Electric motors have been used to run countless pieces of machinery for the past century and a half. Over the years, equipment has changed and technology has grown, creating the need for a number of different types of electric motors. Unlike the engines found in most vehicles, electric motors use electro-magnetic fields to create energy, rather than the mechanical power generated by a transmission. Each type of motor works in a different way to produce energy, so different types are needed for different applications.
How Much Speed Do You Need?
In some applications, creating a steady and constant stream of energy is more important that acceleration and speed. However, if speed is necessary for your equipment, you may want to choose a brushless DC motor. These are capable of producing as much as 36,000 RPMs, although most commercially available brushless DC motors will only produce about 10,000 to 12,000 RPMs. If you need the ability to change the speed or torque of the motor, you may opt for a variable frequency drive AC induction motor instead, which can produce speeds comparable to the brushless DC motor. Universal motors are commonly used for small, low-torque appliances that need to produce speed.
How Much Power Do You Need?
Speed does not equal power by any means, so if your machinery requires a large amount of power to keep it going, you may consider a different type of electric motor. AC squirrel-cage induction motors are capable of moderate to high power production, and tend to be highly energy-efficient compared to DC motors. These are commonly used in industrial settings for equipment such as fans, blowers, and conveyors.
Do You Need to Start, Stop, and Change Speed or Power Frequently?
Applications which require a constant speed and a steady stream of power often use DC electric motors to run. These are usually found in mills and factories, where the equipment runs steadily for most of the day and is only shut off once or twice. Variable frequency AC motors are better for machinery that starts and stops often, or that needs more versatility in power management. These motors also require less maintenance than DC motors, and can increase the longevity of your equipment.
Additional Considerations
There are many subcategories of motors within the
AC And DC Types Of Electric Motors, which provide a variety of advantages and disadvantages for various applications. You will need to consider such things as the torque requirements of your equipment and the voltage the machinery can handle before making a final decision. The specialists at Five Star Electric are intimately familiar with the dozens of different types of electric motors, and may even be able to customize a motor for your specific needs. Make sure to consult an expert before you buy an electric motor, so that you know you are getting the most efficient and productive model for your machinery.
