04/10/2013
New Delhi, April 10 -- Japan based Mitsubishi Heavy Industries Ltd filed patent application for wind turbine generator, control method for wind turbine generator, wind turbine generator system, and control method for wind turbine generator system. The inventors are Arinaga Shinji, Wakasa Tsuyoshi and Matsushita Takatoshi.Mitsubishi Heavy Industries Ltd filed the patent application on Dec. 13, 2011. The patent application number is 9829/DELNP/2011 A. The international classification number is F03D 7/04. According to the Controller General of Patents, Designs & Trade Marks, "It is an object to stabilize a utility grid even when an unexpected fluctuation in the frequency of the utility grid occurs. A wind turbine generator (1) includes a rotor (7) that rotates by wind power, a generator (5) that is driven by rotation of the rotor (7) , and a control device (20) that controls a power output of the generator (5) to increase while a rotational speed of the generator (5) decreases when a frequency of a utility grid (13) becomes smaller than or equal to a predetermined rated frequency and when the rotational speed of the generator (5) is greater than or equal to a first predetermined value. In this way, even when the frequency of the utility grid (13) fluctuates, the frequency fluctuation can be suppressed, and the utility grid (13) can be stabilized."
About the Company
Mitsubishi Heavy Industries, Ltd, or MHI, is a Japanese company. It is one of the core companies of Mitsubishi Group. In 1870 Yataro Iwasaki, the founder of Mitsubishi took a lease of Government-owned Nagasaki Shipyard. He named it Nagasaki Shipyard & Machinery Works, and started the shipbuilding business on a full scale. This shipbuilding business evolved into Mitsubishi Shipbuilding Co, Ltd, which became Mitsubishi Heavy Industries, Ltd in 1934. It was the largest private firm in Japan, manufacturing ships, heavy machinery, airplanes, and railroad cars.
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