Back to results
US 2009/0021089 A1Published application
Motor and control unit thereof
AssigneeDenso Corporation
InventorMasayuki Nashiki
Life of this patent
Estimating the term…
Abstract
A motor and a control unit therefor comprise: salient rotor poles and salient stator poles, which are arranged along circumferences of phases A, B and C with an even interval therebetween; magnetic paths for passing magnetic fluxes, the paths permitting the magnetic fluxes passing through the salient rotor and stator poles of each phase to return to the rotor side; and substantially looped windings arranged between the salient stator poles of individual phases and the magnetic paths for passing magnetic fluxes, wherein currents are supplied to the windings in synchronization with the rotational position of the rotor to thereby output torque. Since the structures of the stator, the rotor and the windings are simple, productivity is enhanced, whereby high quality, small size and low cost can be realized.
Claims44
A single phase motor wherein the motor comprises:
- a plurality of salient poles arranged along a circumference of a stator and mechanically linked to an engine or a motor that can be started up from a stopped state;
- a plurality of salient poles arranged along a circumference of a rotor so as to be opposed to the salient poles;
- stator-side magnetic paths that are opposed to each other through an air gap between the stator and the rotor, so that magnetic fluxes passing through the salient poles can make a circuit;
- a rotor-side magnetic path of soft magnetic material, which is opposed to the stator-side magnetic paths through an air gap;
- a back yoke magnetic path magnetically coupled to the salient poles of the stator and the magnetic paths;
- a back yoke magnetic path magnetically coupled to the salient poles of the rotor and the magnetic paths;
- and
- a substantially looped winding for permitting a magnetomotive force to effect between the salient poles and the salient poles, for the production of magnetic fluxes and for the generation of torque.
5 more elements
A motor wherein the motor comprises:
- a plurality of salient poles arranged along a circumference of a stator;
- a plurality of salient poles arranged along a circumference of a rotor so as to be opposed to the salient poles;
- a plurality of salient poles arranged along a different circumference of the stator;
- a plurality of salient poles (RP3) arranged along a circumference of the rotor so as to be opposed to the salient poles;
- a magnetic path arranged along a different circumference of the stator and having a function of passing magnetic fluxes;
- a magnetic path arranged along a circumference of the rotor and having a function of passing magnetic fluxes;
- a back yoke magnetic path shared between the salient poles, the salient poles and the magnetic path of the stator;
- a back yoke magnetic path shared between the salient poles, the salient poles and the magnetic path of the rotor;
- and
- substantially looped windings arranged between the salient poles, the salient poles and the magnetic path of the stator.
7 more elements
A motor wherein the motor comprises:
- a plurality of salient poles arranged along a circumference of a stator
- a plurality of salient poles arranged along a circumference of a rotor so as to be opposed to the salient poles;
- a plurality of salient poles arranged along a different circumference of the stator;
- a plurality of salient poles arranged along a circumference of the rotor so as to be opposed to the salient poles;
- a magnetic path arranged along a different circumference of the stator and having a function of passing magnetic fluxes;
- a magnetic path arranged along a circumference of the rotor and having a function of passing magnetic fluxes;
- substantially looped windings arranged between the salient poles, the salient poles and the magnetic path of the stator;
- a back yoke magnetic path shared between the salient poles, the salient poles and the magnetic path of the stator;
- a back yoke magnetic path shared between the salient poles, the salient poles and the magnetic path of the rotor;
- a plurality of salient poles arranged along a different circumference of the stator, being magnetically separated from the salient poles and the salient poles
- a plurality of salient poles arranged along a circumference of the rotor so as to be opposed to the salient poles;
- a magnetic path arranged along a different circumference of the stator and having a function of passing magnetic fluxes;
- and
- a winding arranged along a circumference of the rotor, for permitting a magnetomotive force to effect between the magnetic path having a function of passing magnetic fluxes, and the salient poles and the salient poles, for the generation of torque.
11 more elements
A motor wherein the motor comprises:
- a plurality of salient poles arranged along a circumference of a stator;
- a salient poles arranged along a circumference of a rotor so as to be opposed to the salient poles;
- a plurality of salient poles arranged along a different circumference of the stator;
- a plurality of salient poles arranged along a circumference of the rotor so as to be opposed to the salient poles;
- a plurality of salient poles arranged along a different circumference of the stator;
- a plurality of salient poles arranged along a circumference of the rotor so as to be opposed to the salient poles;
- a magnetic path arranged along a different circumference of the stator and having a function of passing magnetic fluxes;
- a magnetic path arranged along a circumference of the rotor and having a function of passing magnetic fluxes;
- a back yoke magnetic path shared between the salient poles, the salient poles, the salient poles and the magnetic path of the stator;
- a back yoke magnetic path shared between the salient poles, the salient poles, the salient poles and the magnetic path of the rotor;
- and
- substantially looped windings arranged between the stator poles, the stator poles, the stator poles and the magnetic path of the stator.
9 more elements
A motor wherein the motor comprises:
- a plurality of salient poles arranged along a circumference of a stator;
- a plurality of salient poles arranged along a circumference of a rotor so as to be opposed to the salient poles;
- a plurality of salient poles arranged along a different circumference of the stator;
- a plurality of salient poles arranged along a circumference of the rotor so as to be opposed to the salient poles;
- a plurality of salient poles arranged along a different circumference of the stator;
- a plurality of salient poles arranged along a circumference of the rotor so as to be opposed to the salient poles,
- a back yoke magnetic path shared between the salient poles, the salient poles and the salient poles of the stator;
- a back yoke magnetic path shared between the salient poles, the salient poles and the salient poles of the rotor;
- and
- substantially looped windings arranged between the salient poles, the salient poles and the salient poles of the stator.
7 more elements
An N-phased (N is an integer of four or more) motor wherein:
- salient stator poles and salient rotor poles in one phase of the motor are configured, respectively, by a plurality of salient poles arranged along a circumference of a stator and a plurality of salient poles arranged along a circumference of a rotor so as to be opposed to the salient poles, such salient stator poles and salient rotor poles being provided by N sets for an N number of phases,
- wherein the motor comprises:
- a magnetic path arranged along a different circumference of the stator and having a function of passing magnetic fluxes;
- a magnetic path arranged along a circumference of the rotor and having a function of passing magnetic fluxes;
- a back yoke magnetic path shared between the N number of salient poles of the stator and the magnetic path;
- a back yoke magnetic path shared between the N number of salient poles of the rotor and the magnetic path;
- and
- an (N−1) number of substantially looped windings arranged between the N number of salient poles of the stator and the magnetic path.
5 more elements
An N-phased (N is an integer of four or more) motor wherein:
- salient stator poles and salient rotor poles in one phase of the motor are configured, respectively, by a plurality of salient poles arranged along a circumference of a stator and a plurality of salient poles arranged along a circumference of a rotor so as to be opposed to the salient poles, such salient stator poles and salient rotor poles being provided by N sets for an N number of phases,
- wherein the motor comprises:
- a back yoke magnetic path shared between the N number of salient poles;
- a back yoke magnetic path shared between the N number of salient poles of the rotor;
- and
- an (N−1) number of substantially looped windings arranged between the N number of salient poles of the stator.
3 more elements
A motor wherein the motor comprises:
- a plurality of salient poles arranged along a circumference of a stator;
- a plurality of salient poles arranged along a circumference of a rotor so as to be opposed to the salient poles;
- a plurality of salient poles arranged along a different circumference of the stator;
- a plurality of salient poles arranged along a circumference of the rotor so as to be opposed to the salient poles;
- a plurality of salient poles arranged along a different circumference of the stator;
- a plurality of salient poles arranged along a circumference of the rotor so as to be opposed to the salient poles;
- a magnetic path arranged along a different circumference of the stator and having a function of passing magnetic fluxes;
- a magnetic path arranged along a circumference of the rotor and having a function of passing magnetic fluxes;
- a back yoke magnetic path shared between the salient poles, the salient poles, the salient poles and the magnetic path of the stator;
- a back yoke magnetic path shared between the salient poles, the salient poles, the salient poles and the magnetic path of the rotor;
- substantially looped windings arranged at an inner side of salient stator poles located at both ends of the stator among the salient poles, the salient poles and the salient poles, the looped windings being imparted with a phase of the relevant stator poles;
- and
- substantially looped windings arranged at both sides of salient stator poles other than the ones located at both ends the stator but are located in the middle thereof among the salient poles, the salient poles and the salient poles, both of the windings being inversely connected in series.
10 more elements
An N-phased (N is an integer of three or more) motor wherein the motor comprises:
- groups of salient stator poles and groups of salient rotor poles for an N number of phases, which consist, respectively, of N sets of a plurality of salient stator poles arranged along a circumference of a stator, and N sets of a plurality of salient rotor poles arranged opposed to the salient stator poles;
- a back yoke magnetic path shared between the N sets of salient stator pole groups;
- a back yoke magnetic path shared between the N sets of salient rotor pole groups;
- substantially looped windings provided at an inner side of salient stator poles located at both ends of the stator among the groups of the salient stator poles, the looped windings being imparted with a phase of the relevant stator poles;
- and
- substantially looped windings arranged at both sides of salient stator poles other than the ones located at both ends of the stator but are located in the middle thereof among the groups of the salient stator poles, both of the windings being inversely connected in series.
3 more elements
An N-phased (N is an integer of three or more) motor wherein the motor comprises:
- groups of salient stator poles and groups of salient rotor poles for an N number of phases, which consist, respectively, of N sets of a plurality of salient stator poles arranged along a circumference of a stator, and N sets of a plurality of salient rotor poles arranged opposed to the salient stator poles;
- a back yoke magnetic path shared between the N sets of salient stator pole groups;
- a back yoke magnetic path shared between the N sets of salient rotor pole groups
- substantially looped windings provided at an inner side of salient stator poles located at both ends of the stator among the groups of the salient stator poles, the looped windings being imparted with a phase of the relevant stator poles;
- and
- substantially looped windings arranged at both sides of salient stator poles other than the ones located at both ends of the stator but are located in the middle thereof among the groups of the salient stator poles, both of the windings being inversely connected in series,
- wherein directions of turns or directions of currents of the respective windings of the N sets of the salient stator poles are alternated between positive and negative in the order of relative phases of the salient stator and rotor poles, whereat directions of magnetic fluxes of the individual phases induced to the N sets of salient stator poles are alternated between positive and negative in the order of the relative phases of the salient stator and rotor poles.
4 more elements
A motor wherein:
- the motor comprises groups of salient stator poles and groups of salient rotor poles for an N number of phases, which consist, respectively, of N sets of a plurality of salient stator poles arranged along a circumference of a stator, and N sets of a plurality of salient rotor poles arranged opposed to the salient stator poles,
- wherein two sets of salient stator poles among them, whose relative phases of the salient stator and rotor poles are substantially the same in electrical angle, are adjacent to each other;
- and
- the motor further comprises:
- a winding arranged between the adjacent two salient stator poles;
- a winding arranged between different two sets of salient stator poles which are adjacent to the above two sets of salient stator poles;
- a back yoke magnetic path shared between the N sets of the groups of the salient stator poles;
- and
- a back yoke magnetic path shared between the N sets of the groups of the salient rotor poles.
6 more elements
A motor characterized in that:
- the motor comprises a plurality of salient stator poles arranged along a circumference of a stator and a plurality of salient rotor poles arranged opposed to the salient stator poles;
- two sets of salient stator poles among them, whose relative phases of the salient stator and rotor poles are substantially the same in electrical angle, are adjacent to each other;
- two sets of salient rotor poles are adjacent to each other in the similar manner;
- a drive mechanism is constituted, the mechanism comprising:
- a stator back yoke magnetic path shared between the two sets of the groups of the salient stator poles;
- a rotor back yoke magnetic path shared between the two sets of the groups of the salient rotor poles;
- and
- a winding arranged between the adjacent two sets of salient stator poles;
- and
- an (N−2)/2=(N/2−1) number of drive mechanisms having the same configuration are constituted as to other salient stator poles, salient rotor poles, the back yoke magnetic paths and windings,
- wherein there is arranged, among the drive mechanisms, at least either one of an intermediate member having large magnetic resistance between adjacent stator back yoke magnetic paths, and an intermediate member having large magnetic resistance between adjacent rotor back yoke magnetic paths.
8 more elements
A motor and a control unit therefor, wherein the motor and the control unit therefor comprise:
- a magnetic path arranged along a circumference and magnetically coupling a stator and a rotor;
- stator poles arranged along a circumference so that portions having large magnetic resistance and portions having small magnetic resistance are substantially alternated;
- rotor poles arranged along a circumference so that portions having large magnetic resistance and portions having small magnetic resistance are substantially alternated, the rotor poles being radially opposed to the stator poles;
- a winding arranged between the magnetic path and the stator poles;
- stator poles arranged along a circumference so that portions having large magnetic resistance and portions having small magnetic resistance are substantially alternated, the stator poles being adjacent to the magnetic paths;
- rotor poles arranged along a circumference so that portions having large magnetic resistance and portions having small magnetic resistance are substantially alternated, the rotor poles being radially opposed to the stator poles;
- a winding arranged between the stator magnetic path and the stator poles;
- a third winding;
- and
- power elements capable of on/off control of currents, wherein the motor and the control unit therefor are configured such that:
- one end of each of the power element and the power element is connected to a positive terminal of a DC power source;
- one end of each of the power element and the power element is connected to a negative terminal of a DC power source;
- any one of the windings is connected between the power element and the power element;
- any one of the windings is connected between the power element and the power element;
- any one of the windings is connected between the power element and the power element;
- when torque is to be generated between the stator poles and the rotor poles, the two power elements connected with the winding are driven for current supply, and at the same time, the two power elements connected with the winding are driven for current supply;
- and
- when torque is to be generated between the stator poles and the rotor poles, the two power elements connected with the winding are driven for current supply.
15 more elements
A motor and a control unit therefor, wherein the motor and the control unit therefor comprise:
- a magnetic path arranged along a circumference and magnetically coupling a stator and a rotor;
- stator poles arranged along a circumference so that portions having large magnetic resistance and portions having small magnetic resistance are substantially alternated;
- rotor poles arranged along a circumference so that portions having large magnetic resistance and portions having small magnetic resistance are substantially alternated, the rotor poles being radially opposed to the stator poles;
- a winding arranged between the magnetic path and the stator poles;
- stator poles arranged along a circumference so that portions having large magnetic resistance and portions having small magnetic resistance are substantially alternated, the stator poles being adjacent to the magnetic path;
- rotor poles arranged along a circumference so that portions having large magnetic resistance and portions having small magnetic resistance are substantially alternated, the rotor poles being radially opposed to the stator poles;
- a winding arranged between the stator magnetic paths and the stator poles;
- a third winding;
- and
- power elements capable of on/off control of currents,
- wherein the motor and the control unit therefor are configured such that:
- one end of each of the power element and the power element is connected to a positive terminal of a DC power source;
- one end of each of the power element and the power element is connected to a negative terminal of a DC power source;
- the winding is connected between the power element and the power element;
- the winding is connected between the power element and the power element;
- the winding is connected between the power element and the power element, or between the power element and the power element;
- when torque is to be generated between the stator poles and the rotor poles, power elements and the power elements are driven for current supply to the winding;
- and
- when torque is to be generated between the stator poles and the rotor poles, the power elements and the power elements are driven for serial current supply to the winding and the winding.
16 more elements
A motor and a control unit therefor, wherein the motor and the control unit therefor comprise:
- a magnetic path arranged along a circumference and magnetically coupling a stator and a rotor;
- stator poles arranged along a circumference so that portions having large magnetic resistance and portions having small magnetic resistance are substantially alternated;
- rotor poles arranged along a circumference so that portions having large magnetic resistance and portions having small magnetic resistance are substantially alternated, the rotor poles being radially opposed to the stator poles;
- a winding arranged between the magnetic paths and the stator poles;
- stator poles arranged along a circumference so that portions having large magnetic resistance and portions having small magnetic resistance are substantially alternated, the stator poles being adjacent to the magnetic path;
- rotor poles arranged along a circumference so that portions having large magnetic resistance and portions having small magnetic resistance are substantially alternated, the rotor poles being radially opposed to the stator poles;
- a winding arranged between the stator magnetic paths and the stator poles;
- a third winding;
- and
- power elements capable of on/off control of currents,
- wherein the motor and the control unit therefor are configured such that:
- one end of each of the power element and the power element is connected to a positive terminal of a DC power source;
- one end of each of the power element and the power element is connected to a negative terminal of a DC power source;
- the winding is connected between the power element and the power element;
- the winding is connected between the power element and the power element;
- the winding is connected between the power element and the power element;
- when torque is to be generated between the stator poles and the rotor poles, power elements and the power elements are driven for current supply to the winding;
- and
- when torque is to be generated between the stator poles and the rotor poles, the power elements and the power elements are driven for serial current supply to the winding and the winding.
16 more elements
Dependencies are inferred from the claim text.