切向结构永磁电机极对数在3~6时较为合适。
极对数增加时，减小磁钢厚度能提高电机的性价比。
The rare earth magnet thickness decreases to improve the performance when pole numbers increase.
极对数增加时，减小磁钢厚度能提高电机的性价比。
The rare earth magnet thickness decreases to improve the performance when pole numbers increase.
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