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Five-phase Surface-mounted Permanent Magnet (SPM) machine offers the possibility of using the third harmonic of current to improve the average torque. In this paper, the use of third harmonic to compensate the pulsating torque and thus to reduce the vibrations transmitted to the shaft is explored. According to the multimachine theory, the torque of a five-phase star-connected SPM machine is distributed...
In order to drive the existing induction motors effîciently, the energy loss should be minimized during its operation. It has been reported that the analytically designed optimal torque and the rotating speed trajectories minimize the energy loss of the induction motor (IM) drive system under given drive conditions. In the reported analytical methods, however, the iron loss and other un-modeled loss...
This paper presents a comparison of two alternative control structures for an active oscillation damping of truck drive trains. Uncomfortable oscillations in the drive train may occur in phases when the dry clutch is slipping. The negative friction coefficient of the clutch lining could cause an undesired judder, which leads to a severe driver discomfort. At first, a control-oriented model is derived...
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