Brushless dc electric motor and associated vehicle
AssigneeValeo Systèmes d'Essuyage
InventorJose Luis Herrada
Life of this patent
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Abstract
The present invention relates to a brushless dc electric motor (1) comprising: a rotor (3) comprising at least two pairs of poles, a stator (5) having a plurality of teeth (D1, D2) around which windings (B1, B2, B3, B′1, B′2, B′3) forming coils for electromagnetic excitation of the rotor (3) are wound, wherein the stator (5) comprises a first type of tooth (D1) covering a first electrical angle and a second type (D2) of tooth covering a second electrical angle different from the first electrical angle and wherein a phase of the motor is formed by windings (B1, B′1 or B2, B′2 or B3, B′3) wound onto teeth of the first type (D1) and second type (D2).
Claims13
A brushless dc electric motor comprising:
- a rotor comprising at least two pairs of poles;
- and
- a stator having a plurality of teeth around which windings forming coils for electromagnetic excitation of the rotor are wound,
- wherein the stator comprises a first type of tooth covering a first electrical angle and a second type of tooth covering a second electrical angle different from the first electrical angle,
- wherein a phase of the motor is formed by windings wound onto teeth of the first type and second type,
- wherein the first and second type of teeth covering the first and second electrical angles results in an electromotive force with a stepped form substantially similar to a sinusoidal form, and
- wherein the windings associated with a phase and wound onto teeth of the first type are connected in parallel to form a first subset, the windings associated with the said phase and wound onto teeth of the second type are connected in parallel to form a second subset, the first subset and the second subset being connected in series.
A brushless dc electric motor comprising:
- a rotor comprising at least two pairs of poles;
- and
- a stator having a plurality of teeth around which windings forming coils for electromagnetic excitation of the rotor are wound,
- wherein the stator comprises a first type of tooth covering a first electrical angle and a second type of tooth covering a second electrical angle different from the first electrical angle,
- wherein a phase of the motor is formed by windings wound onto teeth of the first type and second type,
- wherein the first and second type of teeth covering the first and second electrical angles results in an electromotive force with a stepped form substantially similar to a sinusoidal form, and
- wherein the winding wound onto a tooth of the first type and associated with a phase is connected in series with a winding wound onto a tooth of the second type and associated with the said phase so as to form a subset, the different subsets associated with a phase being connected in parallel.
Dependencies are inferred from the claim text.