BMW 3 Owners & Service Manuals

BMW 3: Electrical Machine Electronics

BMW 3 Series G20 (2018-2025) Training manual / Electrical Machine Electronics

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 Introduction

The Electrical Machine Electronics (EME) is primarily used as control electronics for the electrical machine. It is also responsible for converting the direct current voltage from the high-voltage b

 Connections

The connections at the Electrical Machine Electronics can be divided into four categories: Low-voltage connections High-voltage connections Connection for potential compensation line Connections

 Low-voltage connections

In the low-voltage connector at the Electrical Machine Electronics the following lines and signals are combined: Terminal 30 from the hybrid power distribution box Terminal 30 from the f

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 Voltage supply for other high-voltage consumers

The Electrical Machine Electronics supplies voltage not only to the electrical machine. The convenience charging electronics are directly connected with the Electrical Machine Electronics and ensure the voltage supply at high-voltage level to the electric A/C compressor and electrical heating. H

 Engine Electrical System

Digital Motor Electronics (DME) DME 8 control unit The Digital Motor Electronics (DME) is the computing and switching center. Sensors on the engine and the vehicle deliver the input signals and actuators implement the commands. The Digital Motor Electronics (DME) calculates the corresponding acti

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