Method for positioning electric brush of single-wave winding permanent magnet direct current motor based on second pitches

• Main Authors: YANG TONG, NIU LIXIN, FU HONGWEI, XING LIHUA, ZHENG HONGBIN, CAI XIAOSHI
• Format: Patent
• Language: Chinese; English
• Published: 31.05.2017
• Subjects: CONVERSION OR DISTRIBUTION OF ELECTRIC POWER; DYNAMO-ELECTRIC MACHINES; ELECTRICITY; GENERATION

The invention discloses a method for positioning an electric brush of a single-wave winding permanent magnet direct current motor based on second pitches. The method comprises the following steps: 1, selecting a moment when rotor components of the single-wave winding permanent magnet direct current motor have largest potential and zero current, establishing a moment expanded view of stator magnetic steel, the rotor components and commutator segments at the moment, determining all the rotor components, of which the axes are superposed with the axis of each piece of stator magnetic steel, in the moment expanded view, connecting the starting end edge and the tail end edge of each rotor component in all the rotor components with the two commutator segments correspondingly; and 2, determining the center line of each second pitch, taking the center line position as the mounting position of one pole of the electric brush, and mounting the other pole of the electric pole by rotating 180-degree electrical angle positi