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New principles of design and control strategy for creation of fault tolerant inverter-fed electromechanical systems (such as inverter-fed AC motor drives, molten metals electromagnetic stirring systems, etc.) have worked out by the authors of this paper. This strategy is based on the use of the phase-pole method (PPM) of control of an inverter and electromechanical energy transformer (EMET; for example, an induction motor). The application of worked out principles allows to develop the above mentioned type electromechanical systems having high reliability (strictly speaking, post-fault vitality) and less EMET mass-and-overall dimensions than existing ones.