COG

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Related to cogging: cogging mill

COG

Abbreviation for center of gravity.
References in periodicals archive ?
It is shown that the segmentation of the arced magnet pole with radial magnetization into several arced magnet blocks with radial magnetization per pole can lead to a significant reduction of the cogging torque.
The influence of the pole/slot combinations on cogging torque for motors with a number of slots per pole per phase is investigated.
The cogging torque reduction in PM motors has been studied by varying the geometry shape of saliencies of the armature core on stator.
The skewing technique, which is one of the most widely used techniques for reducing cogging torque, has been applied in a PMSG.
In this study, the implementation for the reduction of the cogging torque of PMSGs has been carried out by employing the pole shifting technique.
The cogging torque stems from the interaction between the rotor permanent magnets (PMs) and the stator teeth [6].
In this paper, the cogging torque reduction was carried out in a three-phase, 1 kW, 120 rpm DRFPMG for direct coupled SAWES.
The cogging torque in a permanent magnet machine is given by
Cogging occurs when magnets inside a generator rotor align with the slots in the stator.
realized that changing the ratio of magnets to slots eliminated the cogging. Once they did that they were able to install extremely large magnets in their generators.
Nowadays there are many actions how to reduce pulsations of the cogging torque [1]-[4]:
It should be noted that the cogging torque is depend on geometrical parameters of machine.