Electric Drive

Electric Drive

Unlike conventional air-conditioning compressors, the scroll compressor used here does not run with the combustion engine, but is instead only operated via an electric motor as required. In other words, the compressor only produces a power loss when cooling power is actually to be produced. This means:
- Reduced load on the vehicle electrical system electronics due to low current consumption
- Less wear on the air-conditioning compressor

This results in additional fuel consumption savings.







The scroll compressor is supplied with a voltage of 288 V DC from the power electronics of the high-voltage system via a high-voltage cable to drive the integrated electric motor.

The energy required to drive the brushless direct-current motor (Hybrid Technology, Principles) is converted by the inverter from DC voltage (288 V) to a 3-phase AC voltage (alternating voltage) of 280 V. The three-phase motor is supplied with power via three phases and drives the scroll compressor wheel, which compresses the refrigerant.

The driver electronics are, like the inverter, integrated in the upper section of the compressor housing. They are supplied with a 12 V power supply, which is switched via terminal 15, and receive commands from the air-conditioning control unit via the MMI bus.

The air-conditioning compressor is diagnosable.