Abstract

The subject application discloses improved rotor assemblies containing permanent magnets, tailored for two distinct synchronous machine topologies—radial and axial flux machines. The subject application discloses improved rotor assemblies containing permanent magnets, tailored for two distinct synchronous machine topologies—radial and axial flux machines. Both rotor structures incorporate elongated bodies having soft-magnetic elements strategically arranged between permanent magnet groupings. The subject application discloses improved rotor assemblies containing permanent magnets, tailored for two distinct synchronous machine topologies—radial and axial flux machines. Both rotor structures incorporate elongated bodies having soft-magnetic elements strategically arranged between permanent magnet groupings. Uniquely, the soft-magnetic components feature an innovative conical geometry to focus magnetic flux. The subject application discloses improved rotor assemblies containing permanent magnets, tailored for two distinct synchronous machine topologies—radial and axial flux machines. Both rotor structures incorporate elongated bodies having soft-magnetic elements strategically arranged between permanent magnet groupings. Uniquely, the soft-magnetic components feature an innovative conical geometry to focus magnetic flux. The permanent magnets positioned on each side of an element share identical polarity to strengthen flux. The subject application discloses improved rotor assemblies containing permanent magnets, tailored for two distinct synchronous machine topologies—radial and axial flux machines. Both rotor structures incorporate elongated bodies having soft-magnetic elements strategically arranged between permanent magnet groupings. Uniquely, the soft-magnetic components feature an innovative conical geometry to focus magnetic flux. The permanent magnets positioned on each side of an element share identical polarity to strengthen flux. The particular shape of the intersection between soft-magnetic elements and permanent magnets allows spreading the stress linked to the centrifugal force applied to the permanent magnet during the motor operation. The subject application discloses improved rotor assemblies containing permanent magnets, tailored for two distinct synchronous machine topologies—radial and axial flux machines. Both rotor structures incorporate elongated bodies having soft-magnetic elements strategically arranged between permanent magnet groupings. Uniquely, the soft-magnetic components feature an innovative conical geometry to focus magnetic flux. The permanent magnets positioned on each side of an element share identical polarity to strengthen flux. The particular shape of the intersection between soft-magnetic elements and permanent magnets allows spreading the stress linked to the centrifugal force applied to the permanent magnet during the motor operation. Radial rotors create a circumferential air gap, while axial rotors have an axial-oriented gap. The subject application discloses improved rotor assemblies containing permanent magnets, tailored for two distinct synchronous machine topologies—radial and axial flux machines. Both rotor structures incorporate elongated bodies having soft-magnetic elements strategically arranged between permanent magnet groupings. Uniquely, the soft-magnetic components feature an innovative conical geometry to focus magnetic flux. The permanent magnets positioned on each side of an element share identical polarity to strengthen flux. The particular shape of the intersection between soft-magnetic elements and permanent magnets allows spreading the stress linked to the centrifugal force applied to the permanent magnet during the motor operation. Radial rotors create a circumferential air gap, while axial rotors have an axial-oriented gap. Together, these advances aim to boost torque production and lower torque ripples to enhance overall performance. The subject application discloses improved rotor assemblies containing permanent magnets, tailored for two distinct synchronous machine topologies—radial and axial flux machines. Both rotor structures incorporate elongated bodies having soft-magnetic elements strategically arranged between permanent magnet groupings. Uniquely, the soft-magnetic components feature an innovative conical geometry to focus magnetic flux. The permanent magnets positioned on each side of an element share identical polarity to strengthen flux. The particular shape of the intersection between soft-magnetic elements and permanent magnets allows spreading the stress linked to the centrifugal force applied to the permanent magnet during the motor operation. Radial rotors create a circumferential air gap, while axial rotors have an axial-oriented gap. Together, these advances aim to boost torque production and lower torque ripples to enhance overall performance. The combination of tapered soft-magnetic cones, optimized magnet polarity, and air gaps demonstrating advancements in high-power permanent magnet rotor engineering for specialized synchronous machines.

IPC Classes  ?

• H02K 1/27 - Rotor cores with permanent magnets
• H02K 15/035 - Processes or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines of stator or rotor bodies having permanent magnets on the rotor

Abstract

The subject application provides a rotor assembly for radial/axial synchronous reluctance machines, a system assembly and method for producing a rotor assembly. The rotor assembly (100) comprises an elongated body (110) which cross-section comprises at least one pair of a first rotor magnetic pole segment (112) and a second rotor magnetic pole segment (112). The rotor assembly (100) is arranged such that, when being exposed to a magnetic flux, a free end of the first rotor magnetic pole segment (112), called first free end (1122a) and a free end of the second rotor magnetic pole segment (112), called second free end (1123a), are facing each other, the first free ends (1122a,1123a) having no surface contact with one another or a minimum surface contact (1125) with one another, thereby forming a flux barrier for inhibiting the magnetic flux from flowing between the first free ends (1122a, 1123a).

IPC Classes  ?

• H02K 1/24 - Rotor cores with salient poles
• H02K 15/022 - Magnetic cores with salient poles
• H02K 19/10 - Synchronous motors for multi-phase current

Abstract

The subject application presents permanent magnet DC motor stator assemblies utilizing concave magnet configurations to enhance magnetic flux concentration. The stator designs incorporate buried permanent magnets (111) arranged in specific geometric patterns, surrounded by soft magnetic elements (112). This arrangement creates focused magnetic flux paths while maintaining magnetic isolation between poles. The subject-application also provides a method for converting between radial and axial configurations, offering enhanced design flexibility and manufacturing efficiency. These innovations result in improved magnetic field distribution and motor performance.

IPC Classes  ?

• H02K 23/04 - DC commutator motors or generators having mechanical commutatorUniversal AC/DC commutator motors characterised by arrangement for exciting having permanent magnet excitation
• H02K 23/56 - Motors or generators having iron cores separated from armature winding

Abstract

The subject application discloses improved rotor assemblies containing permanent magnets, tailored for two distinct synchronous machine topologies - radial and axial flux machines. Both rotor structures incorporate elongated bodies having soft-magnetic elements strategically arranged between permanent magnet groupings. Uniquely, the soft-magnetic components feature an innovative conical geometry to focus magnetic flux. The permanent magnets positioned on each side of an element share identical polarity to strengthen flux. The particular shape of the intersection between soft-magnetic elements and permanent magnets allows spreading the stress linked to the centrifugal force applied to the permanent magnet during the motor operation. Radial rotors create a circumferential air gap, while axial rotors have an axial-oriented gap. Together, these advances aim to boost torque production and lower torque ripples to enhance overall performance. The combination of tapered soft-magnetic cones, optimized magnet polarity, and air gaps demonstrating advancements in high-power permanent magnet rotor engineering for specialized synchronous machines.

IPC Classes  ?

• H02K 1/276 - Magnets embedded in the magnetic core, e.g. interior permanent magnets [IPM]
• H02K 1/279 - Magnets embedded in the magnetic core
• H02K 1/2795 - Rotors axially facing stators the rotor consisting of two or more circumferentially positioned magnets
• H02K 1/2798 - Rotors axially facing stators the rotor consisting of two or more circumferentially positioned magnets where both axial sides of the stator face a rotor

Abstract

The subject application provides a rotor assembly for radial/axial synchronous reluctance machines, a system assembly and method for producing a rotor assembly. The rotor assembly (100) comprises an elongated body (110) which cross-section comprises at least one pair of a first rotor magnetic pole segment (112) and a second rotor magnetic pole segment (112). The rotor assembly (100) is arranged such that, when being exposed to a magnetic flux, a free end of the first rotor magnetic pole segment (112), called first free end (1122a) and a free end of the second rotor magnetic pole segment (112), called second free end (1123a), are facing each other, the first free ends (1122a,1123a) having no surface contact with one another or a minimum surface contact (1125) with one another, thereby forming a flux barrier for inhibiting the magnetic flux from flowing between the first free ends (1122a,1123a).

IPC Classes  ?

• H02K 1/24 - Rotor cores with salient poles
• H02K 1/2746 - Inner rotors the magnetisation axis of the magnets being perpendicular to the rotor axis the rotor consisting of two or more circumferentially positioned magnets the rotor consisting of magnets arranged with the same polarity, e.g. consequent pole type
• H02K 1/30 - Means for mounting or fastening rotating magnetic parts on to, or to, the rotor structures using intermediate parts, e.g. spiders
• H02K 15/02 - Processes or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines of stator or rotor bodies