Wave winding having a low cogging torque, stator and electric machine comprising a wave winding of said type
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United States of America Patent
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Jun 11, 2019
Grant Date -
Nov 9, 2017
app pub date -
Nov 12, 2015
filing date -
Nov 13, 2014
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A wave winding for a stator of an electric machine is configured to be placed in a series of stator grooves located along a periphery of the machine to increase power and efficiency of the machine by avoiding losses, particularly during upper rotational speed range operation. The wave winding has at least two conductors for one respective phase of the machine. The conductors are interconnected in parallel and/or series and can be disposed at a given winding pitch in a number of at least two successive stator grooves of each magnetic pole and each phase of the machine in a sequence predefined for each phase and for one respective magnetic pole along the periphery of the machine. The predefined sequence at least of the conductors interconnected in parallel is transposed by at least one groove skip in at least one position along the periphery of the machine.
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