Caterpillar Inc.

Kevin J Sergott

Travis E Barnes

Shivangi Wagle

Ronald C Gayles

Daniel Reese Puckett

Eric Lee Schroeder

Suresh Baddam Reddy

Arvind Sivasubramanian

Eric Wade Cler

Dachuan Yu

Richard George Ingram

Eric A Hutchison

Andrew Nathan Schifferer

Anand Krishnamurthygopalan

Karthik Jayasankaran

Liangtao Zhu

Urvish Joshi

Matthew Colin Mowers

Tyler Bowman

Julia H Jenks

Satish L Kale

Sowmya Nagesh

Kirti Tamhane

Srideep Chatterjee

Kosha B Patel

Vineeth Wilson

A microgrid system includes an electrical bus including at least one electrical load; at least one non-energy storage system asset configured to supply electrical power to the electrical bus; an energy storage system group including: two or more energy storage system assets configured to supply electrical power to the electrical bus, and a system controller operatively coupled to each of the assets on the electrical bus. The system controller is configured to: determine characteristic energy set points and power limits for each of the assets; determine that at least two or more assets have a same priority for power distribution; determine the characteristic power set points for the non-energy storage assets, dispatch the energy storage system assets having the same priority by treating a dispatch for the energy storage system assets as a combined asset.

Systems and methods for multiple energy storage system dispatch

Systems and methods are disclosed for controlling distributed energy resources. Controllers in a peer-to-peer network are configured to act as a dispatch handler for electrical buses connected to respective set of power assets and loads. The controllers are configured to broadcast micro-grid configuration information over the peer-to-peer network to each controller. Each controller is configured to determine a segmentation of the electrical buses into isolated micro-grids; and assign a controller as a supervisor for each of the isolated micro-grids. The controllers are configured such that supervisor controller assigned to isolated micro-grid is configured to determine dispatch commands for power assets associated with the isolated micro-grid to handle load requirements and broadcast the determined dispatch commands over the peer-to-peer network. Each controller is configured to transmit determined dispatch commands to power assets electrically connected to the electrical bus for which the controller acts as dispatch handler to handle the load requirements.

Systems and methods for control of distributed energy resources

A method of allocating power across a microgrid having a plurality of energy storage systems with different power and/or energy capacities, and different states of charge. The method includes allocating a total charge request and/or a total discharge request across the energy storage systems; and limiting the charge and/or discharge of one or more energy storage systems to a submaximal value.

Methods and systems for charging or discharging energy storage systems

A method of allocating power across a microgrid having a plurality of energy storage systems with different power and/or energy capacities, and different states of charge. The method includes allocating a total charge request and/or a total discharge request across the energy storage systems as a function of a usable energy capacity of each energy storage system.

A method for controlling and engine system with a plurality of turbochargers. At least one of the plurality of turbochargers has a turbine valve, a compressor valve, and actuators operable to change the position of the turbine valve. The method comprises controlling the actuator based on the presence of a transient event or a steady state event. During a transient event an engine control module can control the actuators to change the turbine valve to opened and closed positions and the turbine valve to a closed position based on the comparison between a corrected mass flow per turbocharger to a mass flow threshold.

Method for sequential turbo control

An internal combustion engine includes an inline turbocharger and at least a first inline turbocharger that has a first turbine air valve, and a first inline compressor that has a first compressor air valve. A control valve is responsive to commands from an electronic controller to move the air valves between open and closed positions. The electronic controller monitors operating parameters of the engine to diagnose a fault. determine whether an air valve is stuck open or closed, and adjust a priority schedule for activating or deactivating the first inline turbocharger based on the type of fault.

Sequential turbocharger diagnostic system and method

A method for operating an internal combustion engine includes monitoring engine parameters using an electronic controller, determining a surge speed limit for the engine based on a compressor map, determining an offset engine speed based on a margin between the surge speed limit and an engine speed, determining a minimum engine speed based on the margin, applying the offset engine speed to an engine speed signal to provide an adjusted engine speed, and applying the adjusted engine speed to a desired engine speed when a speed of the engine approaches the surge speed limit.

Turbocharger compressor anti-surge engine control strategy and method

A control system for a mobile excavation machine is disclosed. The control system may have a ground engaging work tool, a sensor, and a controller. The sensor may be configured to sense a parameter indicative of a current travel speed of the mobile excavation machine and generate a speed signal in response thereto. The controller may be in communication with the ground engaging work tool and the sensor, and configured to receive the signal. The controller may also be configured to determine an amount of material currently being moved by the work tool and calculate a current productivity value associated with removal of the material based on the speed signal and the determined amount of material currently being moved. The controller may be further configured to control the ground engaging work tool to vary the amount of material currently being moved in response to the current productivity value.

System for automated excavation control based on productivity

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Dunlap, IL, United States of America

Kevin J Sergott