It is possible to consider as an optimum behavior of operation a mode providing the least daily allowance or annual charges of the electric power. Such mode can be received by increase in efficiency up to maximal and reduction of losses of a pressure in pipelines. On design stage the optimum behaviour can be achieved with the help of an offered design procedure of modes of operation of miner pump installation.
In article influence of smoothing of loading on a drive of a combine by increase in sliding of the asynchronous engine at dynamic properties of transmission is shown. The increase dempherated reduces factor of electromechanical communication, however this reduction slightly and does not lead to appreciable increase in dynamic forces in transmission.
In modern drilling machines for the drive of rotary-feeding mechanisms are increasingly common volumetric hydraulic drives.
Electric drives of escalators of subways are in the same row with the rolling stock by their purpose.
Electromechanical load devices used in the testing and development of new drive systems should consist of a load machine and a controlled converter, allowing the load to be varied ...
Reproducing machine drive loads in the testing and development of new systems requires special load devices. As a matter of principle, such devices should consist of a load machine and a controllable converter, allowing the load to be varied ...
There is no consensus on the optimal dynamic parameters of electric motors used to drive coal and tunnelling combines. It is known that the operating mode graphs of these machines are characterised by extreme irregularity and obey only probabilistic laws. ...
For the analysis of the spectral composition of the output voltage in the previously proposed thyristor-based direct frequency converter with forced commutation (DFC-FC), we shall employ the following expression…
The increase in labour productivity in mines and the improvement of miners' working conditions have led to the widespread implementation of mining complexes with coal-cutting machines. To ensure high operational efficiency under various conditions, coal-cutting machines must incorporate regulation of both feed and cutting speeds. ...
