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Power Systems R&D Center

The Power Systems R&D Center opened in January 2010 to promote business development in response to technological innovations in the electric power infrastructure sector (wide applications of renewable energy and advanced electric power infrastructure by using infocommunications technology). More specifically, we are promoting R&D on elemental technologies, products, equipment and systems that are essential for smart grids (future electricity grids).

Redox flow battery

In power systems using renewable energy power generation, storage batteries are useful for power storage/discharge depending on fluctuations in power generation. Redox flow batteries are suitable for irregular, highly fluctuating charge-discharge operation and allows accurate monitoring and power storage control, therefore it is expected as an optimal storage battery for smart grids to effectively use renewable energy sources such as solar and wind. We are promoting its development on a fully commercial basis.

Redox flow battery

PV inverter / POWER DEPO™ III storage battery system

(Left) PV inverter for AC to DC power conversion Additional functions of voltage control and communication solve natural energy problems such as fluctuations in power generation.
(Right) POWER DEPO™ III storage battery system

PV inverter and POWER DEPO™II storage battery system

Superconducting tape

By the formation of high temperature superconducting thin film on our world’s first textured metal substrate with low cost, low magnetism and high strength, our superconducting tape (size: 4 mm width, 150 um thickness) allows us to pass electric current higher than 200A at a liquid nitrogen temperature of -196℃ and expected to be widely applied to superconducting cables, superconducting electromagnets, nuclear magnetic resonance (NMR) equipment and magnetic resonance imaging (MRI) equipment.

Superconducting tape

Concentrator photovoltaic

Concentrator photovoltaic (CPV) has approximately twice the power generation efficiency of silicon solar panels currently on the market because CPV cells are composed of special compound semiconductor materials. In addition, concentrator panels are installed in elevated positions so that usable spaces are provided under them. For these reasons, CPV is expected as a next generation photovoltaic. Our newly developed CPV offers thinner and lighter panels than conventional CPV.

Concentrator photovoltaic

New energy system

Our new energy system architecture (sEMSA™) allows optimal control of distributed power sources such as wide-spreading photovoltaic generation, cogeneration and storage batteries, as well as energy cost reduction. In addition, by gathering energy consumers for an aggregator, unifying energy management and adjusting demand energy through demand response, it allows us to stabilize energy networks and establish beneficial systems.

New energy system

Power line communication system

We are developing communication modules for smart meters and string monitoring systems for mega solar power plants by using power line communication (PLC) and wireless communication technologies. Our string monitoring system has the sensing elements with a current or voltage sensor to measure power generation and the PLC communication elements to transmit sensor data. By utilizing power lines, it allows us to establish low cost, high reliability systems without the need of new communication and power supply lines. We further promote its development with the Internet of Things (IoT).

Power line communication system
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