検索ワード: cooling methods for rotating electrical machines (英語 - グジャラート語)

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type full sentence in your langvarious requirements are actually leading to a growing demand for high speed permanent magnet motors. first of all, the continuous need for an increased power density. due to the quasi linear relation between rotational speed and shaft power of an electrical machine, increasing the rated speed is an effective way to boost power density and efficiency. hence this approach takes advantage of increasing shaft power without changing the size of the machine. on the other hand, the same performance can be provided in a smaller volume. the latter is paramount in the field of machine tool applications for example. thus spindles or the machine tool in a whole become smaller, weight is reduced and dynamical behavior is enhanced. another point in this industry is the cycle time that a machine tool needs to complete a specific operation. the faster a tool can be moved and rotated the faster it is able to complete its task, not taking into account that high speed cutting operation rely on top speed to machine time efficiently respective parts. further interesting operation fields of high speed permanent magnet motors are applications where a standard gearbox is used to translate the rotational speed of conventional power grid frequency driven motors to higher speed levels. a replacement of this gearbox and the related conventional motor with a speed controlled drive consisting of a high speed permanent magnet motor and a rectifier increase the overall efficiency and reduces the maintenance significantly.age
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