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  2. Reluctance motor - Wikipedia

    en.wikipedia.org/wiki/Reluctance_motor

    The number of poles must be even, typically 4 or 6. The rotor operates at synchronous speeds without current-conducting parts. Rotor losses are minimal compared to those of an induction motor, however it normally has less torque. [2] [3] Once started at synchronous speed, the motor can operate with sinusoidal voltage.

  3. Switched reluctance motor - Wikipedia

    en.wikipedia.org/wiki/Switched_reluctance_motor

    If the poles A0 and A1 are energised then the rotor will align itself with these poles. Once this has occurred it is possible for the stator poles to be de-energised before the stator poles of B0 and B1 are energized. The rotor is now positioned at the stator poles b. This sequence continues through c before arriving back at the start.

  4. Motor constants - Wikipedia

    en.wikipedia.org/wiki/Motor_constants

    The rating of a brushless motor is the ratio of the motor's unloaded rotational speed (measured in RPM) to the peak (not RMS) voltage on the wires connected to the coils (the back EMF). For example, an unloaded motor of K v {\displaystyle K_{\text{v}}} = 5,700 rpm/V supplied with 11.1 V will run at a nominal speed of 63,270 rpm (= 5,700 rpm/V ...

  5. Induction motor - Wikipedia

    en.wikipedia.org/wiki/Induction_motor

    For example, for a four-pole, three-phase motor, = 4 and = = 1,500 RPM (for = 50 Hz) and 1,800 RPM (for = 60 Hz) synchronous speed. The number of magnetic poles, , is the number of north and south poles per phase. For example; a single-phase motor with 3 north and 3 south poles, having 6 poles per phase, is a 6-pole motor.

  6. Outrunner - Wikipedia

    en.wikipedia.org/wiki/Outrunner

    The stationary (stator) windings of an outrunner motor are excited by conventional DC brushless motor controllers. A direct current (switched on and off at high frequency for voltage modulation) is typically passed through three or more non-adjacent windings together, and the group so energized is alternated electronically based upon rotor position feedback.

  7. Brushless DC electric motor - Wikipedia

    en.wikipedia.org/wiki/Brushless_DC_electric_motor

    The four poles on the stator of a two-windings single-phase brushless motor. This is part of a computer cooling fan ; the rotor has been removed. Brushless motors fulfill many functions originally performed by brushed DC motors, but cost and control complexity prevents brushless motors from replacing brushed motors completely in the lowest-cost ...

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  9. Axial flux motor - Wikipedia

    en.wikipedia.org/wiki/Axial_flux_motor

    This is an accepted version of this page This is the latest accepted revision, reviewed on 23 November 2024. Type of electric motor construction A miniature DC brushless axial motor used in a Digital Data Storage drive, showing the integration with PCB construction techniques. The rotor shown to the right is magnetized axially with alternating polarity. An axial flux motor (axial gap motor, or ...

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