Rotary electric machine unit having rotary electric machine with cooling part and electric power conversion device
摘要
說明書
The inverter 7 is connected to the DC power supply 2 via the smoothing capacitor C2. The inverter 7 has three sets of the parallel circuits 11 descried above. That is, the inverter 7 has the upper and lower arm circuits 10 for three phases. The connection point of the upper and lower arm circuit 10 of the V phase is connected to a U phase winding provided in a stator of the motor generator 3. Similarly, the connection point of the upper and lower arm circuit 10 of the V phase is connected to a V phase winding of the motor generator 3. The connection point of the upper and lower arm circuit 10 of the W phase is connected to a W phase winding of the motor generator 3. The connection point of the upper and lower arm circuit 10 of each phase is connected to the winding of the corresponding phase via an output wiring 15 provided for each phase.
In the electric power conversion device 5, the voltage of the DC power supply 2 is applied directly to the inverter 7 without being boosted. In the electric power conversion device 5, a converter may be provided as a DC-DC conversion unit that converts the DC voltage into a DC voltage having a different value. Examples of this converter include a boost converter that is provided between the DC power supply 2 and the inverter 7. In the power conversion device 5 provided with the boost converter, the VH line 12H on the high potential side has, for example, 650V.
