| 序号 | 专利名 | 申请号 | 申请日 | 公开（公告）号 | 公开（公告）日 | 发明人 |
|---|---|---|---|---|---|---|
| 101 | Multiphase to single phase and frequency converter system | US726791 | 1976-09-27 | US4115729A | 1978-09-19 | Thomas A. Young; Ronald J. Freimark |
| A multiphase to single phase electrical energy converter wherein the frequency is converted from a relatively high frequency, in the order of 1,000 hertz, to a relatively low frequency, as for example, normal household frequency of 60 hertz. A three-phase alternator is driven by an internal combustion engine and in one form of the invention the output of the alternator is fed to a controllable, full-wave bridge circuit and finally to an inverter. The controllable bridge circuit is controlled by a resolver, the resolver, alternator rotor and internal combustion engine all operating at the same rotary speed. In the one form the resolver is utilized to control the conduction of a plurality of controlled semiconductor devices interconnected between the output windings of the alternator and the invertor to control the delivery of energy from the alternator to the inverter. In another form the controlled semiconductor devices are replaced by a modified resolver. In accomplishing the control, the controlled rectifiers or modified resolver are rendered conductive to provide an average current or power to the inverter which increases and decreases in a unipolar sinusoidal form at a frequency which is twice the desired output frequency. The bridge circuit then provides an output to an inverter device which is rotating at one-half the speed of the resolver, the inverter being utilized to invert every other cycle of the output from the resolver. Thus, the power from the inverter will take the form of an alternating sinusoid waveform insofar as the power output is concerned at 60 hertz. | ||||||
| 102 | Power transformer primary winding fuse arrangement | US3711747D | 1971-08-10 | US3711747A | 1973-01-16 | SAHARA H; YAMAKAWA K |
| A power supply for use with different AC line voltages, which includes a power transformer having a plurality of separate primary windings and a corresponding plurality of fuses connected thereto. The primary windings are connected to each other in several different ways to change the turns ratio of the power transformer depending upon the value of the voltage supplied thereto. Thus, a predetermined voltage is produced in the secondary winding of the transformer irrespective of the value of the supplied AC line voltage and the current flowing through each of the fuses is held substantially constant, during normal operating conditions, regardless of the manner in which the separate primary windings are connected.
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| 103 | Transformer power supply for remote controlled receivers with provision for fast warm-up | US3573629D | 1969-04-01 | US3573629A | 1971-04-06 | BUELL DONALD F |
| A transformer power supply for a remote controlled receiver provides reduced filament power in the OFF condition by increasing the primary to secondary turns ratio for the filament supply winding when the receiver is turned OFF. At the same time, the number of turns in the secondary winding supplying the remote control circuits is increased in the same ratio as the increase in the primary turns so as to maintain a constant operating voltage to the remote control circuits, thus enabling the receiver to be turned ON remotely. Switching of the turns in the various windings is provided by a relay connected across the lowvoltage portion of the remote control supply winding.
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| 104 | Frequency conversion system utilizing modulation | US57067366 | 1966-08-05 | US3369168A | 1968-02-13 | MAUST JR EDWIN E; HYDE GARRETT R |
| 105 | Frequency changer with a plurality of transformers and a synchronously rotating means | US45774865 | 1965-05-21 | US3359482A | 1967-12-19 | JARLE SLETBAK; GUNNAR NILLSON; LARS-GORAN VIRSBERG |
| 106 | Synchronously controlled resonant ac to ac converter | US55967566 | 1966-05-23 | US3359480A | 1967-12-19 | O'MEARA THOMAS R |
| 107 | Frequency changer employing a moving sonic-energy-reflecting boundary in a semiconductor medium | US20875962 | 1962-07-10 | US3254231A | 1966-05-31 | GANDHI OM P |
| 108 | Electric supply arrangements | US63345357 | 1957-01-10 | US2891211A | 1959-06-16 | HUGH STONEHOUSE BERNARD |
| 109 | Means for producing low-frequency electrical oscillations | US19445350 | 1950-11-07 | US2730670A | 1956-01-10 | LENNART BORG |
| 110 | Piezoelectric device | US32229940 | 1940-03-05 | US2385896A | 1945-10-02 | VON BECKERATH HANS |
| 111 | Constant frequency power supply system | US30683839 | 1939-11-30 | US2260931A | 1941-10-28 | BOND DONALD S; MOSELEY FRANCIS L |
| 112 | METHOD FOR CONTROLLING ELECTRIC POWER CONVERSION SYSTEM AND CONTROL ARRANGEMENT FOR ELECTRIC POWER CONVERSION SYSTEM | US15897394 | 2018-02-15 | US20180233921A1 | 2018-08-16 | Jani Kangas; Tomi Riipinen |
| A method and a control arrangement for an electric power conversion system including a plurality of electric power converters, the control arrangement configured to collect data related to the electric power conversion system, determine an optimal configuration for each one of the electric power converters of the electric power conversion system on the basis of collected data through a simulation of the electric power conversion system generate, for each one of the electric power converters, a source code for a firmware of the electric power converter on the basis of the determined optimal configuration for the electric power converter in question, and re-program each one of the electric power converters with the respective source code generated for the electric power converter in question. | ||||||
| 113 | Arrangement providing a 3-phase or 1-phase power stream | US14785395 | 2014-04-25 | US09917527B2 | 2018-03-13 | Ove Boe |
| An arrangement is provided for alternatively providing a 3-phase or a 1-phase power stream. In an embodiment, the arrangement includes a 3-phase power source including a first, a second and a third power source output terminal; a switching section adapted to selectively provide, from the three power source output terminals of the 3-phase power source, either: a 3-phase power stream at three arrangement output terminals or a 1-phase power stream at two arrangement output terminals, different from the three arrangement output terminals. | ||||||
| 114 | System and method for operating a three-phase load from a single phase source | US14969872 | 2015-12-15 | US09667177B1 | 2017-05-30 | Huaqiang Li; Wenxi Yao; Zhengyu Lu |
| A power converter for operating a three-phase AC electrical machine from a single phase AC power source includes an ASD having a rectifier and inverter, and an add-on power conversion module external to the ASD that is electrically connected to each of the power source and the ASD. The power conversion module includes one or more input inductors configured to store and filter single-phase AC power received from the power source and a pair of switching devices connected to each of the input inductors at an output end thereof. A controller operably connected to the power conversion module selectively controls switching of the pair of switching devices associated with each of the one or more input inductors so as to cause a sinusoidal single phase AC power to be output from the add-on power conversion module for rectification by the rectifier. | ||||||
| 115 | Low voltage detector | US13427853 | 2012-03-22 | US09461562B1 | 2016-10-04 | Jaskarn Singh Johal; Andrew C. Page; Timothy John Williams |
| An apparatus includes a voltage monitoring device to generate a brownout indication signal in response to a change in a power supply voltage. The apparatus also includes a mode control device to control a temporal response of the voltage monitoring device to the change in the power supply voltage based, at least in part, on a voltage level of the power supply voltage. | ||||||
| 116 | Frequency converter unit | US13441423 | 2012-04-06 | US09231490B2 | 2016-01-05 | Mika Silvennoinen; Mika Vartiainen; Jani Hakala |
| A frequency converter unit includes a unit body, input bus bar means and output bus bar means. The input bus bar means have a plurality of input side bus bars spaced apart in a first direction, and the output bus bar means have a plurality of output side bus bars spaced apart in the first direction, which is perpendicular to an installation direction of the frequency converter unit. Each of the plurality of input side bus bars and the plurality of output side bus bars includes an aperture configured to connect the bus bar to a counterpart contact in a frame with a bolt-nut connection. | ||||||
| 117 | Method and apparatus for electric isolation transmission | US12982911 | 2010-12-31 | US09124168B2 | 2015-09-01 | Ju-Lu Sun; Jing-Peng Zhu; Ming Xu |
| A method and apparatus used for electric isolation transmission are provided. The method includes: providing an isolation transmission circuit having at least one capacitor; and implementing electric isolation between the primary side and secondary side, and suppressing leakage currents generated between the primary side and secondary side and transmitting power. The apparatus includes the isolation transmission circuit that is manufactured by capacitor(s). The apparatus can be applied to light-weight power sources providing AC/DC outputs with high efficiency, adapters, or related products. In addition, the apparatus has a reduced size and higher power transmission efficiency. | ||||||
| 118 | Apparatus and method for controlling medium voltage inverter | US13551388 | 2012-07-17 | US09093892B2 | 2015-07-28 | Jae Hyun Jeon |
| Provided is an apparatus and method for controlling medium voltage inverter, whereby a frequency outputted by the medium voltage inverter is fixed, in a case an instantaneous power interrupt occurs while the medium voltage inverter drives a motor, and a voltage level of an AC power generated by the medium voltage inverter is reduced and outputted in response to a predetermined deceleration slope to control the medium voltage inverter. | ||||||
| 119 | Isolated dynamic current converters | US13726524 | 2012-12-24 | US09065321B2 | 2015-06-23 | Deepakraj M. Divan; Anish Prasai; Hao Chen |
| Isolated Dynamic-Current (“Dyna-C”) converters are converters that convert incoming 3-phase AC or DC power to a mix of DC and AC power via an isolation link. In various embodiments, the isolation link is a high-frequency isolation transformer. Isolated Dyna-C converters may provide a high-frequency galvanic isolation and are able to convert three-phase AC power to three-phase AC power, or three-phase AC power to DC and vice versa. The topology is minimal and the costs are low. Isolated Dyna-C converters provide fast current responses and keep the losses low by using a simplified two-stage conversion and providing a magnetizing current that is dynamically controllable and tailored to the load. An isolated Dyna-C converter may synthesize currents at its input or output ports with an arbitrary phase that is relative to the grid or load voltages, thereby enabling a full independent control over the active and reactive power at its ports. | ||||||
| 120 | SUBSEA ELECTRICAL ARCHITECTURES | US14122615 | 2012-05-31 | US20140097678A1 | 2014-04-10 | Edouard Thibaut; Henri Baerd |
| The subject-matter of the present invention concerns an electrical architecture for power distribution to subsea equipment comprising at least one variable speed drive, VSD, module, wherein said at least one VSD module comprises at least one self commutated line side converter including power semiconductor. | ||||||
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