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Mochida T.,Industrial and Social Infrastructure Systems Company | Yamamoto N.,Industrial and Social Infrastructure Systems Company | Goda K.,Mechanical Engineering Research Laboratory | Matsushita T.,Hitachi Ltd. | Kamei T.,Industrial and Social Infrastructure Systems Company
Hitachi Review | Year: 2010

OVERVIEW: Hitachi supplied 174 cars to consist of 29 train sets for the Class 395 universal AC/DC high-speed trains able to transfer directly between the UK's existing network and High Speed 1, the country's first dedicated highspeed railway line. The Class 395 was developed by applying technologies for lighter weight and higher speed developed in Japan to the UK railway system based on the A-train concept which features a lightweight aluminum carbody and self-supporting interior module. Hitachi is also responsible for conducting operating trials to verify the reliability and ride comfort of the trains and for providing maintenance services after the trains start operation. The trains, which formally commenced commercial operation in December 2009, are helping to increase the speed of domestic services in Southeast England and it is anticipated that they will have an important role in transporting visitors between venues during the London 2012 Olympic Games.


Miyazaki T.,Industrial and Social Infrastructure Systems Company | Fukushima Y.,Hitachi Ltd. | Hirata K.,Energy and Environmental Solutions Center | Fujiwara T.,Industrial and Social Infrastructure Systems Company | Dolan B.,Power Systems Group
Hitachi Review | Year: 2010

Investment in development remains strong in the oil and gas industry due to the long-term augmentation of energy consumption evident in the global market, while the industry also faces urgent issues which include the sustainable and effective use of finite energy resources, new efforts to develop unexploited sources of energy, and the acquiring of interests to these resources. In recent years, the requirements for the oil and gas production plants that support these developments have included reducing life cycle costs and achieving a high level of plant efficiency, moreover minimizing CO2 emissions for environmental conservation. Hitachi is responding to market needs through initiatives aimed at increasing the value of specific products by measures such as developing technology and improving the efficiency of key equipment and systems and offering total solutions that integrate energysaving technologies accumulated from past involvement in various different fields, while also contributing to global warming prevention, reducing the burden on the environment, and similar objectives.


Kawano H.,Industrial and Social Infrastructure Systems Company | Sakai T.,Hitachi Ltd. | Saito Y.,United Environment & Energy, Llc | Murai D.,Energy Solutions Center | And 2 more authors.
Hitachi Review | Year: 2010

Calls to reduce emissions of greenhouse gases, particularly CO2, to combat global warming have strengthened in recent years and companies are taking steps to cut their emissions. Hitachi has responded to these market conditions with solutions for improving environmental performance and reducing CO2 emissions that it supplies globally.


Yokosuka Y.,Institute of Electronics | Nagasu M.,Industrial and Social Infrastructure Systems Company | Oda T.,Hitachi Ltd. | Sakamoto H.,Industrial and Social Infrastructure Systems Company | And 2 more authors.
Hitachi Review | Year: 2010

As greater attention is paid to environmental problems, high expectations are being placed on the role of railways as a means of transport that by its nature places a light impact on the environment. Hitachi is working on technical developments that will further enhance this characteristic of low environmental burden. For diesel trains, Hitachi has developed a hybrid drive system that tests indicate will provide up to about 20% better energyefficiency than current diesel engines and that is being developed further and introduced into practical use in Japan. Hitachi has also developed and confirmed the effectiveness of systems that make effective use of regenerative electric power on electrified sections by storing unused regenerative electric power in lithium-ion batteries so that it can be supplied back to powering trains. For carbodies, Hitachi is working on initiatives that include the adoption of lightweight energy-efficient designs that use an aluminum body structure and saving on resources by using recycled aluminum. Hitachi is also deploying environmentally conscious trains globally that incorporate these technologies.


Yokosuka Y.,Industrial and Social Infrastructure Systems Company | Higaki H.,Industrial and Social Infrastructure Systems Company | Nagasu M.,Industrial and Social Infrastructure Systems Company | Abe Y.,PS4 Unit | Ishikawa K.,Railway Vehicle Unit
Hitachi Review | Year: 2010

Hitachi is committed to system development in the railway industry, targeting a reduction in operating costs and environmental concerns, for a comfortable and attractive railway services in Japan. The company's initiatives in this direction include increasing the speed of the E5 Series Shinkansen bullet train to 320 km/h to extend its services to Shin-Aomori, reducing time of travel in the Tokyo region. Hitach is also committed towards the commercialization of high-voltage 2-kV IGBTs and IGBT inverters for railway applications that use these devices. The company is developing hybrid traction systems using lithium-ion batteries for railway applications, allowing energy savings by transferring the power generated by regenerative braking to nearby trains able to consume this power. Hitachi is also developing performance evaluation techniques such as 3D CAD that use thermofluid analysis of entire product units including small components.


Kimijima N.,Industrial and Social Infrastructure Systems Company | Takahashi H.,Industrial and Social Infrastructure Systems Company | Kawabata I.,Industrial and Social Infrastructure Systems Company | Matsuo S.,Industrial and Social Infrastructure Systems Company
Hitachi Review | Year: 2010

OVERVIEW: Since first gaining experience with the Inuyama Monorail that commenced operation in 1962, Hitachi has been a supplier of key monorail system products both in Japan and overseas including vehicles, track switches, transformer systems, and automatic train supervision systems. The Palm Jumeirah Transit System is a monorail system designed based on the track record and experience that Hitachi has built up over many years. Entering operation in April 2009, the system is the first monorail to be installed in the Middle East and the first guided transportation system to be operated in the United Arab Emirates, and as a new symbol for Palm Jumeirah island, the system is in active use as a means of transportation for island residents and tourist visitors.


Shimada M.,Industrial and Social Infrastructure Systems Company | Oishi R.,Industrial and Social Infrastructure Systems Company | Araki D.,Industrial and Social Infrastructure Systems Company | Nakamura Y.,Industrial and Social Infrastructure Systems Company
Hitachi Review | Year: 2010

OVERVIEW: Hitachi is working on the development of energy-saving systems for rolling stock that use lithium-ion batteries to help reduce the environmental impact of railway systems. Two issues associated with regenerative braking are regenerative braking under light load conditions and limits on performance due to motor characteristics, and in response Hitachi has developed respectively an absorption of regenerative electric power function and a regenerative brake with effective speed extended function, proposed an efficient regeneration management system for determining when to operate these functions, and is currently commercializing these technologies. For the function to absorb regenerative electric power, Hitachi has developed the wayside B-CHOP system and on-board sequential regenerative brake system to provide systems that are appropriate to the line and other operating conditions where the system is to be installed. Hitachi will continue to enhance the functions of its energy-efficient systems to meet diverse customer needs.


Kurihara N.,Industrial and Social Infrastructure Systems Company | Tachihara S.,Industrial and Social Infrastructure Systems Company | Minamide K.,Industrial and Social Infrastructure Systems Company | Yamaguchi S.,Industrial and Social Infrastructure Systems Company
Hitachi Review | Year: 2010

OVERVIEW: As part of our social infrastructure, the VVVF inverters used in rolling stock need to achieve a high degree of safety and reliability along with economical performance in the form of energy efficiency and low maintenance. With the growth of environmental awareness in recent years, environmental performance has also become a key factor. In response to these demands, Hitachi has developed a new generation of reduced-size high-performance inverters. The key concepts behind this development are compatibility with next-generation technologies and improved environmental performance. This development also includes the use of high-speed serial communications, next-generation in-vehicle communication systems, a new vector control technique which can drive high-efficiency motors, and reduction in size and weight by applying a snubberless design. An analysisdriven design methodology using analysis tools was adopted for important development criteria.


Tadokoro H.,Information and Control Systems Company | Onishi M.,Hitachi Ltd. | Kageyama K.,Hitachi Ltd. | Kurisu H.,Industrial and Social Infrastructure Systems Company | Takahashi S.,Yokohama Research Laboratory
Hitachi Review | Year: 2011

OVERVIEW: Water is essential to our way of life and international water-related issues include its short supply and uneven distribution. How to use water in a way that is in harmony with nature and the water cycle and how to reduce the emission of greenhouse gases associated with water treatment are also of concern. To resolve these issues and establish infrastructure for water that is safe and gives users easy access to water and confidence in its quality, Hitachi has proposed the "intelligent water system" concept. This concept aims to perform comprehensive management of the water cycle at a regional or city level based on the ideas of harmony, sustainability, and self-reliance by adopting more intelligent individual technologies including water recycling and other water treatment technologies, information technology, and monitoring and control technology, and by implementing water cycle traceability in a way that treats the water cycle as a "flow of both water and information".


Okuma N.,Hitachi Ltd. | Nakayama Y.,Hitachi Ltd. | Tsuzuki K.,Hitachi Ltd. | Matsui S.,Hitachi Ltd. | And 2 more authors.
Hitachi Review | Year: 2010

The 21st century has been called the "water century" and there are forecasts that predict the global water business will have a market size of 100 trillion yen in 2025. Hitachi is actively pursuing its water infrastructure business which is one of its social innovation businesses. The Global Water Recycling and Reuse System Association, Japan was established in 2009 by Japanese companies in the water business to support their aims to expand globally and Hitachi's role in the Association is virtually as an operational company engaging in practical measures. Meanwhile, other leading-edge initiatives being pursued through research commissioned by New Energy and Industrial Technology Development Organization include projects on "demonstration study of an integrated systems business for reuse of seawater, fresh water, sewage, and other wastewater" in Japan and demonstration study of a small-scale distributed water circulation business in emerging regions such as the Middle East.

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