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Electric Potential Energy and Electric Potential
Electric Potential Energy and Electric Potential

... 9. Point P is located at the center of the square below. Draw a vector with its tail on point P indicating the direction of the electric field at the point. If the value of the electric field at P due to one point charge is E, what is the value due to the 4 point charges? If the value of the electr ...
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Power Flow Control in Variable speed Wind Energy Conversion

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Physics of Hybrid Vehicles

... RC [resistor-capacitor] filters are used to decrease the AC component and allow steady DC meter readings. [especially with a digital meter] A diode is used to charge a capacitor for the peak reading. Peak voltage should not exceed maximum soft charge voltage. For both configurations, the generator m ...
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... 5) Due to this behavior of the step motor, driving the motor at a step speed near its natural frequency can greatly increase the oscillations during response. The natural frequency of the motor depends on the stiffness (electro-magnetic field) and rotational inertia. Higher inertia will decrease the ...
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Characterization of a ferromagnetic material for steady state application

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... permanent magnet and variablereluctance step-motor types.) For the greatest wiring flexibility, the motor's eight leads are connected to the ends if the four coils that make up the phase windings. The coils can be connected in series or in parallel to operate with a bipolar drive, or in series with ...
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... AC current is passed through the rotor windings AC current is passed through the stator windings DC current is passed through the rotor windings DC current is passed through the stator windings ...
Physics of Hybrid Vehicles
Physics of Hybrid Vehicles

... RC [resistor-capacitor] filters are used to decrease the AC component and allow steady DC meter readings. [especially with a digital meter] A diode is used to charge a capacitor for the peak reading. Peak voltage should not exceed maximum soft charge voltage. For both configurations, the generator m ...
Maximum Availability - Mitsubishi Automation
Maximum Availability - Mitsubishi Automation

... There are several reasons why the engineers chose to use 3-phase AC motors with frequency inverters and without a feedback loop for this project: In addition to being inexpensive, this combination also significantly reduces the motor servicing overheads ...
Evolution of Electromagnetics in the 19th Century
Evolution of Electromagnetics in the 19th Century

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Electric machine

The academic study of electric machines is the universal study of electric motors and electric generators. By the classic definition, electric machine is synonymous with electric motor or electric generator, all of which are electromechanical energy converters: converting electricity to mechanical power (i.e., electric motor) or mechanical power to electricity (i.e., electric generator). The movement involved in the mechanical power can be rotating or linear.Although transformers do not contain any moving parts they are also included in the family of electric machines because they utilise electromagnetic phenomena.Electric machines (i.e., electric motors) consume approximately 60% of all electricity produced. Electric machines (i.e., electric generators) produce virtually all electricity consumed. Electric machines have become so ubiquitous that they are virtually overlooked as an integral component of the entire electricity infrastructure. Developing ever more efficient electric machine technology and influencing their use are crucial to any global conservation, green energy, or alternative energy strategy.
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