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Recently, analog control is replaced by digital control in cycloconverter-fed adjustable speed drives. However, cycloconverter has many thyristors and control signals. Multi-CPU has to be adopted for its complexity. In this paper, main circuit is redesigned due to multi-phase. An interstar winding method is used in insulating transformers to supply 12-phase(More)
Polyphase synchronous motors used as propelling motor in ships have a broad application foreground. It is necessary to research polyphase motor variable speed system. In this paper, the vector control strategies of 12-phase cycloconverter-fed synchronous motor are presented based on the analysis of 12-phase cycloconverter-fed synchronous motor with air(More)
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