Vector control and fuzzy logic control of doubly fed variable speed drives with DSP implementation

Field orientation control and fuzzy logic control are designed for variable speed drive systems with a doubly-fed machine in a slip power recovery configuration. Laboratory implementation with a general purpose DSP (digital signal processing) system is described and experimental results are given. High performance potential of a slip power recovery system is realized with these advanced controls, while flexible reactive power control becomes possible, and compared to the ordinary variable speed drives with singly-fed induction machines, power converter rating is reduced.

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