An inverter-driven rotating electric machine, the system, the bearing and the end bracket

In the present invention, even for dv / dt is high inverter pulse voltage, to suppress the occurrence of longitudinal currents cause electrolytic corrosion of the bearing with generation and to this axis voltage, high electrolytic corrosion of the bearing does not occur, the high and to provide an efficient inverter driving the rotating electric machine and the system. An object of the present invention can be realized by the following method. That is, the mechanical support bearing for supporting the shaft of the rotor, and an electric discharge bearing for discharging the voltage generated in the rotor axis, respectively one or more, than the mechanical support bearing the electrical discharge bearing inner ring - between the outer ring It can be realized by the rotary electric machine and the electric rotating machine system breakdown voltage using low bearing. Reliable electrolytic corrosion of the bearing does not occur even for the inverter pulse voltage according to the present invention, it is possible to provide highly efficient rotary electric machine, and its system.