Motor/generator structure
OwnerBryan Prucherinventor
Life of this patent
Estimating the term…
Abstract
A radial gap motor/generator has a thin annular array of magnets mounted for rotation to a stator in a radially spaced relation to at least one thin annular induction structure fixed to a stationary stator may be air or liquid cooled. Further, the motor has at least radial gap between a magnetic core and the array and may include multiple gaps and multiple annular induction structures to increase the overall power density of the system.
Claims19
A brushless electric DC motor/generator, comprising:
- (a) a stator having an outer surface,
- (b) an induction structure juxtaposed the outer surface of the stator, the induction structure comprising at least one wire wound coil segment,
- (c) a rotor having an inner surface,
- (d) a permanent magnet structure juxtaposed the inner surface of the rotor and disposed proximate the induction structure, and
- (e) means for mounting the rotor and stator to one another for relative coaxial rotation about a center axis and in a manner such that there is at least two radial gaps separating the induction structure from the magnet structure.
In an improved brushless DC motor/generator, the motor/generator including a rotor mounted for rotation about a stator and an arrangement of electrical wire wound coils and permanent magnets that operate to convert electric current into mechanical power, the improvement comprising:
- (a) the rotor and stator, respectively, including a cylindrical inner face and a cylindrical outer face,
- (b) means for mounting the rotor and stator such that their inner and outer faces are centered in coaxial relation on a common central axis and separated by an annular gap and the inner face of the rotor is mounted for rotation relative to outer face of the stator,
- (c) an induction structure comprising a first and second sets of coil wound wires said wire wound coils include a first set of identically shaped first coil segments and a second set of identically shaped second coil segments, each said coil segment being, rectangular and ring shaped and including first and second side portions and first and second end portions, the side portions of each of the coil segments being substantially of the same length and forming a respective first plane and the end portions of the first set of coil segments extending at an acute angle from the side portions thereof and parallel to the respective first planes, and
- (d) means for mounting the wire wound coils around the outer face of the stator such that the coil segments of each set are angularly spaced from one another and the coil segments of the first set are arranged in alternating and overlapping relation with the coil segments of the second set, the first and second side portions of the coil segments extending axially with their axes parallel to and centered on the axis of rotation, and wherein the first and second side portions of each coil segment of the first set is overlapped with the second and first side portions, respectively, of the next succeeding and preceding coil segments of the second set, the end portions of each of the coil segments of the first set of coil segments enabling the coil segments to overlap and position the side portions in angularly spaced side by side relation.
A brushless DC motor, comprising;
- (a) a stator,
- (b) a rotor mounted for rotation relative to the stator,
- (c) first and second spaced apart successions of permanent magnets, mounted to the rotor for rotation therewith, and
- (d) an electromagnetic induction structure mounted to the stator, and
- wherein the first and second successions of permanent magnets are in juxtaposed relation with the induction structure to define at least two radial gaps therebetween.
Dependencies are inferred from the claim text.