Patent EP0230639A2 successfully refreshed from Google Patents.
EP0230639A2
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Lightweight high power electromagnetic transducer
Assignee: Danfoss Power Solutions US Co
•
Filing: 1986-12-22
•
Granted: —
•
Expires: 2006-12-22
Abstract
Abstract An electromagnetic transducer is disclosed that is lightweight and has a high power to weight ratio, with the transducer being capable of operation as an efficient motor, alternator or generator, and being particularly useful, for example, in connection with self-propelled vehicle applications such as passenger cars. The electromagnetic transducer can utilize a shell construction, which enhances heat removal, and includes a magnetic-flux producing assembly, having a plurality of spaced magnetic elements, and an armature assembly formed by a winding arrangement of dispersed conductive elements which are separated by flux carrying elements which, to the extent that such flux carrying elements are electrically conductive, are dispersed in one, two, or three dimensions to thus be dispersed-phase flux carrying elements. The armature conductors and flux carrying elements are dispersed to avoid creating opposing induced currents, or eddy currents, depending on the effect produced on transducer operation. This dispersal enables operation of the transducer at high efficiency with high torque being maintained even during high speed relative motion between the magnetic flux producing assembly and the armature with the combination of high torque and high speed producing higher power per unit weight than can now known devices.
Inventors
- 👤 Gene A. Fisher
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-07 02:56
CPC Classifications
H; H02; H02K; H02K1/00; H02K1/02; H02K47/00; H02K1/06; H02K1/12; H02K1/16; H02K1/165; H02K21/00; H02K21/12; H02K23/00; H02K23/56; H02K3/00; H02K3/04; H02K3/12; H02K3/46; H02K3/47; H02K33/00; H02K33/02; H02K33/04; H02K33/06; H02K33/16; H02K33/18; H02K41/00; H02K41/02; H02K41/03
Claims Analysis
Total Claims: 17
Claim 1
Independent Claim
123 words
A lightweight high power electromagnetic transducer, comprising: magnetic flux producing means; armature means in the path of magnetic flux produced by said magnetic flux producing means, said armature means including spaced sections of dispersed conductors and flux carrying means positioned between said sections of dispersed conductors; and actuation enabling means for enabling movement of one of said magnetic flux generating means and said armature means relative to the other of said magnetic flux generating means and said armature means with said relative movement therebetween including movement at a rate of speed sufficiently high such that the power output from said transducer is greater than one horsepower for each pound of weight of said transducer with said transducer utilized in a cooling gas medium.
Claim 2
Dependent Claim
123 words
A lightweight high power electromagnetic transducer, comprising: magnetic flux producing means; armature means in the path of magnetic flux produced by said magnetic flux producing means, said armature means including spaced sections of dispersed conductors and flux carrying means positioned between said sections of dispersed conductors; and actuation enabling means for enabling movement of one of said magnetic flux generating means and said armature means relative to the other of said magnetic flux generating means and said armature means with said relative movement therebetween including movement at a rate of speed sufficiently high such that the power output from said transducer is greater than one horsepower for each pound of weight of said transducer with said transducer utilized in a cooling gas medium.
Claim 3
Dependent Claim
37 words
The transducer of claim 1 wherein said dispersed conductors and said flux carrying means are configured so as to create low opposing induced currents and low eddy currents to enable operation of said transducer at high efficiency.
Claim 4
Dependent Claim
45 words
The transducer of claims 1 or 2 wherein said actuation enabling means enables said movement at a rate of speed sufficiently high such that the power output from said transducer is at least as great as five horsepower for each pound weight of said transducer.
Claim 5
Dependent Claim
29 words
The transducer of any one of the preceding claims wherein said magnetic flux producing means is made from one of neodymium boron ferrite, barium ferrite ceramic and samarium cobalt.
Claim 6
Dependent Claim
25 words
The transducer of any one of the preceding claims wherein said flux carrying means are dispersed-phased flux carrying elements positioned between turns of said winding.
Claim 7
Dependent Claim
45 words
The transducer of any one of the preceding claims wherein said magnetic flux producing means and said armature means are cylindrical, and wherein said flux producing means and said armature means are rotated relative to one another to provide said power output from said transducer.
Claim 8
Dependent Claim
47 words
The transducer of any one of the preceding claims wherein said magnetic flux producing means and said armature means are cylindrical, and wherein said flux producing means and said armature means are moved linearly reciprocating relative to one another to provide said power output from said transducer.
Claim 9
Dependent Claim
57 words
The transducer of any one of the preceding claims wherein said magnetic flux producing means and said armature means have substantially flat adjacent surfaces, and wherein said flux producing means and said armature means are moved such that said flat adjacent surfaces are moved linearly relative to one another to provide said power output from said transducer.
Claim 10
Dependent Claim
52 words
The transducer of any one of the preceding claims further including rotor means and wherein said magnetic flux producing means is mounted on said rotor means for movement in a predetermined rotational path upon rotation of said rotor means; and wherein said armature means is in the form of a thin shell.
Claim 11
Dependent Claim
76 words
The transducer of claim 9 wherein said transducer is operated as a motor, and wherein said actuation enabling means includes means adapted to supply a current to said dispersed conductors to enable said rotation of said rotor means at a sufficiently high rate of speed such that the power output from said motor is greater than one horsepower for each pound of weight of said motor when said motor is operated in a cooling gas medium.
Claim 12
Dependent Claim
47 words
The transducer of claim 9 wherein said transducer is operated as an electrical power generating means, and wherein said actuation enabling means includes means for causing rotation of said rotor means at said rate of speed sufficient to create said high power density operation of said transducer.
Claim 13
Dependent Claim
105 words
The transducer of claim 9 further including housing means; shaft means having a portion within said housing means; and mounting means for mounting said rotor means on said shaft means and wherein said rotor means includes cylindrical means coaxially positioned with respect to said shaft means so that said cylindrical means and said shaft means are constrained to common rotation; and wherein said dispersed conductors are a winding formed into a thin ring and said flux carrying means is provided by a plurality of at least two-dimensional elements different ones of which are positioned between different turns of said winding formed by said dispersed conductors.
Claim 14
Dependent Claim
27 words
The transducer of claim 12 wherein said rotor means includes second cylindrical means, and wherein said cylindrical means and said second cylindrical means provide flux return paths.
Claim 15
Dependent Claim
20 words
The transducer of any one of the preceding claims wherein said plurality of flux carrying means includes pressed iron powder.
Claim 16
Dependent Claim
35 words
The transducer of any one of the preceding claims wherein said spaced sections of said dispersed conductors are wires, and wherein said flux carrying means are coatings of highly magnetically permeable material on said wires.
Claim 17
Dependent Claim
33 words
The transducer of any one of the preceding claims wherein said wires have insulation material thereon, and wherein said coatings of highly permeable material are placed over said insulated coating on said wire.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
Maintenance schedule is calculated for granted US utility patents.