湖南大学学报（自然科学版）2025，Vol.52Issue(10)：154-166,13.DOI:10.16339/j.cnki.hdxbzkb.2025215
考虑直流偏磁的磁控配电变压器声振耦合研究
Study on Acoustic-vibration Coupling of Magnetic Control Distribution Transformer Considering DC Bias
摘要
Abstract
To analyze the influence of the special structure of dry-type magnetic control distribution transformer(MCDT)and DC bias on the winding force,core vibration frequency response and acoustic field distribution,this paper theoretically derives the winding vibration response,core magnetostrictive stress and acoustic-vibration coupling equation,and proposes a finite element numerical model of acousto-vibration coupling response under the normal operation of dry-type magnetron distribution transformer.A good agreement between the results from the positioning tests and FE modeling verifies the feasibility of the proposed FE model.Then,the numerical model is used to calculate the influence of DC bias on magnetostriction and sound field distribution under the condition of DC bias.The results show that the windings generally show an inward shrinkage trend under the condition of DC bias,and the core vibrates at a large number of odd harmonic frequencies,such as 50 Hz,and the noise field gradually increases with the increase of DC bias.关键词
电磁力/干式磁控配电变压器/直流偏磁/振动噪声/磁致伸缩Key words
electromagnetic force/dry-type magnetic control distribution transformer/DC bias/vibration noise/magnetostriction分类
动力与电气工程引用本文复制引用
杜志叶,陈智超,陈晓国,占宇,李根..考虑直流偏磁的磁控配电变压器声振耦合研究[J].湖南大学学报（自然科学版）,2025,52(10):154-166,13.基金项目
国家自然科学基金资助项目(52377015),National Natural Science Foundation of China(52377015) （52377015）
南方电网科学研究院重大资助项目(031200KK52222014,GDKJXM20222196),Science and Technology Project of China Southern Power Grid Research Institute(031200KK52222014,GDKJXM20222196) （031200KK52222014,GDKJXM20222196）
