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Special Feature
Newsletter "SEI WORLD" 2017 Vol. 474

Sumitomo Electric Group Energy-related Products

Global energy consumption has grown an average of 2.6% per year since 1965 along with the growth of the economy*1.

In the meantime, however, global warming and air pollution caused by increased energy consumption and associated greenhouse gas emissions have become serious problems. To address these conflicting issues, countries are urgently taking measures to improve efficiency in both energy production and energy consumption; meaning increased use of renewable energy and improved efficiency in power generation, while saving energy by improving power transmission facilities. This article features our products that are contributing to the solution of these problems.

*1
According to publications by the Ministry of Economy, Trade and Industry and the Agency for Natural Resources and Energy (2015)

(1) sEMSA™ <Factory-use systems>

This is an energy management system to optimize energy use at offices and factories. Introducing sEMSA™ makes it easy to monitor and analyze energy consumption, in addition to collecting and accumulating information about off-grid power sources such as renewable energy, including solar-power generation facilities and storage batteries, enabling status monitoring and optimum control. These excellent functions maximize the energy efficiency of the users.

Concentrator photovoltaic (CPV) system

Concentrator photovoltaic (CPV) system

The system utilizes a power generating element made of a compound semiconductor with high efficiency in the conversion of solar energy into electric power, and thus generates power efficiently. In addition, mounting the CPV module*2 on a pedestal that accurately tracks the daily movement of the sun increases power generated per panel surface compared with conventional crystalline silicon solar cells, thereby demonstrating excellent power generating capacity in a high insolation environment.

*2
Concentrator photovoltaic (CPV)

String monitoring system for mega-watt solar power generation plants

String monitoring system for mega-watt solar power generation plants

This is a monitoring system to visualize photovoltaic generation status and failures, if any. Attaching electric current sensors to each string*3 makes it easy to identify failure locations, minimizing power generation loss, and contributing to the development of a stable power generation system.

*3
A unit of serial solar panels

Redox flow battery

Redox flow battery

This is a type of rechargeable flow battery utilizing vanadium ion redox (reduction and oxidation) reactions. Its long service life and structure of non-flammable materials assure a high level of safety. The technology is expected to help control the unstable supply of renewable energy, such as solar and wind power, and ensure stable use of energy.

(2) sEMSA™-Home <Home-use systems>

This is an energy management system to optimize energy use at home. The system consists of a controller installed in a house, a cloud server, and a smartphone app, utilizes energy resources in a household, such as solar panels, batteries, water heaters, electric vehicles and plug-in hybrid vehicles, and optimizes power use at a home.

Lithium-ion storage system POWER DEPO™

Lithium-ion storage system POWER DEPO™

This is a home-use storage system equipped with long-life, high-capacity lithium-ion batteries. The system is connectable with a photovoltaic generation system, equipped with an uninterruptible power supply function that instantly switches the mode from power storage to power supply, as well as a function to optimally control the power to be charged according to the consumption of electrical appliances, thus efficiently using home energy.

Sensor

Sensor

Some sensors can not only turn the power on and off, but also control power consumption.

(3) - Some of our power cable products -

Submarine / underground cables

Submarine / underground cables

Sumitomo Electric produces and globally lays long-distance high-capacity submarine cables by utilizing its unique DC insulation technology. In addition, with its extensive AC cable lineup and business record, the company is involved in underground power transmission in cities and renewable energy power transmission. Sumitomo Electric contributes to the development of power transmission and distribution infrastructure not only in Japan, but also all over the world.

Superconducting power cables

Superconducting power cables

The Sumitomo Electric Group is committed to the development of superconducting cables using bismuth superconducting wires, which have zero electrical resistance. Superconducting cables have little electrical resistance, minimize energy loss during transmission, and contribute to energy saving.

In addition, due to the downsized construction compared with conventional cables for the same power transmission capacity, superconducting cables are expected to produce a space-saving benefit in the installation of underground cables in cities.

Virtual power plant demonstration project

A virtual power plant is a system that enables an aggregator (business operator in charge of controlling power sources) to remotely monitor and control electric facilities scattered in a grid system via the Internet, to suppress or create electric demand. The system absorbs drastic fluctuations in generating capacity of renewable energy, such as growing solar power generation, and contributes to the balancing of electric supply and demand. Amid the deregulation of electric utilities and the reform of electric systems, Sumitomo Electric participates in this demonstration project sponsored by the Ministry of Economy, Trade and Industry toward the development of a foundation for efficient use of energy, and thus contributes to the realization of new energy management.


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