Superconducting Coil Charging With Time-Division Chopper Circuits
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Solution Overview
Problem
Power supply devices and leads capable of handling large currents for superconducting coils are costly, making DC magnetic field generation devices using superconducting coils expensive.
Innovation Solution
A DC magnetic field superconducting coil power supply device with a power supply device, multiple chopper circuits, and a controller that operates these circuits in a time-division manner, using MOSFET switches and a low-resistance switch to reduce the required current capacity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Power
If a power supply device and leads capable of handling large currents are used to charge the superconducting coil, then the superconducting coil can be charged to generate a high magnetic field, but the cost of the power supply device and leads increases significantly
Solution Approach 1:
The patent divides the charging process into multiple segments by using multiple chopper circuits that operate in parallel. Each chopper circuit handles a portion of the charging task, allowing the system to achieve high current capability through parallel operation of multiple lower-current components rather than requiring a single high-current power supply and leads
Solution Approach 2:
The patent employs periodic switching action through chopper circuits that repeatedly turn on and off during the charging process. This periodic switching allows gradual current increase in the superconducting coil while using power supply equipment with lower current ratings, as the chopper circuits accumulate charge over multiple switching cycles
2Power
If a power supply device and leads capable of handling large currents are used to charge the superconducting coil, then the charging process can be completed, but the size of the power supply device and leads becomes large
Solution Approach 1:
The patent segments the power supply system into multiple chopper circuits connected in parallel, where each circuit uses smaller-sized components rated for lower currents. The collective output of these multiple smaller circuits achieves the required high current capability without requiring any single component to be large
Solution Approach 2:
The patent combines multiple chopper circuits in parallel configuration, merging their individual current outputs to achieve the total required current. This merging allows the system to attain high current handling capability while keeping individual component sizes small, as the current from multiple sources is combined at the output
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 allows for a low-cost implementation of DC magnetic field generation devices by reducing the current requirements of the power supply device and leads, thereby lowering the overall cost and size of the system.
Implementation Method 1
a plurality of chopper circuits connected in parallel between one end of the power supply device and one end of the superconducting coil
Implementation Method 2
DC magnetic field generation device using a superconducting coil
Implementation Method 3
a low-resistance switch configured to short-circuit both ends of the superconducting coil
Implementation Method 4
the superconducting coil and the plurality of chopper circuits may be installed inside a cooling container
Data Source
AI summary
Provided is a DC magnetic field superconducting coil power supply device using a superconducting coil at low cost. A DC magnetic field superconducting coil power supply device 1 comprises: a superconducting coil 17; a power supply device 11 configured to supply a DC voltage; a plurality of chopper circuits 13 connected in parallel between one end of the power supply device 11 and one end of the superconducting coil 17; and a controller 18 configured to control the plurality of chopper circuits 13, wherein the controller 18 is configured to operate the plurality of chopper circuits 13 in a time-division manner when charging the superconducting coil 17.