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公开(公告)号：US09780645B2
公开(公告)日：2017-10-03
申请号：US14313255
申请日：2014-06-24
申请人： Enphase Energy, Inc.
发明人： Martin Fornage , Michael Harrison
CPC分类号： H02M1/42 , H02M1/12 , H02M1/14 , H02M1/24 , H02M3/285 , H02M3/335 , H02M3/3353 , H02M7/4807 , H02M2001/007 , Y02B70/12
摘要： A method and apparatus for converting DC input power to DC output power with reactive power control. The apparatus includes a plurality of flyback circuits, coupled in parallel, and a DC-AC inversion circuit coupled across an output of each flyback circuit of the plurality of flyback circuits. The apparatus also including a reactive power control circuit coupled to an output of one flyback circuit of the plurality of flyback circuits, and across an output of the DC-AC inversion circuit; and a controller operative to coordinate timing of switches in each flyback circuit of the plurality of flyback circuits and the reactive power control circuit to generate AC output power of a desired power factor.
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公开(公告)号：US09762115B2
公开(公告)日：2017-09-12
申请号：US13366255
申请日：2012-02-03
申请人： Viswa N. Sharma
发明人： Viswa N. Sharma
CPC分类号： H02M1/10 , H02M3/33584 , H02M5/225 , H02M7/4807 , H02M7/797 , H02M2007/4815 , Y02B70/1433 , Y02B70/1441
摘要： The apparatus of present invention converts AC or DC power sources to AC or DC power loads, in a single stage, bidirectionally, employing variable, high frequency resonant circuits and power switches, to continuously vary the gain of the conversion circuit. Inrush current control, idle converter turn off, line voltage brown out protection, soft start, high pre-charge voltage generation, soft shut down, and dimming operation are inherent characteristics of the apparatus of the instant invention. A remotely configurable and operable controller may optionally be used to control the mode of conversion, the amplitude and frequency of the output voltages. The resonant circuits can be paralleled to derive multiple outputs. Multiple converter stages can be cascaded to meet the various power needs of an application such as multiple outputs and different amplitudes. Components can be eliminated for specific conversion applications. The circuits can be implemented in semiconductor packages.
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公开(公告)号：US09750125B2
公开(公告)日：2017-08-29
申请号：US15159337
申请日：2016-05-19
申请人： Hitachi, Ltd.
CPC分类号： H05K1/0201 , H02M3/335 , H02M7/4807 , H02M7/487 , H02M7/49 , H05K1/0207 , H05K7/20909 , Y02B70/1433
摘要： Size and weight reduction of a transformer for system interconnection is needed. Applying an SST to the transformer can reduce the size and weight. However, it is also necessary to flexibly handle a wide range of voltages to match a high-voltage system or motor, reduce switching loss of a power device used in a power circuit such as a DC/DC converter and an inverter in association with frequency increase caused by application of the SST, and achieve size reduction of a cooling structure. Further, it is necessary to boost a voltage to a system voltage and reduce the size and weight of a large current path before the voltage boosting. Thus, an LLC resonant converter structure is applied, and a multiple-connection structure is employed in each of which a converter is arranged for an input or an inverter is arranged for an output. This enables handling of various voltage ranges by various combinations of the numbers of multiple connections of the inputs and the outputs. An insulation cooling structure is provided by a wind-tunnel structure in which two input and output substrates are opposed and are connected by insulation members, and another wind-tunnel structure arranged in the downstream of the wind-tunnel structure and including the LLC resonant structure therein. The wind-tunnel structures are integrated with each other.
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24.发明申请公开(公告)号：US20170229972A1
公开(公告)日：2017-08-10
申请号：US15503488
申请日：2015-08-11
发明人： Diogo André CERQUEIRA PINTO BEZERRA VARAJÃO , Luís Miguel FARIA MIRANDA , Rui Manuel ESTEVES ARAÚJO
CPC分类号： H02M7/217 , G01R25/005 , H02J3/18 , H02J3/32 , H02J3/38 , H02M5/297 , H02M7/4807 , H02M7/797 , Y02E40/30
摘要： The present application presents a solution that intends to solve the problem of providing a single-stage bidirectional power conversion system (PCS) with a controllable power factor and the capability to regulate the current in the DC side. Disclosed is a single-stage, bidirectional and high-frequency isolated PCS, comprising a high-frequency transformer (HFT), a three-phase-to-single-phase matrix converter (MC), a full-bridge (FB) AC to DC converter, and a control system, where the control system outputs are connected to the switches of the MC and the FB converter. Moreover, the PCS output can also form a DC network for energy supply of several devices. This system converts three-phase AC power input from the network into DC power output that can be used for example to charge an energy storage device or supply a direct current distribution system. It is also possible to convert DC power input into AC power output to supply the network.
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公开(公告)号：US20170155342A1
公开(公告)日：2017-06-01
申请号：US15425712
申请日：2017-02-06
发明人： Gerald Deboy
IPC分类号： H02M7/5387 , H02J3/38
CPC分类号： H02M7/53871 , H02J3/383 , H02M7/4807 , H02M7/53873 , H02M2001/007 , H02M2001/0077 , H02M2007/4815 , Y02E10/563
摘要： A multiphase power converter circuit includes at least two single phase power converter circuits. Each single phase power converter circuit includes at least one converter series circuit with a number of converter units. The converter series circuit is configured to output a series circuit output current. A synchronization circuit is configured to generate at least one synchronization signal. At least one of the converter units is configured to generate an output current such that at least one of a frequency and a phase of the output current is dependent on the synchronization signal.
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公开(公告)号：US09654036B2
公开(公告)日：2017-05-16
申请号：US15029445
申请日：2014-10-02
发明人： Yusuke Zushi , Jon C. Clare , Alan Watson
CPC分类号： H02P6/14 , B60L11/1803 , B60L11/1864 , B60L15/007 , B60L2210/10 , B60L2210/42 , B60L2240/526 , B60L2240/527 , B60L2270/147 , H02J7/0065 , H02M7/4807 , H02M7/49 , Y02T10/645 , Y02T10/7005 , Y02T10/7061 , Y02T10/7216 , Y02T10/7241
摘要： There is provided a power conversion device including a plurality of Direct Current (DC) power sources (VB) that converts an output voltage of each of the DC power sources into an Alternating Current (AC) voltage, and outputs the converted AC voltage in series connection, and the device includes: a DC/DC converter (21) connected to each of the DC power sources (VB) to convert the output voltage of the DC power sources; a control device (31) that controls an output voltage of the each DC/DC converter (21); and an H-bridge circuit (22) provided on the output side of the DC/DC converter (21) to convert the voltage output from the DC/DC converter (21) into an AC voltage.
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公开(公告)号：US20170104422A1
公开(公告)日：2017-04-13
申请号：US15312151
申请日：2015-03-11
发明人： Toshiaki Okumura , Naoki Ayai
IPC分类号： H02M7/487
CPC分类号： H02J3/38 , H02J3/46 , H02M3/28 , H02M7/4807 , H02M7/487 , H02M7/53875 , H02M7/5395 , H02M2001/0048 , Y02B70/1491
摘要： A power conversion device includes: a conversion device for each phase which converts DC voltage inputted from a DC power supply, to voltage having an AC waveform to be outputted to each phase with respect to a neutral point of three-phase AC; and a control unit which controls these conversion devices. Each conversion device includes: a first conversion unit which has a DC/DC converter including an isolation transformer, and a capacitor, and which converts the inputted DC voltage to voltage containing a pulsating-current waveform corresponding to the absolute value of voltage obtained by superimposing a third-order harmonic on a fundamental wave as the AC waveform to be outputted; and a second conversion unit which has a full-bridge inverter for inverting the polarity of the voltage containing the pulsating-current waveform, per one cycle, thereby converting the voltage to voltage having the AC waveform.
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公开(公告)号：US09621064B2
公开(公告)日：2017-04-11
申请号：US14904336
申请日：2013-12-26
CPC分类号： H02M5/458 , H02M1/36 , H02M3/1582 , H02M7/4807 , H02M2001/007
摘要： In a voltage-type DC power supply provided with an inverter, current supply from the inverter to the load side is suppressed when arc is generated. DC output from the voltage-type DC power supply is suspended and resumed: upon suspending the DC output, the chopper is separated from the inverter, thereby suppressing excessive current to the load when arc is generated, allowing the arc to be extinguished at high speed, and holding the current passing through the chopper in the form of circulating current. Upon restarting the inverter, the circulating current being held is supplied to the load, thereby reducing a delay of supply of DC power to the load at the time of resuming the DC output from the voltage-type DC power supply.
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公开(公告)号：US20170005565A1
公开(公告)日：2017-01-05
申请号：US14789412
申请日：2015-07-01
发明人： Hua BAI , JUNCHENG LU
CPC分类号： H02M1/12 , H02M1/15 , H02M1/42 , H02M1/4258 , H02M3/33507 , H02M5/225 , H02M5/4585 , H02M7/4807 , H02M2001/0058 , H02M2001/007 , Y02B70/12 , Y02B70/1491
摘要： A single-phase AC/DC electric power conversion apparatus includes an indirect matrix converter having an input interface to receive a first alternating current (AC) signal and an output interface to produce a second AC signal, where the first AC signal has a grid frequency. A transformer has a primary winding and an electrically isolated and magnetically coupled secondary winding. A coupling inductor is connected in series between the output interface of the indirect matrix converter and the primary winding. An H-bridge switching arrangement is connected to the secondary winding and produces an output signal having a DC component and at least one AC component. The at least one AC component has a second order harmonic of the grid frequency. An active filter reduces the second order harmonic AC component. A modular conversion apparatus for three-phase power replicates the single-phase apparatus as a module for each phase and omits the active filter.
摘要翻译： 单相AC / DC电力转换装置包括具有用于接收第一交流（AC）信号的输入接口和产生第二AC信号的输出接口的间接矩阵转换器，其中第一AC信号具有电网频率 。 变压器具有初级绕组和电隔离和磁耦合次级绕组。 耦合电感串联在间接矩阵转换器的输出接口和初级绕组之间。 H桥开关装置连接到次级绕组，并产生具有DC分量和至少一个AC分量的输出信号。 所述至少一个AC分量具有电网频率的二阶谐波。 有源滤波器减少二次谐波AC分量。 用于三相功率的模块化转换装置将单相装置复制为每相的模块，并省略有源滤波器。
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公开(公告)号：US09520764B1
公开(公告)日：2016-12-13
申请号：US14182277
申请日：2014-02-17
申请人： Ideal Power, Inc.
CPC分类号： H02M5/225 , H02M1/08 , H02M3/1582 , H02M3/33507 , H02M3/33584 , H02M5/293 , H02M5/297 , H02M5/458 , H02M7/4807 , H02M7/797 , H02M2007/4815 , Y02B70/1441
摘要： Methods and systems for bi-directional multi-port power conversion systems and applications are disclosed. In some sample embodiments, current-modulating power converters can be used to provide conversion between synchronous and asynchronous power. In some sample embodiments, current-modulating power converters can perform power conversion can be performed to and from three-phase AC with an active neutral line. In some sample embodiments, current-modulating power converters can convert between synchronous and asynchronous power and also support three-phase AC with active neutral.
摘要翻译： 公开了用于双向多端口功率转换系统和应用的方法和系统。 在一些示例性实施例中，电流调制功率转换器可用于提供同步和异步功率之间的转换。 在一些示例性实施例中，电流调制功率转换器可以执行功率转换，其可以与具有活动中性线的三相AC执行。 在一些示例实施例中，电流调制功率转换器可以在同步和异步电源之间转换，并且还支持具有有效中性点的三相AC。
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