对half-coil和whole-coil的解释

jeffwjz

初学ansoft时，在使用RM时需要选择绕组模式为half-coil或whole-coil，中文称作半极式绕组和全极式绕组（或叫做庶极式绕组和显极式绕组）。这让我觉得很头疼，对此也有很多不解之处。我曾经试图在网上查找相关的信息，却也获之甚少。相信也有不少ansoft的同学对此感到困惑。在forlink版主的博客里有对庶极式绕组和显极式绕组的解释，但本人仍觉得不够直观。

就这个问题，我特地发邮件询问了我的导师，回复说其实两种绕组接法产生的磁极是完全相同的，两种接法的不同之处只是端部接法的相异。先将全文复制如下，以飨读者。邮件中部分内容需要参见附件文档，一并上传。邮件和文档都是英文的，请耐心阅读。

JW Windings 1.pdf (356.49 KB, 下载次数: 389)

2011-8-26 10:46 上传

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Dear XXX,

                          Here are a few more comments on windings. I shall refer to the
Figures in the scan I sent the other day.

We didn't really do anything on practical windings in the lectures. The example I showed
was the simplest I could use to explain how 3-phase rotating fields are produced.

Whole- and half-coil windings work equally well in producing magnetic poles. The thing to
focus on is the conductors in the slot. Fig 4-12a shows a 6-pole winding. Assume each
coil has N-turns. Then each slot will have N-conductors. The end connections turn the
slot conductors into a half-coil arrangement. Current flows clockwise round each coil (in
this example).

Fig 4-12b again shows a 6-pole winding, but this time it is whole coiled. If each coil
has N/2 turns, the winding would be equivalent to 4-12a because each slot will contain
N-conductors. (In each slot the coil sides would usually be one above the other to form a
2-layer arrangement.) The end connectors turn the slot conductors into the whole-coil
arrangement. Current flows clockwise in alternate coils and anticlockwise in the coils in
between.

Single concentrated coils, like those shown in 4-12, are hardly ever used. The mmf
waveform would be too much like a square wave. In the case of salient poles (4-11) the
air-gap would be shaped to produce an mmf distribution nearer to that of a space
sinusoid. Another common way of improving waveshape is to use more slots and coils - as
in 4-14. This Fig shows one of the most common ways of laying out one phase of a
multi-phase winding.

Hope the above helps.

finite

全英文啊，

jeffwjz

回复 2# finite


    对这个问题感兴趣的话，也可以参照forlink版主的博客里的解释。但是觉得那里的表述还是显得复杂，对于我来说还是喜欢我提供的这种比较直白的解释 虽然是英文的。

秀甲天下

回复 3# jeffwjz
刚开始学习maxwell，多谢楼主提供资料

husteryj

学习了 谢了~

wangfei8261

深深的感谢楼主。

jiajiabobo

好资料，对此问题有更深入的理解啦。

zhongke

谢谢楼主！！

lchjcumt

好资料，对此问题有更深入的理解啦。

kdklzhu

感谢LZ分享  我一直对这个问题缠夹不清

focus2009

感谢分享!!!!!

ppek

感谢楼主分享啊

岁月如割

多谢楼主，，，，

Mdriver

高手就是高手。。。。。

摘星_子

感谢分享!!!!!~~

wpl1988

有空翻翻论坛老帖子总是会有惊喜....
多谢楼主

bailin7516

全英文的！新手感觉好贵！