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- {{Short description|Assembly to control a series of electric motors from one location}} ...Motor Control Center 480 Volt.jpg|thumb|A small, early 1960s-vintage motor control center for 480 volt motors.]] ...5 KB (653 words) - 16:42, 9 October 2023
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- {{Short description|Assembly to control a series of electric motors from one location}} ...Motor Control Center 480 Volt.jpg|thumb|A small, early 1960s-vintage motor control center for 480 volt motors.]] ...5 KB (653 words) - 16:42, 9 October 2023
- ...ref><ref>R. Krishnan, 2001 "Electric Motor Drives: Modeling, Analysis, and Control", Prentice Hall</ref> ...ation of the [[chopper (electronics)|chopper principle]], using the on-off control of a switching device. ...5 KB (710 words) - 10:11, 17 March 2023
- ...-EMF is also due to inductance and Faraday's law, but occurs even when the motor current is not changing, and arises from the geometric considerations of an ...ref> One practical application of this phenomenon is to indirectly measure motor speed and position, as the back-EMF is proportional to the rotational speed ...4 KB (618 words) - 20:15, 5 July 2023
- ...ing power to a lower [[voltage]] to feed other plant loads such as [[motor control center]]s (MCC's). Feeder breakers for these loads will be located on the P * [[Motor control center]] ...1 KB (140 words) - 20:56, 23 July 2023
- .... [[Direct current|Direct Current]] is injected into the winding of the AC motor after the AC voltage is disconnected, providing braking force to the rotor. When power is disconnected from the motor, the rotor spins freely until friction slows it to a stop. Large rotors and ...5 KB (765 words) - 20:16, 9 December 2023
- ...this is achieved by altering the wiring connections inside the motor. The motor may have fixed or variable [[torque]] depending on the [[Stator|stator wind ...uration is commonly referred to as a "pole changing motor" or a "Dahlander motor".<ref>{{patent|US|725415}}, {{patent|CH|14112}}</ref><ref>{{patent|DE|98417 ...7 KB (1,014 words) - 21:19, 4 January 2024
- ...cite book | first=Charles S. | last=Siskind | year=1963 | title=Electrical Control Systems in Industry | publisher=McGraw-Hill, Inc. | location=New York | isb ...ctric current|current]] input, or a device that temporarily alters how the motor is connected in the [[electric circuit]]. ...8 KB (1,193 words) - 22:53, 2 January 2024
- ...s the load varies.<ref>{{cite book|last=Radan|first=Damir|title=Integrated Control of Marine Electrical Power Systems|date=2008-03-10|publisher=Fakultet for i == A complete switchboard and generator control system == ...4 KB (614 words) - 06:26, 9 March 2023
- ...but can be prevented with a grounding brush on the shaft, grounding of the motor frame, insulation of the bearing supports, or shielding. Shaft voltage can be induced by non-symmetrical magnetic fields of the motor (or generator) itself. External sources of shaft voltage include other coup ...6 KB (935 words) - 17:39, 30 March 2023
- ...ong its surface. Associated with each cam is one or more [[switch]]es. The motor rotates at a fixed speed, and the camshaft is driven through a speed reduci Most cam timers use a miniature mains [[synchronous motor]] to rotate the mechanism at an accurate constant speed. Occasionally more ...6 KB (899 words) - 22:24, 9 January 2024
- ...be the external mechanical resistance against which a machine (such as a motor or engine), acts.<ref>[[American Heritage Dictionary of the English Languag ...engine must act against. Because air resistance increases with speed, the motor must put out more [[torque]] at a higher speed in order to maintain the spe ...2 KB (274 words) - 22:37, 23 March 2021
- ...ble in a conventional machine. This leads to a substantial decrease in the motor volume; which means a great increase in the power density. However, since s ...-us-navy|title=General Atomics to Design and Fabricate Advanced Propulsion Motor for US Navy}}</ref> Superconducting [[homopolar generator]]s have been cons ...7 KB (891 words) - 01:25, 4 August 2023
- {{for|use in photography|Motor drive (photography)}} ...this could be called a generator drive but is often still referred to as a motor drive. ...16 KB (2,504 words) - 04:14, 2 March 2024
- ...[[transformer]]s, [[electric light|lighting]], [[rechargeable batteries]], control [[electronics]]). They can be contrasted with traditional [[mechanical devi *[[electric motor|Motor]]s, [[pump]]s and [[HVAC]] Systems ...5 KB (571 words) - 23:58, 18 January 2024
- ...oaded. This allows various imperfect techniques to be used. A single-phase motor can drive a three-phase generator, which will produce a high-quality three- ...is not connected to a load and produces the three-phase power, the second motor driving the load runs on the power produced.<ref>"[http://www.agilemagco.co ...9 KB (1,299 words) - 07:12, 18 January 2024
- A basic three-phase induction motor will have three windings, each end connected to terminals typically numbere ...er applied to a single winding, once spun up by some means. A three-phase motor running on a single phase cannot start itself because it lacks the other ph ...14 KB (2,152 words) - 06:17, 12 December 2023
- ...s|capacitor start]] single-phase motors. However, in a two-phase induction motor, the impedances of the two windings are identical. ...on of electrical energy, but two-phase circuits are still found in certain control systems. ...6 KB (819 words) - 05:30, 30 June 2023
- ...and others. They are [[electromechanical]] energy converters: an electric motor converts electricity to mechanical power while an electric generator conver ==Motor== ...18 KB (2,745 words) - 16:35, 18 February 2024
- ...turning their rotors faster than synchronous speed. A regular AC induction motor usually can be used as a generator, without any internal modifications. Bec ...nd is often expressed as per cent of the synchronous speed. For example, a motor operating at 1450 RPM that has a synchronous speed of 1500 RPM is ...11 KB (1,706 words) - 02:41, 2 January 2024
- ...ctric means, such as tapping propellant [[exhaust gas]] from the missile's motor.<ref name="Forbat, Vigilant" >{{Cite book }}</ref> Rare exceptions where electrically powered control surfaces are used are mostly medium-range subsonic naval missiles, e.g. [[E ...11 KB (1,603 words) - 05:25, 7 November 2021
