Abstract: A power supply system includes a fuel cell, a first voltage converter that performs voltage conversion on an output voltage of the fuel cell, a power storage device, a second voltage converter connected in parallel to the first voltage converter with respect to a load to perform voltage conversion on an output voltage of the power storage device, and a controller. The controller performs control to cause the fuel cell to generate electric power less than electric power to be consumed by the load after the fuel cell has started up and before electric power is supplied to the load and to charge the power storage device with the electric power generated by the fuel cell, and then performs control to start supply of electric power from the power supply system to the load.

Abstract: A control device includes: a prediction unit configured to predict the harmonic current at each of prediction points comprised in a predetermined prediction target period after current time, based on control information of the motor in at least a next carrier cycle of the inverter, and a command value determination unit configured to output, to the active filter unit, a current command value for generating a compensation current having a polarity opposite to a polarity of a harmonic current at a prediction point, at a timing corresponding to the prediction point comprised in the next carrier cycle in the prediction target period, based on a prediction result of the prediction unit. Each of the prediction points is provided at a predetermined time interval since start time of the prediction target period. The time interval is longer as the next carrier cycle is longer.

Abstract: A power supply system includes one or more fuel cell outputs, each including a fuel cell and a voltage converter that converts an output voltage of the fuel cell, a voltage adjuster connected in parallel with the one or more fuel cell outputs to a load, the voltage adjuster including a diode and a regenerative DC power supply, and a control device that controls the one or more fuel cell outputs and the voltage adjuster, wherein the control device performs, after activating the fuel cell, limiting control through the voltage adjuster such that the voltage of each of the one or more fuel cell outputs becomes a target value and starts power supply from the one or more fuel cell outputs to the load when the voltage of each of the one or more fuel cell outputs reaches the target value.

Abstract: A power supply system controls a voltage converter of a fuel cell output unit that has started up first among a plurality of fuel cell output units so that an output voltage of the fuel cell of the fuel cell output unit or an output voltage of the voltage converter becomes a target voltage when the plurality of fuel cell output units are controlled. Further, the system controls the voltage converter of a fuel cell output unit that has started up after the fuel cell output unit that has started up first among the plurality of fuel cell output units so that an output current of the fuel cell of the fuel cell output unit or an output current of the fuel cell output unit becomes a target current.

Abstract: A power supply system includes a fuel cell, a first voltage converter that performs voltage conversion on an output voltage of the fuel cell, a power storage device, a second voltage converter connected in parallel to the first voltage converter with respect to a load to perform voltage conversion on an output voltage of the power storage device, and a controller. The controller performs control to cause the fuel cell to generate electric power less than electric power to be consumed by the load after the fuel cell has started up and before electric power is supplied to the load and to charge the power storage device with the electric power generated by the fuel cell, and then performs control to start supply of electric power from the power supply system to the load.

Abstract: An electrical power control system includes a first fuel cell system and a second fuel cell system, and a waste electricity unit connected in series with a switch unit. The waste electricity unit and the switch unit are connected in parallel with each of the fuel cell systems. At a time when at least one power supply system is started, a control unit selectively executes a charging control and a waste electricity control, based on at least one of temperature information and electrical storage information. The charging control suppresses a rise in voltage by supplying the electrical power of the power supply system to the power storage device. The waste electricity control suppresses a rise in voltage by supplying the electrical power of the power supply system to the waste electricity unit.

Abstract: A control device includes: a prediction unit configured to predict the harmonic current at each of prediction points comprised in a predetermined prediction target period after current time, based on control information of the motor in at least a next carrier cycle of the inverter, and a command value determination unit configured to output, to the active filter unit, a current command value for generating a compensation current having a polarity opposite to a polarity of a harmonic current at a prediction point, at a timing corresponding to the prediction point comprised in the next carrier cycle in the prediction target period, based on a prediction result of the prediction unit. Each of the prediction points is provided at a predetermined time interval since start time of the prediction target period. The time interval is longer as the next carrier cycle is longer.

Abstract: An electrical power control system includes a first fuel cell system and a second fuel cell system, and a waste electricity unit connected in series with a switch unit. The waste electricity unit and the switch unit are connected in parallel with each of the fuel cell systems. At a time when at least one power supply system is started, a control unit selectively executes a charging control and a waste electricity control, based on at least one of temperature information and electrical storage information. The charging control suppresses a rise in voltage by supplying the electrical power of the power supply system to the power storage device. The waste electricity control suppresses a rise in voltage by supplying the electrical power of the power supply system to the waste electricity unit.

Abstract: The invention provides methods and apparatus for substrate inspection and other lighting applications. It includes an lighting apparatus 10 which comprises: an illuminator 12 including a light source for emitting lights 14; supporting means for supporting an object (e.g. a patterned substrate) 18 having a finely patterned surface 16 on which predetermined patterns are formed, which is illuminated at a predetermined angle with the lights 14 from the illuminator 12; and determining means 24 for determining whether or not predetermined patterns on the surface of the object (substrate) 16 are deformed using lights 22 diffracted by the finely patterned surface 16, wherein the illuminator 12 applies two kinds of lights 14 each having a narrow wavelength range with a peak wavelength at a respective one of two complementary colors.

Abstract: The invention provides methods and apparatus for substrate inspection and other lighting applications. It includes an lighting apparatus 10 which comprises: an illuminator 12 including a light source for emitting lights 14; supporting means for supporting an object (e.g. a patterned substrate) 18 having a finely patterned surface 16 on which predetermined patterns are formed, which is illuminated at a predetermined angle with the lights 14 from the illuminator 12; and determining means 24 for determining whether or not predetermined patterns on the surface of the object (substrate) 16 are deformed using lights 22 diffracted by the finely patterned surface 16, wherein the illuminator 12 applies two kinds of lights 14 each having a narrow wavelength range with a peak wavelength at a respective one of two complementary colors.