On the afternoon of August 26, 2026, the Symposium on Power Supply Safety and Energy Efficiency for AIDC, hosted by SUNKING.TECH Group, was successfully held in Shenzhen. Centering on improving power‑supply safety and energy efficiency for AIDC in the AI era, the event focused on cutting‑edge technologies including solid‑state circuit breakers, solid‑state transformers, power semiconductors and power electronics capacitors. It gathered more than 70 guests from China and abroad, including technical experts, scholars, customers, partners, media representatives and researchers, to jointly explore pathways for ensuring power‑supply safety and boosting energy efficiency for data‑center power systems in the high‑power‑consumption AI era.

Michael Geissimann, CEO of Astrol, a subsidiary of SUNKING.TECH, delivered the opening keynote speech titled Solid‑State Circuit Breakers: Power Protection for Next‑Generation AI Data Centers. Drawing on Astrol’s more than ten‑year project experience in marine solid‑state DC circuit breakers, the company plans to build a large‑scale production base in Jiashan, China. He highlighted the all‑new B‑platform solid‑state circuit breaker. Optimized for 800 V DC data‑center systems, this product covers current ratings from 125 A to 10 000 A. Adopting IGBT and silicon‑carbide (SiC) devices, it features microsecond‑level fast breaking capability, a modular rack‑mount design and plug‑and‑play support. The presentation analyzed protection requirements at different levels of AIDC cabinets, racks, energy‑storage units and cluster power distribution networks. It also shared overseas practical experience for power protection of computing infrastructure by referencing ring‑network and redundant busbar protection practices for marine DC power grids. At present, marine and rail‑transit variants of the B‑platform are undergoing certification tests, with mass production scheduled for next year. The data‑center variant will deliver its first batch of prototypes by the end of this year.

Professor Zhao Biao from Tsinghua University and Huairou National Laboratory gave a keynote speech entitled Innovative Practices of Solid‑State Transformers for the Construction of New‑Type Power Systems. As the lead drafter of international standards for power electronic transformers, Professor Zhao illustrated the application value of solid‑state transformers across scenarios such as new‑energy power generation, DC power transmission, AIDC power supply and heavy‑duty truck ultra‑fast charging. He elaborated on the all‑DC collection solution for large‑scale new‑energy bases: DC networking can avoid challenges related to AC synchronous stability, reduce voltage transformation stages and improve transmission efficiency. His research team has adopted a medium‑frequency high‑power‑device technical route to enhance system reliability by increasing single‑module capacity and cutting device count. National‑level demonstration projects of 50 MW in Qinghai and 200 MW in Xinjiang have been put into operation. He also compared trade‑offs in efficiency, footprint and cost between SiC high‑frequency schemes and medium‑frequency high‑power schemes, and shared engineering solutions including series‑connected devices and breaker‑less current interruption for systems. His speech bridged technical connections between new‑type power systems and AI computing infrastructure.

Lars Knoll, CEO of SwissSEM, another subsidiary of SUNKING.TECH, presented a keynote titled Empowering the AI Era: Advanced Power Semiconductors and Modules for Solid‑State Transformers and Data Centers. Based on industry statistics on market trends, he noted that while SiC devices are seeing robust growth, silicon‑based IGBTs still deliver irreplaceable value in many applications. He introduced the company’s in‑house‑developed IGBT and SiC MOSFET technologies, with special focus on three new products debuted in PCIM Nuremberg this year: the 2300 V XP high‑voltage module, the 1200 V / 1400 V Easy2B module, and the 1200 ED high‑current Pin‑Fin module. For SiC devices, wafer defect‑screening processes are deployed to guarantee parameter consistency for multi‑chip parallel connections and raise module yield rates. Targeting 800 V DC AI data‑center power supplies, solid‑state transformers and solid‑state circuit breakers, he described development progress and high‑yield implementation paths for 2300 V SiC devices. A compact bidirectional switch module will be launched. He further analyzed trade‑offs between conduction loss and system cost for 1200 V and 1700 V devices, and outlined technical evolution trends for power semiconductors used in computing‑power power supplies.

Yu Zhiqiang, General Manager of Ningbo Hairong Electric, a subsidiary of SUNKING.TECH, gave a special report on Technological Development of Film Capacitors under Wide‑Band‑Gap Device Applications. He pointed out that the higher operating frequencies of wide‑band‑gap devices bring challenges such as increased capacitor losses, uneven current distribution and large internal hot‑spot temperature differences. Combined with the self‑healing properties of metallized film capacitors, he analyzed pain points including stray inductance and current drift among parallel components. Proposed solutions cover optimizing current distribution on film surfaces, upgrading metal‑spraying processes, adopting symmetrical busbar designs, deploying new materials and integrating liquid‑cooled heat dissipation. Engineering verifications have proven these measures effectively lower temperature rise and narrow temperature deviations inside components. He also outlined development directions such as integrated packaging, novel dielectric materials and intelligent online monitoring. He stressed that high‑frequency high‑power applications call for collaborative customized development across the industrial chain, shared ideas for supporting innovations of capacitors, and described R&D directions and engineering practices for next‑generation film capacitors intended for AIDC deployments.

Against the backdrop of rapid iteration in AI computing power, AIDC facilities are imposing unprecedented stringent requirements on power‑supply reliability and power‑conversion efficiency. Hosted by SUNKING.TECH, this symposium has built a Sino‑foreign platform for industry‑university‑research exchanges. By exchanging technical insights around key equipment such as solid‑state circuit breakers, solid‑state transformers, power semiconductors and film capacitors, the event injects new momentum into collaborative innovation within the AIDC power‑supply industrial chain and supports the safe, efficient and high‑quality development of  AIDC industry.