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15MW solar project in Japan uses Delta's 20kW PV inverters

Posted: 20 Jan 2015 ?? ?Print Version ?Bookmark and Share

Keywords:Delta Electronics? inverter? solar plant? Takara Leben? PV?

Delta Electronics Inc. has revealed that Japan-based Takara Leben has chosen Delta's 20kW photovoltaic (PV) inverters for the country's first large-scale distributed solar PV power plant connected to an extra-high voltage power transmission line using string PV inverters. The 15MW solar project is projected to generate nearly 21,000,000kWh of electricity per year, enough to power 3,700 homes.

The solar power plant, located in a former golf course covering about 400,000m2 in Nakagawa-machi, Nasu-gun, Tochigi Prefecture, Japan, is being developed by Takara Leben that procured 750 units of Delta's RPI-M20A PV inverters due to their flexibility over traditional centralised PV inverters.

The RPI-M20A PV inverters can withstand adverse environmental conditions due to their IP65 waterproof casing, dust detection mechanism and salt water anti corrosion structure, which are deemed necessary in areas such as Tochigi Prefecture. In addition, their versatility for this distributed solar PV project is significant given the particular shape of the old golf course land where the number of solar panels that can be installed in each hole area differs from one another.

RPI-M20A PV inverter

Delta RPI-M20A PV inverter

According to Delta, the RPI-M20A PV inverters feature high energy conversion efficiency (Japan Industrial Standard-JIS: 97.5 per cent) resulting in higher power output and higher electricity sales by the PV plant. In addition, the devices are suitable for installation in outdoors without the need to invest in shelter infrastructure. They also do not require additional cooling equipment, which results in better OPEX and CAPEX savings, noted the company.

The inverters also promise to maximise system power generation via the built-in string monitoring mechanism, saving the cost of monitoring equipment. Delta also stated that the compact, easy to install, versatile and eco-friendly devices have no need for DC string combiner box, diversifying electronics malfunction risks while improving easy maintenance.

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