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- 1970-1-1
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发表于 2010-2-1 13:04
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来自: 中国江苏苏州
下面的非原创,仅供分享!!!
First, aluminum’s conductivity is lower than copper. To compensate, aluminum magnet wire must have larger cross-sections than the equivalent copper wire to offer the same conductance. This means windings wound with aluminum wire will likely have greater volume compared with an equivalent copper wire motor.
第一,铝的导电性比铜低。为了补偿,铝漆包线为了达到铜漆包线相同底导电性能必须有更大的横截面积,这意味着铝线绕组的线槽相对于铜线绕组来说需要更大的容积。
The second consideration is properly connecting the ends of the aluminum magnet wire. The reason for this goes back to your high school chemistry course. You may remember that aluminum oxidizes much faster than other metals—in fact, if exposed to air, powdered aluminum will completely oxidize in a few days, forming a fine white powder. But, when exposed to air, fabricated aluminum (sheets, wire, etc.) tends to form a hard insulating oxide layer that stops the oxidizing process.
第二个需要考虑的是铝漆包线的正确的端接,其原因你可以回忆一下你高中的的化学课程,你应该还记得铝比是其他金属更容易氧化的,如果暴露在空气中,铝粉会在几天内完全氧化,变成了很细的白色粉末。但是,如果暴露在空气中,成品的铝(铝片,铝线等)会在表面形成坚固的绝缘的氧化膜,这样会阻止进一步的氧化。
To make a proper connection that ensures conductivity, the oxide layer of the aluminum magnet wire must be completely pierced and yet pierced in such a way to prevent air from coming in any further contact with the aluminum. Motor manufacturers have developed high-pressure, piercing crimp connectors to do the job. These improved connection methods have helped make motors with aluminum windings every bit as reliable as motors with copper windings.
为了进行正确的端接来保证传导性,铝漆包线的氧化层必须完全被刺破,并且刺破后必须确保空气不能进入更深,马达制造商已经开发出了大压力的刺破型的压接端子来解决这个问题。这种改进型的连接方式帮助铝漆包线马达达到和铜漆包线绕组马达一样的稳定性。
It must be pointed out that motor efficiency is a much trickier issue in the great copper versus aluminum debate. It is possible to match the power performance of a motor wound with aluminum to a motor wound with copper wire. But since aluminum requires more turns and/or a larger diameter wire, this may not always be economically feasible in some applications. In situations where efficiency and volume are not issues (such as where the motor only has to work occasionally or for very short periods of time), aluminum magnet wires make an acceptable motor.
必须指出的是马达效率是在铜vs铝的大讨论中很容易把人搞晕的问题.铝线绕组和铜线绕组的能效比的比较是可能的。因为铝线需要更多的绕数和更大的直径,在一些应用中可能不是经济可行的,但在一些对体积和效率要求不高的情况下,铝线马达是一种可以接受的选择。 |
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