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1. 发明专利

JP2014036072A Power conversion apparatus 有权
标题翻译：功率转换装置
公开(公告)号：JP2014036072A
公开(公告)日：2014-02-24
申请号：JP2012175571
申请日：2012-08-08
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： KOMINAMI TSUTOMU , KUNIHIRO MASAMITSU , ISHIKAWA KATSUMI , YASUDA YOSUKE , FUNAKOSHI SAHO
IPC分类号： H01L23/36 , H01L23/467
CPC分类号： H01L23/36 , H01L2924/0002 , H05K7/2089 , H01L2924/00
摘要： PROBLEM TO BE SOLVED: To provide a power conversion apparatus in which the direction of a coolant flowing into a cooler changes depending on operation conditions, the power conversion apparatus capable of equalizing cooling performance on windward and leeward sides irrespective of the direction of advance.SOLUTION: Provided is a power conversion apparatus comprising a plurality of semiconductor elements constituting a power conversion circuit, a base part 5 having a plurality of semiconductor elements attached thereto, and a radiation fin for radiating heat generated from the semiconductor elements to the outside, in which the flow direction of a coolant flowing into the radiation fin changes depending on operation conditions of the power conversion circuit, the power conversion apparatus being characterized in that the shape of the radiation fin changes according to the flow direction of the coolant, so that a passage cross section on the outflow side becomes smaller than a passage cross section on the inflow side of the coolant in the radiation fin.
摘要翻译：要解决的问题：提供一种电力转换装置，其中流入冷却器的冷却剂的方向根据操作条件而变化，该功率转换装置能够使上风侧和下风侧的冷却性能均等，而与前进方向无关。提供了一种功率转换装置，其包括构成功率转换电路的多个半导体元件，安装有多个半导体元件的基座部5和用于将从半导体元件发出的热量散发到外部的散热片，其中流入辐射翅片的冷却剂的流动方向根据功率转换电路的操作条件而变化，该功率转换装置的特征在于，散热片的形状根据冷却剂的流动方向而变化，流出侧的横截面变得小于通道cr 在散热片中的冷却剂流入侧的部分。

2. 发明专利

JP2012075210A Dc power supply unit 有权
标题翻译：直流电源单元
公开(公告)号：JP2012075210A
公开(公告)日：2012-04-12
申请号：JP2010216333
申请日：2010-09-28
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： NOZAKI YUICHIRO , HORIE SATORU , KOMINAMI TSUTOMU
IPC分类号： H02M3/28
摘要： PROBLEM TO BE SOLVED: To provide a DC power supply unit with input and output electrically insulated by a transformer, capable of achieving high-frequency operation of a semiconductor switch by attaching an auxiliary circuit for suppressing switching loss.SOLUTION: The DC power supply unit is formed by connecting a DC power supply 101 with a primary winding of a transformer T through a semiconductor switch and connecting a secondary winding of the transformer with a smoothing circuit 102 having a parallel circuit composed of an inductance Ld and a capacitor FC through rectifying diodes D5-D8 to supply electric power from the capacitor FC to a load RL. A parallel circuit of a diode and the semiconductor switch is connected with a resonance circuit 103 composed of a resonance inductance Lz and a capacitor Cz controllable with a semiconductor switch Qz connected with the parallel circuit in series, on the DC output side of the rectifying diodes D5-D8.
摘要翻译：要解决的问题：为了提供具有由变压器电绝缘的输入和输出的直流电源单元，能够通过附加用于抑制开关损耗的辅助电路来实现半导体开关的高频操作。
解决方案：直流电源单元是通过半导体开关将直流电源101与变压器T的初级绕组连接而形成的，并且将变压器的次级绕组与平滑电路102连接，该平滑电路102具有由电感Ld和电容器FC，通过整流二极管D5-D8将电力从电容器FC提供给负载RL。二极管和半导体开关的并联电路与由谐振电感Lz和电容器Cz组成的谐振电路103连接，谐振电路103和电容器Cz可由串联连接到并联电路的半导体开关Qz控制，在整流二极管的直流输出侧 D5-D8。版权所有（C）2012，JPO＆INPIT

3. 发明专利

JP2011258848A Capacitor 审中-公开
标题翻译：电容器
公开(公告)号：JP2011258848A
公开(公告)日：2011-12-22
申请号：JP2010133505
申请日：2010-06-11
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： KOMINAMI TSUTOMU , AYANO HIDEKI , KUNIHIRO MASAMITSU , ISHIKAWA KATSUMI
IPC分类号： H01G4/38
摘要： PROBLEM TO BE SOLVED: To reduce inductance of a capacitor device and equalize the distribution of current flowing through each capacitor element.SOLUTION: The capacitor has a first capacitor element and a second capacitor element arranged so that polarities of the first capacitor element and the second capacitor element are opposed to each other. A conductor connecting to a positive electrode of the first capacitor element is placed adjacent to a conductor connecting to a negative electrode of the second capacitor element. A conductor connecting to a negative electrode of the first capacitor element is placed adjacent to a conductor connecting to a positive electrode of the second capacitor element. Each conductor is pulled out to the outside of the case to serve as a connection terminal of an external circuit.
摘要翻译：要解决的问题：减少电容器器件的电感并均衡流过每个电容器元件的电流分布。解决方案：电容器具有第一电容器元件和第二电容器元件，其布置成使得第一电容器元件和第二电容器元件的极性彼此相对。连接到第一电容器元件的正电极的导体被放置成与连接到第二电容器元件的负极的导体相邻。连接到第一电容器元件的负电极的导体被放置成与连接到第二电容器元件的正电极的导体相邻。每个导体被拉出到壳体的外部，用作外部电路的连接端子。版权所有（C）2012，JPO＆INPIT

4. 发明专利

JP2011211886A Dc power supply, power converter 有权
标题翻译：直流电源，电源转换器
公开(公告)号：JP2011211886A
公开(公告)日：2011-10-20
申请号：JP2010240251
申请日：2010-10-27
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： KOMINAMI TSUTOMU , ONDA KENICHI , ISHIKAWA KATSUMI , KONO YASUHIKO , KOJIMA TETSUO , NAGASU MASAHIRO
IPC分类号： H02M3/28 , B60R16/03
摘要： PROBLEM TO BE SOLVED: To suppress a switching loss of a semiconductor switch, to simplify a semiconductor cooling mechanism, and to increase an upper limit value of permissible switching frequency in a DC power supply.SOLUTION: The DC power supply 1 and a primary winding of a transformer 2 are connected through the semiconductor switch. A secondary winding of the transformer and a smoothing filter consisting of a reactor Lo and a capacitor Co are connected through a rectifying diode bridge D5-D8. A resonance circuit constituted of a capacitor to be charged by resonance with a leakage inductance of the transformer, or an inductor connected to the secondary winding in series, when one side of the secondary winding of the transformer is positive polarity in a circuit for generating a DC power supply, and a parallel circuit of a semiconductor switch and a diode connected to the capacitor in series, is arranged in the secondary side of the transformer. In the DC power supply, when the another side of the secondary winding of the transformer becomes positive polarity, the capacitor can be discharged.
摘要翻译：要解决的问题：为了抑制半导体开关的开关损耗，简化半导体冷却机构，并增加直流电源中允许的开关频率的上限值。解决方案：直流电源1和初级绕组的变压器2通过半导体开关连接。变压器的次级绕组和由电抗器Lo和电容器Co组成的平滑滤波器通过整流二极管电桥D5-D8连接。一种谐振电路，由在变压器的漏电感中谐振而被充电的电容器或与次级绕组串联连接的电感器构成的谐振电路，当在变压器的次级绕组的一侧为正极时，直流电源，以及串联连接到电容器的半导体开关和二极管的并联电路设置在变压器的次级侧。在直流电源中，当变压器次级绕组的另一侧变为正极时，电容可以放电。

5. 发明专利

JP2013193486A Power conversion apparatus for railway vehicle and cooler for power conversion apparatus 有权
标题翻译：用于电力转换装置的铁路车辆和冷却器的电力转换装置
公开(公告)号：JP2013193486A
公开(公告)日：2013-09-30
申请号：JP2012059631
申请日：2012-03-16
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： YASUDA YOSUKE , FUNAKOSHI SAHO , NISHIHARA ATSUO , ISHIKAWA KATSUMI , KOMINAMI TSUTOMU , KUNIHIRO MAMI
IPC分类号： B61C17/00 , B61C17/12 , H01L23/467 , H05K7/20
CPC分类号： H01L2924/0002 , H01L2924/00
摘要： PROBLEM TO BE SOLVED: To provide a power conversion apparatus for a railway vehicle with a cooler capable of efficiently cooling a semiconductor device even in any case of a vehicle traveling or a vehicle stop.SOLUTION: A power conversion apparatus for a railway vehicle includes: a plurality of semiconductor devices constituting a power conversion circuit; a casing packaging the power conversion circuit therein; and a cooler which radiates heat from the semiconductor devices into outside air, and is mounted under the floor of a compartment of the railway vehicle. The cooler includes: a base in which the plurality of semiconductor devices are mounted on one side; and a heat radiating fin which is mounted to another side of the base for radiating heat generated from the plurality of semiconductor devices into the outside air. The heat radiating fin is installed while being exposed in the outside air and ventilation ducts formed from plates are provided in a vehicle traveling direction and a perpendicular direction.
摘要翻译：要解决的问题：提供一种具有能够有效地冷却半导体器件的冷却器的铁路车辆的电力转换装置，即使在车辆行驶或车辆停止的情况下也是如此。解决方案：一种用于铁路车辆的电力转换装置，包括：构成功率转换电路的多个半导体器件; 在其中包装电力转换电路的壳体; 以及将半导体器件的热量散发到外部空气中的冷却器，并且安装在铁路车辆的隔室的地板下方。冷却器包括：多个半导体器件在其一侧安装的基座; 以及散热片，其安装在所述基座的另一侧，用于将从所述多个半导体器件产生的热量散发到外部空气中。散热翅片在外部空气中露出时被安装，并且在车辆行进方向和垂直方向上设置由板形成的通风管道。

6. 发明专利

JP2017118616A 電力変換器审中-公开
公开(公告)号：JP2017118616A
公开(公告)日：2017-06-29
申请号：JP2015249221
申请日：2015-12-22
申请人：株式会社日立製作所 , Hitachi Ltd
发明人： KOMINAMI TSUTOMU , KIKUCHI TERU
IPC分类号： H02M1/00 , H01L23/427
摘要：【課題】電力変換器の運転状況に対し、半導体素子のサーマルサイクル耐量を向上させ、半導体素子の信頼性を向上させること、および、半導体素子を冷却する冷却器の信頼性を向上させることを目的とする。【解決手段】電力変換器において、電力変換器は半導体素子および半導体素子を冷却する冷却器を有し、電力変換器は起動または停止を繰り返すものであり、電力変換器が停止してから起動するまでの時間に応じて前記冷却器の動作条件を変更することを特徴とする電力変換器。【選択図】図3

7. 发明专利

JP2013141373A Power conversion device 有权
标题翻译：电源转换器件
公开(公告)号：JP2013141373A
公开(公告)日：2013-07-18
申请号：JP2012000978
申请日：2012-01-06
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： KOMINAMI TSUTOMU , KUNIHIRO MASAMITSU , ISHIKAWA KATSUMI
IPC分类号： H02M7/48
CPC分类号： H02M7/003
摘要： PROBLEM TO BE SOLVED: To provide a power conversion device that implements a low inductance of a main circuit connecting switching power semiconductor elements and smoothing capacitors 8, and implements a compact size owing to an improved current balance between parallel circuits of switching power semiconductor elements in each phase.SOLUTION: For example, three semiconductor module units 5 each having two switching elements connected in series and having a positive terminal, a negative terminal and an AC terminal are internally connected in parallel to form a single phase semiconductor module 50, and a smoothing capacitor unit 8 is abutted against each semiconductor module unit 5 with their terminals 2, 3 and 6, 7 opposed, and fastened directly with a bolt and a nut through a screwing bore 11 to form a single phase. Three sets of them are used to constitute a three-phase, U-W-phase power conversion device.
摘要翻译：要解决的问题：提供一种电源转换装置，其实现连接开关功率半导体元件和平滑电容器8的主电路的低电感，并且由于开关功率半导体元件的并联电路之间的电流平衡改善而实现了紧凑的尺寸各相。例如，具有并联连接并具有正极端子，负极端子和AC端子的两个开关元件的三个半导体模块单元5并联内部连接以形成单相半导体模块50，并且平滑电容器单元8与它们的端子2,3和6,7相对的每个半导体模块单元5抵接，并且通过螺纹孔11直接用螺栓和螺母紧固以形成单相。三组U-W相电力转换装置组成三组。

8. 发明专利

JP2013090342A Power conversion apparatus 有权
标题翻译：功率转换装置
公开(公告)号：JP2013090342A
公开(公告)日：2013-05-13
申请号：JP2011225440
申请日：2011-10-13
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： KUNIHIRO MASAMITSU , AYANO HIDEKI , KOMINAMI TSUTOMU , ISHIKAWA KATSUMI , INOUE SHIGENORI , YONEKAWA TERU
IPC分类号： H02M7/48 , H01L25/07 , H01L25/18
CPC分类号： Y02B70/1483
摘要： PROBLEM TO BE SOLVED: To provide a power conversion apparatus which can reduce main circuit inductance and also includes the form of a conductor which assumes high resistivity in a frequency band in which current pulsation occurs.SOLUTION: In a main circuit wiring of a power conversion apparatus, a conductor for conducting a cathode side current, an insulation sheet, and a conductor for conducting an anode side current are laminated one on another and bonded together, the paths for currents flowing in each conductor being opposed to each other. Among surfaces of the laminated conductors, the main circuit wiring uses for faces on the other conductor side a component which has higher resistivity in a high frequency band than inside the conductors to achieve the above objective.
摘要翻译：要解决的问题：提供一种能够降低主电路电感的电力转换装置，还包括在发生电流脉动的频带中呈现高电阻率的导体的形式。解决方案：在功率转换装置的主电路布线中，将用于导电阴极侧电流的导体，绝缘片和用于导电阳极侧电流的导体层叠在一起，并将其粘合在一起，在每个导体中流动的电流彼此相对。在层叠导体的表面中，主电路布线在另一导体侧的面上使用在高频带内比在导体内具有更高电阻率的部件，以实现上述目的。版权所有（C）2013，JPO＆INPIT

9. 发明专利

JP2012010490A Power converter and temperature rise computation method for the same 有权
标题翻译：功率转换器和温度上升计算方法
公开(公告)号：JP2012010490A
公开(公告)日：2012-01-12
申请号：JP2010144418
申请日：2010-06-25
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： AYANO HIDEKI , ISHIKAWA KATSUMI , OGAWA KAZUTOSHI , KOMINAMI TSUTOMU , KUNIHIRO MASAMITSU
IPC分类号： H02M7/48 , H02P27/06
CPC分类号： H02P29/0088 , H02M1/32 , H02M7/5387 , H02M2001/327 , H02P21/06 , H02P29/68
摘要： PROBLEM TO BE SOLVED: To provide a very simple method for estimating a temperature rise of a semiconductor switching device constituting a power converter such as an inverter, and evaluating degradation and remaining life thereof.SOLUTION: In a heating value operation part 12 in a processing unit 3, computation of a chip loss is carried out using current command values Id*, Iq* and voltage command values vu*, vv*, and vw*. First, current values iu*, iv* and iw* of each output phase are estimated from the current command values. An on/off loss of the chip is expressed by a function of current estimation values which flow in each output phases, which is integrated with a PWM carrier frequency f to make possible the loss to be derived.As for a conduction loss, a conduction time is needed to integrated to the current estimation values and saturation voltages which are a function thereof, and the conduction time is computed from a relation between a carrier amplitude and the voltage command values for every control period fsw of the switching device. By adding an air temperature sensor, an absolute temperature computation is carried out.
摘要翻译：要解决的问题：提供用于估计构成诸如逆变器的功率转换器的半导体开关器件的温度升高并且评估其劣化和剩余寿命的非常简单的方法。解决方案：在处理单元3中的加热值操作部分12中，使用电流指令值Id *，Iq *和电压指令值vu *，vv *和vw *来执行芯片损耗的计算。首先，根据当前命令值估计每个输出相位的当前值iu *，iv *和iw *。芯片的开/关损耗由在每个输出相中流动的当前估计值的函数表示，其与PWM载波频率f集成以使得可能导致损耗。对于导通损耗，传导需要时间来集成到作为其功能的当前估计值和饱和电压，并且根据开关装置的每个控制周期fsw的载波振幅和电压指令值之间的关系来计算导通时间。通过添加空气温度传感器，进行绝对温度计算。版权所有（C）2012，JPO＆INPIT

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