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公开(公告)号：US10110139B1
公开(公告)日：2018-10-23
申请号：US15787006
申请日：2017-10-18
Applicant: KABUSHIKI KAISHA YASKAWA DENKI
Inventor： Toshihiro Hanada , Shinichi Akimoto , Hiroyuki Imayoshi , Keisei Inoki
IPC: H02P6/16 , H02M5/27 , H02P25/062
CPC classification number: H02M5/27 , H02M5/293 , H02P21/16 , H02P23/14 , H02P25/062
Abstract: A matrix converter includes a power converter circuit connectable on one side thereof with an alternating-current supply via a high-frequency filter and connectable on another side thereof with an alternating-current motor; a snubber circuit connected with a one-side line for connecting the high-frequency filter and the power converter circuit; a discharge switch discharging a charge accumulated in the snubber circuit depending on a voltage of the snubber circuit; and a control circuit configured to execute controlling the power converter circuit on the basis of a carrier frequency in test such that a test voltage is applied to the alternating-current motor, changing the carrier frequency in test on the basis of an operation state of the discharge switch, and determining constants of the alternating-current motor on the basis of a response state of the alternating-current motor at the time when the test voltage is applied.
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公开(公告)号：US10003272B2
公开(公告)日：2018-06-19
申请号：US15554130
申请日：2016-03-25
Applicant: FUJITSU GENERAL LIMITED
Inventor： Satoshi Ichiki
Abstract: A configuration for the object includes: a bidirectional switch circuit which turns ON/OFF supply of input three-phase AC power to a load LD; and a control unit which performs virtual AC/DC conversion processing in which a plurality of interline voltage generation sections selecting two phases among the input three-phase AC power are obtained according to a plurality of modes classified according to a magnitude relationship between voltages of respective phases in the input three-phase AC power within a predetermined switching cycle and generates a switching pattern of the bidirectional switch circuit so as to perform virtual DC/AC conversion processing corresponding to the plurality of interline voltage generation sections from a second carrier waveform pattern according to the plurality of modes and a U-phase control signal and a V-phase control signal corresponding to a phase of an output side.
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公开(公告)号：US20140168848A1
公开(公告)日：2014-06-19
申请号：US13714673
申请日：2012-12-14
Applicant: REDKOH INDUSTRIES, INC.
Inventor： Paul Ford , John Jannone , Neil Flynn , Hank Del Gatto
CPC classification number: H02M5/27 , B03C3/68 , B03C2201/32 , H01T19/00
Abstract: The disclosed technology describes methods and apparatus to convert and control power provided to a precipitator. An example embodiment of the disclosed technology includes a method for providing power to a device. The method includes receiving a first silicon controlled rectifier (SCR) signal and a second SCR signal from a controller device, generating a demand signal by the controller device based on a comparison of the first and second SCR signals, transmitting the demand signal to a power converter device, converting a first power signal from a first base frequency to a second power signal at a second base frequency, wherein the first base frequency is in the range of approximately 50 Hz to approximately 60 Hz and wherein the second base frequency is controlled in the range of approximately 100 Hz to approximately 1000 Hz, and switching the second power signal to the controller device.
Abstract translation: 所公开的技术描述了转换和控制提供给除尘器的功率的方法和装置。 所公开技术的示例性实施例包括用于向设备提供电力的方法。 该方法包括从控制器设备接收第一可控硅整流器（SCR）信号和第二SCR信号，基于第一和第二SCR信号的比较，由控制器设备产生需求信号，将需求信号传输到功率 转换器装置，将第一基本频率的第一功率信号转换成第二基频的第二功率信号，其中第一基频在大约50Hz至大约60Hz的范围内，其中第二基频被控制在 大约100Hz到大约1000Hz的范围，并且将第二功率信号切换到控制器设备。
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公开(公告)号：US20090279339A1
公开(公告)日：2009-11-12
申请号：US12437343
申请日：2009-05-07
Applicant: Shinsaku NAKAYAMA , Toshinori Inagawa , Yoshinori Masubuchi
Inventor： Shinsaku NAKAYAMA , Toshinori Inagawa , Yoshinori Masubuchi
IPC: H02M5/40
CPC classification number: H02M5/27 , Y10T307/522
Abstract: In a cycloconverter generator equipped with an AC power generator that generates single-phase AC power to be supplied to a load by turning on positive and negative switching elements at variable timing every half-period of a desired AC power frequency based on a phase signal and a DC power generator that generates DC power by turning on the positive switching elements in accordance with a timing determined by desired DC voltage, there is installed with a selection switch that is installed to be operable by an user and produces an output indicative of a result of the user's selection between the AC power and DC power thereby enabling to the user to easily select either one of alternating current and direct current.
Abstract translation: 在配备有交流发电机的循环变频器发电机中，其通过基于相位信号在期望的交流电力频率的每半周期以可变的定时接通正和负的开关元件来产生将被提供给负载的单相交流电力;以及 通过根据期望的直流电压确定的定时接通正开关元件来产生直流电力的直流发电机，安装有可由用户操作的选择开关，并产生指示结果的输出 用户在AC电力和DC电力之间的选择，从而使得用户能够容易地选择交流电和直流电中的任何一个。
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5.发明授权公开(公告)号：US07187569B2
公开(公告)日：2007-03-06
申请号：US10492314
申请日：2002-10-02
Applicant: Martin C. Sinha , Lucy M. MacGregor
Inventor： Martin C. Sinha , Lucy M. MacGregor
IPC: H02M7/505
CPC classification number: H02M5/2573 , G01V3/12 , H02M5/27
Abstract: An apparatus for generating electronic signals for application in subsea electromagnetic exploration. A surface generated high-voltage low-current source signal stabilized at a first frequency is supplied to a deep-tow vehicle (18) via an umbilical cable (16). The high-voltage low-current signal is transformed at the deep-tow vehicle to a high-current low-voltage a.c. signal by a transformer (52) within a cycloconverter (30). A semiconductor relay bridge (104) provides switchable rectification of the high-current low-voltage a.c. signal to provide a quasi-square wave at a second frequency, lower than the first frequency, for supply to a transmitting antenna (22) towed by the deep-tow vehicle. The times of the rectification switching are dependent on zero crossings of the high-current low-voltage a.c. signal. Allowable rectification switching times may be gated to occur only within pre-determined time windows to avoid noise-induced zero-crossing switching. The apparatus allows multiple transmission frequencies to be derived from a single stabilized source and improves spectral integrity by avoiding rectification switching at zero-crossings not occurring at the first frequency.
Abstract translation: 一种用于生成应用于海底电磁勘探的电子信号的装置。 以第一频率稳定的表面产生的高电压低电流源信号经由脐带缆（16）供应到深拖车辆（18）。 高压低电流信号在深拖车车辆变换为高电流低压电流。 由循环变换器（30）内的变压器（52）发出信号。 半导体继电器桥（104）提供高电流低压交流电的可切换整流。 信号以提供低于第一频率的第二频率的准方波，以供给由深拖车车辆牵引的发射天线（22）。 整流开关的时间取决于高电流低电压交流的零交叉。 信号。 允许的整流切换时间可以仅在预定时间窗口内进行，以避免噪声引起的过零切换。 该装置允许从单个稳定源导出多个传输频率，并且通过避免在不在第一频率处发生的过零点处的整流切换来提高频谱完整性。
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Patent Agency Ranking6.发明授权
公开(公告)号：US4317975A
公开(公告)日：1982-03-02
申请号：US972881
申请日：1978-12-26
Applicant: Takumi Mizukawa , Keizo Amagami , Mitsuyuki Kiuchi , Hirokazu Yoshida , Tatsuo Saka
Inventor： Takumi Mizukawa , Keizo Amagami , Mitsuyuki Kiuchi , Hirokazu Yoshida , Tatsuo Saka
Abstract: Induction heating apparatus using gate-controlled switching devices includes a zero crossing point detector for detecting the occurrence of each zero crossing point of high frequency energization current, and a timing circuit which provides timing action in response to the detected zero crossing point. The timing action is controlled by a power control circuit which detects the level of energy delivered to a load within a range from the inherent turn-off time of the gate-controlled switching devices to a desired value.
Abstract translation: 使用栅极控制开关器件的感应加热装置包括用于检测高频通电电流的每个过零点的出现的过零点检测器，以及响应于检测到的过零点提供定时动作的定时电路。 定时动作由功率控制电路控制，功率控制电路检测在从门控开关装置的固有关断时间到期望值的范围内传送到负载的能量的水平。
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公开(公告)号：US4211912A
公开(公告)日：1980-07-08
申请号：US927649
申请日：1978-07-24
Applicant: Mitsuyuki Kiuchi , Shigeo Hamaoka
Inventor： Mitsuyuki Kiuchi , Shigeo Hamaoka
Abstract: An induction heating apparatus includes a pair of thyristors inversely parallel connected to receive power from a low frequency energy source, a commutating circuit and a gating control circuit for supplying control pulses to the thyristors to produce a forward halfwave current through the commutating circuit which in return produces a backward commutating current to the thyristors. The gating control circuit includes a pulse transformer having a pair of secondary windings connected to the thyristors and a primary winding responsive to control pulses supplied from a pulse generator to produce a positive gating pulse in each of the secondary windings to drive one of the thyristors into conduction depending on the polarity of the source voltage to produce the forward current. The control pulse has a longer duration than the maximum duration of the forward halfwave current so that upon cessation of the forward current the other thyristor is gated into conduction to allow the backward commutating current to pass therethrough to complete an oscillation cycle. A counterelectromotive force is generated in the secondary windings in response to the trailing edge of the positive gating pulse to negatively bias the thyristor to quickly turn it off.
Abstract translation: 感应加热装置包括一对可逆并联连接以从低频能源接收功率的晶闸管，换向电路和选通控制电路，用于向晶闸管提供控制脉冲以产生通过换向电路的正向半波电流 产生向晶闸管的反向换向电流。 选通控制电路包括具有连接到晶闸管的一对次级绕组的脉冲变压器和响应于从脉冲发生器提供的控制脉冲以在每个次级绕组中产生正门控脉冲的初级绕组，以驱动其中一个晶闸管 导通取决于源电压的极性产生正向电流。 控制脉冲具有比正向半波电流的最大持续时间更长的持续时间，使得在正向电流停止时，另一晶闸管选通导通，以允许反向换向电流通过其中以完成振荡周期。 响应于正门控脉冲的后沿在次级绕组中产生反电动势，以对晶闸管负偏置以快速将其关闭。
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公开(公告)号：US4162522A
公开(公告)日：1979-07-24
申请号：US849916
申请日：1977-11-09
Applicant: Nathan A. Moerman
Inventor： Nathan A. Moerman
CPC classification number: H01F38/02 , G05F1/38 , H01F29/14 , H02M5/27 , H01F2029/143 , H01F2038/026
Abstract: Apparatus for conversion of alternating current at a first frequency to alternating current at a second (lower) frequency in a power control circuit by means of progressive variation of magnetic flux in associated magnetic paths. Control is achieved by progressive saturation or domain rotation for selected portions of the magnetic paths to yield a uniformly controllable permeance within the magnetic paths. Feedback circuits provide a means for external control of the output in combination with a reference source.
Abstract translation: 用于在功率控制电路中通过相关磁路中的磁通量的逐渐变化将第一频率的交流电转换为第二（较低）频率的交流电的装置。 通过对磁路的选定部分的逐渐饱和或域旋转实现控制，以在磁路内产生均匀可控的磁导。 反馈电路提供了与参考源组合的输出的外部控制的手段。
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公开(公告)号：US3735237A
公开(公告)日：1973-05-22
申请号：US3735237D
申请日：1971-09-01
Applicant: RAYTHEON CO
Inventor： DERBY P
Abstract: A cycle converter power supply circuit comprising four silicon controlled rectifiers (SCR''s), electronic semiconductor switches, used to program current flow through four separate legs of a transformer in a manner to produce an alternating current at a frequency considerably in excess of the prime power. A bridge rectifier circuit in the secondary of the transformer permits the power to be converted to a direct current flow similar in character to what would be achieved through rectification of the prime power. Since the voltage conversion is accomplished at a higher frequency than the prime power, the core area of the transformer can be reduced roughly by the square root of the switching frequency.
Abstract translation: 一种循环转换器电源电路，包括四个可控硅整流器（SCR），电子半导体开关，用于以以显着超过主功率的频率产生交流电的方式编程通过变压器的四个独立支路的电流。 变压器次级中的桥式整流电路允许将功率转换成与通过整流主电源实现的特性相似的直流电流。 由于电压转换是以比主功率更高的频率完成的，所以变压器的核心区域可以大大减小开关频率的平方根。
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公开(公告)号：US3611087A
公开(公告)日：1971-10-05
申请号：US3611087D
申请日：1970-05-12
Applicant: ISAAK MAXIMOVICH SHTEIN
Inventor： SHTEIN ISAAK MAXIMOVICH
CPC classification number: H02M5/27
Abstract: As is well known, a six-phase thyristor circuit of a so-called cycloconverter provided with 36 thyristors allows an output frequency at the order of 15 to 20 c.p.s. to be produced with the network frequency being equal to 60 c.p.s. A frequency-controlled AC drive of the invention is based on the use of modulation apparatus of nonreversible magnetic amplifiers with an output of second harmonics and diodes, which simultaneously perform functions of demodulators and internal feedback tubes. Thyristors are employed for varying the direction of current in the windings of the motors. For a three-phase motor provided with six-phase magnetic amplifiers, there are required in total 6 thyristors and 36 noncontrolled diodes. Thus an output frequency is obtained ranging from 0 to 90 percent of the network frequency. Hence, at a frequency of 60 c.p.s. it is possible to achieve a gradual variation in frequency from 0 to 50-55 c.p.s. Efficiency of the modulators based on double magnetic amplifiers attains even with low powers a value of the order of 80 percent. Even with low frequencies and voltages, the output voltage will approximate a sinusoidal one. The present invention may be used at increased network frequencies of the order of 400 to 500 c.p.s. for driving induction and synchronous alternating current motors of an increased rotation speed.
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