Energy model of electric drive of centrifugal borehole pump A. Vodovozov, N. Chernyaeva, D.A. Zaripova, B.A. Zhakishev and D.K. Sarzhanov E3S Web Conf., 124 (2019) 02018 Published online: 25 October 2019 DOI: 10.1051/e3sconf/201912402018