VS - Electrical Systems From Stop-Start to Hybridization

PHASE 1

PHASE 1 PHASE 1

PHASE 1

The position sensor consists in three devices (H1, H2, H3), they are each 120° shifted and require a high positioning accuracy for the machine to deliver the appropriate torque output with minimized ripple. The MOSFET half bridges are activated in multiple commutation sequences to create a 360° rotation. ●● Stator phases are excited two by two in a 360° sequence, triggering a rotating field ●● The rotor aligns to the stator magnetic field for each new sequence generating torque ●● The torque amplitude varies according to the position of the rotor, it is higher at each half bridges commutation and stator/rotor alignment ●● The machine output torque is maximized thanks to advanced control timings and communications overlapping on the MOSFET half bridges. In StARS, the MOSFET bridge is capable of delivering a 600A current, generating enough torque to drive the internal combustion engine immediately and at higher revs than a conventional starter.

H2

H2

H2

Hall effect position magnetic sensor Hall effect position magnetic sensor Hall effect position magnetic sensor

Hall effect positi n magnetic sensor

H2

H1

H1

H1

H1

H3

H3

H3

H3

PHASE 3

PHASE 3 PHASE 3

PHASE 3

PHASE 2

PHASE 2 PHASE 2

PHASE 2

Three position sensors, 120° shifted

Maximum torque

Output torque

Maximum torque

Output torque

PHASE 1

PHASE 1

PHASE 1

PHASE 1

PHASE 1

PHASE 1

PHASE 3

PHASE 2

PHASE 3

PHASE 2

PHASE 3

PHASE 2

PHAS

Stator phase commutation

PHASE 3

PHASE 2

PHASE 3

PHASE 2

PHASE 3

PHASE 2

Stator phase commutation

20