Brushless DC electric motor - Wikipedia, the free encyclopedia
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A brushless DC motor ( BLDC ) is a synchronous electric motor which is powered by direct-current electricity (DC) and which has an electronically controlled commutation system, instead of a mechan...
en.wikipedia.org/wiki/Brushless_DC_electric_motor
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This action is called "commutation". Very many DC motors (brush-type) have built-in commutation, meaning that as the motor rotates, mechanical brushes automatically commutate coils on ... In a brushless motor, the trick becomes to know when to switch the electrical energy in the windings to perpetuate the rotating motion.
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www.pc-control.co.uk/dc-motors.htm
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When current flows in a conductor, an electromagnetic field is generated around it. If the conductor is ... Reversing the direction of current flow in the conductor will cause the conductor to move in the opposite direction. ... A conductor loop which can freely rotate within the magnetic field is the most efficient design.
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www.cdxetextbook.com/electrical/chargStartLight/start/c...
www.cdxetextbook.com/electrical/chargStartLight/start/commutation.html
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Did You Know...; PatentStorm makes it easy for you to keep track of the latest patent information and trends: Check out this month's Top Inventors and Most Cited Patents. Subscribe to an ... Each of the valves is responsive to a respective electrical control signal for placing the valve in the first or second condition.
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www.patentstorm.us/patents/4767292.html
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Abstract not available for EP0164276; Abstract of corresponding document: US4638275; ... An electric switching unit for preventing oxidation of copper-base contacts in contactors comprises a body (2), comprises an electromagnet (11) having a stationary yoke (7) and a moving armature (15) ... European Patent EP0164276...
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www.freepatentsonline.com/EP0164276.html
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Date Jun. 2, 1988.A device for arcless switching of electrical circuits, wherein power leads of a controlled semiconductor device - transistor 9 are connected parallel to a movable contact (2) and a fixed make contact (3) of a make-and-break contact assembly (1). A control lead of the transistor, which is its base,
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www.freepatentsonline.com/EP0299069.html
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The invention relates to electrical commutation apparatus of the kind having a fixed core, a coil, a movable armature constituting a motor, a frame including shaped engaging means placed perpendicularly to the movement of the armature to support a number of housings each containing fixed and movable elements ...
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www.patentgenius.com/patent/3964006.html
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An antenna system having a central radiator element and one or more surrounding rings of parasitic elements which can be tuned or actuated separately in each ring by electrical commutation to provide a stepped cardioid radiation or receiving pattern. ... I claim: 1. ... 2. The system as set forth in claim 1,
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www.patentgenius.com/patent/3950753.html
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steam turbine, rotor speed, turbine speed: But something is rotating - even if it is electrical commutation. If it gets overloaded it will slow down. Slowing down in a controlled system will kick it out and disconnect it from the system. ... More Electrical Engineering Answers; Question Library;
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en.allexperts.com/q/Electrical-Engineering-1356/2008/2/...
en.allexperts.com/q/Electrical-Engineering-1356/2008/2/alternator-connected-bus-1.htm
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