Abstract: A rotary electric machine of the embodiment includes a stator having a cylindrical stator core and a coil attached to the stator core, and a rotor disposed on a radially inward side of the stator, in which the rotor includes a rotor core having a rotor internal flow path through which a refrigerant can flow by axial cooling, and an end surface plate disposed at an end portion in an axial direction of the rotor core, the end surface plate includes a refrigerant flow hole which communicates with the rotor internal flow path, and a refrigerant passage groove which connects together the refrigerant flow hole and an outer circumferential edge of the end surface plate, and a radially outer groove width is equal to or smaller than a radially inner groove width in the refrigerant passage groove when viewed from the axial direction.

Abstract: A rotating electrical machine includes a rotor and a stator. A first end plate includes a first refrigerant discharge hole which communicates with a second refrigerant flow path hole and supplies refrigerant to a first coil end and a first groove portion which supplies the refrigerant supplied from a refrigerant flow path to a first refrigerant flow path hole and does not supply the refrigerant to the first refrigerant discharge hole and the second refrigerant flow path hole. A second end plate includes a second refrigerant discharge hole which supplies the refrigerant to a second coil end and a second groove portion which supplies the refrigerant supplied from the first refrigerant flow path hole to the second refrigerant flow path hole and supplies the refrigerant to the second refrigerant discharge hole.

Abstract: A rotary electric machine unit includes: a first rotary electric machine having a first rotation axis extending in a horizontal direction; a second rotary electric machine having a second rotation axis extending in parallel with the first rotation axis and positioned lower than the first rotation axis; a first rotation speed detection device arranged at a position overlapping with the first rotary electric machine as viewed from an axial direction; a second rotation speed detection device arranged at a position overlapping with the second rotary electric machine as viewed from the axial direction; and a refrigerant supply portion configured to supply refrigerant to the first rotary electric machine. The first rotation speed detection device and the second rotation speed detection device are arranged on one axial end side of the first rotary electric machine and the second rotary electric machine in the axial direction.

Abstract: A rotating electrical machine includes a rotor and a stator. A first end plate includes a first refrigerant discharge hole which communicates with a second refrigerant flow path hole and supplies refrigerant to a first coil end and a first groove portion which supplies the refrigerant supplied from a refrigerant flow path to a first refrigerant flow path hole and does not supply the refrigerant to the first refrigerant discharge hole and the second refrigerant flow path hole.

Abstract: A rotary electric machine of the embodiment includes a stator having a cylindrical stator core and a coil attached to the stator core, and a rotor disposed on a radially inward side of the stator, in which the rotor includes a rotor core having a rotor internal flow path through which a refrigerant can flow by axial cooling, and an end surface plate disposed at an end portion in an axial direction of the rotor core, the end surface plate includes a refrigerant flow hole which communicates with the rotor internal flow path, and a refrigerant passage groove which connects together the refrigerant flow hole and an outer circumferential edge of the end surface plate, and a radially outer groove width is equal to or smaller than a radially inner groove width in the refrigerant passage groove when viewed from the axial direction.