System and method for managing battery discharge during critical peak pricing intervals
First Claim
1. A method for managing battery discharge during critical peak pricing (CPP) intervals, the method comprising:
- providing an alternating current (AC) client with a fluctuating AC grid demand, and a direct current (DC)-to-AC inverter having an input connected to a battery and selectable inversion power output levels connected to the AC client;
selectively supplying auxiliary power from the DC-to-AC inverter to at least partially satisfy the AC grid demand;
receiving a CPP warning for a first time interval;
determining a present battery capacity state of charge (SoC);
determining a target peak demand for the AC client over a second time interval that begins at a start of the first time interval, where a target peak demand defines a desired maximum threshold AC grid demand;
in response to determining the present battery capacity SoC and the target peak demand, determining excess battery capacity; and
,using the excess battery capacity to supply auxiliary energy to the AC client during the CPP first time interval.
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Accused Products
Abstract
A system and method are provided for managing battery discharge during critical peak pricing (CPP) intervals. The method provides an alternating current (AC) client with a fluctuating AC grid demand, and a direct current (DC)-to-AC inverter having an input connected to a battery and selectable inversion power output levels connected to the AC client. In response to receiving a CPP warning for a first time interval, a present battery capacity state of charge (SoC) is determined. Also determined is a target peak demand for the AC client over a second time interval that includes the first time interval. The target peak demand defines a desired maximum threshold AC grid demand. In response to determining the present battery capacity SoC and the target peak demand, excess battery capacity is determined, and the excess battery capacity is used to supply auxiliary energy to the AC client during the CPP first time interval.
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Citations
18 Claims
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1. A method for managing battery discharge during critical peak pricing (CPP) intervals, the method comprising:
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providing an alternating current (AC) client with a fluctuating AC grid demand, and a direct current (DC)-to-AC inverter having an input connected to a battery and selectable inversion power output levels connected to the AC client; selectively supplying auxiliary power from the DC-to-AC inverter to at least partially satisfy the AC grid demand; receiving a CPP warning for a first time interval; determining a present battery capacity state of charge (SoC); determining a target peak demand for the AC client over a second time interval that begins at a start of the first time interval, where a target peak demand defines a desired maximum threshold AC grid demand; in response to determining the present battery capacity SoC and the target peak demand, determining excess battery capacity; and
,using the excess battery capacity to supply auxiliary energy to the AC client during the CPP first time interval. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A system for managing battery discharge during critical peak pricing (CPP) intervals, the system comprising:
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a battery to supply auxiliary power; a direct current-to-alternating current (DC-to-AC) inverter having an input connected to a battery and selectable inversion power output levels connected to an AC client to supply auxiliary power; a measurement module having an interface to receive a CPP warning for a first interval of time, an interface connected to the battery to determine a present battery capacity state of charge (SoC), and an interface connected to the AC client to determine a target peak demand for the AC client over a second time interval that begins at a start of the first time interval, where a target peak demand defines a desired maximum threshold AC grid demand; and
,a controller having an interface to receive an excess battery capacity determination from the measurement module, responsive to the target peak demand and the present battery capacity SoC, and an interface connected to the DC-to-AC inverter to command the supply of the determined excess battery capacity during the CPP first time interval. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17, 18)
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Specification