摘要:
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 limit voltage value of the power converter after stopping the supply of oxidant-containing gas to a cathode while maintaining the supply of hydrogen-containing gas to an anode. When the output voltage of the fuel cell stack falls below the operable lower limit voltage value, the output of the fuel cell stack is connected to a short-circuit resistor. Thereafter, a reformer is stopped when the output voltage of the fuel cell stack reaches approximately zero.
摘要:
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 limit voltage value of the power converter after stopping the supply of oxidant-containing gas to a cathode while maintaining the supply of hydrogen-containing gas to an anode. When the output voltage of the fuel cell stack falls below the operable lower limit voltage value, the output of the fuel cell stack is connected to a short-circuit resistor. Thereafter, a reformer is stopped when the output voltage of the fuel cell stack reaches approximately zero.
摘要:
A fuel cell power generating apparatus includes a fuel cell that generates electric power by an electrochemical reaction between a fuel gas and an oxidizer gas; a fuel gas generating section connected to the fuel cell and generating the fuel gas; a raw fuel supply line that supplies a raw fuel to the fuel gas generating section; opening/closing sections that discharge a liquid raw material that is part of the raw fuel to the raw fuel supply line; a pressure section that feeds the liquid raw material to the opening/closing sections; and a control section controlling the opening/closing sections by sequentially transmitting pulse-like open signals at shifted times to respective opening/closing sections.
摘要:
A conveying operation method and device that can continue an operation on a workpiece to prevent reduction in production efficiency in conveying a workpiece and performing an operation on the workpiece even if conveyance of the workpiece is stopped during the operation on the workpiece. The workpiece is conveyed by a workpiece conveying device, a movable stand is moved in synchronization with the workpiece conveying device in operation areas along a conveying path, and an operation is performed on the workpiece by an operation device provided on the movable stand. When movement of the workpiece conveying device is stopped, the movable stand stops in synchronization with the workpiece conveying device to continue the operation on the workpiece and complete one cycle operation. When non-normal operation is performed on the workpiece, the workpiece is retracted to a position different from the conveying path while being supported by the movable stand.
摘要:
Provided is a work assembling system (1) comprising a manpower working area (30A) for transferring bodies (10) continuously, a robot working area (40) disposed on the downstream of the manpower working area (30A) for tact-transferring the bodies (10), and a first buffer space (50A) disposed at a boundary portion between the manpower working area (30A) and the robot working area (40).
摘要:
A device for mounting a vehicle instrumental panel has an assist machine and work robots. The assist machine has instrument panel holding means for holding an instrument panel, conveys the instrument panel, and has an assist function for holding the weight of the instrument panel. The work robots have connection means removably connected to the instrument panel holding means and operate the instrument panel holding means to place the instrument panel in a vehicle interior.
摘要:
Voltage compensating circuits are connected serially to a power system, including capacitors each having different charging voltages (in relationship of approximately 2k (K=0, 1, 2, . . . ) times the smallest charging voltage value). The voltage compensating circuits convert DC voltages in the capacitors into AC voltages and output the AC voltages, respectively. The voltages of the capacitors are detected as detected values V1 to V3. The detected values V1 to V3 are used as bit signals for a reference value to check a voltage dip amount of the power system with the reference value and to convert the voltage dip amount into a binary signal. A combination is selected from the voltage compensating circuits in accordance with the binary signal so that the sum of output voltages of the selected voltage compensating circuits compensates the voltage dip of the power system.
摘要:
In a circuit breaker of double break type, a first moving contact arm and a second moving contact arm are pivoted on a common pin shaft in a manner to move mechanically independent from each other and are electrically connected at the parts near the pivoted ends by a flexible conductor, such as a braided wires, and thereby stable and reliable contacts of the moving contacts on the stationary contacts are assured.
摘要:
A circuit interrupter comprising a stationary conductor carrying a stationary contact, a movable contact arm carrying thereon a movable contact which, when in the open position, defines an arcing region together with the stationary contact, an operating mechanism for moving the movable contact arm between contact closed and open positions, an arc extinguisher facing toward the arcing region for cooling and extinguishing the electric arc, an arc horn for transferring thereon one leg of the electric arc, and an arc runner mounted on the stationary conductor for transferring thereon the other leg of the electric arc from the stationary contact. The arc runner has formed therein an arc runner slot which opens to substantially surround the arcing region, and the arc runner and the stationary contact are positioned such that at least one of the movable contact and the arc horn of the movable contact arm is located within the arc runner slot of the arc runner when the contacts are in the closed position.
摘要:
Provided is a work measuring method by which a deviation quantity of a work measuring point from a reference position can be measured in a short time. A work surface is set as a reference point when the measuring point is positioned at the reference position, and a distance from a photographing device to a reference surface is set as a reference distance. A deviation quantity of the measurement point in a direction intersecting a photographing direction on the reference surface is measured by the photographing device, and a deviation quantity of the measuring point in the photographing direction is measured by a laser distance sensor. Then, based on the deviation quantity measured by the photographing device, the deviation quantity measured by the laser distance sensor, and the reference distance, a deviation quantity of the measuring point in a direction intersecting the photographing direction is calculated.