Electromagnetic Module Removal via Shared Cooling Channel Guide
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Solution Overview
Problem
Electromagnetic components in electrical machines, such as permanent magnet modules and stator windings, are difficult to remove due to strong electromagnetic forces, complicating maintenance and manufacturing, especially in large generators like those used in wind turbines.
Innovation Solution
Utilizing axially extending grooves in neighboring electromagnetic modules to form cooling channels that also serve as pathways for rods to counteract electromagnetic forces, allowing for the sliding removal or insertion of these components without compromising structural integrity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If large air cooling channels are provided in electromagnetic modules, then cooling efficiency is improved, but structural strength is weakened
Solution Approach 1:
The patent combines the cooling channel function with the rod insertion pathway by forming the cooling channel between adjacent electromagnetic modules. The rod passes through this shared cooling channel to counteract electromagnetic forces, eliminating the need for separate large cooling channels and thus maintaining structural strength while providing adequate cooling.
2Temperature
If electromagnetic modules are designed with separate cooling channels, then cooling function is improved, but device complexity increases
Solution Approach 1:
The cooling channel formed between adjacent electromagnetic modules serves dual purposes: it provides the cooling pathway for thermal management and simultaneously acts as the insertion pathway for the rod used to counteract electromagnetic forces during assembly and disassembly. This multi-functionality reduces device complexity by eliminating redundant structures.
3Reliability
If electromagnetic components are held firmly in the electrical machine, then reliability is improved, but ease of repair deteriorates
Solution Approach 1:
The rod acts as an intermediary tool that temporarily counteracts the electromagnetic forces holding the electromagnetic modules in place. By inserting the rod through the cooling channel, maintenance personnel can overcome the strong electromagnetic attraction and easily remove or install modules without requiring excessive force or complex disassembly procedures, thus improving ease of repair while maintaining operational reliability.
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 method enhances cooling efficiency, optimizes magnetic flux, and improves electrical efficiency by reducing the need for additional channels, thereby maintaining the structural integrity and facilitating easier maintenance of electromagnetic modules.
Implementation Method 1
electromagnetic components may be attracted by other electromagnetic components. For example, electromagnetic components associated with the stator are generally electromagnetically attracted by the electromagnetic components associated with the rotor
Implementation Method 2
air cooling channels may be formed in permanent magnet modules or in stator segments
Data Source
AI summary
In a first aspect, a method for removing an electromagnetic module from an electrical machine is provided. The electrical machine comprises a plurality of electromagnetic modules having an electromagnetic material. The electromagnetic modules comprise base and a support extending from the base and supporting the electromagnetic material. The base comprises a bottom surface and a first side surface. The first side surface comprises an axially extending groove defining a cooling channel with an axially extending groove of a first side surface of an adjacent electromagnetic module. The method comprises inserting a rod in a cooling channel formed by the groove of the electromagnetic module to be removed and a groove of an adjacent electromagnetic module; releasing the electromagnetic module to be removed from a structure of the electrical machine; and sliding the electromagnetic module to be removed along the rod.