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Nantong Shengyang Electric Co., Ltd.., is a comprehensive enterprise, that combines research, manufacture, sales, and service as a whole; has offices in Beijing, Shanghai, and Hong Kong; and has built up a complete service system. Our production base is located in Shuanglou industrial zone, Haian City, Jiangsu province which lies north of the beautiful and rich Yangtze River delta, east of the Yellow Sea, south of Yangtze, and also close to Nantong, Yangzhou, and Taizhou airports. Xinchang Railway, Ningqi Railway, G15 Shenhai Highway, and Qiyang Highway intersect here. 204 and 308 national ways are passing through our factory. All of the above prove that we have obvious regional advantages that are suitable for water, land, and air transportation.
We are a professional China ODM Special Transformers manufacturers and PHASE-SHIFT RECTIFIER TRANSFORMER suppliers, Our factory specializes in the manufacture of power transformers, rectifier transformers, Box-type transformer substations, wind power transformers, and its complete sets of products. We occupiers an area of 26500m2, of which the construction area is 13800m2; the fixed investment is RMB 35,800,000; We have many main product equipment and full sets of inspection equipment, such as vacuum drying system, automatic vacuum casting system, corrugated oil tank product line, slitting line, horizontal cutting line and automatic foil winding machine and son on. Our technology is strong, the manufacture process is advanced, and equipment and testing modes are complete.
The phase-shifting rectifier transformer is a crucial device that supplies multi-phase rectified power for medium and high-voltage inverters. As frequency conversion and speed regulation technologies mature, the need for locally produced phase-shifting rectifier transformers becomes increasingly urgent. To address this demand, a series of multi-winding phase-shift rectifier transformers have been successfully developed based on advanced non-encapsulated dry-type transformer technology. These transformers have found successful applications in numerous projects.
The extended triangle phase-shifting principle is employed in these transformers. By utilizing multiple secondary windings with varying phase-shift angles, they can create rectifier transformers with an equivalent number of phases, such as 9, 12, 15, 18, 24, and 27. The primary side of the transformer is directly connected to the high-voltage power grid. On the secondary side, multiple windings with varying phase angles are used. The angles, represented as (60-0), etc., indicate the phase shift angle of each low-voltage three-phase winding relative to the third-class winding. When each phase is connected in series through n H-bridge units (where n = 60/n), multiple inputs are achieved, resulting in 6n pulse rectification. This approach ensures that if the power of each H-bridge unit is balanced and current amplitudes are the same, the theoretical input current on the grid side will not contain the next harmonic of 6n+1, thereby improving the power factor. Typically, no reactive compensation or harmonic filtering devices are needed.
These transformers are ideally suited for environments with high fire protection requirements and large load fluctuations. Such environments include offshore oil platforms, thermal power plants, water treatment plants, metallurgical and chemical industries, mining, building materials, and other special working conditions.
The multi-winding phase-shifting rectifier transformer is designed to cater to different users, with capacity options ranging from 300kVA to 3500kVA. They feature a large primary impedance, high transformer efficiency (over 98%), a Class H insulation system, and a temperature rise limit of 120°C for high and low-voltage windings. The shape and structure of these transformers can be customized according to user requirements to meet specific installation needs.
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