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yong ci jiao liu fa dian ji
Pages: 31-34
Year: Issue:  5
Journal: Farm Machinery

Keyword:  永磁交流发电机发动机熄火闭合回路切割磁力线照明电源转子结构永磁转子电磁感应原理搭铁线转子轴;
Abstract: <正> 1.永磁交流发电机有何特点? 答:永磁交流发电机具有结构简单、使用保养方便和电压波动性低,不需配用专门的调节装置等特点。东方红—75 (54)和东风—12、工农—11、12手扶拖拉机等均用其做照明电源。它的主要缺点是发动机低速工作时,灯光不亮。而且只要发动机熄火则灯也随之熄灭。 2.永磁交流发电机是怎样发电的? 答:根据电磁感应原理可知:一个构成闭合回路的线圈在固定磁极的磁场中运动切割磁力线时,线圈中产生感应电流。如将线圈固定,移动磁铁,使磁铁
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