Patent ID: 6515840
Filing Date: 2003-02-04
Classification: H02H

Abstract:
A solid state circuit breaker for use in connection with a voltage bus, the voltage bus supplying electrical current to a load, the solid state circuit breaker comprising:a current controller for controlling the magnitude of the electrical current supplied to the load by the voltage bus; a current sensing resistor, connected in series with said current controller; a first current sensor for sensing said magnitude of said electrical current supplied by the voltage bus, said first current sensor comparing the voltage across said current sensing resistor to a first reference voltage, and said first current sensor having an output in communication with said current controller; and an inductor, connected in series with said current sensing resistor, said inductor providing a back electromotive force proportional to the rate of change of said electrical current flowing through the voltage bus; wherein said back electromotive force contributes to the magnitude of the voltage across said current sensing resistor.