直流电动机与直流发电机
基本的内部结构f the DC motor and DC generator are the same and works on the Faraday’s laws of induction. However, the way DC motor operates is different to the way DC generator operators. This article takes closer look at the structure of DC motor and generator and how both operate and finally, highlights the difference between DC motor and generator.
有关直流发电机的更多信息
发电机有两个绕组组件;一个是电枢,它通过电磁诱导产生电力,另一个是磁场成分,它会产生静态磁场。当电枢相对于磁场移动时,由于周围的磁通变化而引起电流。电流称为诱导电流和驱动其被称为电动力的电压。通过旋转一个组件相对于另一个组件,获得了此过程所需的重复相对运动。旋转部分称为转子,固定部分称为定子。转子被设计为电枢,场分量是定子。随着转子的移动,通量随着转子和定子的相对位置而变化,其中磁通量附着在电枢上逐渐变化并改变极性。
电枢的接触端子的配置略有变化,可以使不会改变极性的输出。这样的发电机被称为直流发电机。换向器(添加到电枢触点的附加组件)可确保电路中电流的极性会改变电枢的每个半循环。
The output voltage of the armature becomes a sinusoidal waveform, because of the repetitive change in polarity of the field relative to the armature. The commutator allows change of the contact terminals of the armature to the external circuit. Brushes are attached to the armature contact terminals and slip rings are used to keep the electrical connection between the armature and the external circuit. When the polarity of the armature current changes, it is countered by changing the contact with the other slip ring, which allows the current to flow in the same direction.
因此,通过外部电路的电流是不会随时间变化极性的电流,因此名称直流电。但是,电流是变化的,但是被视为脉冲。为了应对这种连锁反应的效果电压和当前调节。
有关DC电机的更多信息
直流电动机的主要部分与发电机相似。转子是旋转的组件,定子是固定的组件。两者都有线圈绕组来创建磁场,并且磁场的排斥会产生转子移动。电流通过滑环传递到转子,或使用永久磁铁。转子的动能传递到连接到转子的轴,并产生的扭矩作为机械的驱动力。
使用的直流电动机有两种类型,它们是拉丝直流电动机和无刷直流电动机。直流发电机和直流电动机操作背后的基本物理原理是相同的。
In brushed motors, brushes are used to maintain electrical connectivity with the rotor winding, and internal commutation changes the polarities of the electromagnet to keep the rotational motion sustained. In DC motors, permanent or electro magnets are used as stators. In a practical DC motor, the armature winding consists of a number of coils in slots, each extending for 1/p of the rotor area for p poles. In small motors, the number of coils may be as low as six while, in large motors, it may be as large as 300. The coils are all connected in series, and each junction is connected to a commutator bar. All coils under the poles contribute to torque production.
在小型直流电动机中,绕组的数量较低,并且将两个永久磁铁用作定子。当需要较高的扭矩时,绕组和磁铁强度的数量会增加。
第二种是无刷电动机,它具有永久磁铁,因为转子和电磁体位于转子中。高功率晶体管充电并驱动电磁体。
What is the difference between DC Motor and DC Generator?
•电动机和发电机的基本内部结构是相同的,并且在法拉第的归纳定律上起作用。
•发电机具有机械能输入,并在电动机具有直流电流输入和机械输出时给出直流电流输出。
•两者都使用换向器机制。直流电动机使用换向器来改变磁场的极性,而直流发电机则使用它们来应对极化的效果,并将从电枢的输出转换为直流信号。
•这些可以被视为以两种不同方式操作的同一设备。
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