摘要:
A control system for a power conversion system composed of a plurality of power converters, each of which is connected between one of a plurality of AC power systems and a DC line to exchange an electric power between them, respectively. The control system is composed of a plurality of control units, each of which includes units for detecting an AC current flowing between the AC power system and the power converter, an AC voltage of the AC power system, and a DC voltage of the power converter, and a unit for detecting an active power and a reactive power exchanged between the power converter and the AC power system. Each of the control units further includes an active power control unit for generating an active current command so that the DC voltage drops with the increase of one of the active power and a DC current, a unit for setting a reactive power reference, a reactive power control unit for comparing the reactive power reference and the reactive power to obtain a reactive power difference and for generating a reactive current command so as to bring the reactive power difference close to zero, a current control unit for generating a plurality of output voltage commands so as to coincide the AC current to the active and reactive current commands, and a gate control unit for switching the semiconductor switching devices in the power converter based on the output voltage commands.
摘要:
A power conversion system including a plurality of converter transformers. AC side windings of the converter transformers are connected in series for connecting to an AC power system. The power conversion system further includes a plurality of series connected voltage source type self-commutated converters for converting AC power into DC power or DC power into AC power. Each of the voltage source type self-commutated converters is connected to one of DC side windings of the converter transformers, respectively. The power conversion system further includes a plurality of DC voltage sources. Each of DC output sides of the voltage source type self-commutated converters is connected to one of the DC voltage sources, respectively. The power conversion system further includes a control system for controlling the voltage source type self-commutated converters such that each of DC voltages of the voltage source type self-commutated converters follows to one of DC voltage reference values for the voltage source type self-commutated converters, respectively.
摘要:
A replicated controller and a fault recovery method therefor which can restore a faulty system to a normal state without interrupting operation of an equipment, even in an equipment controller performing processing with short operating periods.In a fault recovery method for a replicated controller, control data is divided into a plurality of blocks on the basis of dependency of the blocks, and a plurality of blocks are transferred in a sequential order of superiority of the dependency from the normally operating system to the faulty system in a period over a plurality of operating periods. BY this, even in an equipment controller performing processing at a short operating period, the system, in which failure is caused, can be restored into normal state without interrupting operation of the equipment.
摘要:
In an embodiment, a transcription support system includes: a first storage, a playback unit, a second storage, a text generating unit, an estimating unit, and a setting unit. The first storage stores the voice data therein; a playback unit plays back the voice data; and a second storage stores voice indices, each of which associates a character string obtained from a voice recognition process with voice positional information, for which the voice positional information is indicative of a temporal position in the voice data and corresponds to the character string. The text creating unit creates text; the estimating unit estimates already-transcribed voice positional information based on the voice indices; and the setting unit sets a playback starting position that indicates a position at which playback is started in the voice data based on the already-transcribed voice positional information.
摘要:
According to one embodiment, a speaker clustering apparatus includes a clustering unit, an extraction unit, and an error detection unit. The clustering unit is configured to extract acoustic features for speakers from an acoustic signal, and to cluster utterances included in the acoustic signal into the speakers by using the acoustic features. The extraction unit is configured to acquire character strings representing contents of the utterances, and to extract linguistic features of the speakers by using the character strings. The error detection unit is configured to decide that, when one of the character strings does not fit with a linguistic feature of a speaker into which an utterance of the one is clustered, the utterance is erroneously clustered by the clustering unit.
摘要:
In order to provide an LED light emitting device that can easily control a color temperature of white light, the LED light emitting device is provided with a plurality of types of light emitting parts that: respectively have LED elements that emit ultraviolet radiation or violet color visible light, and phosphors that absorb the ultraviolet radiation or violet color visible light to emit colored light; and emit the colored light, wherein: the colored light emitted by the plurality of types of light emitting parts become white light when all mixed with each other; the LED elements of the plurality of types of light emitting parts are all the same ones, and mounted on a single base material; and two or more light emitting parts overlap with each other in their parts.
摘要:
A board-to-board connector comprising a first connector and a second connector is disclosed. The first connector has a first housing mounted on first terminals. The second connector is configured to be engaged, by fitting, with the first connector. The second connector has a second housing mounted on second terminals, which are configured to make contact with the first terminals. At least a part of an entrance end portion a concave guide portion is provided with a sloped guide surface formed therein. Due to the insertion of a second fitting guide portion into a concave guide portion, in such a manner that portions of the second fitting guide portion are brought into abutting contact with the sloped guide surface, the first and second terminals are spaced apart from each other in a state where fitting faces of the first and second housings are even with each other.
摘要:
A reclosable packaging bag comprises a main bag body having an opening portion and at least one heat-sealed portion; and a linear fastener provided on the opening portion of the main bag body. The linear fastener is provided along the opening portion of the main bag body by an insert injection molding so as not to extend to the heat-sealed portions. A method for manufacturing the bag comprises the three steps. First, the first and second linear fastening members are formed on a prescribed position of a sheet of film material by an insert injection molding so as to be spaced from each other. These fastening members are engageable with each other to form a linear fastener. Second, the sheet of film material is folded in two so that the fastening members can engage with each other. Third, each of opposite portions of the sheet of film material thus folded is heat-sealed to form side heat-sealed portions.
摘要:
Machine translation system includes storage unit configured to store interpretation data items each including first expression element representing first expression of first language, word set element including first expression, and second expression element representing second expression of second language, first expression being to be translated into second expression, first expression and second expression belonging to category, acquiring unit configured to acquire predetermined expression of first language, predetermined expression being contained in to-be-translated text having structure, detecting unit configured to detect, from interpretation data items, interpretation data items each including expression element representing predetermined expression, selection unit configured to select, from detected interpretation data items, interpretation data item including word set element corresponding to same attribute or equivalent positional relationship in structure, and translation unit configured to translate predetermined expression into second language, using selected interpretation data item.
摘要:
An initial value of read address is set in a first initial address register; an initial value of write address is set in a second initial address register; and the number of data to be accumulated by an accumulator and the frequency of repetition of accumulation are set in an accumulator count register. A controller controls the timing of output of an initial read address from a first memory controller, the timing of initialization by an initializer, and the timing of output of an initial write address from a second memory controller. Reading of data, accumulation and writing of data proceed in parallel in each cycle of accumulation.