Somochkin A. Conditions and systems of the facilitated start of the mine excavators transforming aggregates synchronous drives in requirements of the distant voltage source networks.

The thesis is devoted to improving of indexes of an electrical energy quality (voltage lowering) and a quality of two powerful synchronous drives transient proc-esses (electromagnetic moment maximas), energizing from the distant voltage source network, at starting one of them from this network. For a problem solution of improving quality indexes of synchronous drives en-ergy and transient processes in the indicated electrotechnical complex the mathemati-cal model for a research of two synchronous drives transient processes obtaining the distant voltage source main supply was designed. To obtained mathematical model of two synchronous drives and the networks were applied tools of the experiments design theory, for the purpose of searching re-sponse functions of the synchronous drives electromagnetic moment and voltage lowering at the point of both synchronous drives connection. With the help of the lin-ear programming methods was established, that the self-locking synchronous drive starting method withnowaday network does not ensure rational requirements starting course. With the help of response functions, having maximum acceptable values of the engagement voltage lowerings and the electromagnetic moment in network, were defined angles gamuts of connection and slides of nonsynchronous powered up syn-chronous drive in a network. The obtained boundaries of out-of-phase tolerance in-troducing in the network have formed the basis for the development of the universal control unit by a precise synchronization with a network.