功率管的換相信號需要從位置傳感器的狀態(tài)得出,換相時(shí)刻也就是霍爾傳感器的信號狀態(tài)改變的時(shí)刻。因此霍爾傳感器和三相繞組對應(yīng)關(guān)系的確定對于電機(jī)的正確運(yùn)行非常重要。
無刷直流電機(jī)采 用電子換向裝置代替了傳統(tǒng)直流電機(jī)的機(jī)械換向裝置,又具有與直流電機(jī)類似的機(jī)械特性,其磁鋼置于轉(zhuǎn)子上,通過不斷地變換定子繞組通電方式產(chǎn)生旋轉(zhuǎn)磁場驅(qū)動 轉(zhuǎn)子轉(zhuǎn)動。由于轉(zhuǎn)子采用了永磁體結(jié)構(gòu),無刷直流電機(jī)具有體積小、重量輕、結(jié)構(gòu)簡單的特點(diǎn)。隨著電力電子技術(shù)的發(fā)展,無刷直流電機(jī)的應(yīng)用越來越廣泛。快速有效地確定位置傳感器和繞組間的相序關(guān)系是實(shí)現(xiàn)無刷直流電機(jī)調(diào)速功能的關(guān)鍵。
本文通過對三相無刷直流電機(jī)傳感器位置、輸出信號與繞組電動勢間的關(guān)系進(jìn)行分析,提出了一種測定其相序的有效方法。
新聞:嘉蔭縣106步進(jìn)電機(jī)42BYGH39-1206銷售中心
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