Self-synchronous electrical motor
First Claim
1. A self-synchronous electrical motor comprising a rotor (E5), a stator possessing at least one set of four windings E1, E2, E3, E4 offset by 90 electrical degrees with respect to one another, a first electronic switch (K) connected to a stator winding, (E2, E4,) and activated by a chopper circuit (CC) at high frequency to control a mean current Ist) in the stator winding (E2, E4), and a sensor (s) of angular position of the rotor (E5) alto activate the chopper circuit (CC), a rotating mechanical commutator (BT) driven by the rotor (E5), the commutator (BT) being connected to a first end of each of the windings (E1, E2, E3, E41), second end (P1) of two of the windings (E1, E3) being connected to a power supply source (Vp), a second end (P2) of the other two windings (E2, E4) being connected to the first electronic switch (K) so as to make the current given by the source (Vp) pass successively into two series-connected windings taken from among the four windings, these two windings being offset by 90 electrical degrees.
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Accused Products
Abstract
A self-synchronous electrical motor comprises one rotor, one stator formed by at least one set of four stator windings, at least one electronic switch connected to a stator winding to control the current in the stator winding and a sensor of the angular position of the rotor to control the working of the switch. It also has a rotating commutator device, driven by the rotor, to shunt a current coming from a power supply source into windings selected as a function of the position of the rotor. The commutator device is connected to a first end of each of the windings, the second end of two of the windings being connected to the power supply source and the second end of the other two windings being connected to the electronic switch. Application notably to electrical traction systems for automobiles.
36 Citations
10 Claims
- 1. A self-synchronous electrical motor comprising a rotor (E5), a stator possessing at least one set of four windings E1, E2, E3, E4 offset by 90 electrical degrees with respect to one another, a first electronic switch (K) connected to a stator winding, (E2, E4,) and activated by a chopper circuit (CC) at high frequency to control a mean current Ist) in the stator winding (E2, E4), and a sensor (s) of angular position of the rotor (E5) alto activate the chopper circuit (CC), a rotating mechanical commutator (BT) driven by the rotor (E5), the commutator (BT) being connected to a first end of each of the windings (E1, E2, E3, E41), second end (P1) of two of the windings (E1, E3) being connected to a power supply source (Vp), a second end (P2) of the other two windings (E2, E4) being connected to the first electronic switch (K) so as to make the current given by the source (Vp) pass successively into two series-connected windings taken from among the four windings, these two windings being offset by 90 electrical degrees.
Specification