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电机原理

电机的能量转换  Motor as an energy converter

电机的功能就是将电能转化为机械能,为机械的运转产生推动力

The function of the motor is converting electrical power to mechanical power.it provides motion force to a mechanical device.

电机的损耗  Losses

电机在能量转换过程中会产生能量损耗,例如:摩擦损耗、绕组发热损耗、铁磁损耗。

※空心杯电机不会产生铁磁损耗。

There will be power losses in the power conversion process e.g.frictional losses,power losses of winding,iron losses.

※lron losses do not occur in the coreless motor.

电机的特性曲线  Performance curve

特性曲线由以下4个关键参数构成:

1、空载转速(No):指电机在额定电压下不连接任何负载时,在输出轴端测得的转速,单位为RPM(转每分钟)。

2、空载电流(Io):指电机在额定电压下不连接任何负载时,在电机两端子上测得的输入电流量,单位为A(安培)。

3、堵转转矩(Ts):指电机在额定电压下,因加载引致电机停止旋转时,测得的最大转矩,单位为g.cm(克.厘米)。

4、堵转电流(Is):指电机在额定电压下,因加载引致电机停止旋转时,测得的电流,单位为A(安培)。

※建议您不要对电机进行堵转操作,因为此操作有可能导致电机“退磁”甚至造成烧损。


It consiss of 4 major parameters:

1、No-load speed(No):Motor with no load under rated voltage,speed is measured in the output shaftside.Unit:RPM(rotation per minute)

2、No-load current (Io):Motor wifh no-load under rated voltage,input ourrent is measured in the morot teminals.Unit:A(Ampere)

3、Stall torque(Ts):Motor with rated voltage,maximum torque is measured when motor stop rotation under load,Unit:g.cm(gram.centimeter)

4、Stall current (Is):Motorwith rated voltage,current is measured when motor stop rotation under load,Unit:A(Ampere)

※It is recommended to operate the motor in stall position.It will result in de-magnetization or even damage to the motor.