Both AC and DC motors turn electrical energy into movement, but they do this in different ways. DC motors use small components called brushes to physically switch between different sets of electrical windings as the motor spins. Since only some of the windings are used at a time, DC motors aren’t as power dense. This means they’re generally less efficient for high-performance use.
To get smooth, responsive performance across different speeds, modern motors use advanced power electronics. These systems control AC motors by activating the windings in a specific sequence. No physical contact is needed between the moving and stationary parts, which makes AC motors more compact, more efficient and maintenance-free.