A method of making generally symmetrical lamination stacks for electrical machines comprises producing generally symmetrical pole tips from alternating asymmetrical pieces that each have an additional layer in the asymmetrical portion. With the alternating asymmetrical pieces combined, the resulting pole tip is generally symmetrical with a larger possible pole tip width compared with currently-used interleaved stamping techniques.
申请公布号
EP2789074(A1)
申请公布日期
2014.10.15
申请号
EP20120855487
申请日期
2012.12.05
申请人
FISHER & PAYKEL APPLIANCES LTD.
发明人
HILL, GREGORY PAUL;WILLIAMS, JOHN JULIAN AUBREY;DUNCAN, GERALD DAVID;BURNNAND, KERRIN EDMUND;BENSON, MARK GREGORY