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Rotary transformer for coupling multi-phase systems having a small frequency difference. Bbc Brown Boveri & Cie, July 9, 1969: GB1157885-A (54 worldwide citation)

1,157,885. Systems connecting two or more sources. BROWN, BOVERI & CO. Ltd. 18 July, 1966 [19 July, 1965; 7 Oct., 1965; 10 Feb., 1966], No. 32129/66. Heading H2H. A rotary transformer comprising an induction machine A having a number of poles not exceeding 4 couples two polyphase A.C. distribution s ...


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