產(chǎn)品詳情
IC693MDL646RR
IC693MDL646RR
主要原因是外轉(zhuǎn)子BLDC在機(jī)械結(jié)構(gòu)上更穩(wěn)定。這是因?yàn)殡姍C(jī)轉(zhuǎn)子在高速運(yùn)行下,由于離心力的作用,會(huì)有向外擴(kuò)張的趨勢(shì)。
所以內(nèi)轉(zhuǎn)子BLDC需要非常高的機(jī)械精度,保證轉(zhuǎn)子和定子不會(huì)打架。
但是如果預(yù)留的距離太遠(yuǎn),又會(huì)導(dǎo)致漏磁而影響電機(jī)的整體效率。
但是在外轉(zhuǎn)子BLDC上卻沒有這個(gè)問題,因?yàn)橥廪D(zhuǎn)子天然不受擴(kuò)張影響。
BLDC的缺點(diǎn)
我們現(xiàn)在再回到前面遺留下的問題:BLDC的缺點(diǎn)是什么?
相信你已經(jīng)猜到:我們花了那么多的篇幅來講BLDC的控制方式,足以看到其控制的難度,相對(duì)于有刷電機(jī)來說,是高出了不少的!
所以說BLDC最大的缺點(diǎn),就是他的控制難度高,驅(qū)動(dòng)電調(diào)(Electronic Speed Control,簡稱ESC)價(jià)格較高。
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