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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Anti-lock Braking System
ABS
ABS prevents locking of the wheels during braking.
The vehicle maintains its steering power even
during full brake applications, thus increasing active
safety.
ABS is operational every time you start the engine.
Brake assistant
When you apply the brakes rapidly, this system
automatically boosts th
Tasks
The Electrical Machine Electronics is made up internally of three
subcomponents:
Bidirectional DC/AC converter
Unidirectional DC/DC converter
EME control unit
The Electrical Machine Electronics performs the following functions using the
subcomponents
mentioned:
Torque restriction of the dri
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