?? ??? ??? ??? ?? ??? ??? ? ?? ??? ?? ????? ??? ?? ????.?????? ?? ??? ?? ?? ?????, ???? ???? ??? ??? ?? ??? ???? ??? ??? ???? ???? ??? ?????.Alternatively, HVDC can be a direct current whose voltage is usually enhanced or lowered only making use of sophisticated converters. These converters are certainly high priced. On the other hand, the DC volta