从产业一线视角解析 HVDC 投资机会 20250824 摘要 英伟达计划在 2027 年下半年推出全系标配 800 伏方案的 Ruben Ultra 产品，这将推动数据中心 HVDC 技术发展，并要求数据中心提前改造以 支持 800 伏输出，单机柜服务器功率将达到兆瓦级别。 当前市场上主要存在 48 伏供电架构和即将推广的 800 伏 HVDC 架构两 种方案。GB200、GB300 及 Vera Rubin 等服务器采用 48 伏 PSU， 而 Ruben Ultra 将采用 800 伏板载电源，无需传统 PSU。 台达在 OCP 大会上展示了 800 伏架构下的 ACDC 电源边柜方案，内置 ACDC 电源，输出正负 400 伏或 800 伏直流电压，适用于 HVAC 方案， Meta 计划在 2026 年采用类似方案。 HVAC 与 HVDC 产品的主要技术壁垒在于形态差异和布线方式，海外产 品需做成扁平形态以插入机架，并解决散热和电磁干扰问题，台达系公 司在此方面具备优势。 国内企业如巴拿马和中恒正在推进支持 800 伏输出的 AC-DC 电源，中 恒已推出 800 伏半导体能源方案，并在互联网大厂 ...

Group 1 - The divergence between the micro-cap stock index and major indices like the CSI 300 is a recent market characteristic, with the former reaching historical highs while the latter remains in a range-bound state [1][4] - As of May 21, the trading volume of micro-cap stocks accounted for 81% of the total market, the highest level in nearly three years [1] - The micro-cap stock index experienced significant volatility, initially rising over 1% before closing down 1.12%, while the North Stock 50 index fell by 4.38% [1][4] Group 2 - The banking sector showed strength during the trading session, with no individual stocks declining, as analysts noted a negative auction result for the 20-year U.S. Treasury bonds, potentially increasing global risk aversion [3][14] - Historical trends suggest that when micro-cap and large-cap stocks diverge significantly, a convergence in their performance often follows [4] - The Shanghai Composite Index closed near flat, while the Shenzhen Component Index and the ChiNext Index fell by 0.28% and 0.44%, respectively [5] Group 3 - Recent market activity has seen a rotation of hot sectors, with solid-state batteries and HVDC (High Voltage Direct Current) technologies gaining attention, particularly after Navitas announced a partnership with NVIDIA [7] - The power equipment sector saw significant gains, with stocks like Zhongheng Electric and Tonghe Technology rising by 9.99% and 8.05%, respectively [8] - The third-generation semiconductor sector is experiencing heightened activity, driven by advancements in GaN and SiC technologies, which are crucial for high-performance applications [9][10] Group 4 - The banking sector is expected to attract more capital due to increased interest from insurance funds, which are encouraged to invest more in equities [14] - The defensive value of the banking sector is highlighted amid ongoing risk aversion, with limited pressure on interest margins, indicating a stabilizing fundamental outlook for the industry [14]