摘要:
Provided is a wind power generation apparatus to which general purpose inverters are applicable. An inverter in a constant-voltage mode is used. While a wind power generator is generating electricity, switching circuits are turned on and off at a controlled duty cycles to intermittently short-circuit an armature winding, boosting the voltage and controlling the rotational speed of a windmill rotating blade, with the result that the voltage applied to the inverter is made constant. At the activation, in order to prevent an excessive voltage from being generated while an inverter is changing from the stand-by state to the activated state, ON/OFF control of a switching circuit is performed to switch between the output voltage of a rectifier and the voltage generated at a resistor, with the result that the voltage is controlled and maintained at an appropriate value.
摘要:
A wind power generation control device which controls a wind power generator using a wind turbine blade having a fixed pitch angle is provided. The wind power generation control device which controls the wind power generator in which an output current value outputted by the wind power generator is detected, an output voltage value outputted by the wind power generator is detected, a rotational speed of the wind turbine blade is detected, and on the basis of the detected output current value at the current time, the detected output voltage value at the current time, and the detected rotational speed at the current time, output power at the rotational speed at the current time is calculated, and on the basis of the calculated output power and blade aerodynamic properties, which are properties inherent to the wind turbine blade, the wind power generator is controlled so that an optimal amount of power corresponding to the wind speed can be efficiently obtained in a relatively low wind speed region and a wind power generation control method for controlling the wind power generator are provided.
摘要:
Provided is a wind power generation apparatus to which general purpose inverters are applicable. An inverter in a constant-voltage mode is used. While a wind power generator is generating electricity, switching circuits are turned on and off at a controlled duty cycles to intermittently short-circuit an armature winding, boosting the voltage and controlling the rotational speed of a windmill rotating blade, with the result that the voltage applied to the inverter is made constant. At the activation, in order to prevent an excessive voltage from being generated while an inverter is changing from the stand-by state to the activated state, ON/OFF control of a switching circuit is performed to switch between the output voltage of a rectifier and the voltage generated at a resistor, with the result that the voltage is controlled and maintained at an appropriate value.
摘要:
A radiation imaging apparatus includes: a radiation detection unit in which a plurality of photoelectric conversion units to convert radiation signals into charge signals and store the charge signals is located; a storage control unit configured to control the storage of the charge signals executed by the plurality of photoelectric conversion units; a reading control unit configured to control reading of the charge signals stored by the plurality of photoelectric conversion units; and a control unit configured to fix an indefinite potential generated at the radiation detection unit while at least one of the storage control of the charge signals by the storage control unit and the reading control of the charge signals by the reading control unit is not carried out.
摘要:
A radiation imaging apparatus includes an imaging unit and an imaging control unit. The imaging control unit causes a switch unit, an accumulation unit, a removal unit, a holding unit, and an addition unit, which constitute a pixel circuit of the imaging unit, to operate at a timing before an imaging operation by the imaging unit so as to fix unstable voltages of the accumulation unit, the removal unit, the holding unit, and the addition unit to a predetermined voltage of a power supply connected via a switch unit.
摘要:
The present invention provides a glass preform heating furnace in which the occurrence of arching is suppressed. The glass preform heating furnace is equipped with a susceptor (3); a slit heater (4); an insulator; and a furnace body, wherein, in the case that the space between the slit heater (4) and the susceptor or between the slit heater (4) and the conductive member closest to the slit heater is D, that the maximum value of the electric field in this space is E1, that the number of the slits in the slit heater is N, that the slit width of the slit heater is S, and that the maximum value of the electric field in the slit space is E2, the values of D, N and S are set so that E1≧E2 is established.
摘要:
According to an embodiment, a semiconductor package includes a semiconductor chip mounted on an interposer board, a encapsulant sealing the semiconductor chip, and a conductive shielding layer covering the encapsulant and at least part of a side surface of the interposer board. The interposer board has plural vias through an insulating substrate. A part of the plural vias has a cutting plane exposing to the side surface of the interposer board and cut in a thickness direction of the interposer board. The cutting plane of the via is electrically connected to the conductive shielding layer.
摘要:
A distribution management device, a distribution management method, a program storage medium and a distribution management system are disclosed. The client order data of the merchandise 4 of the sales channel utilized the internet 3 and the store order data of the merchandise 4 for the quantity sold of the sales channels excluding the Internet 3 are received by the sales managing server 20 via the internet 3. The stock of merchandise 4 is controlled by the settlement/delivery instructing server 21 based on the client and store order data. The actual sales condition of merchandise in each sales channel is grasped by the shipment control server 55 based on the storage data and the delivery condition data obtained from the client and store order data and the storage data and delivery condition data obtained from the settlement/delivery instructing server 21, and the supply of merchandise 4 to the manufacturing factory will be instructed based on the actual sales condition. Thus, the distribution stocks to each of sales channels can be one-dimensionally controlled and can be efficiently distributed in the market based on the actual sales information. And thereby, the stocks can be constantly and certainly secured to various sales channels.
摘要:
A semiconductor memory device formed on a semiconductor chip includes first memory arrays, a plurality of second memory arrays, a first voltage generator, and first bonding pads. The semiconductor chip is divided into first, second and third rectangle regions and the third rectangle region is arranged between the first rectangle region and the second rectangle region. The first memory arrays are formed in the first rectangle region. The second memory arrays are formed in the second rectangle region. The voltage generator and first bonding pads are arranged in the third rectangle region. The first bonding pads are arranged between the first rectangle region and the voltage generator and no bonding pads are arranged between the voltage generator and the second memory arrays.
摘要:
A semiconductor memory device formed on a semiconductor chip includes first memory arrays, a plurality of second memory arrays, a first voltage generator, and first bonding pads. The semiconductor chip is divided into first, second and third rectangle regions and the third rectangle region is arranged between the first rectangle region and the second rectangle region. The first memory arrays are formed in the first rectangle region. The second memory arrays are formed in the second rectangle region. The voltage generator and first bonding pads are arranged in the third rectangle region. The first bonding pads are arranged between the first rectangle region and the voltage generator and no bonding pads are arranged between the voltage generator and the second memory arrays.