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JP3247328B2 |
To reduce the magnitude of self oscillation of a power supply portion with a load portion unattached, with simple circuitry. A power supply portion 10 is provided with a secondary coil Nf2 for signal transmission which is not coupled wit...
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JP2001354053A |
To cope with an increase of a DC voltage during a regenerative operation, and restrain higher harmonics.reactive power to be generated in a rectifier.This system has the rectifier 13 comprising a diode, a self- exciting converter 14 comp...
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JP3240721B2 |
PURPOSE: To reduce the switching loss and the heat generation at the limited operation of a power regenerative device, and lighten the device, and cut down the cost. CONSTITUTION: This relates to a power regenerator which has a converter...
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JP2001526517A |
Apparatus for providing effective amounts of high-frequency AC power to a long primary trackway (1102), used for inductive power transfer includes transconductance-pi filters (1105) for deliberate mismatching; resulting in independence o...
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JP3238721B2 |
A power conversion scheme employing a group of parallel connected, individually controlled converter circuits each providing output currents employs a scheme of distributed notches in the output currents to facilitate connection between ...
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JP2001339959A |
To solve a problem that high harmonic components of orders of multiples of 3 appear in output voltage when output voltage of a power converter 3 is unbalanced in each phase, although the high harmonic components are cancelled in the line...
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JP2001523938A |
Secondary resonant pickup coils (102) used in loosely coupled inductive power transfer systems, with resonating capacitors (902) have high Q and could support large circulating currents which may destroy components. A current limit or "s...
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JP2001516558A |
PCT No. PCT/SE98/00502 Sec. 371 Date Sep. 20, 1999 Sec. 102(e) Date Sep. 20, 1999 PCT Filed Mar. 20, 1998 PCT Pub. No. WO98/43336 PCT Pub. Date Oct. 1, 1998A plant for transmitting electric power comprises at least one VSC-converter (1)....
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JP2001224183A |
To provide a link inverter having DC power limiting function which can continue power delivery, without generating overcharge and overdischarge in a DC source, by adjusting effective power which an inverter delivers to AC system, in orde...
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JP2001161030A |
To reduce the size and cost of a battery power storage system which injects the electric power from a secondary battery into the DC bus of a DC power distribution system.In a battery power storage system which injects the electric power ...
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JP3152725B2 |
PURPOSE: To provide a controller common to converters for multiple systems being operated asynchronously in which identical operation results are outputted constantly for external control signals. CONSTITUTION: The controller for AC/DC c...
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JP3137341B2 |
A plug connection for a hazardous location for energy and data transmission by means of electrical quantities in a bus system has a primary part and a secondary part constructed as transmitters, as well as limiting means for the electric...
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JP2001045769A |
To start and operate a capacitor commutation type converter stably even in a DC transmission system including a system having no power source. The controller for capacitor commutation type converter comprises a control means 201 for dete...
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JP3130641B2 |
PURPOSE: To reduce an occupied area of a charging capacitor in the case of circuit integration and to eliminate reaction of amplitude modulation. CONSTITUTION: At least one output terminals 10, 12; 9, 11 of rectifier units 2, 3 connectin...
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JP2001016702A |
To provide a device suited to three-dimensional run of a movable body and capable of attaining size reduction, and large power receiving capacity by having a coil wound around a pickup core and forming a pair of plate parts made of a mag...
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JP2000517152A |
The invention concerns a power back comprising a connection to a power supply network conveying alternating voltage with at least one transformer, a downstream rectifier circuit to which a consumer can be connected, and with an electroni...
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JP3105260B2 |
PCT No. PCT/EP95/05082 Sec. 371 Date Jun. 24, 1997 Sec. 102(e) Date Jun. 24, 1997 PCT Filed Dec. 21, 1995 PCT Pub. No. WO96/20526 PCT Pub. Date Jul. 4, 1996A device for the contactless inductive transmission of electric energy to a movab...
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JP3071220B2 |
A self-powered powerline sensor includes a core layer for wrapping about an a.c. powerline; a winding layer, including of a plurality of windings to be energized by the a.c. powerline, disposed about the core layer; means for sensing a c...
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JP2000197272A |
To achieve as a whole the cost-down of a power system tied to a DC power system, and save its energy by making possible easily its power regeneration, and concurrently, make reducible the effects of its higher harmonics, without requirin...
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JP2000508511A |
PCT No. PCT/FR97/00669 Sec. 371 Date Oct. 16, 1998 Sec. 102(e) Date Oct. 16, 1998 PCT Filed Apr. 15, 1997 PCT Pub. No. WO97/39510 PCT Pub. Date Oct. 23, 1997An installation for supplying electrical power to all the electrical consumers i...
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JP2000184603A |
To restore failure of a system quickly.A failure judging means 2 receives failure information, and specifies the failure kind from the failure information and failure judgment data defined previously in a failure judgment data preserving...
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JP2000171492A |
To provide a self-feeding power line sensor for monitoring the state of the inside and surrounding of an AC power line by the non-penetration method.A power line sensor consists of means (sensors 51, 52, 53, and 54) that are arranged nea...
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JP3053281B2 |
PURPOSE: To provide a low capacity high frequency filter unit constituted of a reduced number of components by providing a parallel impedance circuit equipped with a switch for varying the internal impedance in the high frequency filter ...
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JP3052599B2 |
PURPOSE: To provide both an information memory medium and its outputting machine where the former surely holds the sufficient electromotive force of batteries for a responding circuit responding to an interrogator when used, and starts s...
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JP3029447B2 |
PURPOSE:To omit the battery used as a cursor power source by supplying an AC voltage to a cursor by electromagnetic induction from a tablet, and using it as a power source of the cursor, in the coordinate position measuring instrument. C...
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JP3029185B2 |
PURPOSE: To prevent a single operation of distributed power supplies positively without using large-scale facilities by synchronizing an output from a pulse circuit with the signal output of a reference signal source by a synchronous mea...
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JP2000060003A |
To surely restrain a shaft torsion resonance phenomenon, when the state of a system changes. A shaft torsion vibration component detecting means 31 extracts only the shaft torsion vibration component from inputted electric amount, contai...
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JP3006784B2 |
PURPOSE:To surely operate a mobile station (ID card) without batteries and to provide the device of simple circuit constitution miniaturized as much as possible. CONSTITUTION:In the device for transmitting data between a fixed station 11...
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JPH11235048A |
To provide an apparatus which dissolues a problem that an overvoltage is produced when a voltage is applied to a VSC converter simply and at a low cost. This is an apparatus for applying a voltage to a VSC 8 inside a plant for transmitti...
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JPH11234908A |
To provide a method and a system which reduces a power loss efficiently by converting a whole power into a DC power and enables the supply of a consumed power by a battery even if a power supply is interrupted. A power loss reduction met...
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JP2936440B2 |
A method and apparatus is disclosed for transferring electrical power to a balancer 14 without the need for a physical connection between the balancer and the power source 16 or the controller 12 and which also provides for data communic...
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JP2933515B2 |
To obtain a data carrier system wherein destruction of data due to voltage drop of a dry battery or replacement of battery is prevented in case of conventional optical communication system and the electromagnetic noise has no effect on t...
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JPH11215705A |
To economically improve the reliability of a duplexed power supply which converts an alternating-current voltage into a direct-current voltage and supplies it to a load. This power supply is provided with power supply terminal boards 1A,...
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JP2892183B2 |
PURPOSE:To convert the output of a solar battery without stopping an inverter by controlling the inverter by the output of CT of the output side of the inverter to be operated by the linkage with the commercial power sources through the ...
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JPH1141821A |
To make a circuit loss as small as possible, when power is circulated and the operation is continued with the circulated power kept constant at all times and, at the same time, reduce valve stresses and obtain sufficient effects for prev...
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JP2839661B2 |
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JPH10313541A |
To limit the overcurrent between a DC voltage network for a high- voltage DC(HVDC) and an AC voltage network connected to the DC voltage network through a station. A station is made applicable so as to excecute the transmission of electr...
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JPH10309040A |
To provide a high-voltage power unit which can be reduced in size and cost. In a high-voltage power unit, the whole output current of the power unit flows through a capacitor C101 and no direct current flows when a transistor Q101 is tur...
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JPH10304573A |
To solve problems generated by temporary differences between an effective power inputted in a DC voltage network and the effective power outputted from the DC voltage network. In a power transmission plant which sends electric power betw...
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JPH10304570A |
To constitute a continuous system of small transmission loss in normal times, and stabilize the system at the time of an accident. In normal times, breakers 20, 25, 23, 26 are closed, and breakers 21, 22, 24, 27 are opened, thereby const...
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JPH10304574A |
To provide a plant for sending electric power through a DC voltage network for a high-voltage direct current(HVDC) which a voids overmodulation. In a plant for sending electric power through a station 2 between a DC voltage network 1 and...
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JPH10304575A |
To provide a power transmission plant in a completely new application field. A power transmission plant contains at least one AC network 6 which is connected with the plant via a DC network 1 for a high-voltage direct current (HVDC) and ...
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JP2820706B2 |
An electric power transmitting device transmits electric energy from one coil to another coil through an inductive coupling therebetween. One of the coils has an end bent in the axial direction of the coil. When the other coil is to be i...
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JP2814804B2 |
PURPOSE: To make it possible to store various kinds of control information by utilizing one kind of an ID tag for each control point along a running route, to comparatively easily perform the change (rewriting) of the stored control info...
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JPH10285808A |
To provide a plant which transmits power between a DC network for high voltage DC(HVDC) included in the plant and at least two AC voltage networks connected to the plant through stations. About a plant which transmits power through a DC ...
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JP2813168B2 |
PURPOSE: To contrive to use a sensor power supply unit permanently by providing a secondary battery, which charged by an outside power source, and a movable contact point, which connects with a fixed contact point on the transom side at ...
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JP2803943B2 |
PURPOSE: To provide a noncontact electric-power supply device wherein, even when a load on the receiving side is fluctuated, an AC frequency which is supplied to a supply-side oscillation circuit can be tuned to the resonance frequency o...
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JP2801758B2 |
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JPH10248169A |
To reduce the influence of erroneous detection of frequency due to fluctuation in bus voltage when power flow is reversed and prevent the lifetime of a direct-current cable from being consumed due to repeated power flow reversion, by mai...
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JPH10224994A |
To control a system for linking AC systems through DC transmission well both for normal fluctuation and significant disturbance of load. An emergency/normal switch 14 receives frequency deviations F1 and F2 of systems A and B and makes a...
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