Immersed Rotor Windings in Monopole Electromagnetic Machine
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Solution Overview
Problem
Existing rotating electromagnetic machines do not have radial rotor windings fully immersed in slots of a permeable rotor frame, and prior art lacks the specific winding arrangements and configurations described in this disclosure.
Innovation Solution
A rotating electromagnetic apparatus with a stator frame supporting disc-shaped permanent magnets and a magnetically permeable rotor frame with radially oriented, toroidally wound coils fully immersed in slots, along with a commutator providing current to the coils in parallel or series electrical interconnection, enabling operation as both a DC and AC motor or generator.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If radial rotor windings are fully immersed in slots of a permeable rotor frame, then machine performance and efficiency are improved, but device complexity and manufacturing difficulty increase
Solution Approach 1:
The rotor windings are divided into multiple discrete coils, each fitted into separate slots in the rotor frame. This segmentation allows each coil to be independently positioned and secured within its slot, achieving full immersion while maintaining manageable construction complexity through modular assembly
Solution Approach 2:
The coils are nested within the slots of the rotor frame, with the windings fully immersed inside the slot structures. This nesting arrangement provides magnetic shielding and mechanical support while achieving the performance benefits of full immersion without external exposure of winding ends
2Use of energy by moving object
If coils are fully immersed within rotor slots, then magnetic field efficiency is improved, but cooling and access for maintenance become more difficult
Solution Approach 1:
The coils are pre-assembled and then inserted into the rotor slots as complete units. This preliminary assembly allows for quality control and proper positioning before installation, ensuring full immersion for magnetic efficiency while maintaining the ability to replace entire coil assemblies for maintenance purposes
3Adaptability or versatility
If permanent magnets are arranged with N-N or S-S facing poles, then monopole magnetic field is generated, but manufacturing precision requirements increase
Solution Approach 1:
The permanent magnets are arranged with specific local polarity orientations (N-N or S-S facing) at particular locations around the rotor circumference. This localized polarity arrangement creates the monopole magnetic field effect while allowing standard manufacturing tolerances through the use of segmented magnet assemblies that can be precisely positioned in their respective slots
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
The solution provides improved performance due to winding immersion in rotor slots, allowing for efficient operation in various modes and extending the wear life of brushes through optimized contact configurations, thus enhancing the machine's operational capabilities.
Implementation Method 1
each spaced apart pair of the magnets are mounted with N-N or S-S facing poles thereby generating a monopole magnetic field in the rotor operating space
Implementation Method 2
The rotor frame provides a plurality of radially oriented, toroidally wound coils fully immersed within slots of the rotor frame that are adjacent to the magnet pole faces
Data Source
AI summary
A rotating electromagnetic apparatus has a stator frame supporting spaced apart pairs of permanent magnets which are arranged with like magnetic poles mutually facing. A toroidally shaped rotor frame is radially wound with a plurality of wire coils immersed within slots in the in rotor frame, the slots positioned adjacent to the opposing magnets. An electromechanical commutator is used to direct current between an outside source or sink through brushes to rotating multiple contacts simultaneously. The brushes are triangular in cross section. The coils may be connected in series or parallel interconnection.