IC693BEM331CA
下面對(duì)三相全波無(wú)刷電機(jī)①～⑥的狀態(tài)與感應(yīng)電壓波形之間的關(guān)系進(jìn)行說(shuō)明。
①：線(xiàn)圈1位于S極和N極之間的中點(diǎn)，由于S極產(chǎn)生的磁通從線(xiàn)圈外側(cè)出來(lái)的工作變?yōu)镹極產(chǎn)生的磁通進(jìn)入線(xiàn)圈的工作，因此磁通密度的變化最大。所以線(xiàn)圈1的感應(yīng)電壓相對(duì)于線(xiàn)圈中點(diǎn)是正電壓，且最大。
②：由于磁通密度的變化比之前略小，因此線(xiàn)圈1的感應(yīng)電壓降低。
③：由于通往線(xiàn)圈1的磁通密度的變化進(jìn)一步變小，因此感應(yīng)電壓也進(jìn)一步降低。
④：由于N極在線(xiàn)圈端，磁通密度的變化變?yōu)榱?，所以線(xiàn)圈1的感應(yīng)電壓變?yōu)榱恪?
⑤：由于N極逐漸遠(yuǎn)離線(xiàn)圈1，進(jìn)入線(xiàn)圈的磁通量逐漸減少，因此感應(yīng)電壓變?yōu)樨?fù)值，磁通量變化小，故感應(yīng)電壓略有下降。
⑥：由于通往線(xiàn)圈1的磁通密度的變化進(jìn)一步變小，因此感應(yīng)電壓也進(jìn)一步降低。
同樣，線(xiàn)圈2和線(xiàn)圈3在從S極切換到N極的中點(diǎn)產(chǎn)生最高的正感應(yīng)電壓，在從N極切換到S極的中點(diǎn)產(chǎn)生最高的負(fù)感應(yīng)電壓，當(dāng)N極和S極位于線(xiàn)圈端時(shí)，感應(yīng)電壓變?yōu)榱恪?
另外，如波形圖所示，各線(xiàn)圈的感應(yīng)電壓波形與其驅(qū)動(dòng)電流波形的相位相同。
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