Stator Coil Insulation Channels for Integrated Cooling
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Solution Overview
Problem
Existing electrical machines, particularly generators, face challenges in temperature control due to the complexity and cost of using gas or fluid pipes for heat dissipation, which can reduce thermal conductivity and increase the risk of electrical short circuits, affecting efficiency and service life.
Innovation Solution
A coil arrangement with a laminated core and spaced coil units, where the electrical insulation unit forms a fluid channel for temperature control fluid, eliminating the need for separate pipes and focusing on improved thermal conductivity to prevent short circuits and enhance temperature control.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If water pipes or heat pipes are used to dissipate heat from coil units, then temperature control is improved, but electrical insulation complexity increases and thermal conductivity decreases
Solution Approach 1:
The patent combines the electrical insulation function and the heat dissipation function into a single integrated component. The insulation unit between adjacent coil units contains embedded cooling channels that directly contact both the coil units and the insulation material, eliminating the need for separate water pipes and reducing electrical insulation complexity while maintaining effective temperature control.
Solution Approach 2:
The insulation unit serves multiple functions simultaneously: it provides electrical insulation between adjacent coil units, structurally supports the coil arrangement, and acts as a heat dissipation pathway through its embedded cooling channels. This multi-functionality reduces the overall number of components and simplifies the system architecture.
2Temperature
If water pipes or heat pipes are used for heat dissipation, then temperature control is improved, but manufacturing complexity increases
Solution Approach 1:
The cooling channels are integrated directly into the insulation units during the insulation unit manufacturing process, rather than requiring separate installation of water pipes. This merging of functions simplifies the assembly process and reduces manufacturing complexity while ensuring proper thermal contact between the cooling channels and coil units.
Solution Approach 2:
The insulation units are designed to inherently provide both insulation and cooling functions without requiring additional external components or complex assembly procedures. The embedded cooling channels are self-contained within the insulation units, making the system easier to manufacture and assemble.
3Temperature
If separate pipes are used for temperature control, then thermal conductivity is improved, but device complexity and cost increase
Solution Approach 1:
The patent eliminates separate water pipes by integrating cooling channels directly into the insulation units. The insulation material itself becomes part of the thermal management system, reducing the total number of parts while maintaining effective thermal conductivity pathways from the coil units to the cooling fluid.
Solution Approach 2:
The insulation units serve dual purposes: electrical insulation and thermal management. By embedding cooling channels within the insulation units, the system achieves both functions with a single component rather than requiring separate insulated pipes, thereby reducing device complexity and part quantity.
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 solution simplifies production, reduces parts, and improves thermal conductivity, ensuring efficient temperature control and extended service life of electrical machines while preventing short circuits.
Implementation Method 1
the fluid channel is configured to carry a temperature control fluid for temperature control of the coil arrangement
Implementation Method 2
at least one electrical insulation unit, which is arranged between the first coil unit and the second coil unit and is designed for electrical insulation to prevent an electrical short circuit between the first coil unit and the second coil unit
Implementation Method 3
Electrical machines, especially generators, are based on the fundamental physical principle of electromagnetic induction
Data Source
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AI summary
Coil arrangement (1) for an electrical machine, for example for a generator, in particular for a generator of a wind turbine (100), the coil arrangement (1) comprising: a laminated core (10), in particular a stator laminated core or a rotor laminated core, with teeth (11), in particular with stator teeth or with rotor teeth, which are spaced apart from each other in a circumferential direction (U), a first coil unit (20) and a second coil unit (30) arranged spaced apart from the first coil unit in a circumferential direction (U), wherein the first and second coil units (20, 30) are arranged at a distance (D, D1, D2) from each other, wherein the first and second coil units (20, 30) each at least partially wind a tooth (11) of the laminated core (10), and at least one electrical insulation unit (40) which is arranged between the first coil unit (20) and the second coil unit (30) and is designed for electrical insulation. is,to prevent an electrical short circuit between the first coil unit (20) and the second coil unit (30), characterized in that the electrical insulation unit (40) has or forms a fluid channel (41), wherein the fluid channel (41) is designed to carry a temperature control fluid for the temperature control of the coil arrangement (1).