Design of fast response electric drive of agricultural objects

Abstract

The main stages of synthesis of high-speed agricultural AC electric drives are considered in the article. As the main criterion, the mass ratio of the rotating parts of the motor to the nominal torque can be applied. It is rational to solve the following problems in the article: synthesis and justification of the stages in the methodology for the development of high-speed electric drives; assessment of the possibilities of each of the design stages; comparison of the developed electric drives’ characteristics according to the original method with existing objects. Proposed the concept of synthesis drives that implement a limit on the operation speed and handling ability, which from the position of a systematic approach contains a number of stages: synthesis of generalized mathematical models of the object, taking into account a detailed description of the system implementing the limit operating modes; assessment of possibilities of the control object; parametric optimization of electrotechnical complex with the position of the marginal characteristics; selection of simplified mathematical models of the electric drive; synthesis of structures and control systems that realize the limit operating modes; search phase trajectories of motion of the system “Electric drive - working body” implementing extreme modes of operation. The proposed algorithm is a series of interrelated stages, where in each stage can be done the clarification on the results of second stage, for example, detailing the requirements of the technological process at the last stage of the search for phase trajectories provides for a return to the parametric optimization of the agricultural objects electric drive.