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The greatest progress is observed in variable speed AC electric drives. The article presents principles and approaches to the synthesis of structures and parameters of corrective connections of AC electric drives with field regulated reluctance machine. It is shown that the quality of the control parameters depends on the conditions for setting the internal regulation loop of the electromagnetic torque...
The article describes the search for optimal motion path of the positional electric drive under conditions of an indefinite (statistical) characteristics of the load. It is shown that the triangle is the optimum shape of the speed curve, and the ratio of its sides depends on the type of the load diagram, in particular on the influence of the main drive of the pilgering mill, and is independent on...
The optimal control laws for complex multiply connected objects are considered in the article on the example of systems of traction mechanisms by the criterion of minimum losses in the gas-air path. A mathematical model of a multiply connected object is proposed, which includes a gas-air path, an electric drive and a control system. The values of electricity consumption by electric drives of draft...
The article reviews with electrical machines in modern regulated electric drives. The advantages of the complex “controlled converter — motor” for example, variable frequency synchronous drive. Specified effects on more efficient use of the active materials in the electrical machine and reduce electrical losses by varying the air gap between the rotor and the stator and rotor grooving. Two variants...
The article reviews the ways of improving the reliability of industrial electric drives. Show the probability of no failure of the complex «Semiconductor Converter — motor» (P) related to reserve margin power. The expired cost on the installed electrical equipment adopted as a comparative measure of solutions. Note that the increased the index probability of no failure is possible not only by increasing...
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