Switching control selection logic in high-speed loop in MODACS
A vehicle, system and method of operating a battery having a plurality of modules, each module having a plurality of strings. The vehicle includes the battery. A processor operates the plurality of modules in a first phase of a mode of operation, calculates a model-predicted path vector for the first phase based on a time for reducing a difference between states of charges of the plurality of strings, selects between the model-predicted path vector and a default path vector based on an operating parameter of the battery, and switches operation of the plurality of modules from the first phase to a second phase using the selected one of the model-predicted path vector and the default path vector.
1. A method of operating a battery having a plurality of modules, each module having a plurality of strings, comprising:
operating the plurality of modules in a first phase of a mode of operation;
calculating a model-predicted path vector for the first phase based on a charging or discharging the strings for reducing a difference between states of charge of the plurality of strings;
selecting between the model-predicted path vector and a default path vector based on an operating parameter of the battery; and
switching an operation of the plurality of modules from the first phase to a second phase using the selected one of the model-predicted path vector and the default path vector.
2. The method of claim 1 , further comprising selecting the model-predicted path vector when the use of the model-predicted path vector satisfies a power requirement of the battery.
3. The method of claim 2 , further comprising selecting the default path vector when the use of the model-predicted path vector does not satisfy the power requirement of the battery.
4. The method of claim 2 , wherein the power requirement is based on a switching frequency at which switching power loss occurs.
5. The method of claim 1 , wherein the operating parameter includes at least one of a temperature of the battery and a power demand on the battery.
6. The method of claim 1 , wherein switching the operation of the plurality of modules from the first phase to a second phase further comprises flipping a switch between a first configuration that connects a default switching control module to the battery and a second configuration that connects a model-predicted switching control module to the battery.
7. The method of claim 1 , further comprising selecting the default path vector when at least one of: (i) a mode of operation changes; and (ii) a direction of power changes.
8. A system for operating a battery having a plurality of modules, each module having a plurality of strings, comprising:
a processor configured to:
operate the plurality of modules in a first phase of a mode of operation;
calculate a model-predicted path vector for the first phase based on a time for reducing a difference between states of charges of the plurality of strings;
select between the model-predicted path vector and a default path vector based on an operating parameter of the battery; and
switch operation of the plurality of modules from the first phase to a second phase using the selected one of the model-predicted path vector and the default path vector.
9. The system of claim 8 , wherein the processor is further configured to select the model-predicted path vector when the use of the model-predicted path vector satisfies a power requirement of the battery.
10. The system of claim 9 , wherein the processor is further configured to select the default phase vector when the use of the model-predicted path vector does not satisfy the power requirement of the battery.
11. The system of claim 9 , wherein the power requirement is based on a switching frequency at which switching power loss occurs.
12. The system of claim 8 , wherein the operating parameter includes at least one of a temperature of the battery and a power demand on the battery.
13. The system of claim 8 , wherein the processor is further configured to flipping a switch between a first configuration that connects a default switching control module to the battery and a second configuration that connects a model predicted switching control module to the battery.
14. The system of claim 8 , wherein the processor is further configured to select the default path vector when at least one of: (i) a mode of operation changes; and (ii) a direction of power changes.
15. A vehicle, comprising:
a battery having a plurality of modules, each module having a plurality of strings; and
a processor configured to:
operate the plurality of modules in a first phase of a mode of operation;
calculate a model-predicted path vector for the first phase based on a time for reducing a difference between states of charges of the plurality of strings;
select between the model-predicted path vector and a default path vector based on an operating parameter of the battery; and
switch operation of the plurality of modules from the first phase to a second phase using the selected one of the model-predicted path vector and the default path vector.
16. The vehicle of claim 15 , wherein the processor is further configured to select the model-predicted path vector when the use of the model-predicted path vector satisfies a power requirement of the battery.
17. The vehicle of claim 16 , wherein the processor is further configured to select the default phase vector when the actual mode duration use of the model-predicted path vector does not satisfy the power requirement of the battery.
18. The vehicle of claim 17 , wherein the power requirement is based on a switching frequency at which switching power loss occurs.
19. The vehicle of claim 15 , wherein the operating parameter includes at least one of a temperature of the battery and a power demand on the battery.
20. The vehicle of claim 15 , wherein the processor is further configured to flipping a switch between a first configuration that connects a default switching control module to the battery and a second configuration that connects a model predicted switching control module to the battery.