HeWang Electric applies for patents related to inverter control, monitoring cooling system health and operation through temperature and electrical parameter detection.

March 26 News, according to the State Intellectual Property Office, Shenzhen HeWang Electric Co., Ltd. has applied for a patent titled “Converter Control Method, Device, System, and Readable Storage Medium.” The application publication number is CN121710659A, the application number is CN202511869094.0, the publication date is March 20, 2026, and the application date is December 11, 2025. Inventors include Tang Jianping, Huang Taijun, Zhou Dangsheng, Teng Tiebiao, and Huang Fengyi. The classification codes are H02M1/00 and G05D23/30.

Patent Abstract: This application relates to a converter control method, device, system, and readable storage medium. The method includes: determining the maximum actual temperature of the converter from the actual temperature values measured at multiple monitoring points targeting the converter, and obtaining the actual inlet temperature of the converter’s cooling system; based on the maximum actual temperature and the inlet temperature, determining the actual temperature difference; based on the actual electrical parameters output at different times within a preset time window, determining the actual electrical parameter reference value of the converter; obtaining a pre-fitted mapping relationship between electrical parameters and temperature difference thresholds, and according to this relationship, determining the target temperature difference threshold corresponding to the actual electrical parameter reference value; comparing the actual temperature difference with the target threshold to determine the health status of the converter’s cooling system, and controlling the converter’s operating state based on this health status. This method can improve the accuracy of health detection for the converter’s cooling system.

HeWang Electric was established on April 20, 2007, and listed on the Shanghai Stock Exchange on July 28, 2017. The registered address is in Shenzhen, Guangdong Province, with offices also located in Shenzhen. The company is a leading provider of power conversion solutions in China, focusing on core products such as wind power converters, with strong technical capabilities.

HeWang Electric specializes in the field of power conversion, helping customers achieve efficient, reliable, and high-quality power generation, consumption, and transmission. It belongs to the Shenwan industry category of Power Equipment - Wind Power Equipment - Wind Power Components, involving concepts such as energy storage, offshore wind power, and wind energy.

In 2025, HeWang Electric’s revenue was 4.168 billion yuan, ranking 2nd out of 4 in the industry, below the first-place Daikin Heavy Industries with 6.174 billion yuan, slightly below the industry average of 4.198 billion yuan, and above the industry median of 4.064 billion yuan. Its main business includes new energy electrical control at 3.291 billion yuan (78.96%), engineering transmission at 627 million yuan (15.04%), among others. Net profit for 2025 was 541 million yuan, ranking 2nd out of 4, below Daikin Heavy Industries’ 1.103 billion yuan, but above the industry average of 511 million yuan and median of 428 million yuan.

Recent patent applications by Shenzhen HeWang Electric Co., Ltd.:

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