Planar Motor Stator Layout With In-Layer Coil Connections
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Solution Overview
Problem
In planar-drive systems, the connecting structures between coil conductors in the stator assembly occupy valuable space and do not contribute to the driving force of the rotor, limiting the arrangement and efficiency of the stator layers.
Innovation Solution
A stator assembly design where coil conductors are arranged in a three-phase system with horizontal connecting conductors within the stator layers, eliminating the need for vertical interconnecting structures and maximizing space for coil conductor arrangement, and using vertical connecting conductors to connect phases across layers in a space-saving manner.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If connecting structures are used to connect coil conductors in the stator assembly, then the coil conductors can be electrically connected to form a three-phase system, but the connecting structures occupy valuable space that is no longer available for arranging coil conductors
Solution Approach 1:
The connecting structures are merged with the coil conductors themselves to form an integrated three-phase system. The coil conductors are arranged and connected such that the connecting structures become part of the functional conductor pattern rather than separate space-consuming elements. This merging allows the same space to serve both as current-carrying conductors and as connection paths, thereby eliminating the trade-off between connection reliability and available area.
2Reliability
If connecting structures are used to connect coil conductors, then the three-phase system can be formed, but the drive currents on the connecting structures do not contribute to driving the rotor
Solution Approach 1:
The connecting structures are designed to perform multiple functions simultaneously: they serve as electrical connection paths between coil conductors and also as active current-carrying elements that contribute to rotor driving. By arranging the connecting structures in specific patterns and orientations, they generate magnetic fields that add to the overall driving force, thereby making them multi-functional rather than purely connective.
3Device complexity
If vertical interconnecting structures are used to connect stator layers, then coil conductors of different stator layers can be connected, but these structures occupy space and reduce the efficiency of coil conductor arrangement
Solution Approach 1:
The vertical interconnecting structures are extracted or eliminated from the design by implementing alternative connection methods within the stator layers themselves. The three-phase system is configured to achieve necessary electrical connections through horizontal and planar arrangements, removing the need for vertical interconnects that would consume valuable three-dimensional space and complicate the overall structure.
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 design enhances space utilization in the stator assembly, allowing for a more efficient arrangement of coil conductors and improved driving force distribution, thereby increasing the operational efficiency of the planar motor.
Implementation Method 1
a driving force is exerted on the rotor by the of current-carrying coil conductors magnetically interacting with driving magnets of a magnet arrangement
Data Source
AI summary
A stator assembly for a planar electrical motor includes coil conductors arranged in a stator layer, elongated in a first direction and arranged side by side in a second direction perpendicular to the first direction. The coil conductors are connected to form a three-phase system, with a first forward conductor and first return conductor of the first phase connected in series to the first forward conductor, a second forward conductor and second return conductor of the second phase connected in series with the second forward conductor, and a third forward conductor and third return conductor of the third phase connected in series with the third forward conductor. The three-phase system has first and second opposite sides. The first forward conductor and the first return conductor are electroconductively connected in series by first and second horizontal connecting conductors arranged in the stator layer on the second and first side, respectively.