Hybrid electric-power supplying system

摘要

In a plug-in operation, a first winding which functions as an armature winding for supplying an R-phase current of a three-phase rotary electric machine, a third winding, and a second winding are connected respectively to terminals for supplying R-phase, S-phase, and T-phase currents of a three-phase power source. Thus, the S-phase current and the T-phase current are interchanged as compared with in a normal operation. Thereby, reverse rotation of a field element is intentionally caused. A reverse-rotation prevention mechanism is provided in the field element.

主权项

1. A hybrid electric-power supply system comprising:
a three-phase rotary electric machine including an armature serving as a stator and a field element serving as a rotor, said armature having first to third windings corresponding to first to third different phases, respectively; a converter connected to said windings; a three-phase power source including first to third terminals for supplying currents corresponding to said first to third phases, respectively; and a connecting part for switching between a first state where said first to third windings are commonly connected to one another at the side thereof opposite to said converter, and a second state where said first terminal, said third terminal, and said second terminal are connected to said first winding, said second winding, and said third winding, respectively, wherein said first to third windings are not connected to one another within said three-phase rotary electric machine, in said first state, power is fed to said converter by a normal rotation of said rotor, and in said second state, power is fed from said three-phase power source to said converter via said first to third windings.