Generator Rotor Coil Cooling Baffles for Heat Dissipation
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Solution Overview
Problem
Generator rotor coils generate heat during operation, which can lead to diminished performance if not adequately cooled.
Innovation Solution
The system includes a stator and rotor with groups of coils having ducts and subslots in fluid communication, where a baffle directs coolant into the ducts to facilitate heat transfer, with various baffle configurations and duct arrangements to optimize coolant flow and heat dissipation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Power
If rotor coils are used to generate electrical current, then power output is improved, but heat generation increases causing diminished performance
Solution Approach 1:
The patent introduces coolant as an intermediary substance that flows through ducts in the rotor coils and subslots in the rotor body. The coolant absorbs heat from the rotor coils through thermal conduction and convection, transferring thermal energy away from the coils without interfering with the electrical power generation function. This mediator approach resolves the contradiction by providing a heat transfer pathway that maintains both power output and acceptable temperature levels.
Solution Approach 2:
The patent employs a fluid cooling system where coolant (liquid or gas) is circulated through the rotor structure. The hydraulic/pneumatic flow of coolant through the ducts and subslots provides continuous heat removal from the rotor coils. The fluid dynamics principles enable efficient heat transfer and dissipation, allowing the system to maintain high power output while controlling coil temperature through active fluid-based thermal management.
2Temperature
If cooling structures are added to the rotor, then heat dissipation is improved, but device complexity increases
Solution Approach 1:
The patent divides the rotor cooling system into multiple discrete segments: ducts within the rotor coils, subslots in the rotor body, and baffles positioned at specific locations. This segmentation allows each component to be optimized independently for its specific cooling function while maintaining overall system integration. The modular segmented structure achieves effective heat dissipation without requiring a completely redesigned complex rotor architecture.
Solution Approach 2:
The patent implements localized cooling features where ducts are positioned within specific rotor coil regions, subslots are created at particular locations in the rotor body, and baffles are placed at strategic positions to direct coolant flow to areas of highest heat generation. This local quality approach ensures that cooling resources are concentrated where most needed, achieving effective heat dissipation without uniformly complicating the entire rotor 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 configuration effectively transfers heat from the coils, preventing overheating and maintaining generator performance by ensuring efficient coolant flow and heat dissipation, particularly at the end portions of the rotor.
Implementation Method 1
a first baffle disposed in one of the plurality of subslots for directing a coolant into at least one of the plurality of ducts
Implementation Method 2
effectively transfers heat from the coils, preventing overheating and maintaining generator performance
Data Source
AI summary
Systems are disclosed that assist in cooling generator rotor coils. In one embodiment, the system includes a stator; a rotor positioned within the stator, the rotor having: a spindle; groups of coils disposed about the spindle, each of the groups of coils including a plurality of ducts; a plurality of subslots disposed about the spindle, each of the plurality of subslots extending between the spindle and one of the groups of coils, wherein each of the plurality of subslots is in fluid communication with the one of the groups of coils; and a first baffle disposed in one of the plurality of subslots for directing a coolant into at least one of the plurality of ducts.