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Convers Or

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  • Convertidores de Corriente Alterna a Corriente Directa con Voltaje Promedio de Salida VariableIng. Javier Rodrguez Bailey

  • a=30a=120a=0SEMICONVERTIDOR MONOFASICOIng. Javier Rodrguez Bailey

  • SEMICONVERTIDOR MONOFASICOIng. Javier Rodrguez Bailey

  • a=0a=60a=120CONVERTIDOR COMPLETO MONOFASICOIng. Javier Rodrguez Bailey

  • CONVERTIDOR COMPLETO MONOFASICOIng. Javier Rodrguez Bailey

  • a=0a=45a=75SEMICONVERTIDOR TRIFASICOIng. Javier Rodrguez Bailey

  • a=0a=45a=75SEMICONVERTIDOR TRIFASICOIng. Javier Rodrguez Bailey

  • SEM ICONVERTIDOR TRIFASICOIng. Javier Rodrguez Bailey

  • a=75a=105a=45CONVERTIDOR COMPLETO TRIFASICOIng. Javier Rodrguez Bailey

  • CONVERTIDOR COMPLETO TRIFASICOIng. Javier Rodrguez Bailey

  • A continuacin se analizara el comportamiento de los convertidores monofsicos desde el punto de vista del factor de potencia y contenido de armnicas que agregan la red de corriente alterna.Recordatorio de Factor de potencia y distorsin total de armnicas:Ing. Javier Rodrguez Bailey

  • Ing. Javier Rodrguez Bailey

  • Ing. Javier Rodrguez BaileyDeterminacin de la serie de Fourier de un pulso en forma generalizada

  • DETERMINACION DE LA SERIE DE FOURIER DE UN PULSO EN FORMA GENERALIZADA NEGATIVO Y DEFASADO RADIANES. USANDO EL DESARROLLO ANTERIOR CAMBIANDO LA AMPLITUD DE 1 A -1 Y r POR +rLos coeficientes an y bn en el trmino coseno y seno tienen un defasamiento n, que para n impar equivale a un cambio de signo y para n par equivale a un defasamiento multiplo de 2 o sea 0 Ing. Javier Rodrguez Bailey

  • SUMANDO LOS DOS PULSOS ANTERIORES SE OBTIENE LA FIGURA 3, Y SU SERIE DE FOURIER ES Al sumar los dos pulsos la formA de onda tiene simetra de media onda: f(t)=-F(t+T/2)y por esta razn desaparecen todas las armonicas pares, por lo tanto para esta ltima curva la serie de Fourier sera Ing. Javier Rodrguez Bailey

  • Se analizara el convertidor completo monofsico de la figura con una carga formada por una resistencia (R), una inductancia muy grande (L) y una fuente de directa (E). Esto podra representar la armadura de un motor de C. D.Debido a la inductancia grande la corriente por la carga ser continua y constante. Los tiristores al dispararse con un atraso de ngulo a controlaran el voltaje promedio aplicado a la carga.Ing. Javier Rodrguez BaileyConvertidor completo monofsico

  • Ing. Javier Rodrguez Bailey Ondas de convertidor completo

  • Ing. Javier Rodrguez BaileyVcd y f. p. en convertidor completo

  • Para el convertidor monofsico se tendrn los siguientes valores:Fdist = =.9003Fdesp = Cos aF. P. = 0.9003 Cos aI1 = 90.03%I7=12.86%I3= 30.01%I9=10.0%I5= 18%THD= 48.34%Ing. Javier Rodrguez BaileyArmnicas de convertidor completo

  • En el semiconvertidor mostrado en la figura la carga ser una resistencia (R), una inductancia muy grande (L) y una fuente de directa (E), que podra representar la armadura de un motor de C. D.Por ser un semiconvertidor el voltaje en la carga no puede ser negativo, y debido a la inductancia grande la corriente por la carga ser continua y constante. El voltaje promedio aplicado a la carga se controla con el atraso a en la seal de disparo a los tiristores.Ing. Javier Rodrguez BaileySemiconvertidor monofsico

  • Ing. Javier Rodrguez BaileyOndas de semiconvertidor monofsico

  • Ing. Javier Rodrguez BaileyVcd y f. p. de semiconvertidor monofsico

    Chart2

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    Vcdnormalizado

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    Semiconvertidor monofsico

    Sheet1

    Convertidor completoSemiconvertidor

    alfa(radianes)alfa(grados)VCDnormalizadoF.P.13579IsTHDVcdnormalizadoF.P.FdespFdist13579IsTHD

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    Sheet1

    VCDnormalizado

    F.P.

    Alfa

    Convertidor completo monofsico

    Sheet2

    Vcdnormalizado

    F.P.

    Alfa

    Semiconvertidor monofsico

    Sheet3

    1

    3

    5

    7

    9

    Is

    THD

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    Armnicas en semiconvertidor monofsico

  • Ing. Javier Rodrguez BaileyFdist, fdesp y f. P. de semiconvertidor monofsico

    Chart1

    0.900316316210.9003163162

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    0.02478544470.07845909570.3159027576

    00180

    F.P.

    Fdesp

    Fdist

    Alfa

    Semiconvertidor monofsico

    Sheet1

    Convertidor completoSemiconvertidor

    alfa(radianes)alfa(grados)VCDnormalizadoF.P.13579IsTHDVcdnormalizadoF.P.FdespFdist13579IsTHD

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