Energy storage modules and management system
First Claim
1. A system to manage energy, comprising:
- a plurality of energy storage modules, wherein each energy storage module includes;
a power converter couplable to a link, a power converter controller to control operation of the power converter, and at least one energy storage unit connected to only the power converter of an associated energy storage module;
a power management controller to control power delivery from each energy storage module to the link and to control power delivery to each energy storage module; and
a signaling connection interconnecting the power management controller, each power converter controller of each of the plurality of energy storage modules and at least one load connected to the link, to send signals to control power delivery to the link.
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Accused Products
Abstract
A system to manage energy may include a plurality of energy storage modules. Each energy storage module may include a power converter couplable to a link and a power converter controller to control operation of the power converter. Each energy storage module may also include at least one energy storage unit connected only to the power converter. The system may also include a power management controller to control power delivery from each of the plurality of energy storage modules to the link and to control power delivery to each of the plurality of energy storage modules. Each power converter may include a hardware voltage loop to generate a first signal in response to a line voltage and voltage command signal, and a hardware current loop to generate a second signal in response to the first signal, a line current and a command current signal, wherein the power converter is adjustable in response to the second signal to apply a predetermined power from the link to the at least one energy storage unit or to supply a selected power from the at least one energy storage unit to the link.
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Citations
39 Claims
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1. A system to manage energy, comprising:
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a plurality of energy storage modules, wherein each energy storage module includes;
a power converter couplable to a link, a power converter controller to control operation of the power converter, and at least one energy storage unit connected to only the power converter of an associated energy storage module;
a power management controller to control power delivery from each energy storage module to the link and to control power delivery to each energy storage module; and
a signaling connection interconnecting the power management controller, each power converter controller of each of the plurality of energy storage modules and at least one load connected to the link, to send signals to control power delivery to the link. - View Dependent Claims (2, 3, 4, 6, 7, 30, 31)
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5. A system to manage energy, comprising:
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at least one energy storage module including;
a power converter, a power converter controller to control operation of the power converter, and at least one energy storage unit connected to the power converter;
a power management controller to control power delivery from the at least one energy storage module to a link and to control power delivery to the at least one energy storage module;
a hardware voltage loop to generate a first signal in response to a line voltage and a voltage command signal from the power converter controller, wherein the line voltage is measured at a node between the power converter and the at least one energy storage unit; and
a hardware current loop to generate a second signal in response to the first signal, a line current, and a command current signal from the power converter controller, wherein the line current is a current between the power converter and the at least one energy storage unit and wherein the converter is adjustable in response to the second signal to apply a predetermined power from the link to the at least one energy storage unit or to supply a selected power from the at least one energy storage unit to the link. - View Dependent Claims (39)
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8. A system to manage energy, comprising:
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a plurality of bi-directional power converters each connectable to a link;
a multiplicity of energy storage units divided into groups, each group of the multiplicity of energy storage units being associated with only one of the plurality of bi-directional power converters, at least one energy storage unit of each group being able to supply power only to the associated one of the plurality of bi-directional power converters and being able to receive power only from the associated one of the plurality of power converters;
a power management controller; and
a signaling connection between the power management controller, each of the plurality of bi-directional power converters and at least one load to send signals to control power delivery to the at least one load. - View Dependent Claims (9, 10, 11, 12, 13, 14, 32, 33)
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15. A method of managing energy, comprising:
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generating a first signal in response to a voltage across at least one energy storage unit and a reference voltage signal, wherein the at least one energy storage unit is adapted to apply power to and absorb power from a link;
generating a second signal in response to a current supplied to and from the at least one energy storage unit, the first signal and a reference current signal; and
adjusting a power stage of a bi-directional converter in response to the second signal to control a level of power applied to and absorbed from the link by the at least one energy storage unit. - View Dependent Claims (16, 17, 18, 19, 34)
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20. A method of managing application of different power levels to a link, comprising:
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controlling a quantity of energy storage modules of a plurality of energy storage modules coupled to the link by selecting which energy storage modules are connected to the link at any given time; and
controlling an amount of power supplied to the link and removed from the link by each energy storage module coupled to the link, wherein each energy storage module of the plurality of energy storage modules includes a bi-directional power converter coupled to the link and a separate group of energy storage units associated only with the bi-directional power converter in the energy storage module, and wherein the bi-directional power converter controls a level of power supplied to the link, and removed from the link, by the separate group of energy storage units. - View Dependent Claims (21, 22, 23, 24, 25, 26, 27, 28, 29, 35)
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36. A method of making a system to manage energy, comprising:
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providing a plurality of energy storage modules, wherein providing each energy storage module includes;
providing a power converter couplable to a link;
providing a power converter controller to control operation of the power converter, and connecting at least one energy storage unit to only the power converter of an associated energy storage module;
providing a power management controller to control power delivery from each energy storage module to the link and to control power delivery to each energy storage module; and
providing a signal connection, between the power management controller, each power converter controller of each of the plurality of energy storage modules and at least one load connected to the link, to send signals to control power delivery to the link. - View Dependent Claims (37, 38)
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Specification