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1.发明公开BIDIRECTIONAL SWITCH CIRCUIT AND POWER CONVERTER PROVIDED WITH SAME 审中-公开BIDIREKTIONALER SCHALTKREIS UND LEISTUNGSUMWANDLER DAMIT
公开(公告)号：EP2381567A1
公开(公告)日：2011-10-26
申请号：EP10731169.8
申请日：2010-01-18
发明人： KAWASHIMA, Reiji , HISAYAMA, Kazushi , HIBINO, Hiroshi , SEKIMOTO, Morimitsu , MAEDA, Toshiyuki , MATSUNO, Sumikazu
IPC分类号： H02M1/08
CPC分类号： H02M1/4208 , H02M3/33576 , H02M5/458 , H03K17/664 , H03K17/6874 , H03K17/74 , H03K2217/0009 , H03K2217/0081 , Y02B70/126
摘要： A bidirectional switch circuit includes two switching elements (SW1, SW2) connected to conduct a current in both directions. The two switching elements (SW1, SW2) are connected in series to each other. Of the two switching elements (SW1, SW2), the switching element (SW1) to which a reverse voltage is applied, a voltage of a source (S1) of one of the switching elements (SW1, SW2) being higher than a voltage of a drain (D) of the one, is configured to conduct a current from the source (S1) to the drain (D) even when an on-drive signal is not being input to a gate terminal (G1) of the one.
摘要翻译： 双向开关电路包括两个开关元件（SW1，SW2），其连接以在两个方向上传导电流。 两个开关元件（SW1，SW2）彼此串联连接。 在两个开关元件（SW1，SW2）中，施加有反向电压的开关元件（SW1），开关元件（SW1，SW2）中的一个的源极（S1）的电压高于 即使在未将驱动信号输入到该栅极端子（G1）的情况下，该漏极（D）被配置为将来自源极（S1）的电流传导到漏极（D）。
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2.发明公开
公开(公告)号：EP4412075A1
公开(公告)日：2024-08-07
申请号：EP22876558.2
申请日：2022-09-30
摘要： [Problem] To suppress the disadvantage that occurs with regard to the flow of a compensation current when a voltage of a power source of a noise canceller is lower than a DC link voltage of a power converter.
[Solving means] A noise reduction circuitry includes a noise canceller that injects a compensation current into a power line or an earth to reduce a common mode noise current flowing to an alternating-current power source from a power converter including a switching element connected to the alternating-current power source through the power line and the earth, and a direct-current power source that supplies power to the noise canceller, and a voltage Vcc of the direct-current power source is less than 2/3 of a peak value of a DC link voltage of the power converter, and when a connection point between the power line and a path connecting the power line and the earth via the noise canceller is a first connection point, and a connection point between the path and the earth is a second connection point, when the compensated common mode noise current whose positive direction is a direction of flow from the alternating-current power source side to the first connection point and flowing through the power line on a side closer to the alternating-current power source than the first connection point is Ig(t), when the compensation current whose positive direction is a direction of flow from the alternating-current power source side to the first connection point and flowing through the path is Io(t), when an impedance of the path is Z 1, when an impedance on a side closer to the alternating-current power source than the first connection point and the second connection point is Z2, and when V(t) = 2 * (Z1 * Io(t) - Z2 * Ig(t)), the voltage Vcc is set to be a maximum value of a quasi-peak value of V(t) or √2 times or more an effective value of V(t).-
公开(公告)号：EP4224652A1
公开(公告)日：2023-08-09
申请号：EP21875337.4
申请日：2021-09-21
摘要： [Object] As compared with the case where a device supplies power to an electric line regardless of an index regarding the capacity of power in an electric path, the device may supply the power to the electric line according to the content of supply suitable for the electric path.
[Solution] A power control system includes an acquisition unit that acquires capacity information on capacity of power in an electric path through which power supplied from a power plant passes before the power is received by a device, and a control unit that performs control on, based on the capacity information, supply of power from the device to an electric line through which the power supplied from the power plant passes before the power is received by the device.-
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：EP2933893A1
公开(公告)日：2015-10-21
申请号：EP13862658.5
申请日：2013-11-25
发明人： KAWASHIMA, Reiji
CPC分类号： F25B43/003 , H02J3/01 , H02M1/12 , H02M1/14 , Y02E40/40
摘要： Provided is technology for improving, in an active filter, impediment to suppression of a harmonic component of power current caused by arithmetic processing performed by a current controller. The current controller (5) performs processing of generating a three-phase voltage command value V* based on output of a difference current generation unit (3A). The current controller (5) achieves the above-mentioned processing, for example, by performing PI (proportional integral) control, so that a delay time ta occurs. If a deviation Ie is obtained from a command value Ic* and compensating current Ic, the time ta causes a difference between the compensating current Ic and the harmonic component, and becomes an impediment to suppression of the harmonic component of the power current Is. However, by the difference current generating unit (3A) obtaining the deviation Ie from the compensating current Ic and a value Ic*^ obtained by leading a phase of the command value Ic* by a phase corresponding to the time ta, the above-mentioned impediment is eliminated or reduced.
摘要翻译： 提供了一种用于在有源滤波器中改善由电流控制器执行的由算术处理引起的功率电流的谐波分量的抑制的技术。 电流控制器（5）基于差动电流产生单元（3A）的输出进行产生三相电压指令值V *的处理。 电流控制器（5）例如通过执行PI（比例积分）控制来实现上述处理，从而发生延迟时间ta。 如果从指令值Ic *和补偿电流Ic获得偏差Ie，则时间ta导致补偿电流Ic和谐波分量之间的差异，并且成为抑制电力电流Is的谐波分量的障碍。 然而，通过差分电流产生单元（3A）从补偿电流Ic获得偏差Ie和通过将指令值Ic *的相位引导到与时间ta相对应的相位而获得的值Ic * ^，上述 障碍消除或减少。
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公开(公告)号：EP2273661A1
公开(公告)日：2011-01-12
申请号：EP09731707.7
申请日：2009-03-16
发明人： KAWASHIMA, Reiji
摘要： A DC voltage is controlled in accordance with a variation of a power source voltage, without the need to detect an effective value of the power source voltage. A PI control section (702) performs a PI control on a deviation (ΔVdc) which is a difference between a DC voltage command (Vdc*) and a DC voltage command (Vdc), and outputs a d-axis current command value (Id*). A PI control section (704) performs a PI control on a deviation (ΔId) which is a difference between the d-axis current command value (Id*) and a d-axis current (Id), and outputs a d-axis voltage command value (Vd*). Based on the d-axis voltage command value (Vd*) and a q-axis voltage command value (Vq*), a PWM control section (709) outputs a switching control signal (G1) for controlling a switching operation of a converter. A voltage command computation section (710) generates the DC voltage command (Vdc*) based on the d-axis voltage command value (Vd*).
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公开(公告)号：EP4412069A1
公开(公告)日：2024-08-07
申请号：EP22876374.4
申请日：2022-09-28
摘要： A power conversion device includes: a power converter using a switching element; and a noise reduction circuit, the noise reduction circuit including: a noise detector configured to detect a common mode noise current or a common mode noise voltage generated in a power line in response to operation of the power converter; an amplifier configured to generate a compensation current based on a detection signal from the noise detector; and an output circuit configured to output the compensation current generated by the amplifier to the power line. A power conversion board carrying the power converter and a canceler board carrying the amplifier are different boards.
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公开(公告)号：EP4224658A1
公开(公告)日：2023-08-09
申请号：EP21875335.8
申请日：2021-09-21
摘要： [Problem] As compared with the case where the apparent power in the electric line on the supply side is adjusted without supplying the current to the electric line closer to the power supply side than the distribution transformer, there is a reduction in the effect of the state in the electric line closer to the power reception side than the distribution transformer on the adjustment of the apparent power in the electric line closer to the power supply side than the distribution transformer.
[Solution] A power control system includes a device that receives power from an electric line of a distribution system via a distribution transformer, an acquisition unit that acquires electric line information on the electric line, and a control unit that causes the device to generate a current used for adjustment of apparent power in the electric line based on the electric line information acquired by the acquisition unit.
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