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

Claim 21:
22. 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, the power converter converting electric power between a direct-current power supply and a phase winding of each phase of the armature winding;
a plurality of electrical modules that configure the power converter and include a heat generating component that generates heat as a result of energization being housed in a housing case; 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 modules are disposed, wherein:
the cylindrical portion is provided with a coolant passage through which a coolant flows;
the plurality of electrical modules are arranged in the housing member on a radially inner side of the cylindrical portion, in a circumferential direction along the cylindrical portion;
as the plurality of electrical modules, a plurality of switch modules that include a switching element that controls an energization direction of a current that flows to the phase winding of each phase from the direct-current power supply by a switching operation, and a plurality of capacitor modules that include a smoothing capacitor that suppresses high-frequency vibrations that are generated in the current as a result of the switching operation are provided;
a positive-electrode-side conductor that is connected to a positive-electrode side of the direct-current power supply and a negative-electrode-side conductor that is connected to a negative-electrode side of the direct-current power supply are provided;
the switching element and the smoothing capacitor are connected in parallel between the positive-electrode-side conductor and the negative-electrode-side conductor;
the plurality of switch modules and the plurality of capacitor modules are arranged in an annular shape;
the positive-electrode-side conductor and the negative-electrode-side conductor form an annular shape and are connected to a terminal of each module in an order of array of the switch modules and the capacitor modules in the circumferential direction; and
the capacitor modules are arranged on both sides of the switch module, and capacitances of the smoothing capacitors included in the capacitor modules arranged on both sides thereof are equal to each other.