Question { Eskom, 5935 }

what are the advantages by using IGBT in VSC HVDC than
thyristor in conventional HVDC

Answer

As we know that IGBT can be controlled in both turning on
and turning off conditions, so we can control the switching
frequency during conversion, hence we would make switching
for very small instant and would get a smooth and less noise
sine wave. while in case of thyristor, we can only control
it in "on" condition, so switching would affect and we can't
get desired smooth and less noise sine wave at output.

Question { HBL Power Systems, 4939 }

what is diffrence between dc motor and dc generator?

Answer

write the contruction wise difference.. this is kid's answer.

Question { L&T, 4788 }

what is the difference b/w UHVDC and HVDC(LIGHT)?

Answer

i need to know the technical difference? not abbreviational

Question { L&T, 4788 }

what is the difference b/w UHVDC and HVDC(LIGHT)?

Answer

dear Thangaraj.r
kindly tell me, one thing more, what is the basic internal technology used in UHVDC, as thyristors are used in HVDC and IGBTs are used in HVDC PLUS