Assessment of characteristics electric motors for the individual drives sowing apparatus

Abstract

In article the analysis of researches and publications in scientific and technical literature of the existing problems when using farm sowing vehicles has been carried out to technologies of handling the of row-crop cultures. During a research questions of increase in efficiency of use agricultural machinery when carrying out the main transactions in exact seeding systems on use of the individual electric drive of the sowing devices or mechanisms have been considered. Use of alternating-current motor for the individual sowing drive device is the development direction perspective of sowing machines. Electric motors have the best operational and economic and quality characteristics during the work from the executive mechanisms sowing the device when comparing with use of a selection capacity shaft for the group drive. As the main versions of the electric drive motors of a direct current with independent or parallel excitement, three-phase asynchronous motors with a short-circuited rotor with management of the oriented field, three-phase engines with permanent magnets and step motors have been considered. For primary operational assessment and economic and quality characteristics during the work with sowing the device mechanical and load characteristics of the considered electric drives have been analysed. After the analysis of drives characteristics it turned out that it is more reasonable to use three-phase engines with permanent magnets or step motors. Also the block diagram of control of the three-phase synchronous electric motor with constants neodymium magnets has been provided in a rotor chain with use three-planimetric management systems with the regulation subordinate of output parameters. It conformed to requirements of the working mechanism. On the basis of the obtained data were set tasks for carrying out further researches of the electric motor choice of the drive of the sowing devices of a management system and food.