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大工22秋《电机与拖动实验》实验报告及学习要求(标准答案)

时间:2023/4/8点击: 288 次

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                         网络教育学院
电 机 与 拖 动 实 验 报 告
                                          


                                          



                                          

学习中心:          
层    次:                     
专    业:                     
学    号:                     
学    生:                     
完成日期:       年     月    日







实验报告一

实验名称:                                                           


实验目的:                                                          
                                                                    


实验项目:                                                          
                                                                    
                                                                    

(一)填写实验设备表
名称 型号和规格 用途 使用注意事项
电机教学实验台 NMEL-II 
三相组式变压器  
三相可调电阻器 NMEL-03 
功率表、功率因数表 NMEL-20 
交流电压表、电流表 MEL-001C 
旋转指示灯及开关板 NMEL-05 





(二)空载实验
1.填写空载实验数据表格
表1-1
序  号 实     验     数     据 计算数据
 


U1U1。1U2 

1    
2    
3    
4    
5    
6    
7    
2. 根据上面所得数据计算得到铁损耗 、励磁电阻 、励磁电抗 、电压比
表1-2
序  号 实     验     数     据 计    算    数    据
 


U1U1。1U2 




1       
2       
3       
4       
5       
6       
7       




(三)短路实验
1. 填写短路实验数据表格
表2                                               室温θ=     OC
序   号 实      验     数     据 计算数据
 




1   
2   
3   
4   
5   
6   

(四)负载实验
1. 填写负载实验数据表格
表3                                          =1  U1=UN=110V
序  号 1 2 3 4 5 6 7
U2(V)      
I2(A)      

(五)问题讨论
1. 什么是绕组的同名端?
                                                                    
                                                                    
2. 为什么每次实验时都要强调将调压器恢复到起始零位时方可合上电源开关或断开电源开关?
                                                                    
                                                                    

3. 实验的体会和建议
                                                                    
                                                                    
                                                                    
                                                                    
                                                                    
                                                                    
                                                                    

实验报告二

实验名称:                                                           


实验目的:                                                          
                                                                    


实验项目:                                                          
                                                                    
                                                                    

(一)填写实验设备表
序号 名称 型号和规格 用途
1 电机教学实验台 
2 转矩、转速测量及控制平台 
3 三相可调电阻器 
4 电机起动箱 
5 直流电机仪表,电源 
6 旋转指示灯及开关板 
7 直流电压表、直流电流表 







(二)空载特性实验
填写空载特性实验数据表格
表2-1                                      n=nN=1600r/min
UO(V)       
If2(mA)       


(三)外特性实验
填写外特性实验数据表格
表2-2                                 n=nN=1600r/min  If2=If2N
U(V)       
I(A)       


(四)调整特性实验
填写外特性实验数据表格
表2-3                              n=nN=1600r/min,U=UN=200V
I(A)       
If2(A)       

(五)问题讨论
1. 什么是发电机的运行特性?对于不同的特性曲线,在实验中哪些物理量应保持不变,而哪些物理量应测取?
                                                                    
                                                                   
                                                                    
2. 做空载试验时,励磁电流为什么必须单方向调节?
                                                                    
                                                                    

3. 实验的体会和建议
                                                                    
                                                                    
                                                                    
                                                                    
                                                                    
                                                                    
                                                                    

实验报告三

实验名称:                                                           


实验目的:                                                          
                                                                    


实验项目:                                                          
                                                                    
                                                                    

(一)填写实验设备表
序号 名称 型号和规格 用途
1 电机教学实验台 
2 三相笼型异步电动机 
3 电机导轨及测功机 
4 转矩、转速测量及控制平台 
5 交流表 
6 三相可调电阻器 
7 直流电压、毫安、安培表 
8 直流电机仪表电源 
9 旋转指示灯及开关 




(二)测量定子绕组的冷态直流电阻
填写实验数据表格
表3-1                                          室温          ℃
绕组I 绕组Ⅱ 绕组Ⅲ
I(mA)        
U(V)        
R(Ω)        



(三)测取三相异步电动机的运行特性
填写实验数据表格
表3-2                                         
序号 IOL(A) PO(W) T2(N.m) n(r/min) P2(W)
IA IB IC I1 PI PII P1  
1         
2         
3         
4         
5         
6         

(四)问题讨论
1.如何判断出定子三相绕组的首末端?
                                                                    
                                                                   
                                                                    
2. 三相笼型异步电动机的起动方法有几种?
                                                                    
                                                                    
3. 三相异步电动机的运行特性是指哪些特性?
                                                                    
                                                                    

4. 实验的体会和建议
                                                                    
                                                                    
                                                                    
                                                                    
                                                                    
                                                                    
                                                                    


实验报告四

实验名称:                                                           

实验目的:                                                          
                                                                    


实验项目:                                                          
                                                                    
                                                                    

(一)填写实验设备表
序号 名称 型号和规格 用途
1 电机教学实验台 
2 电机导轨及转速测量 
3 同步电机励磁电源 
4 直流电机仪表、电源 
5 三相同步电机M08 
6 三相可调电阻器900Ω 
7 直流并励电动机M03 
8 三相可调电阻器90Ω 
9 功率表、功率因数表 
10 交流电压表、电流表 
11 旋转指示灯及开关板 

(二)三相同步发电机与电网并联运行时有功功率的调节
填写实验数据表格
表4-1     U=220V(Y)   =      A

号 测      量     值 计   算   值
输出电流I(A) 输出功率P(W) I
(A) 
(W) cos
 




 
1       
2       
3       
4       
5       
6       


(三)三相同步发电机与电网并联运行时无功功率的调节
填写实验数据表格
表4-2       n=1500r/min   U=220V    W

号 三  相  电  流 I(A) 励磁电流

 




1    
2    
3    
4    
5    
6    
7    
8    
9    

(四)问题讨论
1.三相同步发电机投入电网并联运行有哪些条件?不满足这些条件将产生什么后果?
                                                                    
                                                                   
                                                                    
2. 三相同步发电机与电网并联的方法有哪些?
                                                                    
                                                                    
3. 实验的体会和建议
                                                                    
                                                                    
                                                                    
                                                                    
                                                                    
                                                                    
                                                                    






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