Working with motors does not need to be too complicated. However, knowing the basics about motors is important especially during operation or when the time comes that they need repair or replacement.
Electric motors convert electrical energy into mechanical energy. They are usually classified into two main types – AC motors and DC motors. Let’s take a closer look at each type and how they can be applied in various industries.
What is an AC motor?
AC motors are motors powered by alternating current. This kind of motor has two basic parts called the stator and the rotor. The stator is the outer stationary portion with coils supplied with alternating current. The rotor is the inside part that is attached to the motor shaft.
The two main types of AC motors are the induction and synchronous motor. In the induction, also called asynchronous motor, there is a difference in speed between the stator’s rotating magnetic field and the rotor shaft speed – what is usually referred to as slip. The slip induces rotor current in the rotor AC winding. Induction motors can be used for automobiles, kitchen appliances, boiler pumps and many other applications.
On the other hand, synchronous motors do not rely on slip-induction for operation. This motor is used in electromechanical robots, meter pumps, speed controllers, high-precision drill machines and other devices where accuracy is important.
What is a DC motor?
A DC motor converts direct electric current into mechanical energy. They were the first form motor widely used. The most common types of DC motors rely on forces produced by magnetic fields.
Much like AC motors, DC motors have two parts – the stator, which is also its stationary part, and the armature, which is its rotating part. The armature coil is connected to the DC supply.
The armature coil consists of the commutator and brushes. The commutator lets each coil to be powered and connects them with the external power supply through the brushes.
DC motors are used in jobs where constant speed applications are needed, including in drilling machines, centrifugal pumps and conveyors.
Maintenance of AC and DC motors
Understanding the basics of electrical motors is just the beginning. Because of their wide application in various industries, making sure that they work perfectly and are well maintained is important.
Schedule regular maintenance checks up on your motor to ensure their performance. However, this should only be done by expert technicians. Tinkering with the motor without adequate experience might damage it as well as being dangerous if you are not trained to fix motors.
Quality Electric Sales and Service has more than 55 years of experience in the motor repair industry. Our team of technicians has expertise in maintenance of AC and DC motors, including rewinding and repair services. From diagnosis to actual repair, you can rely on our team to give you the quality service you deserve.
Our repair procedures comply with the toughest standards. Our motor rewinding services restore a wide range of AC and DC motors, including high voltage motors, traction motors, and variable speed motors, among others.
Contact us today for more information about our services.