Solid-State Transformer (SST) Industry Snapshot 2025-2026 — Trihope Technical Brief
Solid-State Transformer (SST) Industry Snapshot — 2026 Update
What is SST?
A Solid-State Transformer (also called Power Electronic Transformer, PET) is an AC–AC/AC–DC conversion system using high-frequency isolation via power electronics (typically SiC/GaN) instead of traditional laminated iron cores. It performs voltage transformation, galvanic isolation, and power conditioning in a single compact unit.
Key Market Drivers
- AI Data Centers:NVIDIA's shift to 800V HVDC architecture (Rubin Platform, ~2027) requires medium-voltage direct-to-800V conversion — a natural fit for SST (10kV AC → 800V DC, >98% efficiency).
- Grid Modernization:Enables flexible interconnection of renewables, storage, and microgrids with grid-forming (GFM)
- Policy Support:China's Energy Saving Equipment Development Plan (2026–2028)explicitly lists large-capacity SST as a priority technology.
Recent Industry Highlights (2025–2026)
|
Company |
Highlight |
|
Eaton (USA) |
Launched 2.5MW Medium-Voltage SST (10kV→800V DC), 278 kW/m³ power density |
|
Chint / TBEA / CET (China) |
Multiple 2.4–5MW SST prototypes field-tested; some pilot commercial phase |
|
Siemens / GE Vernova |
Actively developing utility-grade SST platforms for T&D applications |
|
Startups (Heron, DG Matrix) |
Secured >$100M funding; targeting hyperscale data center deployments |
Typical SST Architecture
- AC/DC Rectifier(Medium Voltage, SiC-based)
- High-Frequency DC/AC Inverter(kHz range)
- High-Frequency Isolation Transformer(compact ferrite/core wound)
- DC/AC or DC/DC Output Stage(regulated, often 400V/800V DC)
Note: The high-frequency isolation transformer inside SST still requires precision winding, vacuum impregnation, and strict dielectric testing — areas where traditional transformer manufacturing know-how applies.
Outlook
- 2026:Demonstration & early pilot rollouts (data centers, campus microgrids)
- 2027–2028:Accelerated adoption in hyper-scale DC and smart distribution networks
- CAGR (2025–2030):Estimated 25–35% for SST-related power electronics & magnetic components
Trihope Perspective
While SST represents a paradigm shift from conventional 50/60Hz transformers, its high-frequency magnetic components share common manufacturing requirements — precision winding, controlled tension, vacuum processing, and partial discharge testing. Trihope continues to monitor SST standardization and explores equipment adaptation for next-generation magnetic core winding and test systems.
Contact for technical discussion:
Overseas Marketing Dept. | Shanghai Trihope (Transformer Home)
📧 trihope@aliyun.com | www.transformer-home.com
Source: Transformer-Home