Static transfer switch with automatic startup

1 . A system comprising:

a plurality of controlled switches corresponding to a plurality of power sources;

an output controlled switch corresponding to a load;

a static transfer switch (STS) circuit coupled to the plurality of power sources and the load using the plurality of controlled switches and the output controlled switch, respectively, wherein the STS circuit further comprises:

a plurality of sensor nodes corresponding to a plurality of power stages between each of the plurality of power sources and the load;

a controller configured to:

monitor the plurality of power sources and the load using the plurality of sensor nodes; and

control the plurality of controlled switches and the output controlled switch.

2 . The system of claim 1 , wherein the controller is configured to:

determine, in response to initiating the STS circuit, a first status of a first power source of the plurality of power sources;

connect the first power source to the STS circuit in response to the first status satisfying a health threshold by closing a corresponding first controlled switch of the plurality of controlled switches;

enable a power connection through the STS circuit from the first power source to the load;

determine a second status of a second power source of the plurality of power sources; and

connect the second power source to the STS circuit in response to the second status satisfying the health threshold.

3 . The system of claim 2 , further comprising a semiconductor switch for each of the plurality of power sources, wherein each semiconductor switch is coupled between a respective one the plurality of controlled switches and the STS circuit.

4 . The system of claim 3 , wherein connecting the first power source to the STS circuit further includes:

determining a pre-gate status of a power stage associated with the STS circuit after closing the first controlled switch; and

closing, in response to the pre-gate status satisfying a pre-gate threshold, the corresponding semiconductor switch.

5 . The system of claim 4 , wherein enabling the power connection further comprises determining a post-gate status of the power stage associated with the STS circuit after closing the semiconductor switch.

6 . The system of claim 2 , wherein the controller is further configured to determine a load health status after enabling the power connection.

7 . The system of claim 1 , wherein the controller is further configured to perform a mitigating action in response to detecting a failure status, and the mitigating action corresponds to at least one of:

reporting the failure status;

disconnecting an associated connection; or

attempting an alternate power source.

8 . A method comprising:

determining, in response to initiating a static transfer switch (STS) circuit coupled to a load, a first status of a first power source of a plurality of power sources using at least one of a first plurality of sensor nodes corresponding to a first plurality of power stages between the first power source and the load;

connecting the first power source to the STS circuit in response to the first status satisfying a health threshold;

enabling a power connection through the STS circuit from the first power source to the load;

determining a second status of a second power source using at least one of a second plurality of sensor nodes corresponding to a second plurality of power stages between the second power source and the load; and

connecting the second power source to the STS circuit in response to the second status satisfying the health threshold.

9 . The method of claim 8 , wherein the first power source corresponds to a preferred power source.

10 . The method of claim 8 , wherein connecting the first power source to the STS circuit includes closing a controlled switch that is coupled between the STS circuit and the first power source.

11 . The method of claim 10 , wherein connecting the first power source to the STS circuit further includes:

determining a pre-gate status of a power stage associated with the STS circuit after closing the controlled switch; and

closing, in response to the pre-gate status satisfying a pre-gate threshold, a semiconductor switch coupled between the controlled switch and the STS circuit.

12 . The method of claim 11 , wherein the pre-gate threshold corresponds to a power surge.

13 . The method of claim 11 , wherein enabling the power connection further comprises determining a post-gate status of the power stage associated with the STS circuit after closing the semiconductor switch.

14 . The method of claim 8 , further comprising determining a load health status after enabling the power connection.

15 . The method of claim 8 , wherein connecting the second power source to the STS circuit includes closing a second controlled switch that is coupled between the STS circuit and the second power source.

16 . The method of claim 15 , further comprising locking the second controlled switch before determining the first status.

17 . The method of claim 16 , wherein determining the second status further comprises unlocking the second controlled switch.

18 . The method of claim 8 , wherein the first status corresponds to a voltage measurement and the health threshold corresponds to a voltage threshold.

19 . The method of claim 8 , further comprising performing a mitigating action in response to detecting a failure status, wherein the mitigating action corresponds to at least one of:

reporting the failure status;

disconnecting an associated connection; or

attempting an alternate power source.

20 . A controller configured to perform operations comprising:

determining, in response to initiating a static transfer switch (STS) circuit coupled to a load, a first status of a first power source of a plurality of power sources using at least one of a first plurality of sensor nodes corresponding to a first plurality of power stages between the first power source and the load;

connecting the first power source to the STS circuit in response to the first status satisfying a health threshold;

enabling a power connection through the STS circuit from the first power source to the load;

determining a second status of a second power source using at least one of a second plurality of sensor nodes corresponding to a second plurality of power stages between the second power source and the load; and

connecting the second power source to the STS circuit in response to the second status satisfying the health threshold.