作者: Nathaniel Benedict Hawes , David Allan Torrey
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摘要: A fluid extraction system is presented. The includes a direct current (DC) bus and plurality of sub-systems configured to be electrically coupled the DC-bus. At least one sub-system an electric machine aid in from well. phase windings rotor. at further control rotational speed rotor by selectively controlling supply such that different another other sub-systems. Related method for speeds machines also