Efficiency control for adjustment of number of working pumps in multi-pump systemBakman, Ilja; Gevorkov, Levon; Vodovozov, Valery2015 9th International Conference on Compatibility and Power Electronics (CPE) : proceedings : Faculty of Science and Technology (FCT), Caparica, Lisbon, Portugal, 24-26 June, 20152015 / p. 396-402 : ill http://dx.doi.org/10.1109/CPE.2015.7231108