Hyperloop Technologies, Inc.

Motorola Solutions, Inc.

Shahriyar Beizaee

Rachel Ozer

Arbi Gharakhani Siraki

Erik Johnson

Ju Hyung Kim

Alexander Jedinger

Tim Lambert

Sushant Chavan

Yingjie Li

Jett Ferm

Richard Parks

A system (), electromagnetic actuator () and track () for braking are provided. The actuator () includes pole portions () extending from back-iron portions. Respective longitudinal axes () of the pole portions () are arranged about parallel to one another and about perpendicular to a common movement axis (). A pole pitch of the pole portions () is selected to induce eddy currents in a segmented track (), such that the eddy currents are present in a skin depth at more than one surface of segments () of the segmented track () when the pole portions () are moving at given speeds. Eddy current generated losses occupy about an entirety of a volume of a segment () of the track () below a given intermediate speed, and the eddy current generated losses occupy at least one third of the volume of the segment () at a given maximum speed greater than the given intermediate speed. Individually controllable electrical windings are around respective pole portions ().

System, electromagnetic actuator and track for braking

Homopolar linear synchronous machines are provided herein that include a mover device. The mover device includes a cold plate with ferromagnetic cores extending through slots in the cold plate. Layers of armature coils are located around the ferromagnetic cores on opposite sides of the cold plate. The mover device further includes at least one field coil.

Homopolar linear synchronous machine

A channel segment for a track of a mover device is provided, the channel segment comprising: opposite ends joined by a body forming a magnetic flux pathway between the opposite ends, the magnetic flux pathway being one or more of C-shaped, U-shaped and horseshoe shaped between the opposite ends, the opposite ends forming respective transverse magnetic flux pathways about perpendicular to the magnetic flux pathway; laminations of ferromagnetic material forming the body, the laminations about parallel to the magnetic flux pathway and about perpendicular to the respective transverse magnetic flux pathways; shear pins through the laminations, the shear pins positioned to reduce eddy currents one or more of in and around the shear pins; and a retention mechanism at the opposite ends, the retention mechanism configured to transversely fasten the laminations together at the opposite ends while remaining insulated from each other.

Channel segment for a track of a mover device

Disclosed is a machine having a moving member. The moving member including a cold plate having a plurality of slots through the cold plate. The moving member also including a plurality of ferromagnetic cores coupled to the cold plate, each of the plurality of ferromagnetic cores protruding through a respective one of the plurality of slots, creating gaps between the plurality of ferromagnetic cores. The moving member also including a plurality of armature windings coupled to the cold plate, the plurality of armature windings occupying the gaps between the plurality of ferromagnetic cores.

Homopolar linear synchronous machines () are provided herein that include a mover device (). The mover device () includes a cold plate with ferromagnetic cores extending through slots in the cold plate. Layers of armature coils are located around the ferromagnetic cores on opposite sides of the cold plate. The mover device () further includes at least one field coil.

A moving member of a machine can include a cold plate that serves as a primary structural member for the moving member. The cold plate can have one or more cooling channels formed within the cold plate. A plurality of armature windings can be fixed to the cold plate. One or more field windings can be fixed to the cold plate. A plurality of ferromagnetic cores can be fixed to the cold plate, each ferromagnetic core positioned within a loop of at least one of the plurality of armature windings. Other embodiments are described.

Disclosed is a yoke-less mover of a homopolar linear synchronous machine. The yoke-less mover may include a cold plate having slots. Ferromagnetic cores are fixed to the cold plate. Each of the ferromagnetic cores may protrude through a respective one of the slots, creating gaps between the ferromagnetic cores. Armature windings are fixed to the cold plate. The armature windings may occupy the gaps between the ferromagnetic cores. The ferromagnetic cores of the yoke-less mover have better ferromagnetic utilization and lower weight. It also enables more flexible topologies in the armature windings.

Growing community of inventors

Woodland Hills, CA, United States of America

Shahriyar Beizaee