-load back electromotive force (EMF) waveforms when rotating at 1000 rpm, the number of conductors in each coil is chosen to be 1 for both machines.
The back electromotive force (EMF) is too small in the low speed, which is crucial to estimate.
A growing number of applications, however, are now eliminating the sensor through one of several methods, such as back electromotive force (EMF) or inductance measurement.