High-voltage power supplies of the «StabIst» series

Currently, X-ray machines are widely used in various industries. They are used to study the structure of materials, evaluate the internal structure of parts of components and mechanisms, as well as for non-destructive testing of various technological operations. One of the key components of X-ray machines is the high-voltage power supply in combination with the X-ray tube. There are two design schemes for their construction: monoblock and cable. A monoblock device is characterized by placing an X-ray tube and a high-voltage power source in one housing. In a cable machine, the X-ray tube is connected to a power source using a high-voltage cable. Each of the schemes has its own advantages and disadvantages. Its choice depends on the requirements for the design of the device. Purpose of the work: Development of a stabilized high-voltage power source for X-ray tubes as part of a cable apparatus. Materials and methods: During the design, programs were used to simulate processes occurring in electronic circuits using the SPICE (Simulation Program with Integrated Circuit Emphasis) algorithm. The basis of the source was an inverter voltage converter, built on power bipolar transistors according to a full bridge circuit with an insulated gate. This approach made it possible to simplify the power part of the electrical circuit of the source, increasing its overall efficiency. A solid-state compound with increased thermal conductivity was used as high-voltage insulation, which made it possible to limit it to forced air cooling and place its structure within the dimensions of the Rack Mount standard. Results: The result of the work was a stabilized high-voltage power supply with a voltage of 50 kV, a power of 2 kW, and a total weight of 27 kg. Conclusion: In connection with the departure of Western manufacturers from the Russian market of high-voltage power supplies, broad prospects are opening up for the use of domestic developments both in the creation of new models and in operating X-ray devices. Operating experience has shown that the developed high-voltage power supply is not inferior to the best foreign analogues in its electrical and weight-size parameters.

Authors: A. S. Dmitriev, A. D. Kuleshov, N. N. Potrakhov, Yu. N. Potrakhov, K. K. Guk

Direction: Physics

Keywords: X-ray tube, high-voltage stabilized power supply, cable X-ray machine

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