Yuichi Shibukawa - Yokohama-shi,
Robert Donald Lorenz - Madison WI,
Natee Limsuwan - Madison WI,
WISCONSIN ALUMNI RESEARCH FOUNDATION - Madison WI
NISSAN MOTOR CO., LTD. - Yokohama, Kanagawa
A rotary electric machine rotor is provided with a rotor shaft, a rotor core, and a group of permanent magnets. The rotor core includes a group of flux barriers arranged at intervals. At least one of the flux barriers includes at least one bridge joining an inner edge and an outer edge of that flux barriers. The permanent magnets are arranged at the rotor core between the flux barriers as viewed in the cross sectional plane.