Miscellaneous active electrical nonlinear devices – circuits – and – Gating – Utilizing three or more electrode solid-state device
Patent
1993-09-07
1996-01-09
Callahan, Timothy P.
Miscellaneous active electrical nonlinear devices, circuits, and
Gating
Utilizing three or more electrode solid-state device
327441, 327442, 327443, 327470, 363 57, 363 85, 363 96, H03K 1760, H03K 1773, H02H 7122, H02M 542
Patent
active
054831920
ABSTRACT:
A gate power supply circuit including a switching device and a gate drive circuit connected to the switching device for generating a gate signal to be supplied to a gate of the switching device. The gate power supply circuit further includes a series circuit of a snubber capacitor and a snubber diode connected in parallel with the switching device, and an inductor, a first terminal of which is connected to a connection point of the switching device and the snubber diode. The gate power supply circuit also includes a series circuit of power disposing circuit and a first diode, connected between a series connection point of the snubber capacitor and the snubber diode and a second terminal of the inductor. The gate power supply circuit further includes a series circuit of a power supplying capacitor and a second diode, connected in parallel with the inductor. The gate drive circuit is connected to the power supplying capacitor to receive energy stored in the power supplying capacitor as power source for the gate drive circuit.
REFERENCES:
patent: 4703411 (1987-10-01), Umbricht
patent: 4725941 (1988-02-01), Watanabe
IEEE Transactions on Power Delivery, vol. 5, No. 3, Jul. 1990, pp. 1327-1335, H. Yamada, et al., "GTO Thyristor Applications for HVDC Transmission Systems".
Callahan Timothy P.
Kabushiki Kaisha Toshiba
Phan Trong
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