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Chemistry: Electrical Current Producing Apparatus, Product, And Process > Fuel Cell, Subcombination Thereof Or Methods Of Operating > Automatic Control Means > Electrical Output Dependent Electrical Output DependentElectrical Output Dependent patent applications listed are from June 2005 to current and include Date, Patent Application Number, Patent Title, Patent Abstract summary and are linked to the corresponding patent application page.06/07/07 - 20070128483 - Power controlling apparatus for fuel cell system and method thereof A power controlling apparatus for a fuel cell system includes a fuel cell controller which analyzes power state information of a fuel cell system, transmits a power state information signal based on the analysis to a power conversion controller, receives a load request power information signal from the power conversion ... 05/24/07 - 20070116997 - Active isolation system for fuel cell A fuel cell system includes a fuel cell having conductive coolant flowing there through and a high voltage direct current (HVDC) bus interconnected with the fuel cell. An active isolation circuit includes coolant fault current sensors that detect a fault current (also called residual current) in the coolant and generates ... 05/17/07 - 20070111061 - Fuel cell and voltage supply method Disclosed herein are a fuel cell and a voltage supply method which are designed to supply power to various electric circuits in a stable manner. The fuel cell of stack structure with output terminals attached to different generating elements as mentioned above produces a potential across the output electrodes which ... 05/10/07 - 20070104985 - Feedback fuel cell device The present invention relates to a feedback fuel cell device consisting of: a fuel cell, a circuit mechanism and a logic processor. The fuel cell is electrically connected to the circuit mechanism that contains an electric power integration mechanism and circuit for detecting an open-circuit voltage. In the circuit mechanism, ... 05/03/07 - 20070099047 - Regulated fuel cell device ABSTRACT The present invention relates to a regulated fuel cell device comprising: a substrate, a DC regulating circuit, a packaging device and a heat sink. The substrate is made of a printed circuit board material, and provided with at least one membrane electrode assembly. The DC regulating circuit is disposed ... 04/26/07 - 20070092772 - Fuel cell system and polymer electrolyte fuel cell system A fuel cell system comprises an electrolyte membrane having an ion conductivity, a pair of electrodes contacting with the electrolyte membrane, and a separator having at least a passage for an oxidant gas, and a device for setting a cell voltage to substantially zero at the time of an stop ... 04/19/07 - 20070087237 - Cell voltage measurer for fuel cell stack and fuel cell system using the same A cell voltage measurer of a fuel cell stack and a fuel cell system using the same, the cell voltage measurer including a plurality of terminals electrically connected to a plurality of separators of the stack, respectively; and a plurality of wiring lines coupled to at least one of a ... 04/12/07 - 20070082244 - Control device for fuel cell system and related method A fuel cell system and a control device and a control method thereof capable of simply and accurately controlling concentration of fuel without using a fuel concentration sensor detecting concentration of fuel, includes a fuel cell system including: a fuel cell generating electric energy by electrochemically reacting a fuel mixture ... 04/05/07 - 20070077468 - Power supply apparatus with fuel cell and method of controlling the same A power supply apparatus has a fuel cell unit as a source of input power. A control device limits the output of the fuel cell unit within an operating range of up to a maximum power point, even if a load power is not lower than the maximum power of ... 04/05/07 - 20070077467 - Fuel cell system and method of correcting fuel cell current A fuel cell system in accordance with the present invention comprises a fuel cell connected to a load for supplying power thereto; a voltage regulating unit connected between the fuel cell and the load for controlling a voltage between the terminals of the load; a rectifier, which is connected to ... 03/29/07 - 20070072025 - Portable fuel cell apparatus The present invention relates to a portable fuel cell apparatus, comprising: a fuel cell, an interface controller, a voltage regulating circuit and a memory unit, wherein the voltage regulating circuit comprises a circuit for converting the electric power into a steady voltage output, and the interface controller comprises a data ... 03/29/07 - 20070072024 - Apparatus for controlling operations of fuel cell system and method thereof An apparatus for controlling operation of a fuel cell system, and a method thereof. The apparatus comprises a power generation amount controlling unit for generating a user's heat usage pattern and a user's power usage pattern and outputting a power generation amount controlling signal for controlling a power generation amount ... 03/08/07 - 20070054166 - Fuel cell system and method of controlling electrical energy discharged in the fuel cell system When a control device detects a request for stopping power generation of a fuel cell, electrical energy discharged from the fuel cell is supplied to an energy storage and other electrical devices such as an air compressor. At this time, electrical energy is supplied preferentially to the other electrical devices. ... 03/08/07 - 20070054165 - Energy output device and control method of energy output device In a power supply device including a fuel cell unit with a stack of fuel cells or a fuel cell stack and a secondary battery, an intermittent drive mode is selected under a preset condition to receive power supply only from the secondary battery. The control procedure of the invention ... 03/01/07 - 20070048570 - Fuel cell capable of load-dependent operation A fuel cell capable of load-dependent operation is constructed such that the amount of electric power required in the fuel cell, as well as the amount of electric power supplied from a utility power source, of the amount of electric power required in a load, is precisely calculated and the ... 02/22/07 - 20070042245 - Fuel cell unit, control method thereof, information processing apparatus, and power supply control method thereof A fuel cell unit according to the present invention is connectable to an external apparatus and includes a fuel cell generating an electric power, an auxiliary device feeding a fuel and air to the fuel cell, and a controller controlling power generation performed using the fuel cell. After receiving an ... 12/21/06 - 20060286420 - Fuel cell system configured to detect failure and process for dealing with failure of the system Disclosed is a fuel cell system which includes a fuel cell having an anode and a cathode and for producing electricity through reaction between the fuel gas and the oxidant gas, a fuel gas supply path through which the fuel gas passes, an oxidant gas supply path through which the ... 12/14/06 - 20060280977 - Fuel cell system A fuel cell system equipped with a fuel cell that generates electrical power in electrochemical reaction of hydrogen and oxygen. The system has the improved cold starting capability that increases heat energy generated in the fuel cell in order to rise the temperature of the fuel cell rapidly in a ... 11/16/06 - 20060257698 - Fuel cell system and electric vehicle including the fuel cell system In a fuel cell system in which load electric power is supplied from a fuel cell and a secondary battery, intermittent operation is performed, that is, operation of the fuel cell is stopped and the load electric power is supplied from the secondary battery in a low load region. At ... 11/09/06 - 20060251937 - Stop method for fuel cell system and fuel cell system A stop method for a fuel cell system including a fuel cell unit in which hydrogen is supplied to an anode, and air is supplied to a cathode so as to generate electrical power via an electrochemical reaction. The stop method includes the steps of stopping supply of hydrogen to ... 11/02/06 - 20060246331 - Partitioned fuel cell stacks and fuel cell systems including the same Partitioned fuel cell stacks having end plates between which two or more subassemblies of fluidly interconnected fuel cells are supported and selectively electrically isolated from each other. At least the fuel cells in each subassembly, and optionally all of the stack's fuel cells, are in fluid communication with each other. ... 10/12/06 - 20060228602 - Method and apparatus for inspecting direct liquid fuel cell generator, and direct liquid fuel cell generator The method is an inspecting method for a direct methanol fuel cell generator comprising an anode electrode including an node catalyst layer, a cathode electrode including a cathode catalyst layer, and N pieces of cells having an electrolyte disposed between the anode electrode and the cathode electrode, for power generation ... 10/05/06 - 20060222917 - Fuel cell system A fuel cell system according to the present invention has a movement drive device (load) (2), a fuel cell (10) for supplying electric power to the drive device, an electric power storing device (31) consuming electric power equivalent to the consumption power of the drive device, and an electronic control ... 10/05/06 - 20060222916 - Mehotd for determining a maximum power point voltage of a fuel cell, as well as fuel cell control system and power controller used in the fuel cell control system A detection voltage, which is obtained by dividing the voltage of a fuel cell 1 by resistors, is compared with a first reference voltage Vref1 by a differential amplifier. The differential voltage is input to a control section. The control section performs PWM control for the circuit section according to ... 09/28/06 - 20060216558 - Monitor connection of fuel cell stack A fuel cell stack is constructed by laminating together unit fuel cells (1) each comprising an anode separator (7) and a cathode separator (8) sandwiching an MEA (13). The cathode separator (8) comprises on the outer circumference thereof outward projections (28) and (29) to which two terminals (91) of a ... 09/21/06 - 20060210853 - Fuel cell system A fuel cell system (1) which includes: a fuel cell (2) to be supplied with a gas for power generation, the gas unused for the power generation to be discharged out of the fuel cell (2); a circulation flow path (8) through which the discharged gas is resupplied to the ... 09/21/06 - 20060210852 - Electrochemical preferential oxidation of carbon monoxide from reformate An electrochemical device comprises an electrochemical reactor that includes a single or multiple electrochemical cells and a galvanostat, a gas source and a fuel cell system. Each of the electrochemical cells includes an anode compartment and a cathode compartment. The gas source is in fluid communication with the anode or ... 09/21/06 - 20060210851 - Fuel cell power generating system with learning control A time zone when the operation pattern is obtained with a high learning convergence and a time zone when such an operation pattern cannot be obtained are set in advance. In the case where a significant difference develops between a target operation pattern and an actual load pattern, it is ... 09/14/06 - 20060204804 - Fuel cell system A fuel cell system includes a stack for generating electrical energy through electrochemical reaction between a fuel and oxygen and supplying the electrical energy to a load, a fuel supply unit for supplying the fuel to the stack, an oxygen supply unit for supplying the oxygen to the stack, and ... 08/24/06 - 20060188766 - Fuel cell system and method of controlling same A fuel cell system includes a fuel cell having a stack composed of stacked cells that generate electrical power from anode gas and cathode gas; a cell voltage measuring device connected to the cells to measure the voltages of the cells, the cell voltage measuring device outputting a first predetermined ... 08/24/06 - 20060188765 - Fuel cell system and method of shutting down the same The output of a fuel cell stack is kept consumed in an external load through a power converter having a constant-current operating function for keeping an output current of the fuel cell stack at a constant value, until an output voltage of the fuel cell stack reaches an operable lower ... 08/24/06 - 20060188764 - Fuel cell generation system A power generation system (200) of the present invention comprises a power generation portion (202) configured to generate power, a load power detecting means (205) configured to detect a load power supplied from a power source including the power generation portion to a load, an operation stop determination means (209) ... 07/06/06 - 20060147770 - Reduction of voltage loss caused by voltage cycling by use of a rechargeable electric storage device A fuel cell system that employs a fuel cell stack and a supplemental power source, such as a battery or an ultra-capacitor. The power source provides supplemental power in addition to the output power of a fuel cell stack for high load demands. The fuel cell system includes a power ... 07/06/06 - 20060147769 - Integration of an electrical diode within a fuel cell A fuel cell system that employs a diode electrically coupled between bipolar plates in a fuel cell of a fuel cell stack for preventing the fuel cell between the plates from reversing its polarity. The diode is a thin-sheet p-n diode including doped semiconductor layers and has a thickness relative ... 07/06/06 - 20060147768 - System for reformation of fuel for supply to a fuel cell on a motor vehicle and method for operation thereof The invention relates to a system (1) for the reformation of fuel for the supply of hydrogen to a fuel cell (2), in particular for a motor vehicle of the type comprising a reformer device (29), a hydrogen enrichment device (33, 34) for the reformate produced by the reformer and ... 06/29/06 - 20060141306 - Fuel cell system including a unit for electrical isolation of a fuel cell stack from a manifold assembly and method therefor A fuel cell system with improved electrical isolation having a fuel cell stack with a positive potential end and a negative potential, a manifold for use in coupling gases to and from a face of the fuel cell stack, an electrical isolating assembly for electrically isolating the manifold from the ... 06/29/06 - 20060141305 - Electric power generation control system and electric power generation control method for fuel cell A power generation control system for a fuel cell, which includes a rechargeable battery (5), and a controller (10) including: a unit (101) for computing a target power to be generated by a fuel cell (3); a unit (106) for detecting available power of the rechargeable battery (5); a unit ... 06/08/06 - 20060121325 - Energy-recovery method and device used on board a vehicle comprising a reformer fuel cell A method and device for recovering electrical energy in a motor vehicle driven by at least one electric motor. A fuel cell powers the electric motor, which is supplied with fuel by a reformer, the fuel flow being controlled according to power consumption of the electric motor, and which temporarily ... 06/01/06 - 20060115698 - Liquid fuel cell system and boosting unit of the same A liquid fuel cell unit which outputs a first voltage, a boosting circuit which boosts the first voltage output from the liquid fuel cell unit, and outputs a boosted second voltage to an electronic apparatus, and a first control circuit are included. The first control circuit compares the first voltage ... 05/11/06 - 20060099468 - Electronic device and electronic device operating control method The present invention relates to an electronic device and an electronic device operating control method in which the state of the fuel cell can be accurately determined. In cases where the voltage generated by the fuel cell 12 acquired from the voltage detection part 14 is greater than a specified ... 04/13/06 - 20060078773 - Method and system for controlling and recovering short duration bridge power to maximize backup power A system for providing back-up power to a load powered by a primary power source comprises: a fuel cell arrangement for generating back-up power for the load, a bridging power source for generating bridge power for the load, and a controller in operable communication with the fuel cell arrangement and ... 04/13/06 - 20060078772 - Power supply apparatus with fuel cell assembly A power supply apparatus includes a fuel cell assembly, a feeding device, a blower, a detecting circuit and a converting circuit. The fuel cell assembly performs an electrochemical reaction to generate an input voltage. The feeding device has therein a fluid fuel and in fluid connection with the fuel cell ... 03/16/06 - 20060057447 - Fuel cell system To provide a small-sized fuel cell system capable of providing a mode having a simple constitution preventing power generation of a fuel cell in an overload state, preventing a deterioration in the fuel cell system and providing a stable output from the fuel cell in the fuel cell system constituting ... 03/09/06 - 20060051634 - Power controller for fuel cell A fuel cell power system includes a fuel cell stack having at least two fuel cell groups in series with each other and with each fuel cell group having more than one individual fuel cell, and a power controller which receives electrical power from the fuel cell stack and distributes ... 03/09/06 - 20060051633 - Fuel cell system A fuel cell system of the present invention comprises a fuel cell (13), a load value detecting means (16) configured to detect a load value of a load of electric power or heat which is generated by equipment (14) supplied with the electric power or the heat from the fuel ... 03/02/06 - 20060046116 - Series type air supply system for fuel cell-powered vehicles A series type air supply system for fuel cell-powered vehicles wherein a low speed air supplier and a high speed air supplier are connected in a series for performance of a multi-staged pressurization to variably operate the air suppliers of high efficiency according to an output value of a fuel ... 02/09/06 - 20060029847 - Operation control of a fuel cell system For a fuel cell system, the flow rate and the pressure of the air flow supplied to the cathode side are controlled with the following procedure. First, air is supplied to the cathode at the flow rate and supply pressure required for generating electricity. In this state, the changing rate ... 02/09/06 - 20060029846 - Fuel cell system A fuel cell system according to the invention comprises a fuel cell stack, a fuel feeder that supplies the fuel cell stack with fuel, a rechargeable battery that is an electric storage device, a bidirectional DC/DC converter that selectively performs an operation of converting the output voltage of the rechargeable ... 02/09/06 - 20060029845 - Fuel cell system A fuel cell system of the invention is built as a system in which a fuel cell stack and an electric storage device are provided in parallel, and includes, in addition to the fuel cell stack and the electric storage device, a fuel feeder and a DC/DC converter. The fuel ... 02/09/06 - 20060029844 - Fuel cell optimum operation point tracking system in power supply device using fuel cell and power supply device provided with this fuel cell optimum operation point tracking system The present invention provides a fuel cell optimum operating point tracking system capable of ensuring optimum operation of a fuel cell, by detecting the optimum operation voltage of the fuel cell taking not only temperature dependence of the output characteristics thereof, but also chemical reactions into consideration. The fuel cell ... 01/19/06 - 20060014063 - Fuel cell system A fuel cell system which includes: a fuel cell fed with a reaction gas for generating power; an output detection unit which detects output current and voltage of the fuel cell; a storage unit which stores a standard current-voltage characteristic of the fuel cell, from which a standard voltage of ... 01/05/06 - 20060003205 - Fuel cell system, mobile unit equipped with the system, and control method for the fuel cell system A fuel cell system FC replenishes a fuel cell stack with air or hydrogen by temporarily driving a compressor 41 or a low-pressure valve 24 even during an intermittent operation mode. If air is supplied for replenishment, the amount of air remaining in an air supply system is kept substantially ... 12/29/05 - 20050287405 - Fuel cell system An adaptable fuel cell system is provided that includes a stack generating electric energy through an electrochemical reaction between hydrogen and oxygen and applying the electric energy to a load, a reformer reforming a fuel to generate the hydrogen supplied to the stack, a fuel supply unit supplying the fuel ... 12/01/05 - 20050266283 - Fuel cell system shunt regulator method and apparatus A fuel cell system for powering a work load includes a fuel cell stack and a shunt regulator having a threshold detection; transistorized power switching element, and a dump load. The threshold detection element identifies when an abnormally high voltage rises. The power switching element routes power from the high ... 11/24/05 - 20050260471 - Electrical current measurement in a fuel cell A plurality of electrical current sensors for a set of fuel cell stacks in series independently measure electrical current in a fuel cell, and an acceptability status is determined for each electrical current sensor by independent comparison of each sensor measurement to the individual values of the other sensor measurements. ... 11/17/05 - 20050255354 - Fuel cell power generation system A fuel cell power generation system comprises plural fuel cells executing power generating operations by use of oxidants and fuel, plural hot water storage tanks in which heat energies generated upon the power generating operations of the fuel cells is stored as hot water, a power supplying portion supplying electric ... 11/03/05 - 20050244688 - Power generation control system for fuel cell A power generation control system which includes: a fuel cell (201); a target power provider (101) for the fuel cell (201); a operation status monitoring system (102) for monitoring output power from the fuel cell (201), in which the detected output power includes actual output voltage (AV) of the fuel ... 10/20/05 - 20050233192 - Fuel cell system having secondary cell This invention provides a power supply system for supplying electrical power to a load. The system includes: a first and a second power supply wirings for a connection to the load; a fuel cell system having a fuel cell connected between the first and second power supply wiring; a secondary ... 09/29/05 - 20050214607 - Polymer electrolyte fuel cell power generation system and stationary co-generation system using the same While a fuel cell is refreshed without interrupting a power generation by the fuel cell, a polymer electrolyte membrane fuel cell power generation system capable of maintaining performance of the fuel cell under stable condition for a long time period is provided. In the polymer electrolyte membrane fuel cell power ... 09/29/05 - 20050214606 - Power system for fuel cell, electronic equipment and electric power feeding method As disclosed, there is provided a small-size power system for fuel cell allowing efficient extraction of electric power-output from a fuel cell and a secondary cell, electronic equipment, and an electric power feeding method. The power system for fuel cell has a voltage conversion circuit and a rectification circuit, and ... 09/08/05 - 20050196655 - Fuel cell system and method of controlling same A fuel cell system has a fuel cell, a fuel supply device, a gas discharge valve, a voltage detecting device and a control device. The fuel supply device supplies a fuel gas to the fuel cell. The gas discharge valve discharges the fuel gas into an external environment. The voltage ... 08/25/05 - 20050186456 - Integrated cell voltage monitoring module An integrated cell voltage unit for monitoring the voltage of each fuel cell in a fuel cell stack that is easily and reliably electrically coupled to the bipolar plates of the fuel cell stack. The bipolar plates of the fuel cell stack are equipped with a specialized tab connector that ... 07/14/05 - 20050153182 - Fuel cell power generation system A stable and high reliability fuel cell electricity-generating device capable of generating electricity even in the case of sudden drop of load power. A fuel cell generating electric power from a fuel and an oxidizer, a fuel processor producing fuel to be supplied into the fuel cell from an electricity-generating ... 06/30/05 - 20050142407 - Start up cascaded fuel cell stack A cascaded fuel cell stack (9a) includes a plurality of groups (10-12) of fuel cells (13) connected electrically in series by means of conductive separator plates (58, 59) and current collecting pressure plates (56, 57). Each group has an inlet fuel distributing fuel inlet manifold (17a, 19c, 20c), a fuel ... 06/02/05 - 20050118472 - Power management system for hybrid fuel cell and battery driven electric vehicles A power management system includes a fuel cell based primary power supply and a rechargeable cell based secondary power supply and a charging control circuit arranged between the two power supplies. A controller applies a charging control signal to the charging control circuit for controlling the magnitude of a charging ... ### FreshPatents.com Support |