Patent ID: 11967867
Assignee: DENSO CORPORATION
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC H  B  F | IPC B  H

Claim 17:
18. A rotating electric machine comprising:
a field element that includes a magnet portion that includes a plurality of magnetic poles of which polarities alternate in a circumferential direction;
an armature that includes an armature winding of multiple phases, either of the field element and the armature rotating together with a rotation shaft;
a power converter that is electrically connected to the armature winding, wherein the power converter includes a serial-connection body of an upper arm switch and a lower arm switch that is provided for each phase of the armature winding, a drive circuit that drives the upper arm switch and the lower arm switch, and a capacitor that is connected in parallel to each serial-connection body for each phase;
a plurality of switch modules that configure the upper arm switch and the lower arm switch, and include a semiconductor switching element that is a heat generating component that generates heat as a result of energization; and
a housing member that includes a cylindrical portion that is provided on a radially inner side of a magnetic circuit portion that includes the magnet portion and the armature winding, and to which the plurality of electrical components are disposed, wherein:
the cylindrical portion is provided with a coolant passage through which a coolant flows:
the plurality of switch modules are arranged in the housing member on a radially inner side of the cylindrical portion, in a circumferential direction along the cylindrical portion;
the switch module includes the semiconductor switching elements, the drive circuit, and the capacitor, and includes a cooling apparatus that cools the semiconductor switching elements and the capacitor by supplying the coolant from the coolant passage into a module interior; and
in the switch module, coolers that configure the cooling apparatus is arranged on both sides sandwiching the semiconductor switching element, the drive circuit is arranged on a side opposite the semiconductor switching element of one of the coolers on both sides of the switching element, and the capacitor is arranged on a side opposite the semiconductor switching element of the other cooler.