VS - Electrical Systems From Stop-Start to Hybridization

System overview The first generation of StARS combines a machine, a power controller and a 3 phase power harness. StARS is a 14V machine, it is compatible with conventional board-net voltages.

The StARS machine In the first generation of StARS the machine embeds a very tiny amount of electronics, the essential being in the external power controller. Similarly to an alternator structure the StARS rotating machines is a synchronous machine with a claw rotor. The machine is composed of: ●● A poly-V pulley ●● A rotor ●● A rotor angular position sensor ●● A stator ●● A brush holder

StARS - the first generation of Valeo starter alternator system

The power controller reacts according to numerous sensors and commands conditions from the vehicle; one connector is dedicated to power stimulus for the machine and one to control signals. StARS in the electrical system Can Bus

●● A fan system ●● Ball bearings ●● Connectives systems (3 phase power and control signals) ●● Housing and brackets

StARS in the electrical system Battery

Can Bus

3 phases cable

Engine Management unit

StARS power controller

StARS machine

Airbag Management unit

(1)

Battery

ESP Management unit

3 phases cable

StARS machine Control & status signals

Control & status signals

Engine Management unit Body Controller unit

StARS power controller

Front Bracket

Airbag Management unit

(1)

Interpole Magnet

Lin Bus

ESP Management unit

Control & status signals

Control & status signals

Body Controller unit

Stator Coils

(1) Lin Bus on some StARS applications

Lin Bus

Stator Iron Stack

Pulley

(1) Lin Bus on some StARS applications

Fan

Collector Rings

Rear Bracket

Front Fan

Brushes

Cover

Rotor Bobbin

Claw Pole

Magnetic Target

For synchronization purpose, the StARS machine embeds a rotor angular position sensor, allowing the power unit to precisely control starter mode operations.

Hall Effects Sensors

3 Phase Terminal

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