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Analysis of current and voltage harmonics introduced by the drive systems of a bucket wheel excavator
(National Mining University, 2020-12-30)
Purpose. The quality of electricity is a problem of major interest, making it necessary to analyze the factors and causes that result in the worsening of the electric energy quality. An important aspect of electricity ...
Identifying the efficiency decrease factor of motors working under power harmornic in 660V electric mining grids
(Dnipro University of Technology, 2021-12-30)
Purpose. Identify the motors efficiency decrease factor corresponding to various values of load-carrying ratio.
Methods. Basing on the onsite measurements of power harmonic in 660V low voltage (LV) grids in Vietnam ...