Abstract: 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.

Abstract: A micro-grid system for providing power to a load includes a plurality of gensets and energy storage units (ESU) in parallel. An asset management controller is configured to determine a genset cost function for the gensets based on at least an efficient load factor, and determine an ESU cost function based on at least the a discharge power loss (DPL) and a charge power loss (CPL). The AMC assigns a priority to each ESU and each genset based on the cost function and selectively activates the power supplies based on the priority and a power demand of the load and a reserve. The AMC determines an available reserve among activated power supplies then selectively distributes the load among activated power supplies and reserve among the available reserve.

Abstract: A hybrid micro-grid system for providing power to a load connected to a common bus. The system includes at least one renewable power source, at least one genset, at least one energy storage unit, and an asset management controller operatively coupled to the power sources supply power to the common bus. The AMC is configured to determine a renewable cost function, a genset cost function, and a storage cost function, then assigns a priority of each power source based on the corresponding cost function. The AMC determines a cascade of the power sources based on the determined priority and selectively distributes a power demand of the load between each power source based on the determined cascade.

Abstract: A micro-grid system for providing power to a load includes a plurality of gensets and energy storage units (ESU) in parallel. An asset management controller is configured to determine a genset cost function for the gensets based on at least an efficient load factor, and determine an ESU cost function based on at least the a discharge power loss (DPL) and a charge power loss (CPL). The AMC assigns a priority to each ESU and each genset based on the cost function and selectively activates the power supplies based on the priority and a power demand of the load and a reserve. The AMC determines an available reserve among activated power supplies then selectively distributes the load among activated power supplies and reserve among the available reserve.

Abstract: A hybrid micro-grid system for providing power to a load connected to a common bus. The system includes at least one renewable power source, at least one genset, at least one energy storage unit, and an asset management controller operatively coupled to the power sources supply power to the common bus. The AMC is configured to determine a renewable cost function, a genset cost function, and a storage cost function, then assigns a priority of each power source based on the corresponding cost function. The AMC determines a cascade of the power sources based on the determined priority and selectively distributes a power demand of the load between each power source based on the determined cascade.

Abstract: An electric drive machine includes an electric drive system including an internal combustion engine and an electrical power generator coupled to the internal combustion engine. An electronic controller is in control communication with the electric drive system and is configured to determine an estimated temperature of a rotor of the electrical power generator at least in part by determining a rotor temperature rise estimation, compare the estimated rotor temperature to a rotor temperature threshold, and initiate an excessive temperature action if the estimated rotor temperature is greater than or equal to the rotor temperature threshold.

Abstract: An electric drive machine includes an electric drive system including an internal combustion engine and an electrical power generator coupled to the internal combustion engine. An electronic controller is in control communication with the electric drive system and is configured to determine an estimated temperature of a rotor of the electrical power generator at least in part by determining a rotor temperature rise estimation, compare the estimated rotor temperature to a rotor temperature threshold, and initiate an excessive temperature action if the estimated rotor temperature is greater than or equal to the rotor temperature threshold.

Abstract: An off-highway truck with an electric powertrain is provided. The off-highway truck includes a set of steerable idle wheels supported by a chassis. An engine is configured to provide the off-highway truck with mechanical energy. At least one electric power generator is operably coupled to the engine and configured to convert at least a portion of the mechanical energy provided by the engine into electric energy. At least one electric motor is operably coupled to the electric power generator. First and second final drives are configured to rotate at least one drive wheel that is non-steerable. A differential is operably coupled to the at least one electric motor for distributing the torque produced by the at least one electric motor to the first and second final drives.

Abstract: A cooling system (500) for an electric drive system includes a cooling duct (502) extending between a first component and a second component. A motor (336) driven fan (510) creates an airflow within the duct. A first temperature sensor measures a first temperature of the first component and a second temperature sensor measures a second temperature of the second component. An electronic controller (540) receives the first temperature and calculates a first temperature difference between the first temperature and the first temperature limit (802) to generate a first command (836) for the motor (336). A second temperature difference between the second temperature and the second temperature limit (802) generates a second command (836) for the motor (336). The controller (540) then selects the greater of the first command (836) and the second command (836) to yield the maximum command (836), and controls the motor (336) based on the maximum command (836).

Abstract: An off-highway truck with an electric powertrain is provided. The off-highway truck includes a set of steerable idle wheels supported by a chassis. An engine is configured to provide the off-highway truck with mechanical energy. At least one electric power generator is operably coupled to the engine and configured to convert at least a portion of the mechanical energy provided by the engine into electric energy. At least one electric motor is operably coupled to the electric power generator. First and second final drives are configured to rotate at least one drive wheel that is non-steerable. A differential is operably coupled to the at least one electric motor for distributing the torque produced by the at least one electric motor to the first and second final drives.

Abstract: A cooling system (500) for an electric drive system includes a cooling duct (502) extending between a first component and a second component. A motor (336) driven fan (510) creates an airflow within the duct. A first temperature sensor measures a first temperature of the first component and a second temperature sensor measures a second temperature of the second component. An electronic controller (540) receives the first temperature and calculates a first temperature difference between the first temperature and the first temperature limit (802) to generate a first command (836) for the motor (336). A second temperature difference between the second temperature and the second temperature limit (802) generates a second command (836) for the motor (336). The controller (540) then selects the greater of the first command (836) and the second command (836) to yield the maximum command (836), and controls the motor (336) based on the maximum command (836).