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Moog Pitch System in Guodian United Power Technology Wind Turbines Completes First Low Voltage Ride Through (LVRT) Testing in China

East Aurora, New York, USA. – Moog Industrial Group, a division of Moog Inc. (NYSE: MOG.A and MOG.B) and a leader in providing blade pitch control, slip ring and rotor monitoring solutions for the wind energy industry, recently supported Guodian United Power Technology Co., Ltd., a member of China Guodian Corporation, to complete the first Low Voltage Ride Through (LVRT) Testing for a wind turbine in China. The tested wind turbine is located in Guodian Shuanglong Wind Farm in Jilin Province of North China. All 33 wind turbines in this farm are equipped with Moog Wind Turbine Pitch Systems that meet LVRT requirements and have been operating stably for six months.

Low Voltage Ride Through (LVRT) is a functionality required of wind turbines when the voltage in the grid is temporarily reduced due to a fault or load change in the grid. LVRT is defined in grid codes for specific countries. To comply with regulations all the electrical equipment including pitch control systems should meet LVRT requirements during grid faults. The LVRT testing for the Guodian United Power wind turbine was jointly conducted by China Electric Power Research Institute (CEPRI), the first and only test institute that has obtained international mutual recognition for wind turbine testing qualification in China. CEPRI first introduced advanced testing technology from Germany into LVRT testing and ensured that the tested wind turbine meets the grid safety requirements.

“China has abundant wind energy resources and improving the grid connection capability is one of the top issues for the Chinese market as it is required to maintain grid stability,” said Sean Gartland, Moog’s general manager for the Asia Pacific Region. “We are honored to have made a contribution to this breakthrough testing by providing high performance pitch control solutions for Guodian United Power, our major customer and strategic partner in China. Strong local engineering, manufacturing and service capability enables us to respond rapidly to wind turbine customer needs in China,” added Gartland. Moog has been in China for more than 20 years, since 1997, with manufacturing facilities and offices in Shanghai, Beijing and Hong Kong. In 2009, Moog added 3,500 square meters of manufacturing space dedicated to wind turbine solutions in Shanghai.

Moog incorporates LVRT capabilities into the design of its blade pitch control systems to ensure predictable, stable behavior for wind turbines even during grid faults. Blade pitch systems control motion in large mainstream wind turbine generator systems, enabling efficient use of wind energy and ensuring safety in the event of catastrophic failures. Moog Wind Turbine Pitch Servo Drives used in our Pitch Systems are designed to operate under extreme temperature conditions within switch cabinets in wind turbine rotor hubs, guaranteeing reliable operation. Another key benefit is the ability to withstand extremely high mechanical loads in rotating turbines, while improving turbine operating efficiency.

About Guodian United Power Technology Co., Ltd.

With its corporate headquarters located in Beijing, Guodian United Power Technology Co. Ltd. (Guodian UPC) owns four wholly-owned subsidiaries and three holding companies. It has five production bases in Baoding, Lianyungang, Chifeng, Baotou and Yixing, focusing on the manufacturing and R&D of wind power equipment. The company’s main business includes large-scale wind turbine design and R&D as well as manufacturing, sales and services.

“The State Key Laboratory of Wind Turbine and System Technology” is the top R&D and service organization in the wind power technology field in China. UPC receives strong technological support from this organization to introduce and assimilate advanced technology. The company also innovates independently as demonstrated by the invention of its low and ordinary temperature 1.5 MW series fans. Currently, the company is developing large-scale 3 MW and 5 MW wind turbines with independent intellectual property rights.

The UPC wind turbines are widely spread across provinces, municipalities and autonomous regions in China, including Xinjiang, Inner Mongolia, Hebei, Shandong, Liaoning, Jilin, Shanxi, and Jiangsu. With the utilization rate of the running turbines higher than 97%, the company holds a leading position in Chinese and foreign markets.

GDUPC is currently making substantial efforts aimed at developing China’s green energy capabilities by encouraging a low-carbon society, as well as making itself a reliable domestic wind turbine brand. For more information, please visit http://www.gdupc.com.cn.

About Moog Industrial Group

Moog designs and manufactures high performance motion control solutions combining electric, hydraulic, and hybrid technologies with expert consultative support for OEMs, wind farm operators and integrators in the wind energy market. We help performance-driven companies design and develop their next-generation turbines. Moog Industrial Group is a part of Moog Inc. (NYSE: MOG.A and MOG.B), which has 60 locations worldwide and sales of USD 1.849 billion in fiscal year 2009. For more information please visit www.moog.com/wind.