Induction machines for heavy single phase motor service

The experimental results and investigations presented in this paper have the object of showing the possibilities of operating polyphase motors from single-phase circuit, particularly with a view of the use of such a system where heavy starting duty is required. At various times there have been suggested schemes for changing single-phase current into polyphase current for such purposes, but those schemes have never been taken very seriously on account of their ineffectiveness in producing a balanced polyphase current.