Chan Ye Xin Xi Wang·2025-11-20 01:11Core Insights - Solid-State Transformers (SST) are leading innovations in power transmission and distribution, utilizing power electronics and high-frequency electromagnetic induction principles [1][2] - China has established a well-defined vertical industry chain for SST, with upstream focusing on wide bandgap semiconductors and soft magnetic materials, midstream on modular manufacturing, and downstream on applications in smart grids and data centers [1][6] - The SST industry is transitioning from technology validation to large-scale commercialization, driven by AI computing power and energy transition, despite facing technical bottlenecks [1][12] Industry Overview - SST, also known as Power Electronic Transformer (PET), replaces traditional transformer components with semiconductor devices to achieve voltage transformation and electrical isolation [2][3] - The main types of SST include AC-SST, DC-SST, and Hybrid-SST, each serving different applications from smart grids to data centers [4][5] Cost Structure - The cost structure of SST is heavily concentrated in upstream components, with power electronic devices accounting for approximately 40% of costs, followed by high-frequency transformers, structural cooling, and control systems each at about 15% [8][10] Market Dynamics - The demand for SST is rapidly diversifying, primarily driven by global energy transition and digital infrastructure development, with AI data centers being the largest application segment [11][12] - The Chinese silicon carbide (SiC) market is projected to grow from approximately 1.6 billion yuan in 2024 to 1.91 billion yuan in 2025, indicating strong growth potential [10] Development Status - The SST industry in China is at a critical stage of transitioning from technology validation to commercialization, with challenges including high costs and lack of standards [12][13] - Major companies like China Xidian and TBEA are leading the market, with significant shares in high-end applications [15] Future Trends - The industry is expected to see breakthroughs in material performance and technology, leading to cost reductions and performance improvements [16] - Application scenarios are anticipated to expand from data centers and smart grids to electric vehicle charging and industrial applications [17] - The competitive landscape will evolve, emphasizing technology, capital, and supply chain capabilities, with a focus on domestic material sourcing [18]