Fault tolerant power supply circuit

Details Fault tolerant power supply circuit Fault tolerant power supply circuit

H - Electricity

02

M

H02M 7/519 (2006.01) H02H 7/122 (2006.01) H03K 17/0814 (2006.01)

Patent

CA 2425901

A fault current tolerant power supply circuit having a dc power source and switching devices for inverting dc current from the source into ac load current includes a protective circuit for protecting the switching devices from overvoltage conditions when an inductive load is short-circuited. The protective circuit uses a capacitive component to absorb charge during a short circuit to protect non-conducting switching devices from an overvoltage condition.

L'invention concerne un circuit d'alimentation en courant tolérant un courant de défaut dont la source de puissance est en courant continu. Ledit circuit comprend des dispositifs de commutation permettant d'invertir le courant continu de la source en courant de charge alternatif, ainsi qu'un circuit de protection préservant les dispositifs de commutation de conditions de surtension lorsqu'une charge inductive est court-circuitée. Le circuit de protection utilise un composant capacitif permettant d'absorber la charge pendant un court-circuit afin de protéger les dispositifs de commutation non conducteurs contre une condition de surtension.

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