Delphi has a long history of developing automotive electric compressor products, which can be traced back to 1960. A high-voltage (360 V) 4.2 kW SPM brushless motor was developed in 1990 with a separate three-phase sensorless inverter drive. Popular between 1998 and 2001 were controllers that used air or liquid cooling alone. These controllers were mainly used in 28 cc compressor systems. Delphi believes that the latest trends in the industry are moving toward integrated electric compressors, integrating scroll compressors, motors and drive electronics into one unit.

The Delphi product to be introduced below is applied to electric trucks.

In the above picture, we can find that Delphi's compressor products place the controller on the motor casing and mount it coaxially. The benefits of this installation are:

Cancel the external AC power cable;

Eliminate the separate cooling circuit of the power supply to further compress the product space;

Dual use components, ie compressor housing and controller housing, are reused;

Reduce the weight and volume of the compressor system.

Through the two compressor products of Denso and Delphi, we can roughly find out:

Through the deep integration of the motor and controller, the controller's separate cooling unit can be removed to avoid this loss of power, thus improving the overall system efficiency. At the same time, deep integration reduces cable usage and reduces power loss on the line. Moreover, by compacting the system to further compress the space and reduce the weight and volume of the system, the compact system can also enhance the EMI/EMC performance of the system.

Reprinted from the network