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公开(公告)号：US20190214901A1
公开(公告)日：2019-07-11
申请号：US16242699
申请日：2019-01-08
发明人： Peter On Bon Chan
CPC分类号： H02M1/44 , H02M1/08 , H02M1/12 , H02M1/14 , H02M1/143 , H02M1/15 , H02M1/4225 , H02M3/158 , H02M3/1582 , H02M2001/0009 , H02M2001/123
摘要： An auxiliary converter circuit for regulating an input current to a main switching converter circuit. The auxiliary converter circuit has a voltage detector for determining a change in a voltage across the auxiliary converter circuit, and a current sensor for sensing an input current to the main switching converter circuit. The auxiliary converter circuit also has a current compensation circuit that includes a comparator circuit arranged to compare the sensed input current with a reference current; and a controlled current circuit. The controlled current circuit is arranged to selectively provide a positive compensation current and a negative compensation current to the input current, based on the determined voltage change and the comparison, for suppressing harmonic distortion and electromagnetic interference in the input current.
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公开(公告)号：US20190081555A1
公开(公告)日：2019-03-14
申请号：US16078055
申请日：2016-11-08
发明人： Jia LI , Keisuke FUKUMASU , Yuji SOBU , Hiroki FUNATO
CPC分类号： H02M1/44 , B60L1/00 , B60L3/003 , B60L2210/10 , H02M1/126 , H02M3/00 , H02M3/33507 , H02M7/003 , H02M2001/123
摘要： An electric circuit device includes a noise generating circuit unit which generates noises, a housing which stores the noise generating circuit unit thereinside, is electrically earthed, and includes an opening, a control board which is provided with a connector to connect a wiring to an outside, a base plate which is disposed between the noise generating circuit unit and the control board to cover the opening of the housing, and a high impedance component which has impedance higher than the base plate against the noises. The base plate includes a first base plate which supports the control board, and a second base plate which is separated from the first base plate. The first base plate and the second base plate are disposed to interpose the high impedance component therebetween.
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公开(公告)号：US20180205314A1
公开(公告)日：2018-07-19
申请号：US15743054
申请日：2016-06-23
CPC分类号： H02M1/44 , H02M1/126 , H02M1/143 , H02M1/15 , H02M7/5387 , H02M2001/0058 , H02M2001/123 , H02M2007/4811 , H03K17/133 , H05K3/0061 , H05K7/209 , H05K7/20909
摘要： The present invention relates to a single phase, non-insulated, miniaturized DC/AC power inverter having an output power density higher than 3000 W/dm3, wherein said power inverter is packaged in a casing made of an external electrically conductive enclosure containing a fan blowing in an axial direction to a side face of the casing and, in a stacked elevation arrangement, successively from a bottom side to a top side, a layer of active filter capacitors, a heatsink, a layer of wideband semiconductors switches connected to a PCB with thermal vias and a layer of active filtering inductors, the fan and the component stacked arrangement being designed so as, in operation, the external temperature of the casing does not overcome 60° C. in any point, for an ambient temperature of maximum 30° C. under a maximum load of 2 kVA.
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公开(公告)号：US20180198362A1
公开(公告)日：2018-07-12
申请号：US15032379
申请日：2015-04-29
发明人： Magnus KARLSSON , Andreas LARSSON , Oscar PERSSON
CPC分类号： H02M1/15 , H02M1/143 , H02M2001/123
摘要： A controller for controlling an output voltage of a switched mode power supply (SMPS) comprising a sampling module arranged to sample a signal indicative of the output voltage of the SMPS at a frequency higher than a switching frequency of the SMPS, and a filter module arranged to filter out a ripple component of the sampled signal, comprising: a ripple component estimation module arranged to estimate the ripple component by calculating, for each sample of a plurality of the samples of the signal, an average sample value using the sample value and sample values obtained at corresponding points in preceding switching periods of the SMPS, the sample at each of said corresponding points being separated from said sample of the plurality of samples by a respective integer number of switching periods of the SMPS. The controller further comprises a subtraction module arranged to subtract the estimated ripple component from the sampled signal to generate a filtered signal, and a switching control module arranged to generate a control signal for controlling at least one of the switching frequency and a switching duty cycle of the SMPS based on the filtered signal.
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公开(公告)号：US20180145607A1
公开(公告)日：2018-05-24
申请号：US15358590
申请日：2016-11-22
CPC分类号： H02M7/487 , H02M1/32 , H02M2001/123 , H02M2007/53876
摘要： A system and methods for active voltage balance of capacitors connected to a DC power source and to a three-phase three-level inverter, implemented by a controller comprising a space vector diagram is disclosed.
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公开(公告)号：US20180103142A1
公开(公告)日：2018-04-12
申请号：US15726849
申请日：2017-10-06
CPC分类号： H04M1/74 , H01F17/00 , H01F27/28 , H01F27/38 , H01F2017/0093 , H02M1/12 , H02M3/33507 , H02M2001/123 , H04M2201/80 , H04N1/0001 , H04N1/00082 , H04N1/00994
摘要： An image forming apparatus may have the followings. A switching transformer has a first coil, a second coil, and a first core. The switching transformer generates a secondary side current in the second coil by a magnetic flux generated in the first core by a current that flows in the first coil. A common mode choke coil has a third coil, a fourth coil, and a second core. The common mode choke coil reduces a common mode noise. The switching transformer and the common mode choke coil are mounted on a substrate so that a direction of the magnetic flux generated in the first core and a direction of a magnetic flux generated in the second core are perpendicular.
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公开(公告)号：US09929668B1
公开(公告)日：2018-03-27
申请号：US15669062
申请日：2017-08-04
发明人： Yaow-Ming Chen , Tung Yueh , Terng-Wei Tsai
CPC分类号： H02M5/4585 , G05B15/02 , H02J3/36 , H02J2003/365 , H02M1/08 , H02M1/15 , H02M2001/123
摘要： A power conditioner includes a power converter module, a detector module and a control module. The power converter module performs power conversion upon a three-phase AC power input from a first microgrid based on a PWM output to generate a three-phase AC power output for a second microgrid. The detector module detects the three-phase AC power input, and a first zero sequence current input that is received by the power converter module from the second microgrid. The control module generates the PWM output based at least on a result of the detection, such that the power converter module further receives, from the first microgrid, a second zero sequence current input which is anti-phase with the first zero sequence current input.
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公开(公告)号：US20180083571A1
公开(公告)日：2018-03-22
申请号：US15822716
申请日：2017-11-27
发明人： Yunyan XU , Yongbing GAO
CPC分类号： H02S40/38 , G05F1/67 , H02J3/383 , H02J7/35 , H02M7/493 , H02M7/797 , H02M2001/123 , H02S40/30 , H02S40/32 , H02S50/00 , H02S50/10
摘要： The present invention relates to the photoelectric field, and provides a power supply system and a power supply method, so as to reduce costs of a lead between a positive electrode or a negative electrode of a photovoltaic panel and a direct current voltage source. The power supply system includes: a photovoltaic panel string, an inverter connected to the photovoltaic panel string, and a transformer connected to the inverter. The power supply system further includes a voltage controller. The voltage controller includes a first terminal, a second terminal, and a third terminal. The voltage controller further includes: a first sampling unit, a control unit connected to the first sampling unit, and an inverter unit.
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公开(公告)号：US20180048229A1
公开(公告)日：2018-02-15
申请号：US15784326
申请日：2017-10-16
申请人： OMRON Corporation
发明人： Shingo NAGAOKA , Hiroyuki ONISHI , Takeo NISHIKAWA
CPC分类号： H02M3/155 , H01L23/34 , H02M1/12 , H02M1/32 , H02M1/4258 , H02M3/33592 , H02M5/293 , H02M7/003 , H02M7/217 , H02M2001/0006 , H02M2001/123 , H02M2007/4835 , H05K7/20
摘要： Provided is a power converter which is applied to a power converter equipped with a switching element provided on a line, and a radiator connected to a predetermined potential such as a ground potential. A noise eliminator in which a conductive member is covered with insulator is provided between the switching element (semiconductor switch) and the radiator (heatsink). A conductive member of the noise eliminator is connected to a stable potential.
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公开(公告)号：US20170353125A1
公开(公告)日：2017-12-07
申请号：US15685007
申请日：2017-08-24
CPC分类号： H02M7/217 , H02M3/158 , H02M3/28 , H02M2001/123 , Y02B70/1425 , Y02B70/1441
摘要： A method and device for providing isolated power transfer to a low-power load across a capacitor of a series resonance circuit are shown. The method includes comparing an output voltage received via a feedback loop with a desired output voltage. Responsive to determining that the output voltage is not equal to the desired output voltage, the method determines a sub-harmonic order of the resonant frequency of the series resonance circuit to use as a switching frequency and switches the series resonance circuit at substantially the determined subharmonic order of the resonant frequency.
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