High-voltage transformer
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ORIGINAL PAPER
High-voltage transformer Jorge A. Gordillo1 Received: 5 November 2019 / Accepted: 21 April 2020 © Springer-Verlag GmbH Germany, part of Springer Nature 2020
Abstract An original electric transformer was developed. The transformer generates a high AC voltage from a low-voltage AC. The input AC voltage generates an axial vibration in the electrodynamic actuator. The axial vibration is transmitted to piezoelectric crystals which are polarized in the axial direction and generates the output voltage. The transformer works at an axial mechanical resonance frequency of the system. Equations that describe the behaviour of the device were found. These equations were validated with measured data. The transformation ratio was obtained from these. Very high transformation ratio can reach this device, indicating the theoretical model. The proposed system is easy to build of reduced dimensions and low cost. Due to the high energy density of piezoelectric materials, high transformation ratio, the high electromechanical coupling factors and the high-quality factor of the mechanical resonance (low damping), it is lighter and more efficient than wire-wound transformers for high transformation ratio. This transformer could be used in devices, such as X-ray machines, electron microscope, solid-state propulsion system, Ion thruster, small particle accelerator and accelerator-driven systems. Keywords Transformers · High-voltage techniques · Piezoelectric materials · X-ray production · Small particle accelerator
1 Introduction The transformers have become essential for the transmission, distribution and utilization of alternating current electrical energy. A varied range of transformer designs is encountered in electronic and electric power applications [1–5]. The invented transformer generates a high AC voltage from a low-voltage AC. The device does not present relevant capacitive and inductive effects at the output (respect conventional transformer), which could prevent working with voltages higher than 10,000 V in medium- and low-power systems [1–3]. For this reason, it could be used in devices, such as X-ray machines, electron microscope, solid-state propulsion system and Ion thruster [6–10]. The proposed system is easy to build of reduced dimensions and low cost. It achieves great transformation ratios in a single step and in a small volume. With this transformer, it would be possible to reach voltages of tens of MV in reduced volumes, achieving these voltages is impossible with conventional systems. Therefore,
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Jorge A. Gordillo [email protected] Laboratorio de Nanotecnología Nuclear, CAC, GAATN, CNEA, Avenida General Paz 1499, B1650KNA San Martín, Pcia. de Buenos Aires, Argentina
this device could also be used as small particle accelerator [1–5]. These particle accelerators are used in a wide variety of applications, including ion implanters for the manufacture of semiconductors, particle therapy for oncological purposes, radioisotope production for medical diagnostics and accelerator mass spectrometers
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