BMW 3: Electrical Machine Electronics
BMW 3 Series G20 (2018-2025) Training manual / Electrical Machine Electronics
- Introduction
- Connections
- Low-voltage connections
- High-voltage connections
- High-voltage cables
- Removing the flat high-voltage connector
- Removing the round high-voltage connector
- Connection for potential compensation lines
- Tasks
- DC/DC converter
- Power electronics for activation of the electrical machine
- High-voltage power management
- Voltage supply for other high-voltage consumers
- Cooling
- Antifreeze and corrosion inhibitor
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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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Equipotential bonding
The low-resistance connection between the housing of the high-voltage battery
unit and ground is
a crucial prerequisite for the fault-free function of the integrated isolation
monitoring. This is why it
is important to observe the correct tightening torque for all assembly screws.
It is also impo
Data protection
Data transfer
Concept
The vehicle offers different services, whose use
requires a data transfer to BMW or a service provider.
The data transfer can be deactivated for
some services.
General information
When the data transfer is deactivated, the respective
service cannot be used.
Only make these se
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