BMW 3: Electrical Machine Electronics
BMW 3 Series G20 (2018-2026) 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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Telephone functions
General information
Mobile phones can be connected to the vehicle
via Bluetooth, see Owner's Manual for the vehicle.
At high temperatures, the charge function of the
mobile phone can be limited where appropriate
and functions are no longer executed.
Do not operate a mobile phone that is connected
High-voltage power management
The power management for the high-voltage vehicle electrical system includes
two subfunctions: one
for driving and one for charging mode.
In driving mode, the energy flows from the high-voltage battery unit to the
high-voltage consumers
and the energy flows during energy recovery to the high-volt
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