Abstract
The article presents the results of the analysis of energy characteristics of high-power industrial direct current (DC) power sources based on three-phase thyristor full bridge rectifier circuits. It is shown, that asymmetry of input busbars inductances drastically affects commutation transients in rectifiers with large values of output current which leads to decrease in power factor (PF) of the converter. The paper also discloses an analytical dependence between number of paralleled DC power sources, induction of basbars, used to interconnect separate rectifiers, and voltage total harmonic distortion (THD) at electrical connection point to power grid. To minimize voltage THD and switching losses in semiconductors while improving overall PF a new type of converter is proposed based on buck type active rectifiers (BAR). Conducted studies revealed that utilizing converter with paralleled BARs allows to significantly lower voltage THD for DC industrial applications with medium and high power ratings.
Sign-in/Register to access full text options 
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
