Patent ID: 6429562
Filing Date: 2002-08-06
Classification: H02K,H02P

Abstract:
A motor/generator comprising a first motor/generator unit comprising a first rotor provided with a magnet and a first stator provided with a plurality of coils facing the first rotor, and a second motor/generator unit comprising a second rotor provided with a magnet and a second stator provided with a plurality of coils facing the second rotor, wherein:providing that the number of coils in the first stator is S1, the number of pairs of magnetic poles in the magnet of the first rotor is P1, and the number of phases in a first alternating current which drives the first rotor through the coils of the first stator is M1, the coils of the first stator are divided into groups of the number of K1 satisfying the equation K1=S1/M1, the coils in each group of the first stator being mutually connected by any one of a Y connection and a delta connection; providing that the number of coils in the second stator is S2, the number of pairs of magnetic poles in the magnet of the second rotor is P2, and the number of phases in a second alternating current which drives the second rotor through the coils of the second stator is M2, the coils of the second stator are divided into groups of the number of K2 satisfying the equation K2=S2/M2, the coils in each group of the second stator being mutually connected by any one of a Y connection and a delta connection; and providing that the groups of the first stator is numbered from 1 to K1/A, A being a natural number, the coils in each group of the first stator is numbered from 1 to M1, the groups of the second stator is numbered from 1 to K2/B, B being a natural number, the coils in each group of the second stator is numbered from 1 to M2, and i and j are natural numbers, a coil with a coil number j in a group number i of the first stator and a coil of a coil number i in a group number j of the second stator are connected to each other.