Abstract
The distribution of disk output voltage is a key factor for the design of an insulated core transformer (ICT) high-voltage power supply. The development of an ICT involves the design and optimization of many parameters, which greatly affect the uniformity of disk output voltage. A new ICT structure with dummy primary windings can compensate for the disk output voltage, which aims to improve uniformity. In this work, an optimization method based on a particle swarm optimization (PSO) algorithm was used to optimize the design parameters of an ICT with dummy primary windings. It achieved an optimal uniformity of disk output voltage and load regulation. The design parameters, including the number of secondary winding turns and the compensation capacitance, were optimized based on the finite-element method (FEM) and Simulink circuit simulation. The results show that the maximum non-uniformity of the disk output voltage is reduced from 11.1% to 4.4% from no-load to a full load for a 200 kV/20 mA HUST-ICT prototype. Moreover, the load regulation is greatly reduced from 14.3% to 9.6%. The method improves the stability and reliability of the ICT high voltage power supply and greatly reduces the design time.
Highlights
We developed a 200 kV/20 mA HUST-insulated core transformer (ICT)
The accuracy of the finite-element method (FEM) model was verified by comparing test data of the HUST-ICT prototype with the simulation results, and consistent results were verified in MATLAB/Simulink
The particle swarm optimization (PSO) algorithm was proposed for optimizing the design parameters of ICT
Summary
Publisher’s Note: MDPI stays neutral with regard to jurisdictional claims in published maps and institutional affiliations. Increasing the number of secondary winding turns is commonly used to ensure that the disks’ output voltage is as consistent as possible. The non-uniformity of the disk output voltage was small under no-load, it was larger under a full load Both σ0 and σ1 are expected to be less than 10% to ensure reliable operation in industrial production systems. Dummy primary winding produces a greater excitation effect on the upper secondary windings than on the lower ones It creates a complementary effect with the primary winding and helps to improve the uniformity of the disks’ output voltage. In the light of the discussion above, the design parameters of an insulated core transformer with a dummy primary winding (DICT) were optimized based on the PSO algorithm in this research.
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