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1. 发明公开

EP3089346A4 POWER CONVERSION DEVICE AND POWER CONVERSION DEVICE CONTROL METHOD 审中-公开
标题翻译： LEISTUNGSUMWANDLUNGSVORRICHUNG UND LEISTUNGSUMWANDLUNGSVORRICHTUNGSTEUERUNGSVERFAHREN
公开(公告)号：EP3089346A4
公开(公告)日：2017-08-23
申请号：EP13900448
申请日：2013-12-27
申请人： HITACHI INDUSTRY EQUIPMENT SYSTEMS CO LTD
发明人： IBORI SATOSHI , SASAKI YASUSHI , TOMIYAMA KIYOTAKA
IPC分类号： H02M7/537 , H02M1/00 , H02M1/08 , H02M5/458 , H02M7/48 , H02M7/5387 , H02P27/06 , H03K17/16
CPC分类号： H02M1/08 , H02M5/458 , H02M7/53871 , H02M2001/0009 , H02M2001/0029 , H02P27/06 , H03K17/166
摘要： The present invention addresses the problems of the increase of leakage current and noise failure induced in a peripheral device, which are attributable to a steep dV/dt because when a power conversion device is configured using a wide-bandgap semiconductor element, the turn-on speed and turn-off speed are extremely fast. A power conversion device comprises: a converter for converting an AC voltage to a DC voltage; a DC intermediate circuit for smoothing the DC voltage converted by the converter; an inverter for converting the DC voltage smoothed by the DC intermediate circuit to an AC voltage; a gate drive circuit for driving a semiconductor switching element in the inverter; a current detector for detecting current flowing through the power conversion device; and a control circuit for detecting each current component value from the current detected by the current detector and for, based on the detected each current component value or the power factor obtained from the each current component value, changing the gate resistance value of the gate drive circuit.
摘要翻译：本发明解决了由于陡峭的dV / dt导致的在外围装置中引起的泄漏电流和噪声故障的增加的问题，因为当使用宽带隙半导体元件配置功率转换装置时，导通速度和关闭速度都非常快。一种功率转换装置，包括：用于将交流电压转换为直流电压的转换器; DC中间电路，用于平滑由转换器转换的DC电压; 逆变器，用于将由DC中间电路平滑的DC电压转换成AC电压; 用于驱动逆变器中的半导体开关元件的栅极驱动电路; 电流检测器，用于检测流过功率转换装置的电流; 以及控制电路，用于根据由电流检测器检测到的电流来检测每个电流分量值，并且基于检测到的每个电流分量值或从每个电流分量值获得的功率因数来改变栅极驱动器的栅极电阻值电路。

2. 发明公开

EP3098962A4 POWER CONVERSION DEVICE 审中-公开
公开(公告)号：EP3098962A4
公开(公告)日：2018-01-17
申请号：EP14879123
申请日：2014-01-20
申请人： HITACHI INDUSTRY EQUIPMENT SYSTEMS CO LTD
发明人： IBORI SATOSHI , HOTTA KAZUSHIGE , ARAO YUSUKE , BABA SHIGEYUKI , TANAKA MAKOTO , NAKAMURA ATSUHIKO
IPC分类号： H02P29/00 , H02M5/458 , H02P6/182 , H02P6/24 , H02P27/06
CPC分类号： H02P6/182 , H02M5/458 , H02P6/24
摘要： A power conversion device that performs variable-speed control of a permanent magnet synchronous electric motor and that is equipped with: a converter; a DC intermediate circuit having a smoothing capacitor; an inverter, which is equipped with upper-arm side semiconductor elements connected to the (+) potential side of the DC intermediate circuit and lower-arm side semiconductor elements connected to the (-) potential side of the DC intermediate circuit, and which converts the DC voltage smoothed by the DC intermediate circuit into AC voltage; and a current detector that detects the current flowing in the inverter. This power conversion device is equipped with a control circuit which, after the output of power from the power conversion device to the permanent magnet synchronous electric motor is stopped, performs a control to turn on one or more of the semiconductor elements on one side, that is, the upper-arm side or the lower-arm side, and turn off all of the semiconductor elements on the other side, that is, the lower-arm side or the upper-arm side, and when a prescribed current is detected by the current detector, the control circuit outputs a signal indicating that the permanent magnet synchronous electric motor is rotating.

3. 发明公开

EP2991217A4 POWER CONVERSION DEVICE 审中-公开
标题翻译： STROMWANDLER
公开(公告)号：EP2991217A4
公开(公告)日：2017-01-04
申请号：EP13882681
申请日：2013-04-26
申请人： HITACHI INDUSTRY EQUIPMENT SYSTEMS CO LTD
发明人： IBORI SATOSHI , TOMITA HIROYUKI , NAKAMURA ATSUHIKO
IPC分类号： H02M7/48 , H02M1/32 , H02M5/458 , H02M7/00 , H02M7/5387
CPC分类号： H02M7/53875 , H02M5/458 , H02M7/003 , H02M2001/327

4. 发明公开

EP2544353A4 INVERTER AND OVERLOAD PROTECTION METHOD 失效
公开(公告)号：EP2544353A4
公开(公告)日：2018-01-24
申请号：EP10847068
申请日：2010-12-20
申请人： HITACHI INDUSTRY EQUIPMENT SYSTEMS CO LTD
发明人： IBORI SATOSHI , NAKAMURA ATSUHIKO , TOMITA HIROYUKI
IPC分类号： H02M7/48 , H02H7/085 , H02H7/122 , H02M1/32 , H02M1/36 , H02M7/5387 , H02P27/06 , H02P29/024 , H02P29/032 , H02P29/60
CPC分类号： H02M1/32 , H02M1/36 , H02M7/53875 , H02P27/06 , H02P29/027 , H02P29/032 , H02P29/60
摘要： Provided are an inverter.and an overload protection method having an accurate electronic thermal heat time limit characteristic in which actual temperature rise and drop of a motor in overload and in normal load are taken into consideration. The inverter includes a power rectifier that converts an alternate current into a direct current, a power inverter that converts the direct current into variable voltage variable frequency AC power, an AC motor that is speed-controlled with the AC power, a current detector that detects an electric current of the AC motor, and a control unit that controls each of the above units in accordance with the electric current detected by the current detector and is characterized in that the control unit has an adding/subtracting unit that electronically performs addition in overload operation of the AC motor and performs subtraction from an integrated value obtained by addition in the overload with a weighted value commensurate with the current squared times time of the electric current detected by the current detector in the overload when the AC motor is not in overload operation, and an electronic thermal heat time limit unit that stops the AC motor in overload operation on the basis of the integrated value in the adding/subtracting unit and a previously set electronic thermal heat time limit characteristic.

5. 发明公开

EP3012958A4 POWER CONVERSION DEVICE 有权转让
标题翻译： STROMWANDLUNGSVORRICHTUNG
公开(公告)号：EP3012958A4
公开(公告)日：2017-02-15
申请号：EP14813134
申请日：2014-01-29
申请人： HITACHI INDUSTRY EQUIPMENT SYSTEMS CO LTD
发明人： HAMANO KOJI , IBORI SATOSHI , HIROTA MASAYUKI , YAMAZAKI TADASHI
IPC分类号： H02M7/48 , H02M1/32 , H02M7/00 , H05K7/14
CPC分类号： H02M7/003 , H02M2001/327 , H05K7/1432 , H05K7/209
摘要： The invention addresses the problem that when a semiconductor module is broken, a flame caused by an abnormal heat generation occurring inside is blown out from, for example, an opening and fire spreads to other components inside a power conversion device, thereby possibly causing a secondary fire spread in the power conversion device. A power conversion device comprises: a power semiconductor; cooling fins for cooling the power semiconductor; a first case disposed between the power semiconductor and the cooling fins and equipped with an opening matching the shape of the power semiconductor; and a second case for covering a lead terminal opening provided on the power semiconductor.
摘要翻译：本发明解决了当半导体模块被破坏时，由内部发生的异常发热引起的火焰从例如开口吹出并且火蔓延到电力转换装置内部的其他部件，从而可能引起二次火灾蔓延在电力转换装置中。电力转换装置包括：功率半导体; 用于冷却功率半导体的散热片; 所述第一壳体设置在所述功率半导体和所述冷却翅片之间，并且配备有与所述功率半导体的形状相匹配的开口; 以及用于覆盖设置在功率半导体上的引线端子开口的第二壳体。

6. 发明公开

EP3093970A4 ELECTRIC POWER CONVERSION DEVICE 有权
标题翻译： STROMWANDLER
公开(公告)号：EP3093970A4
公开(公告)日：2017-08-30
申请号：EP14828118
申请日：2014-01-10
申请人： HITACHI INDUSTRY EQUIPMENT SYSTEMS CO LTD
发明人： IBORI SATOSHI , SASAKI YASUSHI , TOMIYAMA KIYOTAKA
IPC分类号： H02M7/5387 , H02M1/32 , H02M5/458 , H02M7/00
CPC分类号： H02M7/5387 , H02M1/32 , H02M5/458 , H02M7/003
摘要： There arises a problem in that, in a case where a load short breakdown or the like occurs in a power converter that uses a wide bandgap semiconductor element, an extremely high short-circuit current flows and it is not possible to protect the semiconductor element. There is provided a power converter including: an converter that converts an AC voltage into a DC voltage; a DC intermediate circuit that has a smoothing capacitor that smooths the DC voltage converted in the converter; an inverter that is configured to have a wide bandgap semiconductor switching element that converts the DC voltage smoothed in the DC intermediate circuit into an AC voltage; a reactor that is provided between the smoothing capacitor and the inverter; and a diode that is connected in parallel to the reactor. The diode is connected to a terminal of the smoothing capacitor or to a bus bar connected to a portion in the vicinity of the terminal of the smoothing capacitor, and the diode is connected to a terminal of the wide bandgap semiconductor switching element or to a bus bar connected to a portion in the vicinity of the terminal of the wide bandgap semiconductor switching element.
摘要翻译：在使用宽带隙半导体元件的电力变换装置中发生负载短路等的情况下，会产生流过非常高的短路电流的问题，不能保护半导体元件。提供了一种电力转换器，包括：转换器，将AC电压转换为DC电压; DC中间电路，其具有平滑转换器中转换的DC电压的平滑电容器; 逆变器，其被构造为具有宽带隙半导体开关元件，该宽带隙半导体开关元件将在DC中间电路中平滑的DC电压转换为AC电压; 设置在平滑电容器和逆变器之间的电抗器; 以及与反应器并联连接的二极管。二极管连接到平滑电容器的端子或连接到连接到平滑电容器的端子附近的部分的汇流条，并且二极管连接到宽带隙半导体开关元件的端子或连接到总线连接到宽带隙半导体开关元件的端子附近的部分。

7. 发明公开

EP3073629A4 POWER CONVERSION DEVICE AND CONTROL METHOD FOR PERMANENT MAGNET SYNCHRONOUS MOTOR 有权转让
标题翻译： LEISTUNGSUMWANDLUNGSVORRICHUNG UND STEUERUNGSVERFAHRENFÜRPERMANENTMAGNETSYNCHRONMOTOR
公开(公告)号：EP3073629A4
公开(公告)日：2017-08-16
申请号：EP13897884
申请日：2013-11-22
申请人： HITACHI INDUSTRY EQUIPMENT SYSTEMS CO LTD
发明人： IBORI SATOSHI , ARAO YUSUKE , YAMAZAKI TADASHI , UCHINO YOSHIHIRO , HIROTA MASAYUKI , SUGINO HIDENORI
IPC分类号： H02P6/18 , H02P1/02
CPC分类号： H02P6/18 , H02P1/029 , H02P2203/03

8. 发明公开

EP3214753A4 POWER CONVERSION DEVICE AND METHOD FOR CONTROLLING POWER CONVERSION DEVICE 有权
公开(公告)号：EP3214753A4
公开(公告)日：2018-07-04
申请号：EP15855778
申请日：2015-08-25
申请人： HITACHI INDUSTRY EQUIPMENT SYSTEMS CO LTD
发明人： TOBARI KAZUAKI , IWAJI YOSHITAKA , IBORI SATOSHI , ONUMA YUSAKU , TOMITA HIROYUKI , NAKAMURA ATSUHIKO
IPC分类号： H02P21/36 , H02P21/00 , H02P21/24 , H02P21/26 , H02P27/04 , H02P27/06
CPC分类号： H02P21/00 , H02P21/24 , H02P21/26 , H02P21/36 , H02P27/04 , H02P27/06
摘要： Provided is a power conversion device capable of achieving a stable and highly precise velocity control characteristic even during a regenerative operation in a low-velocity region. This power conversion device is equipped with: a velocity estimation operation unit (5) that outputs an estimated velocity value É 1 ^ for an induction motor (1); an output frequency operation unit (7) that outputs an output frequency value É 1 * , which is an addition value obtained by adding the estimated velocity value É r ^ and the sliding frequency value É s * of the induction motor; and a velocity command adjustment operation unit (9) that, when the output frequency value É 1 * is equal to or less than a fixed value É l * 1v1 , controls the velocity command value É s * or the estimated velocity value É r ^ of the induction motor (1) so as to make the output frequency value É l * equal to or greater than the fixed value É l * 1v1 .

9. 发明公开

EP2615734A4 AC MOTOR ROTATION DIRECTION DETECTING METHOD AND ELECTRIC POWER CONVERSION DEVICE FOR AC MOTOR USING SAME 审中-公开
标题翻译： VERFAHREN ZUR ERKENNUNG DER DREHRICHTUNG EINES WECHSELSTROMMOTORS UND ELEKTRISCHE LEISTUNGSUMWANDLUNGSVORRICHTUNGFÜREINEN AC-MOTOR DAMIT
公开(公告)号：EP2615734A4
公开(公告)日：2017-07-19
申请号：EP10856924
申请日：2010-09-07
申请人： HITACHI INDUSTRY EQUIPMENT SYSTEMS CO LTD
发明人： ARAO YUSUKE , IBORI SATOSHI
IPC分类号： H02P27/06 , H02P6/18 , H02P23/14 , H02P29/024
CPC分类号： H02P23/14 , H02P6/188 , H02P29/025
摘要： In a method for detecting rotation direction of an AC motor, quickly and correctly, when re-starting the AC motor after generation of an instantaneous electric power interruption, and also an electric power conversion device for the AC motor mentioned above, there are provided a converter 21, a smoothing capacitor 22, an inverter 23 for inverting a DC electric power from the converter into a three (3) phase AC power having a desired frequency thereof, and a controller/driver portion 4 for driving/controlling switching elements building up that inverter, wherein detection is made at a timing "t A " or "t B " when AC voltages of U-phase and V-phase among three (3) phases of AC inductive electric powers from the AC motor intersect with each other, and when supplying the three (3) phase electric power to the AC motor, again, after stoppage of an output of that electric power conversion device, a flow path for freewheeling current is formed between the inverter and the AC motor by driving part of the switching elements building up the inverter at the timing detected, and the rotation direction of the motor is determined depending on the freewheeling current detected.
摘要翻译：在检测交流电动机的旋转方向的方法中，迅速且正确地进行瞬时电力中断后的交流电动机的再启动，以及上述交流电动机的电力变换装置的情况下，转换器21，平滑电容器22，用于将来自转换器的DC电力逆变为具有所需频率的三（3）相AC电力的逆变器23，以及用于驱动/控制构建起来的开关元件的控制器/驱动器部分4 在来自交流电动机的交流感应电力的三（3）相之中的U相和V相的交流电压交叉的情况下，在定时“t A”或“t B”进行检测的逆变器，在向交流电动机供给三（3）相的电力时，在该电力转换装置的输出停止后，再次通过驱动p型逆变器与交流电动机之间形成续流用流路在检测到的定时处开关元件构成逆变器，并且电动机的旋转方向取决于检测到的续流电流来确定。

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