High-voltage transformer

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.