Superconducting Magnetizer Cooling With Heat Pipe and Cryocooler
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Solution Overview
Problem
Conventional resistive magnetizers for electrical machines with permanent magnet rotors require excessive power supply and complex thermal management, leading to inefficiencies and high operational costs.
Innovation Solution
A superconducting magnetizer with a thermal shield and heat transfer device, including a heat pipe, is used within a vacuum chamber, supported by a structural arrangement, and cooled by a cryocooler, minimizing power and thermal management requirements.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Power
If conventional resistive magnetizers are used, then magnetic field generation is achieved, but power supply requirements and thermal management requirements increase excessively
Solution Approach 1:
The patent changes the operating temperature parameter from ambient to cryogenic levels, enabling the magnet coils to operate in superconducting state. This parameter change eliminates electrical resistance, thereby reducing power supply requirements and thermal management complexity while maintaining magnetic field generation capability
Solution Approach 2:
The patent employs superconducting materials with specific critical temperature characteristics as composite material solution. These materials enable the system to achieve both magnetic field generation and reduced power/thermal requirements by operating below their critical temperature threshold
2Use of energy by moving object
If superconducting magnet is used, then power supply needs are reduced, but cooling requirements are introduced
Solution Approach 1:
The patent implements self-cooling through the magnet's own operational cycle. The magnet is cooled during idle periods and maintains superconducting state during operation, eliminating the need for continuous external cooling and reducing overall energy consumption
Solution Approach 2:
The patent employs periodic cooling cycles where the magnet is cooled to superconducting temperature during non-operational periods, then operates in superconducting state during magnetizing pulses. This periodic action minimizes continuous cooling requirements while maintaining energy efficiency
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 superconducting magnetizer reduces power supply needs and thermal management complexities, enabling efficient magnetic field generation with minimal energy consumption and cooling requirements.
Implementation Method 1
A superconducting magnet is disposed within the thermal shield and configured to generate a magnetic field in response to an electric current supplied to the superconducting magnet
Implementation Method 2
A heat transfer device comprising at least one of a thermal conduction device, and a heat pipe is disposed contacting the superconducting magnet
Implementation Method 3
A heat transfer device comprising at least one of a thermal conduction device, and a heat pipe is disposed contacting the superconducting magnet
Implementation Method 4
A cryocooler is coupled to the heat transfer device and configured to cool the superconducting magnet via the heat transfer device
Data Source
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AI summary
A superconducting magnetizer (10) includes a thermal shield (14) disposed within a vacuum chamber (16). A superconducting magnet (12) is disposed within the thermal shield (14) and configured to generate a magnetic field in response to an electric current supplied to the superconducting magnet (12). A heat transfer device (25) comprising at least one of a thermal conduction device (20), and a heat pipe (22, 32) is disposed contacting the superconducting magnet (12). A cryocooler (26) is coupled to the heat transfer device (25) and configured to cool the superconducting magnet (12) via the heat transfer device (25).