《航空电机基础》课件-三相变压器新

航空变压器飞机机电设备维修三相变压器用来变换三相交流电压。每一相的变换关系同单相变压器，线电压的关系与绕组的连接方式有关。飞机机电设备维修专业教学资源库

AircraftMaintenanceEngineeringTeachingResourceLibrary概述飞机机电设备维修专业教学资源库

AircraftMaintenanceEngineeringTeachingResourceLibrary飞机机电设备维修专业教学资源库

AircraftMaintenanceEngineeringTeachingResourceLibrary飞机机电设备维修专业教学资源库

AircraftMaintenanceEngineeringTeachingResourceLibrary三相变压器飞机机电设备维修专业教学资源库

Aircraft

Maintenance

Engineering（ME）一、结构特点三相心式变压器，是从三个单相变压器演变而来，如右图。航空三相变压器的铁芯，多采用叠片卷环式E型铁芯：磁导率高，体积小，重量轻。

飞机机电设备维修专业教学资源库

AircraftMaintenanceEngineeringTeachingResourceLibrary飞机机电设备维修专业教学资源库

AircraftMaintenanceEngineeringTeachingResourceLibrary飞机机电设备维修专业教学资源库

AircraftMaintenanceEngineeringTeachingResourceLibrary飞机机电设备维修专业教学资源库

AircraftMaintenanceEngineeringTeachingResourceLibrary三相变压器飞机机电设备维修专业教学资源库

Aircraft

Maintenance

Engineering（ME）二、三相变压器绕组的联结高压绕组首端由A、B、C表示，末端由X、Y、Z表示；低压绕组首端由a、b、c表示，末端由x、y、z表示。飞机机电设备维修专业教学资源库

AircraftMaintenanceEngineeringTeachingResourceLibrary飞机机电设备维修专业教学资源库

AircraftMaintenanceEngineeringTeachingResourceLibrary飞机机电设备维修专业教学资源库

AircraftMaintenanceEngineeringTeachingResourceLibrary飞机机电设备维修专业教学资源库

AircraftMaintenanceEngineeringTeachingResourceLibrary三相变压器飞机机电设备维修专业教学资源库

Aircraft

Maintenance

Engineering（ME）星形联接（Y形联接）：将三相绕组的末端（即X、Y、Z）联接在一起，首端单独引出，就构成一个Y形联接。ABCXYZ星形连接飞机机电设备维修专业教学资源库

AircraftMaintenanceEngineeringTeachingResourceLibrary二、三相变压器绕组的联结飞机机电设备维修专业教学资源库

AircraftMaintenanceEngineeringTeachingResourceLibrary飞机机电设备维修专业教学资源库

AircraftMaintenanceEngineeringTeachingResourceLibrary飞机机电设备维修专业教学资源库

AircraftMaintenanceEngineeringTeachingResourceLibrary三相变压器飞机机电设备维修专业教学资源库

Aircraft

Maintenance

Engineering（ME）在Y形联接中，线电压有效值为相电压的倍；线电压超前相应的相电压30度。飞机机电设备维修专业教学资源库

AircraftMaintenanceEngineeringTeachingResourceLibrary二、三相变压器绕组的联结飞机机电设备维修专业教学资源库

AircraftMaintenanceEngineeringTeachingResourceLibrary飞机机电设备维修专业教学资源库

AircraftMaintenanceEngineeringTeachingResourceLibrary飞机机电设备维修专业教学资源库

AircraftMaintenanceEngineeringTeachingResourceLibrary三相变压器飞机机电设备维修专业教学资源库

Aircraft

Maintenance

Engineering（ME）三角形联接(△形联接)：一相绕组的末端与另一相绕组的首端相连，依次得到一闭合回路，如图

ABCXYZ三角形连接在三角形联接中，只能提供一种电压，线电压即为相电压。飞机机电设备维修专业教学资源库

AircraftMaintenanceEngineeringTeachingResourceLibrary二、三相变压器绕组的联结飞机机电设备维修专业教学资源库

AircraftMaintenanceEngineeringTeachingResourceLibrary飞机机电设备维修专业教学资源库

AircraftMaintenanceEngineeringTeachingResourceLibrary飞机机电设备维修专业教学资源库

AircraftMaintenanceEngineeringTeachingResourceLibrary三相变压器飞机机电设备维修专业教学资源库

Aircraft

Maintenance

Engineering（ME）三相高、低压绕组不同连接方法的表示飞机机电设备维修专业教学资源库

AircraftMaintenanceEngineeringTeachingResourceLibrary二、三相变压器绕组的联结飞机机电设备维修专业教学资源库

AircraftMaintenanceEngineeringTeachingResourceLibrary飞机机电设备维修专业教学资源库

AircraftMaintenanceEngineeringTeachingResourceLibrary飞机机电设备维修专业教学资源库

AircraftMaintenanceEngineeringTeachingResourceLibrary三相变压器飞机机电设备维修专业教学资源库

Aircraft

Maintenance

Engineering（ME）在上面的符号里，分子表示三相高压绕组的接法，分母表示三相低压绕组的接法。当三相绕组联接成星形并引出中线时，则用Y0表示。二、三相变压器绕组的联结飞机机电设备维修专业教学资源库

AircraftMaintenanceEngineeringTeachingResourceLibrary飞机机电设备维修专业教学资源库

AircraftMaintenanceEngineeringTeachingResourceLibrary飞机机电设备维修专业教学资源库

AircraftMaintenanceEngineeringTeachingResourceLibrary飞机机电设备维修专业教学资源库

AircraftMaintenanceEngineeringTeachingResourceLibrary三相变压器飞机机电设备维修专业教学资源库

Aircraft

Maintenance

Engineering（ME）Y/Y接法：高压边的线电压,与低压边的对应线电压同相Y/Δ接法：高压边的线电压UAB，滞后低压边的对应线电压Uab30°三相高、低压绕组不同连接方法，线电压的相位关系飞机机电设备维修专业教学资源库

AircraftMaintenanceEngineeringTeachingResourceLibrary二、三相变压器绕组的联结飞机机电设备维修专业教学资源库

AircraftMaintenanceEngineeringTeachingResourceLibrary飞机机电设备维修专业教学资源库

AircraftMaintenanceEngineeringTeachingResourceLibrary飞机机电设备维修专业教学资源库

AircraftMaintenanceEngineeringTeachingResourceLibrary三相变压器飞机机电设备维修专业教学资源库

Aircraft

Maintenance

Engineering（ME）三、绕组联结方法不同时线电压的变换关系1、星形—三角形接法

2、三角形—星形接法

3、星形—星形接法（三角形—三角形接法）

飞机机电设备维修专业教学资源库

AircraftMaintenanceEngineeringTeachingResourceLibrary飞机机电设备维修专业教学资源库

AircraftMaintenanceEngineeringTeachingResourceLibrary飞机机电设备维修专业教学资源库

AircraftMaintenanceEngineeringTeachingResourceLibrary飞机机电设备维修专业教学资源库

AircraftMaintenanceEngineeringTeachingResourceLibrary三相变压器飞机机电设备维修专业教学资源库

Aircraft

Maintenance

Engineering（ME）推导得出结论：不论Y形联接还是△形联接，三相对称变压器总功率为：Y形接法时：△形接法时：飞机机电设备维修专业教学资源库

AircraftMaintenanceEngineeringTeachingResourceLibrary四、三相变压器的功率飞机机电设备维修专业教学资源库

AircraftMaintenanceEngineeringTeac