Four-pole synchronous reluctance motor
AssigneeSiemens Aktiengesellschaft
InventorsRegina Bach, Johannes Schmidt
Life of this patent
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Abstract
A synchronous reluctance motor, in particular a four-pole synchronous reluctance motor includes a stator with 48 stator grooves for receiving a winding system; a reluctance rotor, which is spaced apart from the stator by an air gap. The reluctance rotor has axes with a high magnetic conductivity (d-axis) and axes with low magnetic conductivity (q-axis). Provision is made for an arrangement of magnetically conductive flux-conducting portions and magnetic flux barriers, which are arranged such as to form the d-axis and the q-axis of the reluctance rotor. The reluctance rotor has a geometric groove separation angle of αr 6° or 10°, which angle is between two adjacent magnetic flux barriers at the air gap.
Claims5
A four-pole synchronous reluctance motor, comprising:
- a stator having 48 stator slots for receiving a winding system;
- a reluctance rotor spaced from the stator by an air gap and including a laminated stack as a magnetically active part, said laminated stack being formed from multiple layers or laminations that each have a magnetically soft material, the layers having electrically insulating part layers and being arranged axially aligned, said reluctance rotor having axes of a high magnetic conductivity (d-axis) and axes of low magnetic conductivity (q-axis);
- an arrangement of magnetically conductive flux guiding sections and magnetic flux blockers arranged such as to form the d-axis and the q-axis of the reluctance rotor, with the reluctance rotor having a geometric slot dividing angle of αr=6° between two adjacent ones of the magnetic flux blockers on the air gap, said flux blockers being embodied in a region of the q-axis either with radially extending stabilizing connecting pieces or without stabilizing connecting pieces;
- and
- a number of flux barriers maximized in dependence upon a selected number of rotor slots or the slot division angle, each said flux barrier being a connecting piece located on an end of an associated one of the flux blockers in a region of the air gap, wherein the flux barriers in a region of the d-axis are embodied as radially thinner than in a region of the q axis,
- wherein the reluctance rotor is configured in the absence of any permanent magnets.
A four-pole synchronous reluctance motor, comprising:
- a stator having 48 stator slots for receiving a winding system;
- a reluctance rotor spaced from the stator by an air gap and including a laminated stack as a magnetically active part, said laminated stack being formed from multiple layers or laminations that each have a magnetically soft material, the layers having electrically insulating part layers and being arranged axially aligned, said reluctance rotor having axes of a high magnetic conductivity (d-axis) and axes of low magnetic conductivity (q-axis);
- an arrangement of magnetically conductive flux guiding sections and magnetic flux blockers arranged such as to form the d-axis and the q-axis of the reluctance rotor, with the reluctance rotor having a geometric slot dividing angle of αr=10° between two adjacent ones of the magnetic flux blockers on the air gap, said flux blockers being embodied in a region of the q-axis either with radially extending stabilizing connecting pieces or without stabilizing connecting pieces;
- and
- a number of flux barriers maximized in dependence upon a selected number of rotor slots or the slot division angle, each said flux barrier being a connecting piece located on an end of an associated one of the flux blockers in a region of the air gap, wherein the flux barriers in a region of the d-axis are embodied as radially thinner than in a region of the q axis,
- wherein the reluctance rotor is configured in the absence of any permanent magnets.
Dependencies are inferred from the claim text.