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The adjustable-speed drive is attractive for pump, compressor, and other centrifugal load applications due to its flexibility and high operating efficiency, compared with the conventional constant-speed drive system. This paper has developed a converter-based starting method for a doubly fed induction machine (DFIM) with centrifugal loads by constant volts/hertz control, instead of using the additional...
The 400 Hz medium frequency power supply is a key component feeding the critical loads on ships and airplanes. In order to solve some problems met in the existed system, this paper developed a complete mathematical model and operation strategy for the doubly fed induction machine (DFIM) based motor-generator frequency conversion system, including the process of starting, grid synchronization and vector-controlled...
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