Design of a High Power Brushless Linear Variable Transformer

High power variable transformers are required for use in advanced high voltage high power laboratories. However, their design is always confronted with various difficulties caused by different physical and electromagnetic design constraints. This paper presents a new design for a high power brushless linear variable transformer. The proposed design has desirable features such as low short circuit impedance which may be useful for different tests particularly high current tests, over a wide range of power requirement. An analytical design procedure is followed, after which a finite element analysis is used to confirm the analytical design results.