Electromagnets with adjacent groups of electromagnets having different switching phases

Claim 2

A rotary electromotor having a stator with stator poles and a rotor with rotor poles, electromagnets operatively connected to the stator poles and permanent magnets operatively connected to the rotor poles, and electronic switching means operatively connected to the electromagnets for switching the electromagnets in dependency of the relative position of the stator and the rotor, the improvement comprising: said stator poles being arranged in groups, with the pole distances between the stator poles belonging to a common group being substantially equal and substantially corresponding to the pole distance between the rotor poles; said stator pole groups comprising end stator poles having no winding; said switching means operatively connected to the groups of electromagnets for switching simultaneously the electromagnets within each group, and adjacent groups thereof at differing times.

Claim 3

An electromotor according to claim 1 wherein the stator pole groups have alternate stator poles having no windings.

Claim 4

An electromotor according to claim 2 wherein the stator pole groups each consist of three stator poles.

Claim 5

An electromotor according to claim 2 wherein the stator pole groups each consist of five stator poles.

Claim 6

An electromotor according to claim 1 wherein a plurality of electronic switching means is provided, each associated to one of the stator pole groups and controlled by a common means for detecting the relative position of the rotor poles to the stator pole group.

Claim 7

An electromotor according to claim 1 wherein the electronic switching means includes a plurality of electronic subswitching means per stator pole group, said plurality of electronic subswitching means being controlled by a common sensor means for detecting the relative position of the rotor poles to the stator pole group.

Claim 8

A rotary electromotor having a stator with stator poles and a rotor with rotor poles, electromagnets operatively connected to the stator poles and permanent magnets operatively connected to the rotor poles, and electronic switching means oepratively connected to the electromagnets for switching the electromagnets in dependency of the relative positions of the stator and the rotor, the improvement comprising: said stator poles being arranged in groups, each group having a plurality of stator poles forming an electromagnetic circuit, with the pole distances between the stator poles belonging to a common group being substantially equal and substantially corresponding to the pole distances between the rotor poles; said groups of electromagnets being spaced with respect to each other for forming transition points between the groups, the pole distance between the transition point forming electromagnets differing from the pole distance between the rotor poles; said electronic switching means operatively connected to the groups of electromagnets for switching simultaneously the electromagnets within each group, and adjacent groups thereof at differing times; said plurality of stator poles forming an electromagnetic circuit disconnected between groups at their transition points for disconnecting the electromagnetic circuit at the transition points thereby reducing substantially the disturbing reactions occurring between adjacent electromagnet groups being switched at different times; and said stator pole groups having end stator poles with no windings.

Claim 9

A rotary electromotor having a stator with stator poles and a rotor with rotor poles, electromagnets operatively connected to the stator poles and permanent magnets operatively connected to the rotor poles, and electronic switching means oepratively connected to the electromagnets for switching the electromagnets in dependency of the relative positions of the stator and the rotor, the improvement comprising: said stator poles being arranged in groups, each group having a plurality of stator poles forming an electromagnetic circuit, with the pole distances between the stator poles belonging to a common group being substantially equal and substantially corresponding to the pole distances between the rotor poles; said groups of electromagnets being spaced with respect to each other for forming transition points between the groups, the pole distance between the transition point forming electromagnets differing from the pole distance between the rotor poles; said electronic switching means operatively connected to the groups of electromagnets for switching simultaneously the electromagnets within each group, and adjacent groups thereof at differing times; said plurality of stator poles forming an electromagnetic circuit disconnected between groups at their transition points for disconnecting the electromagnetic circuit at the transition points thereby reducing substantially the disturbing reactions occurring between adjacent electromagnet groups being switched at different times; and said stator pole groups having end stator poles with no windings.

Claim 10

An electromotor according to claim 7 wherein alternate stator poles within the stator pole groups have no windings.

Claim 11

An electromotor according to claim 8 wherein the stator pole groups each consist of three stator poles.

Claim 12

An electromotor according to claim 8 wherein the stator pole groups each consist of five stator poles.

Claim 13

A rotary electromotor having a stator with stator poles and a rotor with rotor poles, electromagnets operatively connected to the stator poles and permanent magnets operatively connected to the rotor poles, and electronic switching means operatively connected to the electromagnets for switching the electromagnets in dependency of the relative positions of the stator and the rotor, the improvement comprising: said stator poles being arranged in groups, each group having a plurality of stator poles forming an electromagnetic circuit with the pole distances between the stator poles belonging to a common group being substantially equal and substantially corresponding to the pole distance between the rotor poles; said groups of electromagnets being spaced with respect to each other for forming transition points between the groups, the pole distance between the transition point forming electromagnets differing from the pole distance between the rotor poles; said electronic switching means operatively connected to the groups of electromagnets for switching simultaneously the electromagnets within each group, and adjacent groups thereof at differing times; said plurality of stator poles forming an electromagnetic circuit disconnected between groups at their transition points for disconnecting the electromagnetic circuit at the transition points thereby reducing substantially the disturbing reactions occurring between adjacent electromagnet groups being switched at different times; and said stator pole groups having end stator poles with less winding than the adjacent stator poles of the respective group.

Claim 14

A rotary electromotor having a stator with stator poles and a rotor with rotor poles, electromagnets operatively connected to the stator poles and permanent magnets operatively connected to the rotor poles, and electronic switching means operatively connected to the electromagnets for switching the electromagnets in dependency of the relative positions of the stator and the rotor, the improvement comprising: said stator poles being arranged in groups, each group having a plurality of stator poles forming an electromagnetic circuit with the pole distances between the stator poles belonging to a common group being substantially equal and substantially corresponding to the pole distance between the rotor poles; said groups of electromagnets being spaced with respect to each other for forming transition points between the groups, the pole distance between the transition point forming electromagnets differing from the pole distance between the rotor poles; said electronic switching means operatively connected to the groups of electromagnets for switching simultaneously the electromagnets within each group, and adjacent groups thereof at differing times; said plurality of stator poles forming an electromagnetic circuit disconnected between groups at their transition points for disconnecting the electromagnetic circuit at the transition points thereby reducing substantially the disturbing reactions occurring between adjacent electromagnet groups being switched at different times; and said stator pole groups having end stator poles with less winding than the adjacent stator poles of the respective group.

Claim 15

A rotary electromotor having a stator with stator poles and a rotor with rotor poles, electromagnets operatively connected to the stator poles and permanent magnets operatively connected to the rotor poles, and electronic switching means operatively connected to the electromagnets for switching the electromagnets in dependency of the relative positions of the stator and the rotor, the improvement comprising: said stator poles being arranged in groups, each group having a plurality of stator poles forming an electromagnetic circuit with the pole distances between the stator poles belonging to a common group being substantially equal and substantially corresponding to the pole distances between the rotor poles; said groups of electromagnets being spaced with respect to each other for forming transition points between the groups, the pole distance between the transition point forming electromagnets differing from the pole distance between the rotor poles; said electronic switching means operatively connected to the groups of electromagnets for switching simultaneously the electromagnets within each group, and adjacent groups thereof at differing times; said plurality of stator poles forming an electromagnetic circuit disconnected between groups at their transition points for disconneting the electromagnetic circuit at the transition points thereby reducing substantially the disturbing reactions occurring between adjacent electromagnet groups being switched at different times; and wherein the electronic switching means includes a plurality of electronic subswitching means per stator pole group, said plurality of electronic subswitching means being controlled by a common sensor means for detecting the relative position of the rotor poles to the stator pole group.

Claim 16

A rotary electromotor having a stator with stator poles and a rotor with rotor poles, electromagnets operatively connected to the stator poles and permanent magnets operatively connected to the rotor poles, and electronic switching means operatively connected to the electromagnets for switching the electromagnets in dependency of the relative positions of the stator and the rotor, the improvement comprising: said stator poles being arranged in groups, each group having a plurality of stator poles forming an electromagnetic circuit with the pole distances between the stator poles belonging to a common group being substantially equal and substantially corresponding to the pole distances between the rotor poles; said groups of electromagnets being spaced with respect to each other for forming transition points between the groups, the pole distance between the transition point forming electromagnets differing from the pole distance between the rotor poles; said electronic switching means operatively connected to the groups of electromagnets for switching simultaneously the electromagnets within each group, and adjacent groups thereof at differing times; said plurality of stator poles forming an electromagnetic circuit disconnected between groups at their transition points for disconneting the electromagnetic circuit at the transition points thereby reducing substantially the disturbing reactions occurring between adjacent electromagnet groups being switched at different times; and wherein the electronic switching means includes a plurality of electronic subswitching means per stator pole group, said plurality of electronic subswitching means being controlled by a common sensor means for detecting the relative position of the rotor poles to the stator pole group.

Claim 17

A rotary electromotor comprising: a stator with stator poles and a rotor with rotor poles, electgromagnets and permanent magnets selectively connected to the stator and rotor poles; switching means operatively connected to the electromagnets for switching the electromagnets in dependency of the relative positions of the stator and the rotor; said stator poles being arranged in groups, each group having a plurality of stator poles forming an electrogmagnetic circuit, with the pole distances between the stator poles belonging to a common group being substantially equal and substantially corresponding to the pole distances between the rotor poles; said groups of electromagnets being spaced with respect to each other for forming transition points between the groups, the pole distance between the transition point forming electromagnets differing from the pole distance between the rotor poles; said switching means operatively connected to the groups of electromagnets for switching simultaneously the electromagnets within each group and adjacent groups thereof at differing times; said plurality of poles forming the electromagnetic circuits being disconnected between groups at their transition points for disconnecting the electromagnetic circuit at the transition points; and said group of poles forming the electromagnetic circuits having windings with end poles having less winding than the adjacent poles of the respective group.

Claim 18

A rotary electromotor comprising: a stator with stator poles and a rotor with rotor poles, electgromagnets and permanent magnets selectively connected to the stator and rotor poles; switching means operatively connected to the electromagnets for switching the electromagnets in dependency of the relative positions of the stator and the rotor; said stator poles being arranged in groups, each group having a plurality of stator poles forming an electrogmagnetic circuit, with the pole distances between the stator poles belonging to a common group being substantially equal and substantially corresponding to the pole distances between the rotor poles; said groups of electromagnets being spaced with respect to each other for forming transition points between the groups, the pole distance between the transition point forming electromagnets differing from the pole distance between the rotor poles; said switching means operatively connected to the groups of electromagnets for switching simultaneously the electromagnets within each group and adjacent groups thereof at differing times; said plurality of poles forming the electromagnetic circuits being disconnected between groups at their transition points for disconnecting the electromagnetic circuit at the transition points; and said group of poles forming the electromagnetic circuits having windings with end poles having less winding than the adjacent poles of the respective group.