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公开(公告)号：US10027239B2
公开(公告)日：2018-07-17
申请号：US15674512
申请日：2017-08-10
发明人： Chang-Yong Wang , Li Cai , Yan-Song Lu
摘要： A wind power converter device is provided. The wind power converter device includes grid side converters, generator side converters and a DC bus module. Each of the grid side converters includes grid side outputs electrically coupled to a grid and a first and a second DC inputs. Each two of the neighboring grid side converters are connected in series at the second and the first DC inputs. Each of the generator side converters includes generator side inputs electrically coupled to a generator device and a first and a second DC outputs. Each two of the neighboring generator side converters are coupled in series at the second and the first DC outputs. The DC bus module is electrically coupled between the grid side converters and the generator side converters.
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公开(公告)号：US20170366096A1
公开(公告)日：2017-12-21
申请号：US15674512
申请日：2017-08-10
发明人： Chang-Yong WANG , Li CAI , Yan-Song LU
CPC分类号： H02M5/4505 , F03D9/255 , H02M5/45 , H02M5/452 , H02M5/4585 , H02M7/7575 , H02M2001/0077 , Y02E10/72 , Y02E10/76
摘要： A wind power converter device is provided. The wind power converter device includes grid side converters, generator side converters and a DC bus module. Each of the grid side converters includes grid side outputs electrically coupled to a grid and a first and a second DC inputs. Each two of the neighboring grid side converters are connected in series at the second and the first DC inputs. Each of the generator side converters includes generator side inputs electrically coupled to a generator device and a first and a second DC outputs. Each two of the neighboring generator side converters are coupled in series at the second and the first DC outputs. The DC bus module is electrically coupled between the grid side converters and the generator side converters.
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公开(公告)号：US5856917A
公开(公告)日：1999-01-05
申请号：US604964
申请日：1996-06-18
申请人： Kenichi Aonuma , Shigetaka Maeyama , Hiromitsu Hirayama, deceased , Hiroko Hirayama, heiress , Hiroshi Hirayama, heiress , Hisahiko Abe
发明人： Kenichi Aonuma , Shigetaka Maeyama , Hiromitsu Hirayama, deceased , Hiroko Hirayama, heiress , Hiroshi Hirayama, heiress , Hisahiko Abe
IPC分类号： H02M5/452
CPC分类号： H02M1/4225 , H02M1/32 , H02M2001/007 , Y02B70/126 , Y02P80/112
摘要： Device including an input rectifying circuit 2 for effecting a full wave rectification on an AC input, and an output converter which includes a transforming device 11 having a primary winding 11a and a secondary winding 11b, the primary winding being connected through an inductor 16 with paired outputs of the input rectifying circuit, the secondary winding being connected through an output rectifying circuit with a load. Switching element 18 is controlled by a control circuit 20 to operate between ON and OFF states, and capacitor 19 is connected with the input rectifying circuit and the transforming device so as to be charged during the OFF state period of the switching element 18 through a charging circuit including the inductor 16, and to discharge during the ON state period through the primary winding 11a of the transforming device 11. The control circuit 20 controls the switching element to operate in an ON-OFF manner with a frequency faster than the frequency of the AC input. A second switching element 31 is connected in series with the inductor 16 to paired outputs of the input rectifying circuit 2 and through a diode 17 with a capacitor charging circuit. An interrupting device renders the second switching element non-conductive when the current through the second switching element exceeds a predetermined value.
摘要翻译： PCT No.PCT / JP95 / 01753 Sec。 371日期1996年6月18日 102（e）日期1996年6月18日PCT提交1995年9月4日PCT公布。 公开号WO96 / 08073 日期1996年3月14日设备包括用于在AC输入端进行全波整流的输入整流电路2和包括具有初级绕组11a和次级绕组11b的变换装置11的输出转换器，初级绕组通过 具有输入整流电路的成对输出的电感器16，次级绕组通过输出整流电路与负载连接。 开关元件18由控制电路20控制以在导通和截止状态之间操作，并且电容器19与输入整流电路和变换装置连接，以便在开关元件18的截止状态期间通过充电 包括电感器16的电路，并且在导通状态期间通过变压装置11的初级绕组11a进行放电。控制电路20控制开关元件以ON-OFF方式工作，频率比 交流输入。 第二开关元件31与电感器16串联连接到输入整流电路2的成对输出，并通过具有电容器充电电路的二极管17连接。 当通过第二开关元件的电流超过预定值时，中断装置使第二开关元件不导通。
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公开(公告)号：US10291143B2
公开(公告)日：2019-05-14
申请号：US15571841
申请日：2017-02-28
发明人： Zhigang Liao , Tao Hou
摘要： A long-life intelligent step-down conversion device includes a high-frequency modulation unit including a first switching tube and a second switching tube, an inductance filtering unit including a filtering inductor, and an inverting paraphase unit. The drain of the first switching tube is connected to a DC voltage, its source connects to the drain of the second switching tube, and the source of the second switching tube is carthed. The grids of the first and second switch tubes are respectively connected to two-path anti-phased PWM pulse signals. The front end of the filtering inductor is connected to the source of the first switching tube. The inverting paraphase unit, with its input terminal connected to the back end of the filtering inductor, is configured for invertedly converting a half-wave pulse voltage output from the back end of the filtering inductor to a sine AC voltage. Which of easy to carry, without electrolytic capacitors, improving the service life, avoiding interference to the power grid.
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公开(公告)号：US07280377B2
公开(公告)日：2007-10-09
申请号：US10918354
申请日：2004-08-16
申请人： James P. Johnson
发明人： James P. Johnson
IPC分类号： H02M7/5395 , H02M5/452
CPC分类号： H02M7/538
摘要： Consistent with an aspect of the present disclosure, a backup fuel cell, for example, is coupled to a utility power grid, through a power conversion circuit. The power conversion circuit may include an inverter circuit, pulse generating circuit and control circuit. The inverter circuit is configured to receive a DC signal and output a first AC signal, and the pulse generating circuit generates a pulse signal in response to a change in a parameter associated with a second utility generated AC signal. The control circuit is coupled to the inverter circuit, and is configured to receive the pulse signal. In addition, the control circuit supplies a control signal to the inverter circuit to adjust a parameter associated with the first AC signal in response to the pulse.
摘要翻译： 根据本公开的一个方面，备用燃料电池例如通过功率转换电路耦合到公用电力网。 电力转换电路可以包括逆变器电路，脉冲发生电路和控制电路。 逆变器电路被配置为接收DC信号并输出第一AC信号，并且脉冲发生电路响应于与第二公用事业产生的AC信号相关联的参数的变化而产生脉冲信号。 控制电路耦合到逆变器电路，并被配置为接收脉冲信号。 此外，控制电路向逆变器电路提供控制信号，以响应于脉冲来调整与第一AC信号相关联的参数。
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公开(公告)号：US5019766A
公开(公告)日：1991-05-28
申请号：US376622
申请日：1989-07-07
申请人： John S. Hsu , Herbert H. Woodson
发明人： John S. Hsu , Herbert H. Woodson
摘要： A method and apparatus for improving the performance of polyphase AC machine is provided. The machines are excited with both a fundamental frequency and with an odd harmonic of the fundamental frequency so that a fundamental flux wave and an odd harmonic flux wave travel at a synchronized speed within the air-gap of the machine. The phase angle between the fundamental and odd harmonic excitation is controlled to increase the magnetic loading of one portion of the machine, while reducing the magnetic loading of the another portion of the machine. In this manner, redistribution of the flux densities is effected to more efficiently use the various components of the machine to increase torque.
摘要翻译： 提供了一种改善多相交流电机性能的方法和装置。 这些机器都以基频和基频的奇次谐波激励，使得基波通量波和奇次谐波通量波以机器的气隙内的同步速度行进。 控制基波和奇次谐波激励之间的相位角，以增加机器一部分的磁负载，同时减小机器另一部分的磁负载。 以这种方式，实现磁通密度的再分布，以更有效地使用机器的各种部件来增加转矩。
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公开(公告)号：US5016157A
公开(公告)日：1991-05-14
申请号：US428759
申请日：1989-10-30
摘要： The problem of reducing harmonic content of AC bus voltage in a power system (10) is minimized using a controller (30) for a PWM inverter (38). The controller (30) develops a duty cycle command on a line (40) for controlling operation of the PWM inverter (38). The controller (30) develops the duty cycle command to maintain the PWM inverter output voltage at a desired level. This duty cycle command is modulated in accordance with the harmonic content evident on a DC bus (34) which supplies power to the PWM inverter (38).
摘要翻译： 使用用于PWM逆变器（38）的控制器（30）来最小化在电力系统（10）中减少AC总线电压谐波含量的问题。 控制器（30）在用于控制PWM逆变器（38）的操作的线路（40）上产生占空比指令。 控制器（30）产生占空比指令，以将PWM逆变器输出电压维持在期望的水平。 该占空比指令根据向PWM逆变器（38）供电的DC总线（34）上明显的谐波含量进行调制。
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公开(公告)号：US11201558B2
公开(公告)日：2021-12-14
申请号：US16281731
申请日：2019-02-21
摘要： An operating circuit and a method for operating a synchronous machine on a voltage supply network is disclosed. The operating circuit has a converter circuit with controllable converter switches and a controllable switching arrangement to switch the converter circuit between a start converter configuration and a direct converter configuration. The power supply network is connected to a converter output and the synchronous machine is connected to a converter input of the converter circuit. In the direct converter configuration, an AC voltage is provided at the converter output with a preset AC voltage frequency. In the direct converter configuration, the switching of the AC voltage between the converter input and the converter output takes place without intermediate rectification.
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公开(公告)号：US20210167692A1
公开(公告)日：2021-06-03
申请号：US17259500
申请日：2019-03-11
申请人： OMRON Corporation
发明人： Noriyuki NOSAKA , Takeo NISHIKAWA , Wataru OKADA , Satoshi IWAI , Takanori ISHII , Gun ETO
摘要： A power converter apparatus is provided to include a switching circuit, and a filter circuit. The switching circuit generates an AC voltage by switching a DC voltage at a predetermining switching frequency, and the filter circuit converts the AC voltage from the switching circuit into the DC voltage by low-pass filtering the AC voltage. The filter circuit induces first and second bypass capacitors, and an inductor. The first bypass capacitor bypasses noise of a first frequency component of the AC voltage from the switching circuit, and the second bypass capacitor bypasses noise of a second frequency component of the AC voltage from the switching circuit, which is lower than the first frequency component. The inductor is inserted between the first and second bypass capacitors, and the inductance thereof is set so that a resonance frequency of the filter circuit is lower than the switching frequency by insertion of the inductor.
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公开(公告)号：US09912259B2
公开(公告)日：2018-03-06
申请号：US14765420
申请日：2013-02-14
发明人： Hiroshi Ogino , Akinobu Ando , Yasuhiko Hosokawa , Ryota Okuyama
CPC分类号： H02P1/022 , H02M1/32 , H02M1/36 , H02M5/4505 , H02M5/452 , H02P1/52 , H02P2201/13
摘要： A thyristor starting device includes: a converter which converts AC power supplied from an AC power source into DC power; a DC reactor which smooths a DC current; an inverter which converts the DC power provided from the converter into AC power, and supplies the AC power to a synchronous machine; a gate pulse generation circuit which generates a gate pulse to be provided to thyristors of the converter and the inverter; a control unit which sets a phase control angle of the gate pulse to be provided to the thyristors of the converter, by controlling a current of the converter such that the DC current flowing into the DC reactor matches a current command value; and an abnormality detection unit which compares a detection value of the DC current with the current command value, and determines an abnormality in the gate pulse based on a comparison result.
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