How do I choose an electric motor?

How do I choose an electric motor?

To determine the technical specifications, it will be necessary to determine the power, torque and speed of the motor. In order to determine the size, you must know how much space the motor will take up and how it is mounted (i.e.how it will be fixed in the system).

Which type of electrical motor is suitable for constant speed drive application?

Both ac and dc motors are suitable for constant speed applications. DC motors provide full torque at zero speed and have a large installed base. AC motors are also a good choice because they have a high power factor and require little maintenance.

How do I choose an electric motor size?

The key to motor selection lies in sizing up the loads and inertia the motor will see. First, find the needed velocity and torque. Acceleration needs come from the amount of time needed to reach final velocity. There are different ways of selecting electric motors for specific applications.

Which is most preferred motor for electric drives?

The BLDC motors are the most preferred motors for the electric vehicle application due to its traction characteristics. You can learn more about BLDC motors by comparing it with normal brushed motor. BLDC motors further have two types: i.

How do you select a motor with torque?

To calculate load torque, multiply the force (F) by the distance away from the rotational axis, which is the radius of the pulley (r). If the mass of the load (blue box) is 20 Newtons, and the radius of the pulley is 5 cm away, then the required torque for the application is 20 N x 0.05 m = 1 Nm.

Can electric motors run continuously?

General-purpose motors with standard dimensions and characteristics provide convenient mechanical power for industrial use. An electric motor is generally designed for continuous rotation, or for linear movement over a significant distance compared to its size.

What should be considered when selecting a motor?

The size of the load, the required speed, and acceleration/deceleration—particularly if it’s fast and/or frequent—will define the torque and horsepower that is required. Requirements for controlling motor speed and position also need to be considered. There are four types of industrial automation motor loads: Positional control or torque control.

What kind of control does a constant speed motor use?

In a constant speed application, a motor often runs at an approximate speed with little or no concern about acceleration and deceleration ramps. This type of application is usually run using across-the-line on/off control.

How to choose the best motor for your application?

The most critical consideration for selecting a motor in these cases is to choose one whose speed-torque curve exceeds the load torque curve. Loads from centrifugal pumps, fans, blowers, compressors with unloaders, and similar equipment tend to be variable over time. In choosing a motor for these conditions, consider the highest continuous load

How does reducing the speed of an industrial motor improve efficiency?

Reducing the industrial motor speed in application, such as fans and centrifugal pumps often improves efficiency by matching the power consumed to the load instead of running at full speed and throttling or dampening the output. These are very important considerations for conveying applications, such as bottling lines.