Presented herein are systems for vehicle power control. The system includes a first controller arranged in a first hierarchical layer of a control topology, the first controller configured to control a first source of energy of a vehicle based on first data of the first source of energy, a second controller arranged in the first hierarchical layer of the control topology, the second controller configured to control a second source of energy of the vehicle based on second data of the second source of energy, and a third controller configured to receive the first data and the second data from the first hierarchical layer, generate a control signal based on the first data and the second data, and transmit the control signal to a component of the vehicle to control the component of the vehicle.

Systems and methods are provided for managing propulsion power sourcese.g., a fuel cell stack, a power-dense battery back, and an energy-dense battery packof a fuel cell vehicle. Such systems and methods can use a driving condition-to-power source mapping to identify which power source(s) of the fuel cell vehicle is/are appropriate for propelling the fuel cell vehicle under different driving condition (e.g., a rapid acceleration vs. cruise driving) based on relative power-density vs. energy-density demanded from a propulsion system of the fuel cell vehicle under the different driving conditions.

An apparatus for controlling a cold start and a cold shutdown (CSD) of a fuel cell system and a method thereof are provided. A monitoring device may individually monitor at least one of an amount of accumulated power and/or an accumulated driving time of one or more fuel cell stacks. A controller may select a representative fuel cell stack among the one or more fuel cell stacks, based on the amount of accumulated power and/or the amount of accumulated driving time, performs a cold start of the representative fuel cell stack, and perform cold starts of the remaining fuel cell stacks, using power of the representative fuel cell stack after the cold start of the selected representative fuel cell stack is completed. The apparatus makes power used for a cold start and a CSD highly efficient.

Disclosed are a fuel cell power net system and a method for controlling the same. The fuel cell power net system includes: a fuel cell controller configured to control current output from a fuel cell unit; at least one DC/DC converter configured to boost DC voltage and to output the boosted DC voltage; a battery connected to the fuel cell unit in parallel so as to supply DC power to the fuel cell unit; a load controller configured to provide demand output information; and a fuel cell power controller configured to receive the demand output information, to calculate output levels required by the fuel cell unit and the battery, to compare a current output level of the fuel cell unit with the output level required by the fuel cell unit, and to provide a control value to the fuel cell controller depending on a result of the comparison.

A fuel cell system for a vehicle, has a fuel cell unit that includes a fuel cell stack and a coolant system. A control system is configured to preemptively determine that a fuel cell system power ramp-down event will occur when a decrease in power of the fuel cell system would be required as the vehicle is approaching a portion of a route associated with a low power demand from the fuel cell system. The fuel cell system is controlled by reducing a target inlet coolant temperature, and by applying a first response strategy that involves continuously reducing a flow rate of the coolant flow, and/or a second response strategy that may involve continuously and gradually increasing the flow rate of the coolant flow and then, in some situations, continuously and gradually decreasing the flow rate of the coolant flow.

A method for controlling a fuel cell device includes receiving a voltage measured at the time of power generation of the fuel cell device and determining whether the degradation level of the fuel cell device is normal based on a comparison of the voltage and a first threshold value that decreases with increasing operational amount of the fuel cell device and that corresponds to the operational amount of the fuel cell device at the measurement time of the voltage.

The disclosure provides a fuel cell-based control method, a control device and a well-site stimulation method are provided. The control device includes: selecting at least one from a plurality of first fuel cells to form a fuel cell stack, and distributing gas for the fuel cell stack. Each first fuel cell forming the fuel cell stack is a second fuel cell, and distributing gas for the fuel cell stack includes: distributing gas with a first gas usage amount to the fuel cell stack; and distributing the gas with the first gas usage amount according to a cell gas distribution ratio so as to provide gas with a corresponding second gas usage amount to each second fuel cell respectively.

A fuel cell generation system control apparatus performs a method for controlling power of a fuel cell generation system. A monitoring device monitors power of the one or more fuel cell modules. A controller compensates for power of one or more first fuel cell modules by one or more second fuel cell modules, based on the monitored power, and performs power control of the one or more fuel cell modules. The fuel cell generation system control apparatus addresses a problem in which power of the fuel cell generation system is reduced as there is a change in external environment or an increase in driving time upon power control of a multi-module fuel cell system.

An illustrative example controller for a fuel cell power plant includes at least one processor and memory associated with the processor. The processor is configured to control operation of the fuel cell power plant during an islanded mode of operation wherein the fuel cell power plant provides output power to a load. The processor is configured to control the operation of the fuel cell power plant in the islanded mode by adjusting a droop gain of the controller to change the output power of the fuel cell power plant in response to a change in demand from the load. While adjusting the droop gain, the processor is configured to maintain a portion of the demand from the load met by the output power of the fuel cell power plant within a predetermined allocation of islanded mode load sharing assigned to the fuel cell power plant, maintain a ramp up rate of the output power of the fuel cell power plant within a predetermined maximum ramp up capability of the fuel cell power plant, and maintain a frequency of the output power of the fuel cell power plant within a predetermined range.

A CEMS server obtains meteorological information and hydrogen station information. The CEMS server predicts a power demand of a microgrid after a designated period. When the power demand of the microgrid after the designated period exceeds contract power and when an amount of electric power to be reduced exceeds a prescribed value, the CEMS server generates a hydrogen addition notification and transmits the generated hydrogen addition notification to an FCEV and/or a communication terminal. The amount of electric power to be reduced is a difference between the contract power and the power demand.