White Paper

The Nuts And Bolts Of Brushless DC Motors

Source: Canon USA, Inc. Optoelectronic Components

Increasingly popular, a brushless DC (BLDC) motor is a permanent magnet synchronous electric motor that runs on DC power. BLDC motors operate similarly to conventional DC motors. When a current-carrying conductor is inserted into a magnetic field, its permanent magnet experiences an equal and opposite force. The conductor is stationary while the magnet moves. In place of brushes, BLDC motors use a step motor controller to create rotation and convert electrical energy into mechanical energy.

Here is an overview of BLDC motors, their basic components, how they operate, how they differ and where they are used. Brushless motors are unique, complex, and arguably not commodity products.

Canon USA, Inc. Optoelectronic Components