ELECTRIC ROTATING MACHINE

摘要

A power module composite includes a power module (34) in which switching devices (32) included in an electric-power conversion circuit are molded, a driver module (37) that includes a control circuit (35) for controlling the switching devices (32) and is molded, a housing (39) containing the power module (34) and the driver module (37), and a heat sink (38) that is fixed to the housing (39) and refrigerates the switching devices (32); the power module 34 and the driver module 37 are mounted in that order on the heat sink (38) in such a way as to be superimposed on each other.

主权项

1. An electric rotating machine comprising:
a rotor fixed on the rotor shaft; a stator that is disposed in such a way as to face the rotor and is provided with a stator winding; a case that pivotably supports the rotor shaft and holds the stator; and a control apparatus that is fixed to the case and has a power module composite provided with an electric-power conversion circuit that performs electric-power conversion between the stator winding and an external DC power source and the control apparatus having a control circuit unit that controls the electric-power conversion circuit, wherein the electric-power conversion circuit provided in the power module composite is controlled by the control circuit unit so as to convert DC power from an external DC power source into AC power and supply the AC power to the stator winding or so as to convert AC power generated across the stator winding into DC power and supply the DC power to the DC power source, wherein the power module composite has a power module in which switching devices included in the electric-power conversion circuit are molded with an insulating resin, a driver module that is molded with an insulating resin and includes a control circuit for controlling the switching devices, a housing containing the power module and the driver module, and a heat sink that is mounted in the housing and refrigerates the switching devices, and wherein the power module and the driver module are mounted on the heat sink in such a way that the driver module is superimposed on the power module that is closer to the heat sink than the driver module is.