Volyanskaya Y. Improvement of energy saving control sistem with asynchronous drive

The dissertation is devoted to questions of increase of power efficiency not loading of the asynchronous electric drive by perfection of systems energy saving of management. Is shown, that the basic way energy saving of the not loaded asynchronous electric motors is the regulation of a flow. On the basis of the offered analytical dependences connecting a current and saved up capacity to the moment of loading and a voltage, the law energy saving the managements fixed in a basis of developed generalized algorithm of management asynchronous drive is received which allows at change of the moment of loading to find mode of operations a asynchronous drive ensuring maximum of the saved up electric power. The principle of switching of windings stator a asynchronous drive from "triangle" on "star" and is offered back at change of loading, which allows essentially to lower consumed for a cycle of work energy and throws of a current at switching. The block of management of systems energy saving of management asynchronous drive is developed on the basis of microprocessor engineering. The experimental researches of devices with the developed block of management are carried out. During experiments the serviceability of devices is proved, the effect energy saving is received. On the basis of the offered devices energy saving of purpose at National university of shipbuilding of a name of the admiral Makarov the research laboratory “Energy saving in the electric drive” (five laboratory stands) is created scientifically. The system energy saving of management a “tiristor voltage transformer- asynchronous drive” with synchronization of gates with a voltage of a network is advanced by application of the offered laws of management of gates and energy saving of management. Is proved, that the application of this system allows to optimize power consumption of the electric drive at change of loading.