摘要:
In an uninterruptible power supply system, control sections of three uninterruptible power supply units are connected to one another by communication cables to configure one integrated control unit. The integrated control unit brings three switches into conduction if a bias feeding mode is selected by one arbitrary operation section and brings three switches into conduction if an inverter feeding mode is selected. Therefore, there is no need to separately provide an operation section and a control section for operating and controlling all of the uninterruptible power supply units.
摘要:
A power conversion apparatus includes an inverter for converting DC power to AC power for supply to a load, a converter for converting AC power from an AC power supply to DC power for supply to the inverter, a DC voltage converter for converting a voltage value of power stored in a storage battery to supply DC power from the storage battery to the inverter when power supply from the AC power supply is faulty, and a filter including a reactor and a capacitor, for removing harmonics generated by the inverter. The inverter includes a three-level circuit which is a multi-level circuit.
摘要:
A reactor includes an annular iron core and four coils separately wound around the iron core. The four coils have first electrodes connected to output terminals of four choppers, respectively, and second electrodes each connected to a load. Therefore, the four choppers can be connected in parallel to the load by one reactor.
摘要:
In a non-aqueous electrolyte secondary battery 1 including a positive electrode 11, a negative electrode 12, a separator 14, a positive electrode lead 15, a negative electrode lead 16, a gasket 17, and a housing case 18, the negative electrode 12 including a negative electrode active material layer 12b including an alloy-formable active material, a resin layer 13 is formed on the surface of the negative electrode active material layer 12b. The resin layer 13 includes a resin component with lithium ion conductivity and an additive for non-aqueous electrolyte. This configuration enables the battery performance to be maintained at a high level and the battery swelling to be suppressed, even when the number of charge/discharge cycles is increased, providing the non-aqueous electrolyte secondary battery 1 with a high level of safety.
摘要:
In an uninterruptible power supply apparatus, a common mode current flowing from nodes (N1 to N3) to a line of a ground voltage (GND) through a stray capacitance (41) of a battery (40) is limited by a common mode reactor (34), and the low-level common mode current passing through the common mode reactor (34) is caused to flow to a virtual neutral line (NL) through a common mode capacitor (37). Therefore, the level of noise caused by the common mode current can be reduced.
摘要:
Provided are a negative electrode 1 for a non-aqueous electrolyte secondary battery and a non-aqueous electrolyte secondary battery including the negative electrode 1 for a non-aqueous electrolyte secondary battery, the negative electrode 1 including: a negative electrode current collector 10; and a plurality of columns 13 of alloy-formable active material being capable of absorbing and desorbing lithium ions and being supported on the surface of the negative electrode current collector 10 so as to extend outward; a polymer layer 15 including a lithium-ion permeable resin and being formed on the outer surface of each column 13 of alloy-formable active material, the polymer layer 15 having a thickness capable of leaving gaps 17 between the columns 13 of alloy-formable active material adjacent to each other unfilled.
摘要:
To detect a position an object is brought into contact or brought into proximity of the contact regions arranged with a capacitance sensor at high precision by successive values with a small number of capacitance sensors. An intensity acquiring unit acquires intensities of change in capacitance detected by capacitance sensors as detection results of when annularly arranged with respect to a first quadrant to a fourth quadrant. A horizontal calculation unit calculates a detection position in a horizontal direction of a position an object is brought into contact or brought into proximity. A vertical direction calculation unit calculates a detection position in a vertical direction of a position an object is brought into contact or brought into proximity. A position output unit outputs positions in the horizontal direction and the vertical direction of the position the object is brought into contact or brought into proximity.
摘要:
An input device, which is small-sized and inexpensive in spite of being simple in construction and thin, comprises at least one primary electrode and a plurality of secondary electrodes, both electrodes being formed in the same plane. A position of a dielectric is identified on the basis of differences in electrostatic capacity between the primary electrode and the secondary electrodes, which electrostatic capacity is changed by the dielectric positioned on a surface side of the both electrodes.
摘要:
Whether a human body is touching or not is detected highly accurately at high speed. Switch SW1 is turned on to charge condenser Ca by power supply Vcc. The switch SW1 is turned off to transfer the electric charge charged in the condenser Ca to condensers Cs and Cx. The switches SW2 and SW3 are repeatedly turned on and off for a predetermined short time, and thus the electric charge charged in the condenser Ca is slowly discharged through resistor R. The unknown charging voltage Vx of the condenser Cx is compared with the reference voltage Vref by comparator Comp, and the unknown capacitance of the condenser Cx is computed based on the number of times to count turning on and off until it is smaller than the reference voltage Vref. When the computed unknown capacitance of the condenser Cx is the value near the capacitance of a human body, it is determined that a human body is touching. The invention can be applied to a touch sensor.
摘要:
A warning system for a vehicle obtains image data by three-dimensionally recognizing a road extending ahead of the vehicle and traffic conditions, decides that driver's wakefulness is on a high level when there is any one of psychological stimuli to the driver or that driver's wakefulness is on a low level when there is not psychological stimulus to the driver, estimates the possibilities of collision and off-lane travel, and gives the driver a warning against collision or off-lane travel when there is the high possibility of collision or off-lane travel. Another warning system for a vehicle obtains image data by three-dimensionally recognizing a road extending ahead of the vehicle and traffic conditions, discriminates between automobile roads and open roads on the basis of the image data and a traveling mode in which the vehicle is traveling, determines patterns of driving operations and traveling motions in a given time at the initial stage of travel on the road when the road is identified to be an automobile road, repeats the determination of patterns at given time intervals, detects dozed driving through the comparison of a reference value and a measured value and gives the driver a warning against dozing when the driver's wakefulness declines.