H - Electricity – 02 – M
Patent
H - Electricity
02
M
321/91
H02M 7/00 (2006.01) H02H 7/12 (2006.01) H02M 7/757 (2006.01) H03K 17/0814 (2006.01)
Patent
CA 1119667
ABSTRACT OF THE DISCLOSURE In electric power converting apparatus comprising a plurality of branches each including a plurality of serially connected semiconductor switching elements, a non-linear resistor is connected in parallel with each semiconductor switching element, and a voltage division element including serially connected capacitor and a resistor is connected in parallel with each semiconductor switching element. A reactor is connected in series with each one of the branches and an arrester is connected in parallel with the serially connected reactor and the one branch. According to this invention, it is possible to decrease the number of switching elements connected in series in each branch, decrease the capacity of the anode reactor and the damping circuit, decrease the power loss of the switching element and cost and to improve the reliability.
295634
Kobayashi Sumio
Matsushita Tetsushi
Fetherstonhaugh & Co.
Tokyo Shibaura Denki Kabushiki Kaisha
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