	US 12,228,591 B2
	Busbar as current sensor
Armen Baronian, Toronto (CA); Yash Veer Singh, Menomonee Falls, WI (US); Piranavan Suntharalingam, Menomonee Falls, WI (US); Mikhail Goykhman, Reseda, CA (US); and Galen Chui, Ladera Ranch, CA (US)
Assigned to EATON INTELLIGENT POWER LIMITED, Dublin (IE)
Appl. No. 17/780,444
Filed by EATON INTELLIGENT POWER LIMITED, Dublin (IE)
PCT Filed Nov. 25, 2020, PCT No. PCT/EP2020/025536 § 371(c)(1), (2) Date May 26, 2022, PCT Pub. No. WO2021/104670, PCT Pub. Date Jun. 3, 2021.
Claims priority of provisional application 62/941,463, filed on Nov. 27, 2019.
Prior Publication US 2023/0003765 A1, Jan. 5, 2023
Int. Cl. G01R 1/20 (2006.01); G01R 1/02 (2006.01); G01R 1/04 (2006.01); G01R 1/067 (2006.01); G01R 1/073 (2006.01); G01R 19/00 (2006.01); G01R 19/32 (2006.01); H02M 7/00 (2006.01)

CPC G01R 1/203 (2013.01) [G01R 19/0023 (2013.01); G01R 19/32 (2013.01); H02M 7/003 (2013.01)]

6 Claims

1. A solid state circuit breaker system, comprising:

a parallel configuration comprising an electronic switching module connected in parallel with an electronic energy absorbing module, the parallel configuration connected between a voltage source, via a busbar, and a load;

a voltage sensor detecting a difference in voltage between a first location and a second location on the busbar;

a temperature sensor indicating a temperature of the busbar;

a controller determining the current flowing to the parallel configuration based on the difference in voltage and the electrical resistance of the busbar based on the following:

Where:

I=determined current;

V=difference in voltage detected between the first location and the second location;

R=f(r,t,l,A);

Where:

R=electrical resistance of the busbar;

r=electrical resistivity of the busbar material;

t=temperature of first busbar provided by the temperature sensor;

l=length of the first busbar between the first location and the second location;

A=area of the first busbar between the first location and the second location.