Multilayered Thyristor Rectifiers under Non-ideal Conditions Mathematical Analysis
Taking into account the leakage inductance of the rectifier transformer,According to the commutation rule of three-phase thyristor power device,the waveforms of input current and output voltage of multiple rectifier are obtained by using the current relation matrix of primary and secondary side of phase-shifting rectifier.The input current wave-form and output voltage waveform are decomposed by Fourier series,and the Fourier series expression of AC input current and DC voltage is obtained,and then the mathe-matical analysis of multi-thyristor rectifier under non-ideal condition is completed.The calculation formulas of fundamental components,harmonic content,power factor,average DC output voltage,commutation voltage drop and harmonic voltage content of input current are given.It provides a theoretical basis for the design and analysis of multiple thyristor rectifiers.
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