Current research projects

Image Innovative cryogenic cooling system for the recondensation / liquefaction of technical gases up to 77 K
Image Breakthrough Sensor for Adsorption Filters (BelA)
Image Investigation of coolants
Image Software modules
Image Non- invasive flow measurements
Image Innovative Manufacturing Technologies for Cryosorption Systems
Image Lifetime prediction of hermetic compressor systems
Image Development of a Cryogenic Magnetic Air Separation Unit
Image Brine (water)-water heat pump
Image Micro heat exchangers in refrigeration
Image Air-water heat pumps
Image Cryogenic liquid piston pumps for cold liquefied gases like LIN, LOX, LHe, LH2, LNG, LAr
Image Testzentrum PLWP at ILK Dresden
Image Low noise and non metallic liquid-helium cryostat
Image Cryostats, Non-Metallic and Metallic
Image Energy efficiency consulting - cogeneration systems

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Intelligent innovative power supply for superconducting coils

Dr. Andreas Kade

+49-351-4081-5117

Compact, powerful power supply with 4-quadrant converter

The aim of the R&D project is the development of an intelligent innovative power supply as a 4-quadrant controller and energy storage device, which consists of a communicating system between quench protection and current flow control at the superconductor. The development shall be characterized by safety, compactness, accuracy, user friendliness, good price-performance ratio and modularity. The combination of cryogenic and warm electronics will provide significant advantages.
The functional model developed and constructed for this purpose has the following parameters and properties:

  • 4-quadrant power supply with ± 25 V and ± 14 kA
  • Constant voltage quench protection system
  • Cryogenic switch (cryogenic)
  • Energy storage system

The components for the energy storage system consists of individual cells with a capacity of 3000 F and a voltage of 2.7 V. 51 modules are connected in parallel, each with 10 individual cells, to form a capacitor bank. This results in a capacity of 15,300 F and a voltage of 25 V. A 3 kA, 30 V device serves as power supply, which has already been successfully tested on a cryogenic power supply.
In the next step, the configured capacitor modules for the energy storage and the boards of the 4-quadrant controller, see Figure 1, were combined in three switch cabinets, see Figure 2. The completed switch cabinet is shown in Figure 3. First results were presented at the 16th Cryogenics in October 2021.
 


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Further Projects

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ZeroHeatPump

Performance management of small heat pumps without energy consumption

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Mass Spectrometer

Determining the composition of gas mixtures in the high or ultra-high vacuum range

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Tensile and compression testing

Determination of yield strength, tensile strength and elongation at break