Patent ID: 8089252

Claim:
An armature winding switch module comprising: a neutral point; a primary phase line point; a secondary phase line point; a tertiary phase line point; a first connection set connected between the neutral point and the primary phase line point, adapted to connect multiple first armature windings of a power supply device and having multiple first terminals wherein each two first terminals are respectively connected to two ends of a corresponding first armature winding; and multiple first contacts connected among the first terminals; a second connection set connected between the neutral point and the secondary phase line point, adapted to connect multiple second armature windings of said power supply device and having multiple second terminals wherein each two second terminals are connected to two ends of a corresponding second armature winding; and multiple second contacts connected among the second terminals; and a third connection set connected between the neutral point and the tertiary phase line point, adapted to connect multiple third armature windings of the power supply device and having multiple third terminals wherein each two third terminals are connected to two ends of a corresponding third armature windings; multiple third contacts connected among the third terminals; and the first, second and third contacts operating together to synchronously and respectively connect the first, second and third armature windings in series or in parallel.