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  1. rafael055

    Third harmonic appearance in six pulse thyristor controlled rectifier supplying DC motor

    HI I am performing simulink simpower simulations of harmonic analysis of 5KW 440V 1000rpm dc motor fed by 6 pulse thyristor bridge. for alpha of 75 degrees and different torque inputs the fft analysis of the ac current showing me third harmonics. what is the reason for this ?

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