Device and method of controlling a gate of a three-level...

Details Device and method of controlling a gate of a three-level... Device and method of controlling a gate of a three-level...

H - Electricity

02

M

H02M 1/02 (2006.01) H02M 7/48 (2006.01)

Patent

CA 2393506

In a gate control device for self-arc extinction elements (T1) to (T4) and self-arc extinction elements (T5) and (T6) connected in reverse parallel between the respective both terminals of clamp diodes (D5) and (D6), individually, there are provided a PWM circuit (2) that generates conduction control commands (SP) and (SN) , and a gate control circuit (3) including a delay circuit group that generates gate signals (ST1) to (ST6) with respect to the respective self-arc extinction elements on the basis of the respective conduction control commands . The self-arc extinction elements (T3) and (T5) are rendered conductive at the same time under control, and the self-arc extinction elements (T2) and (T6) are rendered conductive at the same time under control.

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