Power transfering system

Application Number: 00108684
Application Date: 2000.05.15
Publication Number: 1274192
Publication Date: 2000.11.22
Priority Information: 1999/5/14 JP 133727/99
International: H02M7/48;H02P6/00;H02P6/06
Applicant(s) Name: Hitachi, Ltd.
Inventor(s) Name: Nagasu Masahiro;Kimura Akira;Mori Mutsuhiro
Patent Agency Code: 31100
Patent Agent: shen zhaokun
Abstract In order to detect a current with high accuracy in an electric power converting system, an inductor is connected to a main terminal of a switching element in series, and a voltage generated in both ends of the inductor during switching period is integrated using an integrating circuit to detect the current.