Synchronous Motors

Synchronous motors are a common form of electric motor, powered by alternating current. We have hundreds for you to choose from here at RS and we are the premier authorized distributor of components in North America, so you can rest assured we’ll be able to deliver the parts that are suited to your project.

We stock synchronous motors from a number of leading manufacturers including Siemens, Schneider Electric and Crouzet and you can be confident that all parts conform to the very highest industry standards.

Read on to find out more about synchronous motors, the different types, which applications they are most suited for and why you can rely on RS to provide the components you need.

What are synchronous motors and how do they work?

Like all electric motors, synchronous motors convert electrical energy into mechanical energy. To achieve this, the shaft of the motor rotates at a rate that is synchronized with the frequency of the alternating current that is being supplied. The magnetic field created helps to generate torque, which powers the movement of the application.

Synchronous motors are different from induction motors in that they rotate at the same speed as the line frequency. In induction motors, however, the rotor’s magnetic field rotates slightly slower than that of the stator.

What are the different types of synchronous motors?

There are a few different types of synchronous motors and broadly speaking they can be categorized into reluctance, permanent-magnet and hysteresis designs.

• Reluctance motors feature teeth on the rotor, which lock in and allow it to rotate at the same speed as the magnetic field.
• As the name suggests, permanent-magnet synchronous motors have magnets embedded within the rotor that create an ever-present magnetic field. Direct drive motors are a form of permanent-magnet synchronous motors. They feature fewer moving parts and as a result increase the efficiency and lifespan of the component.
• Hysteresis motors, meanwhile, include a smooth rotor of high-carbon steel which can be magnetized and de-magnetized. Hysteresis synchronous motors tend to be used in applications where power ratings are low.

Where are synchronous motors used?

Direct drive motors and other synchronous motors are most commonly found in applications where precision and accuracy of timing are essential. Some everyday examples of these include analog clocks and watches, tape recorders and timers.

Why choose RS for your synchronous motors?

Whether you come to RS for synchronous motors or any other components, rest assured that we only stock products of the highest quality that all meet industry standards. We have synchronous motors from the likes of Siemens, Nidec Motors and Schneider Electric and as the leading authorized distributor in North America, you can rely on us to deliver what you need, when you need it.

For direct drive motors and other associated products, look no further than RS. Should you have any questions, please feel free to contact us and we’ll do everything we can to point you in the right direction. Not only that, but you can also find plenty of useful tips and advice in our expert hub.