System and method for power charging or discharging
AssigneeGeneral Electric Company
InventorsMin Hu, Yunfeng Liu, Hai Yang
Life of this patent
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Abstract
A system comprising a plurality of stacks and a plurality of converters, each of the plurality of converters is operable to charge a corresponding stack for adsorbing ions in a liquid, wherein when one of the plurality of stacks is charged or discharged at a first state, one of the plurality of converters associating with the stack operates in a first mode, and is configured to indirectly convert a first voltage to a second voltage at least by an intermediate stage, one of the plurality of stacks is charged or discharged at a second state, one of the plurality of converters associating with the stack operates in a second mode, and is configured to directly convert the first voltage to the second voltage.
Claims15
A system for de-ionizing a liquid having charged species, the system comprising:
- a plurality of stacks operating in a charging state and a discharging state;
- and
- a plurality of converters, wherein each of the plurality of converters is:
- electrically coupled to a corresponding one of the plurality of stacks,
- configured to charge the corresponding stack for adsorbing ions in the liquid in the charging state, and to discharge the corresponding stack for desorbing ions adsorbed by the corresponding stack in the discharging state, and
- configured to operate in a first mode or a second mode depending on a charging state or a discharging state of the corresponding stack,
- wherein when the corresponding stack is charged or discharged at a first state, a converter of the plurality of converters coupled to the corresponding stack is configured to operate in the first mode, and to indirectly convert a first voltage to a second voltage at least by an intermediate stage, and
- wherein when the corresponding stack is charged or discharged at a second state, a converter of the plurality of converters coupled to the corresponding stack is configured to operate in the second mode, and to directly convert the first voltage to the second voltage.
Dependencies are inferred from the claim text.