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71.发明授权公开(公告)号：US10298042B2
公开(公告)日：2019-05-21
申请号：US15363876
申请日：2016-11-29
Applicant: NEC Laboratories America, Inc.
Inventor： Seyyed Ali Pourmousavi Kani , Babak Asghari , Ratnesh Sharma
Abstract: Computer-implemented methods and, a system are provided. A method includes constructing by an Energy Management System (EMS), one or more optimization-based techniques for resilient battery charging based on an optimization problem having an EMS cost-based objective function. The one or more optimization-based techniques are constructed to include a battery degradation metric in the optimization problem. The method further includes charging, by the EMS, one or more batteries in a power system in accordance with the one or more optimization-based techniques.
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公开(公告)号：US20190086983A1
公开(公告)日：2019-03-21
申请号：US16037431
申请日：2018-07-17
Applicant: NEC Laboratories America, Inc.
Inventor： Ratnesh Sharma , Korosh Vatanparvar
Abstract: Systems and methods for power management include determining a demand threshold by solving an optimization problem that minimizes peak demand charges and maximizes a usable lifetime for a power storage system. Power is provided to a load from an electrical grid when the load is below the demand threshold and from a combination of the electrical grid and the power storage system when the load is above the demand threshold.
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73.发明申请公开(公告)号：US20190036341A1
公开(公告)日：2019-01-31
申请号：US16006239
申请日：2018-06-12
Applicant: NEC Laboratories America, Inc.
Inventor： Babak Asghari , Mohammad Rasoul Narimani , Ratnesh Sharma
IPC: H02J3/38 , G05B19/042 , H02J13/00
Abstract: A computer-implemented method for controlling a distributed energy storage system (ESS) communicating with one or more microgrids is presented. The method includes assigning, via the processor, a weight to a first objective function pertaining to minimizing demand charge (DC) cost, assigning, via the processor, a weight to a second function pertaining to maximizing photovoltaic (PV) utilization, receiving historical demand profiles including demand data and historical PV profiles including PV data, and determining ESS power and capacity. The method further includes employing a multi-objective DC cost and PV utilization optimization module to obtain a plurality of optimal solutions by concurrently processing the assigned weights of the first and second objective functions, the historical demand and PV profiles, and the ESS power and capacity.
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公开(公告)号：US10114076B2
公开(公告)日：2018-10-30
申请号：US15093263
申请日：2016-04-07
Applicant: NEC Laboratories America, Inc.
Inventor： Feng Guo , Ratnesh Sharma
IPC: G01R31/26 , G01R31/36 , H02J1/00 , H02M7/537 , H02M1/08 , G06F17/50 , G06N7/02 , H02M7/483 , H02M1/00
Abstract: Systems and methods for semiconductor device selection, including identifying a worst operation condition for a plurality of semiconductor devices in a Modular Multilevel Converter (MMC). The identifying includes determining power losses for each of the semiconductor devices under a plurality of operation conditions, and calculating a maximum junction temperature for each of the plurality of semiconductor devices at each of the plurality of operation conditions. A maximum junction temperature under the identified worst operation condition is determined for each of a plurality of commercially available semiconductor devices which satisfy a threshold voltage rating, and all semiconductor devices which satisfy the threshold voltage rating and a maximum junction temperature threshold condition are compared to identify a semiconductor device with a lowest system cost.
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公开(公告)号：US10108749B2
公开(公告)日：2018-10-23
申请号：US14933696
申请日：2015-11-05
Applicant: NEC Laboratories America, Inc.
Inventor： Yanyi He , Ratnesh Sharma
IPC: G05B19/042 , G06F17/30 , G06N99/00
Abstract: Systems and methods for optimizing power flows using a harmony search, including decoupling phases in a multi-phase power generation system into individual phase agents in a multi-phase power flow model for separately controlling at least one of phase variables or parameters. One or more harmony segments from harmony memory are ranked and selected based on a utility value determined for each of the decoupled phases. A harmony search with gradient descent learning is performed to move the selected harmony segments to a better local neighborhood. A new utility value for each of the selected segments is determined based on historical performance, and the harmony memory is iteratively updated if one or more of the new utility values are higher than a utility value of a worst harmony segment stored in the harmony memory.
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Patent Agency Ranking
公开(公告)号：US20180166880A1
公开(公告)日：2018-06-14
申请号：US15833301
申请日：2017-12-06
Applicant: NEC Laboratories America, Inc.
Inventor： Ali Hooshmand , Ratnesh Sharma , Ramin Moslemi
CPC classification number: H02J3/14 , G05B15/02 , G06F17/18 , G06N20/00 , G06Q10/04 , H02J3/32 , H02J7/0013 , H02J7/007 , H02J2003/003 , H02J2007/0067
Abstract: A computer-implemented method, system, and computer program product are provided for demand charge management. The method includes receiving an active power demand for a facility, a current load demand charge threshold (DCT) profile for the facility, and a plurality of previously observed load DCT profiles. The method also includes generating a data set of DCT values based on the current load DCT profile for the facility and the plurality of previously observed load DCT profiles. The method additionally includes forecasting a next month DCT value for the facility using the data set of DCT values. The method further includes preventing actual power used from a utility from exceeding the next month DCT value by discharging a battery storage system into a behind the meter power infrastructure for the facility.
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77.发明申请公开(公告)号：US20180048154A1
公开(公告)日：2018-02-15
申请号：US15635928
申请日：2017-06-28
Applicant: NEC Laboratories America, Inc.
Inventor： Feng Guo , Ratnesh Sharma , Siqi Wang
CPC classification number: H02J3/16 , G06N7/005 , H02J3/14 , H02J3/383 , H02J3/385 , H02J3/386 , H02J13/0006 , H02J2003/003 , H02J2003/007 , Y02E10/563 , Y02E10/58 , Y02E10/763 , Y02E40/34 , Y02E40/72 , Y04S10/123
Abstract: A computer-implemented method for controlling voltage fluctuations of a microgrid including a plurality of distributed generators (DGs) is presented. The computer-implemented method includes collecting, by a resiliency controller, measurement data from the microgrid, using a model predictive control (MPC) module to distribute reactive power to each of the DGs of the microgrid, and using a droop based controller to guide operation of each of the DGs of the microgrid.
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公开(公告)号：US09733657B2
公开(公告)日：2017-08-15
申请号：US14292851
申请日：2014-05-31
Applicant: NEC Laboratories America, Inc.
Inventor： Yanzhu Ye , Ratnesh Sharma
IPC: H02J7/04 , G05F1/66 , H02J3/24 , H02J3/32 , H02J3/38 , H02J7/34 , H02J7/35 , G05B15/02 , G06N5/02 , G06N7/02
CPC classification number: G05F1/66 , G05B15/02 , G06N5/027 , G06N7/02 , H02J3/24 , H02J3/32 , H02J3/383 , H02J3/386 , H02J7/34 , H02J7/35 , Y02E10/563 , Y02E10/566 , Y02E10/763 , Y02E10/766 , Y02E70/30 , Y10T307/367
Abstract: Systems and methods are disclosed to control a power system with an energy generator and a hybrid energy storage system. The system includes two or more energy storage system, each with different energy storage capacity and energy discharge capacity. The system includes developing data for one or more control variables refined from expert knowledge, trials and tests; providing the control variables to a fuzzy logic controller with a rule base and membership functions; and controlling the energy generator and the hybrid energy storage system using the fuzzy logic controller.
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79.发明申请公开(公告)号：US20170117744A1
公开(公告)日：2017-04-27
申请号：US15222604
申请日：2016-07-28
Applicant: NEC Laboratories America, Inc.
Inventor： Yanzhu Ye , Ratnesh Sharma , Feng Guo
CPC classification number: H02S40/38 , H01L31/02021 , H02J7/35 , Y02E10/566
Abstract: Systems and methods are disclosed for storing photovoltaic (PV) generation by applying reinforcement learning (RL)-based control to battery storages for PV ramp rate control; and exchanging energy dynamically to limit a ramp rate of the PV power output and maintaining a battery state of charge level at a predefined level to minimize required battery size and extend the battery life cycles.
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公开(公告)号：US09535480B2
公开(公告)日：2017-01-03
申请号：US14555176
申请日：2014-11-26
Applicant: NEC Laboratories America, Inc.
Inventor： Yanzhu Ye , Ratnesh Sharma
CPC classification number: G06F1/263 , G05B13/0275 , G06F1/3212 , G06N7/02 , H02J1/10 , H02J7/345 , H02J7/35
Abstract: A method of controlling power in a hybrid energy storage system that may include controlling power through the at least one battery storage element and the capacitor storage element using a multi-level power management system. In some embodiments, the multi-level power management system includes at least a long term battery management layer and a real time power management layer. The long term battery management layer can be for estimating and managing a life cycle for the battery. The real time power management layer can be for managing power sharing between the at least one battery storage element and the at least one capacitor storage element at each time instant dependent upon adjustments to battery performance based upon the long term battery management layer.
Abstract translation: 一种控制混合能量存储系统中的功率的方法，其可以包括通过使用多级电源管理系统来控制通过所述至少一个电池存储元件和所述电容器存储元件的功率。 在一些实施例中，多级电源管理系统至少包括长期电池管理层和实时功率管理层。 长期的电池管理层可用于估计和管理电池的使用寿命。 实时功率管理层可以用于根据长期电池管理层根据对电池性能的调节来管理在每个时刻的至少一个电池存储元件和至少一个电容器存储元件之间的功率共享。
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