Research on Key Technologies of High Power Density Solid-state Transformer Based on Cascade Topology Structure

FU Yunxi; ZHAO Zifan; MO Yike

doi:10.13296/j.1001-1609.hva.2026.01.028

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Research on Key Technologies of High Power Density Solid-state Transformer Based on Cascade Topology Structure

Technical Discussion | 更新时间：2026-04-13

- Research on Key Technologies of High Power Density Solid-state Transformer Based on Cascade Topology Structure
- High Voltage Apparatus Vol. 62, Issue 1, Pages: 223-228(2026)
- 作者机构：
  
  西安理工大学，西安　710000
  陕西送变电工程有限公司，西安　710003
  西安工程大学，西安　710600
- 作者简介：
- 基金信息：
- DOI：10.13296/j.1001-1609.hva.2026.01.028
  CLC：
- Received：01 July 2025，
  
  Revised：2025-09-28，
  
  Published：16 January 2026
- 稿件说明：
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FU Yunxi, ZHAO Zifan, MO Yike. Research on Key Technologies of High Power Density Solid-state Transformer Based on Cascade Topology Structure[J]. High Voltage Apparatus, 2026, 62(1): 223-228.
DOI：

FU Yunxi, ZHAO Zifan, MO Yike. Research on Key Technologies of High Power Density Solid-state Transformer Based on Cascade Topology Structure[J]. High Voltage Apparatus, 2026, 62(1): 223-228. DOI： 10.13296/j.1001-1609.hva.2026.01.028.

摘要

随着电力电子技术与能源互联网的发展，高功率密度固态变压器在智能电网、新能源并网等领域的应用需求日益迫切，而基于级联拓扑的设计是提升其功率密度的关键路径之一，这也对磁心、绕组、绝缘、损耗散热及介质损耗计算等关键技术提出了更高要求。为解决这些问题，文中针对3种电力电子拓扑结构的应用场景，深入探究高功率密度固态变压器的磁心设计、绕组设计、绝缘设计、损耗散热及介质损耗计算等方面相关关键技术研究，通过分析方波的谐波成分进行损耗模拟计算，并结合热仿真校验热点温度，为高密度固态变压器的研发提供理论及技术参考。

Abstract

With the development of power electronics technology and energy internet

the application demand of high power density solid-state transformers in smart grid

new energy grid connection and other fields is increasingly urgent. The design based on cascade topology is one of the key paths to improve its power density

which also sets higher requirements for such key technologies as magnetic core

winding

insulation

loss heat dissipation and dielectric loss calculation. To address these issues

in this paper an in-depth exploration of key technologies releated to the magnetic core design

winding design

insulation design

loss dissipation and dielectric loss calculation for high-power density solid-state transformers in the application secnarios of three power electronic tepologies is performedd.By analyzing the harmonic components of square wave for loss simulation calculations and combining thermal simulation to verify hotpot temperatures

it provides theoretical and technical guidance for the development of high-density solid-state transformers.

关键词

Keywords

references

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