phase-shifting rectifier transformer
Product Introduction
The phase-shifting rectifier transformer is a device that provides multi-phase rectifier power supply for medium and high voltage inverters. Especially with the mature development of frequency conversion and speed regulation technology, the localization of phase-shifting rectifier transformer is urgently needed. To meet the market demand, a series of multi winding phase-shift rectifier transformers have been successfully developed on the basis of the leading product non encapsulated dry type transformer technology and have been successfully applied in many projects. It adopts the extended triangle phase-shifting principle. Through multiple secondary windings with different phase-shifting angles, it can form rectifier transformers with equivalent number of phases of 9, 12, 15, 18, 24 and 27. The primary side of the transformer is directly connected to the high-voltage power grid, and its secondary side has multiple three-phase windings θ °,..., (60-0) °, etc. represent the low-voltage three-phase windings at the secondary side of the extended delta connection transformer, and also represent the phase shift angle of the line voltage of each low-voltage three-phase winding relative to the third class winding. When each phase is connected in series by n H-bridge units, θ= 60 °/n, multiple inputs are realized, and 6n pulse rectification is formed. In this way, if the power of each H-bridge unit is balanced and the current amplitude is the same, the theoretical input current on the grid side does not contain the next harmonic of 6n+1, and the power factor can be improved. Generally, reactive compensation and harmonic filtering devices are not required. It is most suitable for use in environments with high fire protection requirements and large load fluctuations, such as offshore oil platforms, thermal power plants, water plants, metallurgical and chemical industries, mining and building materials and other special working environments. The multi winding phase-shifting rectifier transformer is designed according to different users. Its capacity is divided into 300, 400, 500, 600, 700, 800, 900, 1000, 1250, 1500, 1750, 2000, 2500, 3000 and 3500kVA. The primary impedance is large, the efficiency of the transformer is more than 98%, Class H insulation system is adopted, and the temperature rise limit of high and low voltage windings is 120K. The shape and structure of multi winding phase-shifting rectifier transformer are various, which can be determined according to the user's requirements. The shape and structure of multi-winding phase-shift rectifier transformers.
Performance characteristics
1.High mechanical strength, high resistance to short circuits, safe and reliable operation;
2.low noise, small size, easy installation, maintenance-free;
3.High insulation level, low partial discharge and long product life;
4.Moisture resistance, thermal shock resistance, strong fire resistance.
COMPANY PROFILE:
AN HUANG is a modern company of professional design and manufacturer of 3.6kV to 40.5kV Medium Voltage cable accessories, electric components and whole set cabinet Subsidiaries:Anhuang Electric Power Technology Co.,Ltd
Zhejiang Anhuang Imp & Exp. Co .. Ltd. We provide high quality, low cost products for utility systems worldwide
Company constantly introducing new technology,newcraft, the product structure constantly improved.Our Professional
production testing equipment.special production technology and professional service team can satisfy the customers demand.
Our professioal engineers,technicansand managers team always keep our promise:ANHUANG is not only provide cost-effective high quality products.but also provide high quality, efficient, fast service and technical support to ensure customers' require.
Our company obtained international quality management system ccertification for ISO9001,ISO1401,OHSAS18001.
Our company adhenring to the "safety electricity, forever brilliant " as our enterprise's humanism. Willing to work with you hand in hand to build better future.
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