The new power circuit of the frequency converter possessing the wide regulation range has been developed. The structure of the control system has been determined. The control system has been realized on base of the microprocessor aids. The mathematical model with variable structure, methods of the design and also the software package for investigation of the electric drive characteristics with new type of the frequency converter on the computer have been developed. The working breadboard of the electric drive has been created, and the experimental investigations have been carried outAvailable from VNTIC / VNTIC - Scientific & Technical Information Centre of RussiaSIGLERURussian Federatio
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