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  2. 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 ...

  3. Brushless DC electric motor - Wikipedia

    en.wikipedia.org/wiki/Brushless_DC_electric_motor

    A brushless DC electric motor (BLDC), also known as an electronically commutated motor, is a synchronous motor using a direct current (DC) electric power supply. It uses an electronic controller to switch DC currents to the motor windings producing magnetic fields that effectively rotate in space and which the permanent magnet rotor follows.

  4. Axial flux motor - Wikipedia

    en.wikipedia.org/wiki/Axial_flux_motor

    The company is investigating the potential for placing motors inside wheels, given that AFM's low mass does not excessively increase a vehicle's unsprung mass. [10] YASA is targeting motors that deliver 220 kW in a 7 kg package, or 31 kW/kg. By contrast, the state of the art EV motor from Lucid Motors offers a 500 kW, 31.4-kg motor, or 16 kW/kg.

  5. Stepper motor - Wikipedia

    en.wikipedia.org/wiki/Stepper_motor

    A stepper motor, also known as step motor or stepping motor, [1] is a brushless DC electric motor that rotates in a series of small and discrete angular steps. [2] Stepper motors can be set to any given step position without needing a position sensor for feedback. The step position can be rapidly increased or decreased to create continuous ...

  6. Pure homopolar motor - Wikipedia

    en.wikipedia.org/wiki/Pure_homopolar_motor

    A pure homopolar motor (PHM) [1] [2] [3] is an electric motor not requiring brushes, electronics, or semiconductor parts to convert direct current into torque.In other words, this homopolar motor only requires a theoretical homogeneous or actual (constantly or cyclically) homogenized magnetic field and direct current, similarly to the Faraday Homopolar Motor (FHM).

  7. 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.

  8. Vector control (motor) - Wikipedia

    en.wikipedia.org/wiki/Vector_control_(motor)

    In vector control, an AC induction or synchronous motor is controlled under all operating conditions like a separately excited DC motor. [21] That is, the AC motor behaves like a DC motor in which the field flux linkage and armature flux linkage created by the respective field and armature (or torque component) currents are orthogonally aligned such that, when torque is controlled, the field ...

  9. Brushless DC motors - Wikipedia

    en.wikipedia.org/?title=Brushless_DC_motors&...

    This page was last edited on 5 May 2009, at 00:57 (UTC).; Text is available under the Creative Commons Attribution-ShareAlike 4.0 License; additional terms may apply ...

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