Electrical transmission or interconnection systems – Nonlinear reactor systems – Parametrons
Patent
1986-05-12
1988-07-26
Miller, Stanley D.
Electrical transmission or interconnection systems
Nonlinear reactor systems
Parametrons
307446, 307544, 307566, 307270, 307572, H03K 1710, H03K 1708, H03K 1756, H03K 17687
Patent
active
047602937
ABSTRACT:
Power MOSFETs for switching high voltages have a relatively high on-state DC resistance. The invention provides for the connection in series of a low voltage MOSFET with a higher voltage bipolar transistor. This series circuit is connected in parallel with a series circuit consisting of another MOSFET and a threshold switch. The threshold switch is placed between the base terminal and the free terminal of the low voltage MOSFET. The MOSFETs receive a joint control signal (u.sub.1) which is routed to the low voltage MOSFET. In the case of an inductive load with recovery operation, the signal is routed through a delay element that becomes active when the circuit is turned on.
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Chen et al., "Application of Transistor Emitter-Open Turn-Off Scheme to High Voltage Power Inverters", IEEE Transactions on Industry Applications, vol. 1A-18, No. 4, pp. 411-415, Jul.-Aug. 1982.
Fischer et al., "Leistungs-MOSFETs in der Energieelekronik Teil IV und Schlub", Elektrie, vol. 36, No. 7, pp. 366-370, 1982.
B. Taylor, HEXFETs in hochsperrenden Schaltungen bei hohem Wirkungsgrad", Elektronik 23/1981, pp. 93 to 96.
Bertelson David R.
Miller Stanley D.
Moran John Francis
Siemens Aktiengesellschaft
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