Abstract: There are several ways to reduce the ripple magnitude for direct torque-controlled permanent magnet synchronous motor (PMSM) drives. In this work, the compensated duty ratio optimized direct ...
This undated photo shows the world's most powerful direct-drive floating wind turbine in Fuqing, East China's Fujian province. [Photo/China Huaneng Group/Handout via Xinhua] BEIJING -- China has ...
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