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The First Set of Industrialized Combined Co-phase Power Supply in the World Put into Use2015-01-26

On January 17, 2015, CCTV News Channel formally reported the first set of three phases combined co-phase power supply in the world has been put into use successfully in heavy haul railway project of Shanxi Line. The project was jointly developed by Southwest Jiaotong University, Dongfang Hitachi and Shanghua Electric, among whom Dongfang Hitachi was responsible for the development of converter, the most important core component.
 

The success of the project not only indicates that Dongfang Hitachi is leading the world in the co-phase power supply technology, but also indicates that the co-phase power supply technology with full proprietary intellectual property rights has entered the engineering application phase, with one solid step taken towards the application of traction power supply in single-phase power frequency electrified railways.
 

Co-phase power supply can eliminate the necessity of the split phase in overhead line system in power substation outlets, and enhance the security and reliability of train operation, power supply capacity and line transport capacity, while saving energy and capacity and improving power quality with revolutionary technical progress and outstanding economic and social benefits.
 

One set of 5MW/27.5KV co-phase power supply converter developed by Dongfang Hitachi, as the key component of the whole system for energy transfer and conversion, assumes the core missions of supplying active current, reactive current, harmonic compensating current, engine energy feedback for 27.5KV traction network. By virtue of strong scientific research capabilities, top-grade product design concepts, abundant product design experience, Dongfang Hitachi established a top technical team to complete the research, development and modeling of the product in only one year. The excellent technological performance and reliability of the product on site have received high evaluation and unanimous confirmation from leaders and experts from China Railway Corporation, the Third Railway Survey and Design Institute Group Corporation and Southwest Jiaotong University, laying a solid foundation for market development of our company in the field of 27.5KW high voltage railway equipment.
 

Without small steps, one can not cover a thousand mile journey; without small streams, there can be no oceans or seas. Dongfang Hitachi will continue to put customer demands at the core place, keep moving forward in technological innovation and dedicate to returning more perfect products to our customers.

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