COOLING DEVICE FOR ELECTRONIC POWER UNIT INTEGRATED INTO REAR PART OF ALTERNATING CURRENT GENERATOR OR ALTERNATING CURRENT STARTER Russian patent published in 2008 - IPC H02K11/04 H02K19/36 

FIELD: electricity.

SUBSTANCE: substance of invention consists in the fact that suggested electric machine contains rear support (4), centralised and attached to driveshaft (2) installed at least on one rear support rotor (1), at that rear support (4) contains radial hatches (4a, 4d) for cooling medium release, mounted around rotor stator (3), at that stator contains inductance coil (7) containing windings forming electrical machine phases, power electronic circuit (15) connected with phase stator windings, heatsink bridge (16) containing first side on which power electronic circuit is mounted, and second side opposite to first side and faced to rear support, at that, the said second side forms longitudinal wall of passage (17) for cooling medium flow and other longitudinal side of this passage (17) is formed by retaining stator rear support (4). At that, according to invention, electronic power circuit (15) contains electronic elements in the form of bridge with power transistors and controls connected with control of the said bridge. The said electronic elements are performed on tracks (25) permanently connected with heat-sinking bridge (16), the second side of which contains cooling facilities (18) performed in passage (17) for cooling medium flow and intended for cooling of mentioned electronic elements.

EFFECT: improvement of reliability and conditions of cooling medium flow control under electronic power unit while increasing the strength of the latter.

20 cl, 12 dwg