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1. 发明公开

EP2779401A2 DC Power Supply 有权
标题翻译：直流电源
公开(公告)号：EP2779401A2
公开(公告)日：2014-09-17
申请号：EP14152806.7
申请日：2014-01-28
申请人： Hitachi, Ltd. , Hitachi Mito Engineering Co., Ltd.
发明人： Kojima, Tetsuo , Shinomiya, Takeshi , Kawamoto, Takehiro , Muraoka, Kazufumi , Sugiura, Tetsu
IPC分类号： H02M3/335 , H02M1/08
CPC分类号： H02M1/08 , H02M3/335
摘要： Disclosed is a DC-DC converter using an insulating transformer, the converter including means that reduces/mitigates electromagnetic noise due to voltage/current harmonics, without magnetically saturating the insulating transformer.
In order to realize the above, a DC power supply of this invention is constructed so that a pulse turn-on duration in an output voltage waveform of a DC-AC power conversion circuit is controlled to a value corresponding to a DC voltage of a DC voltage source, and so that a switching period in the output voltage waveform of the DC-AC power conversion circuit changes in accordance with a predetermined time-series signal.

2. 发明公开

EP2747261A3 Power conversion equipment 审中-公开
标题翻译：电力转换设备
公开(公告)号：EP2747261A3
公开(公告)日：2018-03-21
申请号：EP13196329.0
申请日：2013-12-09
申请人： Hitachi, Ltd. , Hitachi Mito Engineering Co., Ltd.
发明人： Sugiura, Tetsu , Kojima, Tetsuo , Shinomiya, Takeshi , Kawamoto, Takehiro , Muraoka, Kazufumi
IPC分类号： H02M1/12 , H02M1/15 , H02M1/00
摘要： The present invention aims at solving the prior art problem of not being able to suppress electrical vibration effectively due to insufficient control response against input voltage fluctuation in a damping control for suppressing electrical vibration that occurs to an input-side LC filter of a DC-DC converter. The power conversion equipment according to the present invention comprises, as a controller of a DC-DC converter, a subtractor for detecting a first filter capacitor voltage and a DC power supply voltage and subtracting the DC power supply voltage from the filter capacitor voltage, and a high-pass filter for cutting off a DC component from the result of calculation of the subtractor and shifting the phase of an AC component to output a damping control quantity, wherein the damping control quantity is added to a voltage command of the DC-DC converter to suppress the electrical vibration that occurs to an input-side LC filter of the DC-DC converter.
摘要翻译：本发明的目的在于解决现有技术中由于在用于抑制DC-DC的输入侧LC滤波器中发生的电振动的减振控制中对输入电压波动的控制响应不足而无法有效抑制电振动的问题转换器。根据本发明的功率转换设备包括作为DC-DC转换器的控制器的减法器，用于检测第一滤波电容器电压和DC电源电压，并从滤波电容器电压中减去DC电源电压，以及高通滤波器，用于从减法器的计算结果中切除DC分量，并且将AC分量的相位偏移以输出减振控制量，其中减振控制量被加到DC-DC的电压命令上转换器以抑制发生在DC-DC转换器的输入侧LC滤波器上的电振动。

3. 发明公开

EP2717451A2 Resonant DC power supply apparatus and control method thereof 有权
标题翻译： Resonante Gleichstromversorgungsvorrichtung und Steuerverfahrendafür
公开(公告)号：EP2717451A2
公开(公告)日：2014-04-09
申请号：EP13183083.8
申请日：2013-09-05
申请人： Hitachi Ltd. , Hitachi Mito Engineering Co., Ltd.
发明人： Shinomiya, Takeshi , Kojima, Tetsuo , Sugiura, Tetsu , Kawamoto, Takehiro , Muraoka, Kazufumi
IPC分类号： H02M3/335
CPC分类号： H02M3/33576 , H02M1/36 , H02M2001/0058 , Y02B70/1433 , Y02B70/1491
摘要： A DC power supply apparatus further includes a control device (24) for thinning out on-pulses by stopping supplying gate signals to main switching element (Q1 to Q4) and a resonant switching element (16, Qz). This process of thinning out the on-pulses includes a means for determining the number of times of outputting on-pulses on the basis of the circuit constants of a DC-DC converter including a resonant circuit and an input power supply voltage when the voltage of the filter capacitor (19) coupled with the output side, that is, the DC output voltage becomes larger than a DC output voltage command value by a predefined voltage, or when the DC output voltage is smaller than a predefined voltage.
摘要翻译：直流电源装置还包括通过停止向主开关元件（Q1至Q4）提供栅极信号和谐振开关元件（16，Qz）来减少导通脉冲的控制装置（24）。这种使导通脉冲变薄的过程包括用于根据包括谐振电路的DC-DC转换器的电路常数和输入电源电压来确定输出脉冲的次数的装置，当电压与输出侧耦合的滤波电容器（19），即直流输出电压通过预定电压变得大于直流输出电压指令值，或者当直流输出电压小于预定电压时。

4. 发明授权

EP2747261B1 Power conversion equipment 有权
公开(公告)号：EP2747261B1
公开(公告)日：2020-02-12
申请号：EP13196329.0
申请日：2013-12-09
申请人： Hitachi, Ltd. , Hitachi Mito Engineering Co., Ltd.
发明人： Sugiura, Tetsu , Kojima, Tetsuo , Shinomiya, Takeshi , Kawamoto, Takehiro , Muraoka, Kazufumi
IPC分类号： H02M1/12 , H02M1/15 , H02M1/00

5. 发明授权

EP2814165B1 DC Power Supply 有权
公开(公告)号：EP2814165B1
公开(公告)日：2018-07-04
申请号：EP14152666.5
申请日：2014-01-27
申请人： Hitachi, Ltd. , Hitachi Mito Engineering Co., Ltd.
发明人： Shinomiya, Takeshi , Muraoka, Kazufumi , Kojima, Tetsuo , Kawamoto, Takehiro , Sugiura, Tetsu
IPC分类号： H02M3/335 , H02M1/00
CPC分类号： H02M3/33576 , H02M2001/0058 , Y02B70/1433 , Y02B70/1491
摘要： Noise due to a surge current during turn-on of a resonance switch in a DC-DC converter, and turn-on loss of the resonance switch are reduced. A reactor for suppressing a surge current is provided in a closed circuit formed by a snubber circuit and a resonance circuit, and inductance used for resonance operation is shared between leakage inductance of a transformer and inductance of the surge current suppression reactor. In addition, a ratio of the inductance of the surge current suppression reactor to a sum (resonance inductance) of the leakage inductance of the transformer and the inductance of the surge current suppression reactor is set to ensure that the turn-on loss of the resonance switch is reduced within an allowable operating voltage range of the resonance switch and thus that the surge current is suppressed.

6. 发明公开

EP2717451A3 Resonant DC power supply apparatus and control method thereof 有权
标题翻译：谐振直流电源装置及其控制方法
公开(公告)号：EP2717451A3
公开(公告)日：2016-11-23
申请号：EP13183083.8
申请日：2013-09-05
申请人： Hitachi, Ltd. , Hitachi Mito Engineering Co., Ltd.
发明人： Shinomiya, Takeshi , Kojima, Tetsuo , Sugiura, Tetsu , Kawamoto, Takehiro , Muraoka, Kazufumi
IPC分类号： H02M3/335 , H02M1/36
CPC分类号： H02M3/33576 , H02M1/36 , H02M2001/0058 , Y02B70/1433 , Y02B70/1491
摘要： A DC power supply apparatus further includes a control device (24) for thinning out on-pulses by stopping supplying gate signals to main switching element (Q1 to Q4) and a resonant switching element (16, Qz). This process of thinning out the on-pulses includes a means for determining the number of times of outputting on-pulses on the basis of the circuit constants of a DC-DC converter including a resonant circuit and an input power supply voltage when the voltage of the filter capacitor (19) coupled with the output side, that is, the DC output voltage becomes larger than a DC output voltage command value by a predefined voltage, or when the DC output voltage is smaller than a predefined voltage.

7. 发明公开

EP2814165A2 DC Power Supply 有权
标题翻译： Gleichstromversorgung
公开(公告)号：EP2814165A2
公开(公告)日：2014-12-17
申请号：EP14152666.5
申请日：2014-01-27
申请人： Hitachi, Ltd. , Hitachi Mito Engineering Co., Ltd.
发明人： Shinomiya, Takeshi , Muraoka, Kazufumi , Kojima, Tetsuo , Kawamoto, Takehiro , Sugiura, Tetsu
IPC分类号： H02M7/48
CPC分类号： H02M3/33576 , H02M2001/0058 , Y02B70/1433 , Y02B70/1491
摘要： Noise due to a surge current during turn-on of a resonance switch in a DC-DC converter, and turn-on loss of the resonance switch are reduced.
A reactor for suppressing a surge current is provided in a closed circuit formed by a snubber circuit and a resonance circuit, and inductance used for resonance operation is shared between leakage inductance of a transformer and inductance of the surge current suppression reactor. In addition, a ratio of the inductance of the surge current suppression reactor to a sum (resonance inductance) of the leakage inductance of the transformer and the inductance of the surge current suppression reactor is set to ensure that the turn-on loss of the resonance switch is reduced within an allowable operating voltage range of the resonance switch and thus that the surge current is suppressed.
摘要翻译：由于DC-DC转换器中的谐振开关导通时的浪涌电流引起的噪声以及谐振开关的导通损耗降低。在由缓冲电路和谐振电路形成的闭合电路中提供用于抑制浪涌电流的电抗器，并且用于谐振操作的电感在变压器的漏电感和浪涌电流抑制电抗器的电感之间共享。此外，设置浪涌电流抑制电抗器的电感与变压器的漏感和谐波电感之和（谐振电感）与浪涌电流抑制电抗器的电感之比，以确保谐振的导通损耗开关在谐振开关的允许工作电压范围内减小，从而抑制浪涌电流。

8. 发明授权

EP2717451B1 Resonant DC power supply apparatus and control method thereof 有权
公开(公告)号：EP2717451B1
公开(公告)日：2019-03-06
申请号：EP13183083.8
申请日：2013-09-05
申请人： Hitachi, Ltd. , Hitachi Mito Engineering Co., Ltd.
发明人： Shinomiya, Takeshi , Kojima, Tetsuo , Sugiura, Tetsu , Kawamoto, Takehiro , Muraoka, Kazufumi
IPC分类号： H02M3/335 , H02M1/36

9. 发明授权

EP2779401B1 DC Power Supply 有权
公开(公告)号：EP2779401B1
公开(公告)日：2017-08-16
申请号：EP14152806.7
申请日：2014-01-28
申请人： Hitachi, Ltd. , Hitachi Mito Engineering Co., Ltd.
发明人： Kojima, Tetsuo , Shinomiya, Takeshi , Kawamoto, Takehiro , Muraoka, Kazufumi , Sugiura, Tetsu
IPC分类号： H02M3/335 , H02M1/08
CPC分类号： H02M1/08 , H02M3/335

10. 发明公开

EP2779401A3 DC Power Supply 有权
标题翻译：直流电源
公开(公告)号：EP2779401A3
公开(公告)日：2015-10-21
申请号：EP14152806.7
申请日：2014-01-28
申请人： Hitachi, Ltd. , Hitachi Mito Engineering Co., Ltd.
发明人： Kojima, Tetsuo , Shinomiya, Takeshi , Kawamoto, Takehiro , Muraoka, Kazufumi , Sugiura, Tetsu
IPC分类号： H02M3/335 , H02M1/08
CPC分类号： H02M1/08 , H02M3/335
摘要： Disclosed is a DC-DC converter using an insulating transformer, the converter including means that reduces/mitigates electromagnetic noise due to voltage/current harmonics, without magnetically saturating the insulating transformer.
In order to realize the above, a DC power supply of this invention is constructed so that a pulse turn-on duration in an output voltage waveform of a DC-AC power conversion circuit is controlled to a value corresponding to a DC voltage of a DC voltage source, and so that a switching period in the output voltage waveform of the DC-AC power conversion circuit changes in accordance with a predetermined time-series signal.
摘要翻译：公开了一种使用绝缘变压器的DC-DC变换器，该变换器包括减少/减轻由电压/电流谐波引起的电磁噪声的装置，而不使磁饱和绝缘变压器。为了实现上述目的，本发明的DC电源被构造成使得DC-AC电力转换电路的输出电压波形中的脉冲导通持续时间被控制为与DC的DC电压相对应的值并且使得DC-AC电力转换电路的输出电压波形中的开关周期根据预定的时间序列信号而改变。

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