Hunan Shiming Electric Co., Ltd.

Hunan Shiming Electric Co., Ltd. was established in 2012 and is located at the Hunan University Science and Technology Park in Xiangjiang New Area, Changsha City, Hunan Province. It is a national high-tech enterprise and a specialized, refined, distinctive and innovative little giant enterprise. The company focuses on the research and development, manufacturing, and sales of power electronic products, covering multiple fields including auxiliary power supply for rail transit (high-speed rail, subway), electrification and auxiliary power supply complete systems for special vehicles (construction machinery, railway maintenance vehicles), and power systems (energy storage converters, photovoltaic inverters, ice-melting converters, reactive power compensation), committed to providing customers with high-quality products and overall solutions.
The technical R&D team is led by Academician Luo An from the School of Electrical Engineering at Hunan University, with more than 30 core members. The R&D team includes 1 academician, 2 professors, 4 PhDs, and multiple expert-level senior software and hardware development engineers, structural engineers, and electrical engineers. The team has over 20 years of experience in power electronic product development, and annual R&D expenses account for more than 15% of the company's operating revenue. At present, it has four major technical platforms: high-frequency DC conversion, high-power AC conversion, high-power motor drive, and cloud platform, and has obtained more than 20 patents, more than 10 software copyrights, and multiple software products.
The company has formed a management team with the founder of a ChiNext-listed company as the core talent. After more than 10 years of experience in the rail transit industry and in combination with the ISO9001 quality management system, it has formed a full life-cycle management system for production and after-sales based on 7S, focusing on rail transit + quality and service, ensuring comprehensive product quality. With its quality reputation, the products are highly recognized by customers.
In the field of rail transit, we have become a qualified supplier for high-end manufacturing enterprises such as CRRC Zhuzhou Institute, CRRC Zhuzhou Locomotive, CRRC Sifang Institute, Guangzhou Shentie, CRCC Equipment, Sany Heavy Industry, and Jiangsu Jingwei. At present, the company's high-speed rail products have been installed and operated on more than 500 Fuxing EMU trains, and its subway and urban rail products have been reliably operating in more than 180 subway lines across more than 30 cities including Beijing, Shanghai, Guangzhou, Shenzhen, Changsha, and overseas cities, with more than 20,000 units in operation. The electric traction and auxiliary power supply complete systems have been stably operating in more than 20 sets on Kunming Metro, Zhengzhou Metro, Taiyuan Metro, Hong Kong Metro, Chongqing Metro, Guiyang Metro, CHN Energy Shenhua, Sany and other tractors, engineering vehicles, grinding vehicles, maintenance vehicles, and road rollers.
In the fields of construction machinery, heavy trucks, ships, and mobile power vehicles, we have carried out technological innovation for oil-to-electric conversion, developed electric traction retrofit + DCDC series products, providing customers with comprehensive solutions and maximizing cost reduction and efficiency improvement.
In the power industry, we take energy storage converters as the core and follow a technology route of multi-product extension. The company's self-developed energy storage converters have successively overcome key technologies such as 100μs-level fault recording, 5-millisecond rapid power switching strategy, grid-forming operation technology, and liquid cooling technology, forming modular air-cooled and liquid-cooled series products with single-unit capacity from 105kW to 2.5MW and independent intellectual property rights. It has also developed dedicated energy storage converters suitable for the special requirements of flow batteries, as well as series products of energy storage converters for microgrids, off-grid, and diesel generator applications. At the same time, it has launched two major energy storage system experimental platform products, including a megawatt-level energy storage converter mutual dragging experimental platform and a megawatt-level energy storage battery charge-discharge experimental platform. The company's energy storage converters have been reliably operating in multiple wind and solar energy storage projects led by State Power Investment Corporation, Disaster Prevention Technology, Wasion Energy, China Electric, Beijing Lvfeng, Dali Energy Storage, Kaifeng Times, Hunan Yinfeng, Dongfang Electric, and Digital Grid Research Institute of China Southern Power Grid, covering both power generation-side and user-side application fields. In terms of production capacity, the company has an annual production, manufacturing, and inspection capacity of 2GW of energy storage converters.