Transverse Flux Machine Torque Density via Segmented Magnetic Circuit
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Transverse flux machines face limitations in achieving high torque due to the constraints of magnetic field generation with existing configurations of permanent magnets and magnet cores.
Innovation Solution
The design incorporates a stator with circular coils and U-shaped magnet cores, along with inserted members that generate opposing magnetic fields, allowing for a more efficient magnetic flux distribution and increased torque by forming closed magnetic circuits and expanding magnetic flux density.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Power
If conventional configurations of permanent magnets and magnet cores are used, then the structure is simple, but torque density is limited
Solution Approach 1:
The magnetic circuit is segmented into multiple independent U-shaped magnet cores arranged around the stator coil, with each core forming a separate magnetic flux path. This segmentation allows each core to contribute independently to torque generation, increasing overall torque density while maintaining manageable structural complexity
Solution Approach 2:
The patent transitions from conventional radial flux paths to transverse flux paths that flow horizontally through the magnet cores perpendicular to the coil axis. This dimensional change in flux orientation enables more efficient magnetic circuit utilization and higher torque density without proportionally increasing structural complexity
2Power
If magnetic flux density is increased, then torque output increases, but magnetic resistance increases
Solution Approach 1:
Soft magnetic material cores serve as intermediaries that guide and concentrate magnetic flux between the stator coil and permanent magnets. These cores provide low-reluctance pathways that enable high magnetic flux density while minimizing magnetic resistance through optimized material selection and geometric design
Solution Approach 2:
The magnetic circuit employs composite construction combining soft magnetic material cores with permanent magnets. This composite approach allows the soft magnetic material to carry high flux density with low resistance while the permanent magnets provide sustained magnetic field, achieving high torque output without excessive magnetic resistance
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This configuration enhances torque density and magnetic flux density, achieving higher torque output with reduced magnetic resistance, thereby improving the overall performance of the transverse flux machine.
Implementation Method 1
a stator having a circular coil wound in a rotational direction... torque is generated by supplying polyphase current to the circular coils
Implementation Method 2
The rotor has permanent magnets and magnet cores on a circumference alternately. The permanent magnets and the magnet cores are arranged to face the magnetic polarity of the U-shaped magnet cores
Data Source
AI summary
A transverse flux machine includes a stator having a circular coil wound in a rotational direction and a rotor arranged to face the first ferromagnet across a gap. The stator has a plurality of first ferromagnets surrounding a part of the circular coil in the rotational direction separately. The rotor is rotatable about a center axis of the circular coil relative to the stator. The rotor has a plurality of second ferromagnets arranged in the rotational direction separately. A first member and a second member are inserted between adjacent ones of the second ferromagnets. The first member and the second member generate two magnetic fields opposite to each other in the circumference direction.