self-excited


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self-excited

adj
1. (Electronics) (of an electrical machine) having the current for the magnetic field system generated by the machine itself or by an auxiliary machine coupled to it
2. (Electronics) (of an oscillator) generating its own energy and depending on resonant circuits for frequency determination

self′-excit′ed



adj.
having magnets that are excited by the electric current produced: a self-excited generator.
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Output 2100 Va, Rated Current 8 Amps, Nfb 9 Amps Ac Voltae No Load 230 Volts - 5 Volts, 50 Hz, With Following Technical Details- Alternator: Brushless, Rare Earth Magnetic Rotor, Single Phase, 50 Hz, Self-Excited And Constant Voltage With Avr, Max Power: 2100 Va, Max Current Capacity: 9 Amps, Engine: Single Cylinder, Overhead Valve-4 Stroke, Air Cooled, Capacity: 5 Bhp, Speed: 1500 Rpm, Starting System: Self Start/Recoil Start, Fuel Consumption: Not More Than 0.
Among the topics are wave packets as a model of localized disturbances propagating along cables, a system for measuring a child's foot pressure on a shoe sole, laboratory research on energy harvesting of ionic polymer metal composites, predicting the shape of non-ferrous pipe elements processed by electro-dynamic forming, and analyzing the dependence between stress change and resonance frequency for self-excited acoustical systems.
The solar magnetic field and the activity cycle originate in a self-excited dynamo mechanism based upon convective flows and rotation in the outer third of the solar radius.
This self-excited cutting phenomenon can become unstable, and chatter vibrations grow until the tool jumps out of the cut, ruins the expected surface tolerances and can even break under excessive cutting forces.
Brushless, Self-Excited Synchronous Field-winding Machine seeks to develop low-cost, high-performance electric motor technology that utilizes exclusively earth-abundant materials.
The above suggestion is based on the idea about the proximity of the frequencies of self-excited oscillations, characteristic of a turning system, to its natural frequencies as a result of the weak dissipativity.
The final section cites case studies of trouble shooting that involve forced vibration and critical speed, self-excited rotor vibration, and additional rotor vibration.
t)], the loading mode is near the possible occurrence of transient performance of self-excited oscillations of the relaxation type.
It is observed that conventional techniques to analyse the steady state analysis of Self-Excited Induction Generator (SEIG) involve cumbersome mathematical procedures.
They also provide a unique analysis of dynamical problems, such as nonlinear rotordynamics, self-excited vibration, nonstationary vibration, and flow-induced oscillations.
Among specific topics are preparing mullite and its composites from fly ash, a solution exchange method for synthesizing sulfur graphene composites, the dynamic behavior analysis of three-span rotor-bearing system with rub-impact fault, the strength and elasticity of soybean protein fiber/combed cotton blended yarn, biological materials in interior design, and external characteristics of self-excited induction generators under steady state operation.
Under continuous machining conditions, two types of vibration occur as a result of movement between a work-piece and tool: external vibration (result of interference force transmitted through the foundation into the machine); self-excited vibration, (the machine system oscillates, basically, at one or more natural frequencies, when no external forces are acting).