TY - JOUR N2 - In this paper the mathematical model of the brushless DC motor (BLDCM) with a double 3-phase stator winding is analysed. Both the 3-phase windings are mutually displaced by 30 electrical degree. Special care has been sacrificed to influence of higher harmonics of induced electromotive forces (EMF) on electromagnetic torque and zero sequence voltages that may be used for sensorless control. The mathematical model has been presented in natural variables and, after transformation to symmetrical components, in a vector form. This allows, from one side, for formulating the equivalent circuit suitable for circuit oriented simulators (e.g.: Spice, SimPowerSystems of Simulink) and, from the other point of view, for analysis of higher harmonics influence on control possibilities. These considerations have been illustrated with some results of four quadrant operation obtainded due to simulation at automatic control. L1 - http://www.journals.pan.pl/Content/85042/PDF/05_paper.pdf L2 - http://www.journals.pan.pl/Content/85042 PY - 2015 IS - No 1 March EP - 66 DO - 10.1515/aee-2015-0006 KW - brushless DC motor KW - double stator winding KW - harmonics of back EMF A1 - Drozdowski, Piotr PB - Polish Academy of Sciences VL - vol. 64 DA - 2015[2015.01.01 AD - 2015.12.31 AD] T1 - Modelling of BLDCM with a double 3-phase stator winding and back EMF harmonics SP - 53 UR - http://www.journals.pan.pl/dlibra/publication/edition/85042 T2 - Archives of Electrical Engineering ER -