FIELD: electricity.
SUBSTANCE: brushless electric motor comprises stator (21) with windings (21a, 21b and 21c), rotor (22), rotating by rotary magnetic field, and switching element (30a). Brushless electric motor comprises rotation frequency control unit (33), which performs switching between low-speed and high-speed modes, wherein in low-speed mode rotation frequency control unit (33) supplies current to windings (21a, 21b and 21c) at pre-set moment of power supply and controls switching on duration for rotor rotation frequency control (22), and in high-speed mode rotation frequency control unit (33) supplies current to windings (21a, 21b and 21c) in earlier moment of power supply as compared with low-speed mode, thus performing control of rotor rotation frequency (22) by rotating magnetic field attenuation in comparison with low-speed mode.
EFFECT: reduced dimensions.
6 cl, 31 dwg
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