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公开(公告)号：EP3637601A1
公开(公告)日：2020-04-15
申请号：EP18834566.4
申请日：2018-07-18
发明人： KONO, Masaki , KAWASHIMA, Reiji , FUJITA, Takayuki
摘要： A plurality of active filter devices (41, 42, 43) that each have an output connected to a harmonic-generating load device (2) and are capable of generating a compensating current for performing at least one of reduction of a harmonic current of the harmonic-generating load device (2) and improvement of the power factor of the fundamental wave are provided. The plurality of active filter devices (41, 42, 43) provide two or more types of capacities, and the number and combination of operating active filter devices among the active filter devices (41, 42, 43) change in accordance with the magnitude of the compensating current.
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公开(公告)号：EP3620886A1
公开(公告)日：2020-03-11
申请号：EP18808873.6
申请日：2018-05-30
发明人： KONO, Masaki , KAWASHIMA, Reiji , FUJITA, Takayuki
摘要： A controller (43,47,52,62) performs a first control for controlling the power source power factor or a power source harmonic of the harmonic current such that an input power factor of at least one of a plurality of connection devices (41,42) changes in a direction preceding the power source power factor in a case where the power source power factor changes in a lagging direction, and performs a second control for controlling the power source power factor or the power source harmonic such that the input power factor of at least one of the connection devices (41,42) changes in a direction lagging behind the power source power factor in a case where the power source power factor changes in a leading direction.
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公开(公告)号：EP3511797A1
公开(公告)日：2019-07-17
申请号：EP17855361.6
申请日：2017-07-11
摘要： A current source (30) capable of generating a current of a first compensation portion (i1) for either or both reducing a harmonic current in an air conditioner (10) or improving a fundamental power factor in the air conditioner (10) is provided. If an excess (res) of the current source (30) is larger than a second compensation portion (i2) for either or both reducing a harmonic current in a power receiving path (61) of a distribution board (60) or improving a fundamental power factor in the power receiving path (61) of the distribution board (60), a current obtained through superimposition of a current of a second compensation component (i2) and a current of the first compensation component (i1) is generated in the current source (30).
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公开(公告)号：EP2763301B1
公开(公告)日：2016-12-07
申请号：EP12836508.7
申请日：2012-09-14
发明人： FUJITA, Takayuki
CPC分类号： H02M1/12 , H02M5/22 , H02M5/297 , H02M5/4505 , H02M5/4585
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公开(公告)号：EP2439839B1
公开(公告)日：2020-07-29
申请号：EP10783432.7
申请日：2010-06-03
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公开(公告)号：EP2763301A1
公开(公告)日：2014-08-06
申请号：EP12836508.7
申请日：2012-09-14
发明人： FUJITA, Takayuki
CPC分类号： H02M1/12 , H02M5/22 , H02M5/297 , H02M5/4505 , H02M5/4585
摘要： When an AC voltage is outputted to an inductive load, pulsation of an effective power caused by an odd number-th order harmonic component of a current flowing in this load is reduced. A modulation factor k of an inverter 4 includes a DC component k 0 and an AC component k 6n cos(6n·ω L ·t + ϕ 6n ). The AC component includes a frequency (6ω L /2π) which is a 6n multiple of the fundamental frequency (ω L /2π) of AC voltages Vu, Vu and Vw outputted from the inverter 4. Even when there are not only the 5th order harmonic component of load currents iu, iv and iw but also the 7th order harmonic component, it is possible to adequately set the ratio of the magnitude of the AC component and the ratio of the DC component and reduce pulsation of consumption power caused by these harmonic components. Reducing the pulsation contributes to suppression of power harmonics.
摘要翻译： 当向感性负载输出交流电压时，减少由在该负载中流动的电流的奇数次谐波分量引起的有效功率的脉动。 逆变器4的调制系数k包括DC分量k 0和AC分量k 6n cos（6n·ÉL·t +Õ6n）。 AC分量包括从逆变器4输出的交流电压Vu，Vu和Vw的基频（ÉL / 2 - ）的6n倍的频率（6ÉL / 2 - ）。即使不仅有第五阶 负载电流iu，iv和iw的谐波分量也是7次谐波分量，可以充分地设定交流分量的大小与直流分量的比例，并减少由这些谐波引起的功耗的波动 组件。 减少脉动有助于抑制功率谐波。
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7.发明公开POWER CONVERSION DEVICE AND CONTROL METHOD THEREFOR 审中-公开STEMERWANDLUNGSVORRICHTUNG STEUERUNGSVERFAHRENDAFÜR
公开(公告)号：EP2472708A1
公开(公告)日：2012-07-04
申请号：EP10811410.9
申请日：2010-05-07
CPC分类号： H02M7/219 , H02M2001/0054 , Y02B70/1491
摘要： A converter section (2) includes three pairs of switching elements (Srp, ..., Stn), each pair having two switching elements connected in series between two direct current links (L1, L2), and phases of an input three-phase alternating current are connected to nodes between the series-connected switching elements one by one. Each of the switching elements (Srp, ... , Stn) is made of a transistor having a bipolar structure. The control unit (5) controls the switching elements (Srp, ..., Stn) such that line voltages between a reference phase, which is one of the phases of the input three-phase alternating current, and each of the other phases are output to the two direct current links (L1, L2) on a time division basis. The control unit (5) applies a predetermined gate voltage to one or more of the switching elements (Srp, ... , Stn) to which a reverse bias is applied.
摘要翻译： A转换器部分（2）包括三对开关元件（Srp，...，Stn），每对具有串联连接在两个直流连杆（L1，L2）之间的两个开关元件，以及输入三相 交流电一个一个地连接到串联的开关元件之间的节点。 开关元件（Srp，...，Stn）中的每一个由具有双极结构的晶体管构成。 控制单元（5）控制开关元件（Srp，...，Stn），使得作为输入三相交流电的相位之一的参考相位与其他相位之间的线电压为 以时分方式输出到两个直流链路（L1，L2）。 控制单元（5）对施加了反向偏压的开关元件（Srp，...，Stn）中的一个或多个施加预定的栅极电压。
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