Abstract
The Japanese government stipulates that they will promote the maximum introduction of renewable energies and plan to place them as major power source in the 6th Strategic Energy Plan approved in a Cabinet meeting in October, 2021. Wind power is one of the most expected renewable energies, however, wind turbine repair tends to take a long time in Japan due to the location far from Europe where wind turbine manufacturers are mainly present. FZG micropitting test and modified FZG scuffing test were conducted in accordance with a hypothesis considering a turbulence impact on gear damage of gearbox, and it was demonstrated that a suitable gear oil for Japan’s climatic factors suppressed gear tooth surface wear better than a gear oil approved by European wind turbine gearbox manufacture. In addition, Idemitsu participates in an international joint working group for revision of IEC 61400-4 as a representative of Japanese committee and acts so that the standard will take wind conditions of Japan into account. Currently we are challenging a NEDO project to develop next generation lubricants for wind turbine which contribute stable operation and maintenance cost reduction of Japan’s wind farm by making full use of some state of the art technologies.
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