Three phase generator

A three-phase generator having an output voltage settable between a first voltage value and a second voltage value, the first voltage value being provided for supplying electrical system consumers of a motor vehicle and the second voltage value being greater than the first voltage value, comprising:

• a stator around whose teeth a three-phase winding is wound, whose winding phases are positioned in slots located between the teeth, each winding phase having a number of conductors per slot,
• wherein:
• if single-slot-per-phase windings are provided, the number of conductors per slot being selected as a function of the type of connection of the three-phase winding as follows:
• if the first voltage value is 14 V:
• delta connection:
• 5≦z≦10
• double delta connection:
• 5≦z≦10
• star connection:
• 2≦z≦8
• double star connection:
• 2≦z≦8, and
• if the first voltage value is 28 V:
• delta connection:
• 7≦z≦17
• double delta connection:
• 7≦z≦17
• star connection:
• 4≦z≦10
• double star connection:
• 4≦z≦10, and
• wherein:
• if two-slot-per-phase windings are provided, the number of conductors per slot being selected as a function of the type of connection of the three-phase winding as follows:
• if the first voltage value is 14 V:
• delta connection:
• 3≦z≦6
• double delta connection:
• 3≦z≦6.
• star connection:
• 1≦z≦5
• double star connection:
• 1≦z≦5, and
• if the first voltage value is 28 V:
• delta connection:
• 4≦z≦9
• double delta connection:
• 4≦z≦9
• star connection:
• 2≦z≦6.
• double star connection:
• 2≦z≦6.

An electrical system of a motor vehicle, comprising:

• a three-phase generator having an output voltage settable between a first voltage value and a second voltage value, the first voltage value being provided for supplying electrical system consumers of a motor vehicle and the second voltage value being greater than the first voltage value, including:
• a stator around whose teeth a three-phase winding is wound, whose winding phases are positioned in slots located between the teeth, each winding phase having a number of conductors per slot,
• wherein:
• if single-slot-per-phase windings are provided, the number of conductors per slot being selected as a function of the type of connection of the three-phase winding as follows:
• if the first voltage value is 14 V:
• delta connection:
• 5≦z≦10
• double delta connection:
• 5≦z≦10
• star connection:
• 2≦z≦8
• double star connection:
• 2≦z≦8, and
• if the first voltage value is 28 V:
• delta connection:
• 7≦z≦17
• double delta connection:
• 7≦z≦17
• star connection:
• 4≦z≦10
• double star connection:
• 4≦z≦10, and
• wherein:
• if two-slot-per-phase windings are provided, the number of conductors per slot being selected as a function of the type of connection of the three-phase winding as follows:
• if the first voltage value is 14 V:
• delta connection:
• 3≦z≦6
• double delta connection:
• 3≦z≦6
• star connection:
• 1≦z≦5
• double star connection:
• 1≦z≦5, and
• if the first voltage value is 28 V:
• delta connection:
• 4≦z≦9
• double delta connection:
• 4≦z≦9
• star connection:
• 2≦z≦6
• double star connection:
• 2≦z≦6;
• a first electrical system consumer, which is supplied with a rated voltage, which corresponds to the first voltage value, via a unit provided between the three-phase generator and the first electrical system consumer;
• and
• a second electrical system consumer, which is supplied with a second rated voltage, which is greater than the first rated voltage, directly from the three-phase generator.