Day: November 25, 2023

Analysis of Pole Pairs in Brushless Motors

The pole pairs of a brushless motor are determined by detecting changes in the magnetic field of the rotor. The rotor magnetic steel is arranged alternately as N-pole and S-pole. When the Hall sensors of the brushless motor detect a transition from N-pole to S-pole or from S-pole to N-pole, the Hall’s output undergoes corresponding high and low level changes, indicating a change in the rotor’s position