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1. 发明公开

EP2738928A1 POWER CONVERTER 审中-公开
标题翻译：电力转换器
公开(公告)号：EP2738928A1
公开(公告)日：2014-06-04
申请号：EP12835807.4
申请日：2012-02-09
申请人： Fuji Electric Co., Ltd.
发明人： ODAKA Akihiro , TOBA Akio , GEKINOZU Masakazu
IPC分类号： H02M3/155
CPC分类号： H02M3/156 , H02J7/0065 , H02M1/14 , H02M3/1588 , Y02B40/90 , Y02B70/1466
摘要： A power conversion device includes a semiconductor switch series circuit configured by connecting semiconductor switches S p and S n in series; a capacitor series circuit configured by connecting capacitors C dp and C dn in series; a reactor L connected between the series connection point of the semiconductor switches S p and S n and the series connection point of the capacitors C dp and C dn ; and a direct current power source V s connected in parallel to the capacitor C dn or C dp . The semiconductor switch series circuit and capacitor series circuit are connected in parallel, a load Load is connected between the parallel connection points of the two circuits, and the semiconductor switches S p and S n are turned on and off, thereby raising a direct current power source voltage and supplying it to the load Load. By so doing, it is possible to reduce the size and cost of the entire device.
摘要翻译：电力变换装置具有将半导体开关Sp，Sn串联连接而构成的半导体开关串联电路，通过串联电容器Cdp和Cdn配置的电容器串联电路; 连接在半导体开关Sp和Sn的串联连接点与电容器Cdp和Cdn的串联连接点之间的电抗器L; 以及与电容器Cdn或Cdp并联连接的直流电源Vs。半导体开关串联电路和电容器串联电路并联连接，负载连接在两个电路的并联连接点之间，并且半导体开关Sp和Sn导通和关断，由此将直流电源电压并将其提供给负载负载。通过这样做，可以减小整个设备的尺寸和成本。

2. 发明公开

EP2983285A1 POWER CONVERSION APPARATUS 审中-公开
标题翻译：电力转换装置
公开(公告)号：EP2983285A1
公开(公告)日：2016-02-10
申请号：EP14778955.6
申请日：2014-01-14
申请人： Fuji Electric Co., Ltd.
发明人： ODAKA Akihiro , TOBA Akio
IPC分类号： H02M7/48
CPC分类号： H02P29/68 , H02M2001/327
摘要： A power conversion apparatus includes a torque command adjusting unit (10A) that adjusts a torque command so that a semiconductor temperature obtained by a semiconductor temperature detecting unit/semiconductor temperature estimating unit (11) matches a preset temperature when the semiconductor temperature is equal to or higher than the preset temperature. The torque command adjusting unit (10A) includes: a regulating unit that includes at least a proportional regulator (13) and an integral regulator (14) and that operates to eliminate a deviation between the preset temperature and the semiconductor temperature; and a torque correction amount limiting unit (16) that limits a torque correction amount (τ comp *) which is an output of the regulating unit so that the torque correction amount (τ comp *) does not increase an absolute value of a torque command (τ*). The torque command adjusting unit (10A) corrects the torque command (τ*), using the torque correction amount (τ comp *) limited by the torque correction amount limiting unit (16). As a result, it is possible to prevent interference with a control system and to protect a semiconductor device from overheating appropriately and reliably without limiting the torque of a motor more than necessary.
摘要翻译：本发明提供一种电力变换装置，其特征在于，具备：转矩指令调整部（10A），其在半导体温度等于或大于等于半导体温度时，使半导体温度检测部/半导体温度推定部（11）得到的半导体温度与预先设定的温度一致地调整转矩指令高于预设温度。转矩指令调整部（10A）包括：调整部，其至少包括比例调整部（13）和积分调整部（14），用于消除设定温度与半导体温度的偏差; 以及扭矩校正量限制部（16），其对作为所述调整部的输出的扭矩校正量（τcomp*）进行限制，以使所述扭矩校正量（τcomp*）不增大转矩指令的绝对值（τ *）。转矩指令调整部（10A）使用由转矩修正量限制部（16）限制的转矩修正量（τcomp*）来修正转矩指令（τ*）。结果，可以防止与控制系统的干扰并且适当且可靠地保护半导体装置不会过热，而不会超过必要地限制电动机的转矩。

3. 发明公开

EP2933618A1 SEMICONDUCTOR CHIP TEMPERATURE ESTIMATION DEVICE AND OVERHEAT PROTECTION DEVICE 审中-公开
标题翻译： VORRICHTUNG ZURTEMPERATURSCHÄTZUNGEINES HALBLEITERCHIPS UNDÜBERHITZUNGSSCHUTZVORRICHTUNG
公开(公告)号：EP2933618A1
公开(公告)日：2015-10-21
申请号：EP13861990.3
申请日：2013-11-11
申请人： Fuji Electric Co., Ltd.
发明人： IMAKIIRE Akihiro , ODAKA Akihiro , ADACHI Shinichiro
IPC分类号： G01K7/00 , H01L21/822 , H01L27/04 , H02H6/00 , H02H7/12 , H02H7/122 , H02M1/00 , H02M7/48
CPC分类号： G01K1/12 , G01K7/16 , G01K7/22 , G01K7/42 , H01L27/0248 , H02H7/12 , H02M1/32 , H02M7/5387 , H02M2001/327 , H02P29/68
摘要： A semiconductor chip temperature estimation device that estimates the temperature of a semiconductor chip incorporated together with a thermistor in a semiconductor module includes a loss calculation unit 2 that estimates loss in the semiconductor chip by calculation, using the current, switching frequency, and the like, of a semiconductor switching element in the semiconductor chip, a storage unit 3A in which is stored in advance a correlation between a temperature rise, which is the difference between the value of a temperature detected by the thermistor and the temperature of a cooling element such as a cooling medium that cools the semiconductor module, and the loss in the semiconductor chip, means for estimating temperature rise of the thermistor by calculation, using a semiconductor chip loss estimation value output from the loss calculation unit 2 and the correlation, and adder and subtractor means 22 for estimating the cooling element temperature by subtracting a thermistor temperature rise estimation value from the value of the temperature detected by the thermistor, wherein the temperature of the semiconductor chip is estimated with a cooling element temperature estimation value as a base temperature. Because of this, a thermistor that detects cooling element temperature is unnecessary, and a reduction in size and a reduction in cost of a power converter is achieved.
摘要翻译：在半导体模块中估计与热敏电阻一起结合的半导体芯片的温度的半导体芯片温度推定装置包括利用电流切换频率等通过计算来估计半导体芯片的损耗的损耗计算部2，半导体芯片中的半导体开关元件的存储单元3A，其中预先存储了作为由热敏电阻检测到的温度的值与冷却元件的温度之间的差的温度升高之间的相关性，冷却半导体模块的冷却介质和半导体芯片的损耗，使用从损耗计算单元2输出的半导体芯片损耗估计值和相关性，以及加法器和减法器，通过计算来估计热敏电阻的温度上升的装置用于通过减去热敏电阻来估计冷却元件温度的装置22 根据由热敏电阻检测到的温度的值来计算上升估计值，其中以冷却元件温度估计值作为基准温度来估计半导体芯片的温度。因此，不需要检测冷却元件温度的热敏电阻，能够实现功率转换器的小型化和成本降低。

4. 发明公开

EP2728733A1 POWER CONVERSION DEVICE 审中-公开
标题翻译：电力转换装置
公开(公告)号：EP2728733A1
公开(公告)日：2014-05-07
申请号：EP12803729.8
申请日：2012-06-12
申请人： Fuji Electric Co., Ltd.
发明人： ODAKA Akihiro , TOBA Akio , AKIBA Shinya
IPC分类号： H02M7/48 , H02H7/122 , H02H9/04
CPC分类号： H02M7/537 , H02H7/122 , H02H9/041 , H02M7/48
摘要： The invention relates to a power conversion device including an inverter which converts a voltage of a direct current power source 2 to an alternating current voltage of any magnitude and frequency using semiconductor switches 4, and supplies the voltage to a load such as an electric motor 5, wherein a switch unit 3 is provided in the direct current portion of the inverter. In the invention, a capacitor 1 is connected, via the switch unit 3, between a positive electrode and a negative electrode of the direct current power source 2, and a constant voltage element wherein when a fixed voltage or higher is reached, an electrical resistance decreases abruptly, current flows, and voltages between both ends are limited to specific voltage, is connected in parallel to the capacitor 1. Herein, a varistor 6, a zener diode 7, or an avalanche diode is used, or alternatively, a combination of the zener diode 7 and a self-turn-off semiconductor element (an IGBT, a MOSFET, or the like), or the like, is used, as the constant voltage element. Owing to the heretofore described configuration, each part configuring the power conversion device is protected against overvoltage, thus avoiding an increase in the capacitance and volume of the capacitor 1.
摘要翻译：本发明涉及一种功率转换装置，其包括逆变器，该逆变器使用半导体开关4将直流电源2的电压转换成任何幅度和频率的交流电压，并将该电压供应给诸如电动机5 其中，开关单元3设置在逆变器的直流部分中。在本发明中，电容器1通过开关单元3连接在直流电源2的正电极和负电极之间，以及恒压元件，其中当达到固定电压或更高电压时，电阻电流流动，并且两端之间的电压被限制到特定电压，并联连接到电容器1.在此，使用变阻器6，齐纳二极管7或雪崩二极管，或者可选地，齐纳二极管7和自断路半导体元件（IGBT，MOSFET等）等用作恒压元件。由于上述构造，构成功率转换装置的每个部件都被保护免受过电压的影响，从而避免了电容器1的电容和体积的增加。

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