Transducer produces the account of harmonic electric current

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When transducer works, produce harmonic electricity, because the rectification circuit impedance of transducer input end is not a calm value,be, its impedance is worn the change of extra voltage produces change, the electric current that this brings about rectifier to be absorbed from electrified wire netting is not sine electric current. Single-phase commutator is formed by rectification bridge and flowing capacitance. Usually, laden electric current furnishs by flowing capacitance, become only the voltage prep above of sine wave is flowing when the voltage of capacitance, in just can electric current flows into capacitance and load, because this is in place of voltage peak value to produce pulse record only, substantial harmonic part was included in electric current of this kind of pulse. Same argument, three-phase commutator also can produce harmonic electricity, but at this moment corresponding every wave crest, not be electric current of a pulse, however two pulse electric current. No matter single-phase commutator still is three-phase commutator, their voltaic weaveform produced distortion, it is sine electric current no longer, because this included harmonic part. The load that produces harmonic electricity is called nonlinear laden, to it corresponding, the load that does not produce harmonic electricity calls linear load. The impedance of linear load won't as bring to bear on to produce change in the voltage above its. At this moment, shed the voltaic I=U/R of overload, this means voltaic I and voltage U is linear relation, linear load gets a name from this. When voltage is sine wave, the electric current that has charged linear load still is sine electric current, because this won't produce component of harmonic electric current. Ideal resistor, inductance and capacitance are linear load. But actual inductance may be nonlinear laden, for example, contain the inductance of core, its inductance quantity changes as extra voltage (subsequently and those who come is impedance change) , because this is nonlinear,lose assist. Electric current of transformer generation harmonic is this truth. Nonlinear laden impedance changes as the voltage that brings to bear on to go up in its, the electric current that has shed it at this moment and bring to bear on in the voltage above it not be the line concerns surely, friend call his nonlinear laden. Bring to bear on to such load when sine wave voltage, the voltaic cost that spreads overload is sine wave no longer, include content harmonic part among them. The commutator that brings flowing electric capacity is the commonnest nonlinear laden, the harmonic electricity that it produces and circuit structure are concerned. Rectifier absorbs pulse electric current from electrified wire netting, the pulse that commutate of cycle of every alternating current gives calls the arteries and veins of this commutator to count. For example: To single-phase commutate circuit, every cycle outputs 2 dc pulse, because this calls; of commutator of 2 arteries and veins to work galvanic way to three-phase, every cycle outputs 6 pulse, because of some call commutator of 6 arteries and veins. Divide this beyond, still commutator of commutator of 12 arteries and veins, 13 arteries and veins waits. Summary: The harmonic electric current of transducer is brought about by transducer commutate input. The harmonic part that the commutator that different arteries and veins counts produces is different, the harmonic electricity that commutator of 6 arteries and veins produces three-phase with 5, 7, 11, give priority to 13 times. The number of arteries and veins that increases transducer to input rectifier can reduce harmonic electric current. CNC Milling CNC Machining