Rotating electric machine system, and combined power system equipped therewith

A combined power system comprising a rotating electric machine system and an internal combustion engine,

• wherein the rotating electric machine system comprises:
• a rotating electric machine including a rotor and a stator;
• a rotating electric machine housing in which the rotating electric machine is accommodated;
• a partition wall member configured to divide a hollow interior portion into a rotor chamber accommodating the rotor and a housing internal oil passage accommodating the stator,
• a first bearing and a second bearing that are interposed between the rotating electric machine housing and the rotating shaft;
• an oil circulation supply device configured to circulate and supply a lubricating oil to the first bearing, the second bearing and a housing internal oil passage;
• and
• a gas supplying device configured to supply a gas to the first bearing and the second bearing, and
• wherein the rotor includes a rotating shaft and a permanent magnet provided on the rotating shaft;
• the rotating electric machine housing includes a first insertion hole and a second insertion hole communicating the rotor chamber, in an interior of the rotating electric machine housing, wherein the first insertion hole is configured to accommodate the first bearing, and the second insertion hole is configured to accommodate the second bearing;
• the oil circulation supply device includes a first oil supply line, a second oil supply line, a first oil recovery line, and a second oil recovery line;
• the oil circulation supply device is configured to supply the lubricating oil to the first bearing and the second bearing via the first oil supply line, and supply the lubricating oil toward the housing internal oil passage via the second oil supply line;
• the gas supplied to the first bearing and the second bearing simultaneously with the lubricating oil supplied to the first bearing and the second bearing;
• the oil circulation supply device is configured to recover, via the first oil recovery line, the lubricating oil and the gas supplied from the rotor chamber to the first bearing and the second bearing via the first insertion hole and the second insertion hole, and recover, via the second oil recovery line, the lubricating oil and the gas that have flowed through the housing internal oil passage;
• the gas flowing in the rotor chamber flows in a first direction from the first bearing toward the second bearing, and the lubricating oil flowing through the housing internal oil passage flows in a second direction from the second bearing to the first bearing;
• and
• the internal combustion engine includes an output shaft configured to rotate integrally with the rotating shaft.