Motor rotor and permanent magnet motor

The invention relates to a motor rotor and a permanent magnet motor, The motor rotor comprises a rotor iron core; An even number of first permanent magnets arranged along a circumferential interval ofthe rotor core on an axial end face of the rotor core; And at least two second permanent magnets hav...

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Bibliographic Details
Main Authors WANG MIN, XIAO YONG, SHANG WENHAI
Format Patent
LanguageChinese
English
Published 21.12.2018
Subjects
CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
DYNAMO-ELECTRIC MACHINES
ELECTRICITY
GENERATION
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Summary:The invention relates to a motor rotor and a permanent magnet motor, The motor rotor comprises a rotor iron core; An even number of first permanent magnets arranged along a circumferential interval ofthe rotor core on an axial end face of the rotor core; And at least two second permanent magnets having a coercive force greater than that of the first permanent magnet, each of the second permanentmagnets being spaced apart between the two adjacent pairs of the first permanent magnets, and each of the second permanent magnets being arranged in series with two adjacent first permanent magnets. By changing the magnetic field strength of the first permanent magnet with low coercivity by magnetization current, the adjustable magnetic field of the permanent magnet motor is realized, so that theefficiency of the permanent magnet motor at both high frequency and low frequency is realized. At the same time, when the first permanent magnet is magnetized, two first permanent magnets without a second permanent magnet are m
Bibliography:Application Number: CN201811295287