Core Insights - The article discusses the advancements in Solid State Transformers (SST) technology and its implications for the power and data center industries, highlighting the competitive landscape and key players involved in the development and application of SST technology [2][3]. SST Progress and Fundamentals - SST technology shows significant potential in data centers and renewable energy sectors, with NVIDIA's Rubin architecture likely to adopt SST earlier than the expected supply timeline of late 2027 or early 2028 [2]. - North American SST orders have high profitability, with gross margins reaching 50-55%. The demand for transformers in overseas data centers currently exceeds supply, leading to order fulfillment cycles of 9-12 months, and up to 18 months for major North American manufacturers [2]. Domestic and International Manufacturer Layouts - Various global manufacturers are actively advancing SST technology. Eaton, a leader in the VIGC field, has introduced energy router power supply architectures and is accelerating entry into emerging markets through acquisitions [3]. - Delta has launched HBDC power solutions based on third-generation silicon carbide devices, which are adaptable to data center load requirements and facilitate integration with renewable energy systems [3]. - In China, companies like Sifang, Xidian, and Jinpan Technology are expanding into SST technology, leveraging their technical strengths to explore commercial applications in data centers and renewable energy [3]. Jinpan Technology - Jinpan Technology has shown robust performance in the first half of 2025, with significant growth in its electromechanical business and a 64% year-on-year increase in overseas revenue [4]. - The company has successfully secured contracts for data center projects in Malaysia and anticipates an annual compound growth rate of approximately 80% in data center revenue from 2022 to 2024 [4]. - Jinpan has developed a 2.4 MW solid-state transformer prototype suitable for HVDC800V power supply architecture, laying the groundwork for further expansion into overseas markets and AIDC sectors [5]. Other Key Players - Eagle and New Special Electric have accumulated technology in phase-shifting transformers and are actively developing SST technology to meet data center demands [6]. - Sungrow Power Supply has made significant breakthroughs in photovoltaic inverters and is expanding into new applications, including data center HVDC power supply systems [7]. - Weiguang Energy, supported by Baiyun Electric Group and Xi'an Jiaotong University, focuses on SST energy routers and has delivered 92 units for various applications [8]. - Teradyne has demonstrated strong technical and supply chain advantages in charging stations and SST fields, leveraging its experience in power electronics [9]. Conclusion - The SST technology landscape is rapidly evolving, with numerous companies making strides in research and application, indicating a promising future for the integration of SST in data centers and renewable energy systems [2][3][4][5][6][7][8][9].

Core Points - Zhao Zhangming, a renowned expert in power electronics and electrical engineering, passed away on September 3, 2025, at the age of 66 [1][5]. Group 1: Academic and Professional Background - Zhao was born in February 1959 in Shaoyang, Hunan Province, and obtained his bachelor's and master's degrees from Hunan University in 1982 and 1985, respectively, followed by a PhD from Tsinghua University in 1991 [3]. - He served as a professor at Tsinghua University, where he held positions such as Deputy Director of the Department of Electrical Engineering and Vice Director of the National Key Laboratory for Safety Control and Simulation of Power Systems and Large Power Generation Equipment [3]. Group 2: Contributions and Achievements - Zhao was the editor-in-chief of the "Chinese Journal of Electrical Engineering" and held various leadership roles in professional organizations, including the IEEE Power Electronics Society [4]. - He made significant contributions to the field of power electronics, particularly in large-capacity power electronics, renewable energy photovoltaic generation, and integrated systems [4]. - Zhao led the first major project in power electronics funded by the National Natural Science Foundation and developed several key technologies, including medium-voltage frequency converters and photovoltaic grid-connected converters [4][5]. Group 3: Awards and Publications - He received multiple prestigious awards, including three first prizes for scientific achievements from the Ministry of Education and three first prizes from the China Electrotechnical Society [5]. - Zhao published over 600 academic papers, authored nine scientific books, and held more than 100 invention patents and 30 software copyrights [5]. Group 4: Industry Impact - Zhao served as an independent director for listed companies such as Huichuan Technology and Tonghe Technology, influencing the industry through his expertise [5].

Core Points - Zhao Zhangming, a renowned expert in the field of electrical engineering, passed away on September 3, 2025, at the age of 66 [1][2] Group 1: Academic and Professional Background - Zhao Zhangming was born in February 1959 in Shaoyang, Hunan Province, and obtained his bachelor's and master's degrees from Hunan University in 1982 and 1985, respectively, followed by a PhD from Tsinghua University in 1991 [3] - He served as a professor at Tsinghua University, held the position of deputy director of the Electrical Engineering Department, and was the deputy director of the National Key Laboratory for Safety Control and Simulation of Power Systems and Large Power Generation Equipment [3] Group 2: Contributions and Achievements - Zhao was the editor-in-chief of the "Chinese Journal of Electrical Engineering" and held various leadership roles in professional organizations, including the vice-chairman of the Power Electronics Society of the China Electrotechnical Society [4] - He was recognized as an international expert in power electronics and motor fields, contributing significantly to the development of large-capacity power electronics, renewable photovoltaic power generation, and integrated systems [4] - Zhao led the first major project in the field of power electronics funded by the National Natural Science Foundation and developed several key technologies, including medium-voltage frequency converters and photovoltaic grid converters [4][5] Group 3: Awards and Publications - He received multiple prestigious awards, including three first prizes for scientific achievements from the Ministry of Education and three first prizes from the China Electrotechnical Society [5] - Zhao published over 600 academic papers, authored nine scientific books, and held more than 100 invention patents and 30 software copyrights, making significant contributions to the development of electrical engineering in China [5] Group 4: Industry Involvement - Zhao served as an independent director for listed companies such as Huichuan Technology and Tonghe Technology, indicating his influence in the industry [5]

Core Points - Professor Zhao Zhangming, a renowned expert in power electronics and electrical engineering, passed away on September 3, 2025, at the age of 66 [1][3]. Group 1: Academic and Professional Background - Born in February 1959 in Shaoyang, Hunan Province, Professor Zhao obtained his bachelor's and master's degrees from Hunan University in 1982 and 1985, respectively, and earned his Ph.D. from Tsinghua University in 1991 [3]. - He served as a professor at Tsinghua University, held the position of deputy director of the Department of Electrical Engineering, and was the deputy director of the National Key Laboratory for Safety Control and Simulation of Power Systems and Large Power Generation Equipment [3]. Group 2: Contributions and Achievements - Professor Zhao was the editor-in-chief of the "Chinese Journal of Electrical Engineering" and held various leadership roles in professional organizations, including the IEEE Power Electronics Society [4]. - He made significant contributions to the field of power electronics, particularly in large-capacity power electronics, renewable energy photovoltaic generation, and integrated systems [4]. - He developed key technologies such as medium-voltage frequency converters and photovoltaic grid-connected converters, and created the first domestically developed general-purpose power electronics industrial simulation software, DSIM, which has been adopted by over 200 organizations in 15 countries and regions [4][5]. Group 3: Awards and Recognition - Professor Zhao received multiple prestigious awards, including three first prizes for scientific and technological achievements from the Ministry of Education and three first prizes from the China Electrotechnical Society [5]. - He published over 600 academic papers, authored nine scientific books, and held more than 100 invention patents and 30 software copyrights, significantly contributing to the development of electrical engineering in China [5]. Group 4: Personal Attributes and Legacy - He was remembered as a kind-hearted individual with a broad mind, dedicated to his work, and a role model for educators [5]. - Professor Zhao served as an independent director for listed companies such as Huichuan Technology and Tonghe Technology, further influencing the industry [5].

Core Viewpoint - The article highlights the successful implementation of a flexible microgrid system in Tai'an, Shandong, which utilizes solar energy and energy storage to enhance energy efficiency and reduce carbon emissions in industrial parks [1][2]. Group 1: Microgrid Technology - The microgrid system integrates energy routers, flexible interconnection devices, and intelligent control technologies to provide clean and stable power supply [1]. - The system employs direct current (DC) power supply from solar energy, eliminating traditional AC-DC conversion, thus improving safety and efficiency [1]. - The microgrid has achieved a 100% utilization rate of green electricity, saving over 5 million yuan in electricity costs and reducing CO2 emissions by over 9,300 tons annually [1]. Group 2: Collaboration and Innovation - The Tai'an Group collaborates with Tsinghua University to develop energy routers based on third-generation semiconductors, overcoming key technical challenges and achieving international leading standards [1]. - The microgrid system is designed to enhance flexibility and controllability, integrating zero-carbon buildings, medium and low-voltage interconnections, and energy storage solutions [1]. Group 3: Broader Implications and Future Plans - Tai'an City is promoting the expansion of microgrid technology from single-point demonstrations to comprehensive coverage, establishing a technical innovation alliance in the microgrid field [2]. - The city has implemented 21 demonstration projects, with 10 already operational, collectively consuming approximately 26 million kilowatt-hours of green electricity and reducing carbon emissions by about 20,000 tons [2]. - Future plans include building a unique industrial ecosystem combining green equipment manufacturing, green power production, and carbon asset management to support high-quality development of smart microgrids [2].