Abstract: A method for jump-starting a hydrogen fuel cell-powered aircraft is disclosed. The method accesses a fuel cell stack containing latent oxygen therein. Accesses a hydrogen fuel source and provides hydrogen from the hydrogen fuel source into the fuel cell stack causing the hydrogen to mix with the latent oxygen in the fuel cell stack and generate a voltage. The voltage is then provided to a component of the hydrogen fuel cell-powered aircraft such that additional oxygen is introduced to the fuel stack.

Abstract: Compositions and methods related to conducting polymeric compositions that can be used in devices for storage of electrical energy are generally provided. The composition may include redox active polymers that include an electrophilic nitrogen containing heterocycle and an electron rich aromatic compound. The electroactive polymers may be formed by polymerizing an electrophilic nitrogen containing heterocycle-based unit with an electron rich aromatic compound in the presence of heat and an acid-based catalyst. The resulting electroactive polymers may be suitable as polymer films for use as electrodes in energy storage devices. The polymer films disposed as electrodes can improve the energy density of such devices.

Abstract: A system includes a fuel cell stack (FCS) and a controller. The controller adjusts a stack current of the FCS to a desired amount to cause the FCS to provide a power commensurate with a power request. The controller employs a stack power model of the FCS in adjusting the stack current.

Abstract: An electrochemical fuel cell measures ethanol in human breath and a process maintains such an electrochemical fuel cell. The electrochemical fuel cell includes a first electrode (1), a second electrode (2) and a third electrode (3). The first electrode (1) is used as a measuring electrode in a regular operating mode of the electrochemical fuel cell and as a measuring electrode or as a reference electrode in a maintenance mode of the electrochemical fuel cell. The second electrode (2) is used as a counter electrode in the regular operating mode of the electrochemical fuel cell and as a measuring electrode or as a reference electrode in the maintenance mode of the electrochemical fuel cell. The third electrode (3) is used as a counter electrode in the maintenance mode of the electrochemical fuel cell.

Abstract: The present disclosure relates to a composite electrolyte membrane and a method of manufacturing the same. A catalyst composite layer in the composite electrolyte membrane uniformly includes a catalyst and an antioxidant, whereby it is possible to inhibit generation of hydrogen peroxide by side reaction. In addition, the catalyst composite layer is formed as a separate layer, whereby the catalyst composite layer is instead degraded, greatly inhibiting membrane degradation even in the case in which radicals attack an ionomer due to small side reaction. Furthermore, it is possible to control the position of the catalyst composite layer including the catalyst and the antioxidant by adjusting the thicknesses of a second ion exchange layer and the catalyst composite layer, whereby it is possible to protect a specific degradation position, and therefore it is possible to efficiently improve membrane durability.

Abstract: Electric vehicle (EV) charging stations for: (i) preventing damage to a battery of an EV charging station, and (ii) maintaining fast charging of the battery of the EV charging station. An EV charging station controller determines if an input power to the EV charging station is above an input power threshold value, and, if so, determines if a charge level of the battery of the EV charging station is below a low charge threshold level. If the charge level is below the low charge threshold level, a portion of the input power may be reserved for the battery of the EV charging station.

Abstract: A system for detecting humidity level at a cathode of a fuel cell stack including one or more PEMFCs and determining a flooding probability of the stack based on the humidity level, includes a stack including a plurality of PEMFCs, each PEMFC including an exhaust; voltage detector; humidity detector; and controller. The controller may be configured to: receive a voltage as measured at an anode of one or more of the PEMFCs with the voltage detector; determine a humidity level at the exhaust of the one or more of the PEMFCs; and implement one or more actions based on the voltage and the humidity level, the actions including: reduce a load on the PEMFC; increase an air flow at a cathode of the one or more PEMFCs; decrease an inlet humidity at an inlet to the one or more PEMFCs; or increase a temperature of the one or more PEMFCs.

Abstract: Battery module includes a plurality of batteries (secondary batteries), one or more bus bars that electrically connect the plurality of batteries, and cooling plate that is in contact with bus bar and has one or more passages through which a coolant flows. Each of the plurality of batteries has: an electrode body; an outer can that accommodates the electrode body; a lid that seals an opening of the outer can; and positive electrode terminal and negative electrode terminal that are individually inserted through a pair of through holes provided on the lid, are insulated from the lid, and are electrically connected to the electrode body. One of positive electrode terminal and negative electrode terminal is connected to bus bar.

Abstract: A facility receives an indication of a rate of energy output sought from a production array of solar panels. The facility controls a power inverter to which the production array is connected to deliver to an electrical grid to which the power inverter is connected a rate of energy output that is based on the indicated rate of energy output.

Abstract: A hydrogen production supply system that produces hydrogen gas to be supplied to a hydrogen storage tank, the hydrogen production supply system including a control circuit configured to control an operation load ratio of the hydrogen production apparatus to a predetermined operation load ratio, to increase the operation load ratio of the hydrogen production apparatus to a first operation load ratio larger than the predetermined operation load ratio at first timing, and to decrease the operation load ratio of the hydrogen production apparatus to the predetermined operation load ratio from the first load operation ratio at second timing, wherein an increase in the operation load ratio at the first timing takes precedence over a decrease in the operation load ratio at the second timing.

Abstract: Disclosed is a power control system and method of a fuel cell including a fuel cell that generates electricity; a load device that is electrically connected to the fuel cell; a DC/DC converter that is disposed between the fuel cell and the load device, and converts power between a low side of the DC/DC converter electrically connected to the fuel cell and a high side of the DC/DC converter electrically connected to the load device; a battery that is electrically connected to the high side of the DC/DC converter in parallel with the load device; and a controller that monitors a voltage of the high side of the DC/DC converter or a voltage of the low side of the DC/DC converter, and controls output power of the fuel cell or power consumption of the load device based on the monitored voltage of the high side or the monitored voltage of the low side.

Abstract: A vehicle-mounted power supply system includes a sampling circuit, a voltage comparison control circuit, a power conversion circuit, and a motor. The sampling circuit is configured to obtain an output voltage value of an output terminal of the power conversion circuit. The voltage comparison control circuit is configured to output a first power adjustment signal to the power conversion circuit when the output voltage value is less than a first target voltage value. The power conversion circuit is configured to increase an output voltage to a first target voltage based on the first power adjustment signal, to output the output voltage to the motor and increase an input voltage of the motor. When a voltage of a power supply is low, the input voltage of the motor can be maintained at a required level.

Abstract: A system, module, and method for generating reliable, high quality power on demand and off-grid includes a photovoltaic array for delivering DC power; a generator having a size ranging from about 5 kW to about 30 kW, and comprising an engine powered by hydrocarbon gas filtered through a coalescing filter and comprising an extended lubrication system; an uninterruptible power supply (UPS) comprising a storage battery, the UPS being coupled to the photovoltaic array for receiving the DC power, and to the generator by a bi-directional inverter for receiving, transmitting, and qualifying DC or AC power; and an intelligent controller coupled to the UPS for controlling output of the DC or AC power to at least one air compressor capable of providing compressed air to one or more pneumatic devices.

Abstract: Oxidizer and fuel supply system for internal combustion engines, which includes oxygen supplies for the engines, particle filters, oxygen generators using nanofilters, pressurized oxygen bottles and air compressors, O2 loading media, by means of bottles, carboys or interchangeable tanks or hoses, Complementary means of nanomolecular membrane filters that separate O2 from air, performing the separation by means of aspiration or suction from the combustion engine or the suction or impulsion of a pump or compressor driven by an electric motor or mechanically by the combustion engine itself; Storage means for the separated or obtained O2; means for controlling the variable fuel/O2 mixture by means of a processor or an ECU (engine control unit); and as fuel: synthetic fuel, hydrocarbons, alcohols or hydrogen.

Abstract: A computer implemented method, a control unit and a computer program for determining a configuration of a battery pack having one or more battery modules configured to be operationally connected as a string of battery modules, wherein a battery module includes a radio frequency identification, RFID, reader configured to read a radio frequency identification, RFID, tag of an adjacent battery module, by receiving first data from a first battery module (BM1), wherein the first data includes a module identifier of the first battery module (BM1) associated with second data of a second battery module (BM2) adjacent to the first battery module (BM1), the second data including at least a module identifier of the second battery module (BM2); and determining the configuration of the battery pack based on the first and second data.

Abstract: A system for reducing overdraw of power in a vehicle includes a power source having a battery and a fuel cell circuit. The system further includes an ECU that transmits a power limit signal to a vehicle controller, the power limit signal corresponding to an instantaneous maximum amount of power of the power source. The ECU also determines a battery allowed power corresponding to an amount of power available to be drawn from the battery to cause the SOC of the battery to remain above a lower SOC threshold. The ECU also determines a current battery power draw from the battery corresponding to an instantaneous amount of power being drawn from the battery. The ECU is designed to reduce the instantaneous maximum amount of power in the power limit signal when the current battery power draw is greater than the battery allowed power, reducing the current battery power draw.

Abstract: A fuel cell system includes a first fuel cell stack, a second fuel cell stack, a supply pipeline having a branching portion, a discharge pipeline having a merging portion, a first branching pipeline, a second branching pipeline, a first merging pipeline and a second merging pipeline. Sizes of cross sections of flows of the respective pipelines are the same. A length of the first branching pipeline connected to the branching portion and the first fuel cell stack is shorter than a length of the second branching pipeline connected to the branching portion and the second fuel cell stack. A length of the first merging pipeline connected to the merging portion and the first fuel cell stack is greater than a length of the second merging pipeline connected to the merging portion and the second fuel cell stack.

Abstract: A load access detection method, a switch circuit, and a battery management system, relating to the field of circuit technology. The load access detection method includes: detecting a voltage at a first detection point; detecting a voltage at a second detection point; if a voltage difference between the voltage at the first detection point and the voltage at the second detection point is less than or equal to a preset voltage threshold, controlling a switch circuit to enter a pre-charging mode, and pre-charging a load capacitor in the load circuit through the battery pack, where a charging current of the switch circuit in the pre-charging mode is less than a charging current of the switch circuit in a charging mode.

Abstract: The fuel cell system of the present disclosure includes: a fuel cell that includes a membrane electrode assembly including a proton conducting ceramic electrolyte membrane, a cathode disposed on a first surface of the electrolyte membrane, and an anode disposed on a second surface of the electrolyte membrane, the fuel cell generating electric power through an electrochemical reaction using a fuel gas and an oxidant gas; a power source that applies a voltage to the fuel cell; and a controller. In a shutdown process, the controller controls the power source to apply the voltage to the fuel cell such that a terminal voltage of the fuel cell is equal to or higher than an open circuit voltage of the fuel cell.

Abstract: Operating a machine includes supplying electric power from a fuel cell to a power bus connected to an electric motor and an energy storage device in a machine operated at a work site, and determining an expected efficiency gain condition based on at least one of terrain data of the work site or machine activity data of the machine. Operating a machine further includes prognostically limiting a power output of the fuel cell based on the determining an expected efficiency gain condition, and charging the energy storage device during occurrence of the expected efficiency gain condition using at least one of a regenerative energy device or the fuel cell. The energy storage device may be discharged during prognostically limiting a power output of the fuel cell so as to share a load demand of the power bus between the fuel cell and the energy storage device. Related apparatus and control logic is also disclosed.

Abstract: Improved membrane electrode assemblies, cation-associating components thereof, and methods of making and treating the same are provided. Membrane electrode assemblies may include an ionomer having a first pKa value, and a water-insoluble net polymer having a weakly-acidic functional group, wherein the weakly-acidic functional group has a second pKa value greater than the first pKa value.

Abstract: A method of controlling charging of an electronic device includes estimating a usage time value that corresponds to an anticipated future occurrence of usage of the electronic device; and estimating a resume time value that corresponds to a time for charging to commence to allow for completion of charging from a first predetermined state of charge value to a second predetermined state of charge value by the usage time value. The method also includes charging a battery of the electronic device using electrical power supplied by a charging device until a current state of charge of the battery reaches the first predetermined state of charge value, entering, by the electronic device, a deactivated mode after the current state of charge reaches the first predetermined state of charge value, and causing the electronic device to return to the activated mode according to the resume time value.

Abstract: An inverter and battery charger system that uses no power magnetic components to convert DC power supply from a plurality of batteries to AC power and achieves very high efficiency and small size. The inverter takes advantage of the different voltages in a series string of batteries to create small voltage steps to approximate a sinewave or other waveforms. By changing the timing where the voltage steps are selected, different frequencies can be obtained. The low frequency operation of the inverter produces little radio frequency interference. The battery charger applies charging current to the various nodes in the series string of battery cells to charge each one as needed to accommodate the differing levels of discharge used to make a sinewave or other waveform.

Abstract: A fuel cell system includes a fuel cell stack and a control device that controls operation of the fuel cell system based on a measured voltage value measured by a voltage sensor. When the fuel cell system is started and a value measured by a temperature sensor is equal to or less than a temperature determined in advance, the control device raises the voltage of the fuel cell stack until a voltage condition determined in advance is met, by supplying a cathode with an oxidant gas before current sweep is started. The control device sets a voltage command value and a current command value such that an operation point of the fuel cell stack is on an equal power line of the fuel cell stack when the operation point is caused to transition in at least a part of a transition period.

Abstract: A control method for a fuel cell system, the fuel cell system including a hydrogen storage part and a fuel cell stack that generates electric power using hydrogen supplied from the hydrogen storage part, the fuel cell system being mounted on a towed portion of a moving body that includes the towed portion and a towing portion, the fuel cell system being electrically connected to the towing portion, the towing portion including a battery and a drive device performing driving in response to supply of electric power, the towed portion being towed by the towing portion, the control method includes: acquiring remaining amount information indicating a remaining amount of the battery, and starting supply of electric power to the towing portion when it is determined that the remaining amount of the battery is equal to or less than a threshold based on the remaining amount information.

Abstract: A fuel cell system includes a fuel cell generator, a rechargeable energy storage circuit, an auxiliary load, a converter circuit, and a switch circuit. The fuel cell generator is operable to generate electrical power in a stack output signal. The auxiliary load is powered by the rechargeable energy storage circuit while in a first mode, and powered by a local signal while in a second mode. The converter circuit is operable to convert the stack output signal into a plurality of recharge signals while in the first mode and in the second mode, and convert the stack output signal into the local signal while in the second mode. The switch circuit is operable switch the plurality of recharge signals to one or more electric vehicles, and switch the local signal to the auxiliary load while in the second mode.

Abstract: A metal support for an electrochemical element where the metal support includes a plate face, has a plate shape as a whole, and has a warping degree of 1.5×10?2 or less determined by calculating a least square value through the least squares method using at least three points in the plate face of the metal support, calculating a first difference between the least square value and a positive-side maximum displacement value on a positive side with respect to the least square value and a second difference between the least square value and a negative-side maximum displacement value on a negative side that is opposite to the positive side with respect to the least square value, and dividing the sum of the first difference and the second difference by a maximum length of the plate face of the metal support that passes through a center of gravity.

Abstract: A method of regulating an output voltage of a switched mode power supply having a variable input voltage and at least one power switch is provided. The method includes generating a control signal for the at least one power switch of the switched mode power supply based at least in part on a control voltage, the control signal having a duty cycle. The method also includes generating a reference voltage based at least in part on the duty cycle of the control signal and a maximum duty cycle, and generating the control voltage based at least in part on the reference voltage and the output voltage.

Abstract: The invention relates to a control device (10) for a fuel cell stack (14), the control device being set up to actuate the fuel cell stack (14) using a predetermined current (IV) and to measure the resulting voltage (U) and to compare this with a reference voltage (UR). The predetermined current (IV) depends on the reference voltage (UR) by means of a sum of at least two exponential functions whose argument in each case contains the reference voltage (UR). The control device (10) is designed to ascertain the reference voltage (UR) by approximately reversing the correlation between the predetermined current and the reference voltage (UR) using an iterative approximation algorithm.

Abstract: A battery module includes a first battery cell and a second battery cell respectively having a positive electrode lead and a negative electrode lead and connected to each other in series; and a short circuit inducing member having one longitudinal side interposed between the negative electrode lead of the first battery cell and the positive electrode lead of the second battery cell and the other longitudinal side located between the positive electrode lead of the first battery cell and the negative electrode lead of the second battery cell. When a potential difference between the negative electrode lead of the first battery cell and the positive electrode lead of the second battery cell increases over a reference value, the other longitudinal side of the short circuit inducing member makes flexural deformation toward the negative electrode lead of the second battery cell to come into contact with the negative electrode lead.

Abstract: Improved membrane electrode assemblies, cation-associating components thereof, and methods of making and treating the same are provided. Membrane electrode assemblies may include an ionomer having a first pKa value, and a water-insoluble net polymer having a weakly-acidic functional group, wherein the weakly-acidic functional group has a second pKa value greater than the first pKa value.

Abstract: A fuel cell system includes a fuel cell stack made by stacking a plurality of cells and configured to generate power by being supplied with fuel gas and oxidation gas, a high-voltage battery configured to supplement the power generated by the fuel cell stack while being charged with the power generated by the fuel cell stack or being discharged, a converter provided between the fuel cell stack and the high-voltage battery and configured to change an output voltage or an output current of the fuel cell stack, a power control unit configured to control the fuel cell stack to generate power when the fuel cell stack is requested to be diagnosed, the power control unit being configured to adjust the output current of the fuel cell stack to a predetermined current, and a voltage sensing unit configured to sense a voltage of the fuel cell stack or voltages of the plurality of cells included in the fuel cell stack in the state in which the output current of the fuel cell stack is the predetermined current.

Abstract: A battery management system (BMS) recognition system, comprising: a master BMS including a master light emitter, the master BMS being configured to flicker the master light emitter to transmit an operation mode shifting signal to a slave BMS when it is intended to shift an operation mode of the slave BMS; and a slave BMS including a slave light receiver configured to correspond to the master light emitter, the slave BMS being configured to: recognize the flickering of the master light emitter through the slave light receiver; and shift the operation mode thereof in response to the operation mode shifting signal.

Abstract: Methods and systems may provide for technology to detect an unbalanced degradation among a plurality of fuel cells in an automotive system and apply an unbalanced control across the plurality of fuel cells based on the unbalanced degradation. In one example, the unbalanced control balances the degradation among the plurality of fuel cells.

Abstract: A torque generating system is described, and includes a fuel cell power device, a high-voltage battery, an electric drive unit, and a controller. The fuel cell power device has a non-linear power-temperature relationship that has a local temperature maxima at a first electric power level and a local temperature minima at a second electric power level. A first operating point of the fuel cell power device is less than the first electric power level, and a second operating point of the fuel cell power device is set at a third electric power level that is greater than the first electric power level, wherein the third electric power level generates a fuel cell temperature that is less than the local temperature maxima. The fuel cell power device is controlled to one of the first operating point or the second operating point to transfer electric power to the electric drive unit.

Abstract: A method of controlling a hydrogen partial pressure can be carried out in a fuel cell system including a stack having a hydrogen electrode and an air electrode. The method includes: determining a point of time to purge the hydrogen electrode using a hydrogen concentration at an outlet of the hydrogen electrode or an accumulated amount of charge generated in the stack; and setting a target supply pressure of hydrogen supplied to the stack, in which the target hydrogen supply pressure is set in consideration of a hydrogen pressure and a partial pressure of nitrogen resulting from crossover in the stack.

Abstract: The present invention aims to provide a fuel battery system improved in reliability by accurately detecting when a fuel electrode gas or an air electrode gas has leaked. A fuel battery cell according to the present invention includes a first electrode, an electrolyte membrane, and a second electrode which are layered on a support substrate. Further, at least any one of the first electrode, the electrolyte membrane, and the second electrode is electrically isolated by an insulating member to form a first region and a second region. The insulating member is disposed at a position where the insulating member does not overlap with an opening portion of the support substrate (refer to FIG. 3).

Abstract: An electrochemical arrangement with two metallic separator plates which each define a plate plane and which are stacked in a stack direction perpendicular to the plate planes. The separator plates comprise sealing elements which are embossed into the separator plate and which are supported against one another for sealing the electrochemical cell which is arranged between the separator plates and which are reversibly deformable in the stack direction up to a distance z2. The arrangement further comprises at least one support element which is arranged between the separator plates and which is distanced to the sealing elements of the separator plates in a direction parallel to the plate planes.

Abstract: An electric power supply system of an embodiment includes a plurality of fuel cell systems having fuel cell stacks, a controller configured to control to perform stable output electric generation in one fuel cell system having one fuel cell stack, in which a degraded state of an electrode is relatively large, among the plurality of fuel cell stacks, and to perform transient response electric generation in other fuel cell system having other fuel cell stack, in which a degraded state of an electrode is relatively small, and a cell voltage sensor.

Abstract: The invention relates to a method for determining an operating state of an electrochemical system (1a; 1b; 1c; 1d; 1e), which has a cell stack (2) having at least one electrode portion (3, 4), at least one valve (5, 6, 20, 21) and at least one fluid line (23) being provided, the method comprising the following steps: conducting, in a varying manner, at least one fluid through the at least one valve (5, 6, 20, 21) via the at least one fluid line (23) with a predefined variation pattern, the variation pattern being applied to a fluid flow by means of the at least one valve (5, 6, 20, 21), determining a voltage response and/or a current response of the cell stack (2) during the varying conducting of the at least one fluid, and determining the operating state of the electrochemical system (1a; 1b; 1c; 1d; 1e) on the basis of the voltage response and/or the current response.

Abstract: A system is disclosed. The system can store a fuel reagent such as methanol for conversion into hydrogen to power one or more facility systems via a backup power system. A reactor controller can monitor a power demand of the one or more facility systems and determine whether the power demand is met by a primary power system. The fuel reagent can be provided to a fuel reactor in response to the reactor controller determining that the one or more facility systems are operating at a power deficit to generate an amount of hydrogen that, when provided to the backup power system, causes the backup power system to generate an amount of power that meets or exceeds the power deficit.

Abstract: The fuel cell control system includes: a reactor; an air compressor, wherein the air compressor has a compressing cavity, the compressing cavity has a gas inlet and a gas outlet, a rotatable pressure wheel is disposed inside the compressing cavity, and the gas outlet is in communication with the reactor; a control flow channel, wherein a first end of the control flow channel is in communication with the gas-intake side of the pressure wheel, a second end of the control flow channel is in communication with the wheel-back side of the pressure wheel, and the control flow channel is provided with a return valve for regulating the flow rate of the control flow channel; and a central control unit, wherein the central control unit is communicatively connected to the return valve to control the opening degree of the return valve.

Abstract: A control method for a fuel cell system includes: acquiring a poisoning rate of an electrode catalyst of a fuel cell; performing a potential maintaining operation of maintaining a potential of the fuel cell in a first potential range when the poisoning rate of the electrode catalyst is greater than a prescribed value ?; and performing a potential changing operation of repeating a cycle in which the potential of the fuel cell is changed between an upper-limit potential and a lower-limit potential of a second potential range which is higher than the first potential range after the potential maintaining operation has been performed.

Abstract: In a case where each of the temperature, the impedance, and the output current of a fuel cell stack falls within a predetermined range, the output voltage of the fuel cell stack is measured, and the measured output voltage is compared with a reference value to thereby determine the degree of degradation of the fuel cell stack.

Abstract: A fuel cell module is configured or operated, or both, such that after a shut down procedure a fuel cell stack is discharged and has its cathode electrodes at least partially blanketed with nitrogen during at least some periods of time. If the fuel cell module is restarted in this condition, electrochemical reactions are limited and do not quickly re-charge the fuel cell stack. To decrease start up time, air is moved into the cathode electrodes before the stack is re-charged. The air may be provided by a pump, fan or blower driven by a battery or by the flow or pressure of stored hydrogen. For example, an additional fan or an operating blower may be driven by a battery until the fuel cell stack is able to supply sufficient current to drive the operating blower for normal operation.

Abstract: A method for operating a fuel cell power generation system is presented and includes sequentially resting fuel cell modules corresponding to a designated reference module number, from among all fuel cell modules of the fuel cell power generation system, during a designated number of cycles while operating remaining fuel cell modules, gradually reducing a number of the fuel cell modules sequentially rested during the cycles from the reference module number, whenever average performance of the fuel cell modules is sequentially reduced by exceeding designated reference levels configured to be sequentially set, and repairing or replacing the fuel cell modules when the average performance of the fuel cell modules is reduced by a designated lower limit or more.

Abstract: A system and method for controlling operation of a fuel cell are provided. The method includes estimating an effective catalyst amount within a fuel cell stack and monitoring a change in the estimated effective catalyst amount according to time. An irreversible degradation state of the fuel cell stack is determined based on the monitored change in the estimated effective catalyst amount.

Abstract: A fuel cell system for a mobile body includes a fuel cell, an oxidant gas supply system, and a controller. The oxidant gas supply system includes an air compressor. The air compressor includes a rotor, an air bearing, and a housing. The controller includes a movement speed detector configured to measure a movement speed of the mobile body, and an acceleration detector configured to predict an acceleration to be applied to the mobile body. The controller is configured to determine whether the acceleration predicted by the acceleration detector is equal to or higher than a predetermined acceleration threshold, and control a rotation speed of the air compressor to be equal to or higher than a predetermined first rotation speed when determination is made that the acceleration predicted by the acceleration detector is equal to or higher than the acceleration threshold.

Abstract: A power management system for an air mobility vehicle includes a plurality of batteries configured to provide power to a propulsion unit of the air mobility vehicle to propel the air mobility vehicle, and a discharge control unit configured to monitor an operation state and a charge state of each battery, determine a discharge mode of each of the plurality of batteries according to the monitored operation state and the monitored charge state, and control whether each of the plurality of batteries is discharged or a discharge rate thereof according to the determined discharge mode.

Abstract: A method is provided for operating a fuel cell stack with improved performance recovery from sub-saturated conditions, the method comprising setting an alert for the performance recovery of the fuel cell stack, performing at least one oxidant starvation by supplying oxidant at a stoichiometric ratio below 1 to the fuel cell stack in at least one pulse for a preset amount of time and at low current while the fuel cell stack does not generate power. The fuel cell system with an improved performance recovery comprises a shorting circuit which is connected to the fuel cell stack at predetermined times (startup, shutdown or standby mode) and an air compressor powered by a DC-DC converter which supplies a predetermined number of oxidant pulses of a predetermined duration to the fuel cell stack.