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    • 2. 发明专利
    • Power conversion apparatus
    • 功率转换装置
    • JP2009171842A
    • 2009-07-30
    • JP2009106712
    • 2009-04-24
    • Hitachi Industrial Equipment Systems Co LtdHitachi Keiyo Engineerring & System Ltd株式会社日立ケーイーシステムズ株式会社日立産機システム
    • KAMEZAWA TOMOYATAKADA NAOKIHIROTA MASAYUKIHIRAGA MASAHIROIBORI SATOSHI
    • H01L23/34H02M7/48H01L25/04H01L25/07H01L25/18
    • H01L2924/0002H01L2924/00
    • PROBLEM TO BE SOLVED: To provide a temperature detection method of a miniaturized and inexpensive semiconductor device, and to provide a compact and inexpensive power conversion apparatus. SOLUTION: A temperature detection element 22 arranged near a component 8 with a power semiconductor device packaged therein and also near one of an emitter terminal and a collector terminal of the power semiconductor device, carries out the temperature detection for protecting the power semiconductor device. The temperature detection element 22 can be attached to a circuit board 13, so that electric insulation between a cooling fin 15 on which the power semiconductor device is arranged and the temperature detection element 22 is unnecessary, and a lead wire and man-hour for wiring the lead wire is unnecessary. Accordingly, protection of the power semiconductor device in a power conversion apparatus can be inexpensively achieved and compactification of the power conversion apparatus and shortening of assemble hour can be achieved. COPYRIGHT: (C)2009,JPO&INPIT
    • 要解决的问题:提供一种小型化和便宜的半导体器件的温度检测方法,并提供紧凑且廉价的电力转换装置。 解决方案:在功率半导体器件封装在功率半导体器件附近并且靠近功率半导体器件的发射极端子和集电极端子的部件8附近设置的温度检测元件22执行用于保护功率半导体的温度检测 设备。 温度检测元件22可以附接到电路板13,使得不需要在其上布置功率半导体器件的冷却翅片15与温度检测元件22之间的电绝缘,以及用于布线的引线和工时 引线是不必要的。 因此,能够廉价地实现功率转换装置的功率半导体装置的保护,能够实现电力转换装置的紧凑化和组装时间的缩短。 版权所有(C)2009,JPO&INPIT
    • 4. 发明专利
    • Power converter
    • 电源转换器
    • JP2008148510A
    • 2008-06-26
    • JP2006335249
    • 2006-12-13
    • Hitachi Industrial Equipment Systems Co Ltd株式会社日立産機システム
    • MO KOMEIIBORI SATOSHIKAMEZAWA TOMOYAHIROTA MASAYUKIHIRAGA MASAHIRO
    • H02M7/00H02P27/06
    • PROBLEM TO BE SOLVED: To provide a power converter that achieves improvement in usability from the equipment side, even when it is used under various installation environments. SOLUTION: The power converter is provided with a power conversion circuit 1-3 for supplying variable-voltage variable-frequency AC power to an AC motor 4, a cooling fan 6 provided so as to cool a cooling fin mounted with a power semiconductor in the power conversion circuit 1-3, and a semiconductor switch provided in a power supply circuit of the cooling fan 6 for driving and stopping the cooling fan 6. The power converter also has a detection circuit for detecting abnormalities, such as short-circuit failure of the cooling fan 6; and when the detection circuit detects a short-circuit abnormality, power supply to the cooling fan 6 is cut off. COPYRIGHT: (C)2008,JPO&INPIT
    • 要解决的问题:即使在各种安装环境下使用时,也提供从设备侧实现可用性的改善的电力转换器。 电源转换器配备有用于向AC电动机4供应可变电压的可变频率AC电力的电力转换电路1-3,设置为冷却安装有电力的散热片的冷却风扇6 电力转换电路1-3中的半导体,以及设置在冷却风扇6的电源电路中用于驱动和停止冷却风扇6的半导体开关。功率转换器还具有检测电路,用于检测短路, 冷却风扇6的电路故障; 并且当检测电路检测到短路异常时,切断对冷却风扇6的供电。 版权所有(C)2008,JPO&INPIT
    • 5. 发明专利
    • Power conversion apparatus and power cycle life prediction method
    • 功率转换装置和功率循环寿命预测方法
    • JP2012191849A
    • 2012-10-04
    • JP2012130383
    • 2012-06-08
    • Hitachi Industrial Equipment Systems Co Ltd株式会社日立産機システム
    • IBORI SATOSHIKAMEZAWA TOMOYAMO KOMEIHIROTA MASAYUKIHIRAGA MASAHIRO
    • H02M7/48
    • PROBLEM TO BE SOLVED: To provide a power conversion apparatus and a power cycle life prediction method, with which operability from a facility-side can be improved when the apparatus is used for purpose of frequently repeating start/stop by using the power conversion apparatus.SOLUTION: A power conversion apparatus comprises: power conversion circuits 1 to 3 for supplying AC power of variable voltage/variable frequency; a detection circuit 11 for detecting temperature of a power semiconductor 9 in the power conversion circuits; and an arithmetic unit for diagnosing power cycle life of the power semiconductor 9 based on a detection value in the detection circuit 11. The arithmetic unit calculates the power cycle life of the power semiconductor 9 based on a maximum temperature rise value detected by the detection circuit 11.
    • 要解决的问题:提供一种电力转换装置和动力循环寿命预测方法,当将该装置用于通过使用电力频繁地重复启动/停止的目的时,可以改善来自设备侧的可操作性 转换装置。 电源转换装置包括:用于提供可变电压/可变频率的交流电的电力转换电路1至3; 用于检测功率转换电路中的功率半导体9的温度的检测电路11; 以及用于基于检测电路11中的检测值来诊断功率半导体9的功率循环寿命的运算单元。运算单元基于由检测电路检测到的最大温度上升值来计算功率半导体9的功率循环寿命 11.版权所有(C)2013,JPO&INPIT
    • 6. 发明专利
    • Low noise power conversion apparatus
    • 低噪音功率转换装置
    • JP2009142076A
    • 2009-06-25
    • JP2007316058
    • 2007-12-06
    • Hitachi Industrial Equipment Systems Co Ltd株式会社日立産機システム
    • SENDA TADAHIKOMISHIMA AKIRAMO KOMEIKAMEZAWA TOMOYAHIRAGA MASAHIROIBORI SATOSHI
    • H02M7/48H02M1/44
    • PROBLEM TO BE SOLVED: To provide a power conversion apparatus reducing noise current with a small and inexpensive system without enlarging a noise prevention component. SOLUTION: The power conversion apparatus includes a rectifier circuit 1, a smoothing capacitor 2 arranged on a DC output-side of the rectifier circuit and an inverter circuit 3 connected to an alternating current-side of the smoothing capacitor. The apparatus also includes a first ground terminal G1 grounding the power conversion apparatus and a second ground terminal G2 shielding and covering a shield cable to a motor or connecting a motor ground line. The first ground terminal G1 and the second ground terminal G2 are electrically connected by wiring. The first ground terminal G1 and an AC input side of the rectifier circuit 1 are connected by wiring through first capacitors Cx and Cy. The second ground terminal G2 and the inverter circuit 3 are connected by wiring through a second capacitor Cn and a resistor Rn. The capacity of the second capacitor Cn is made to be smaller than that of the first capacitors Cx and Cy. COPYRIGHT: (C)2009,JPO&INPIT
    • 要解决的问题:提供一种电力转换装置,其在小型廉价的系统下降低噪声电流,而不增加噪声防止部件。 解决方案:电力转换装置包括整流电路1,布置在整流电路的直流输出侧的平滑电容器2和连接到平滑电容器的交流侧的逆变器电路3。 该装置还包括将电力转换装置接地的第一接地端子G1和屏蔽电缆到电动机或连接电动机接地线的第二接地端子G2。 第一接地端子G1和第二接地端子G2通过布线电连接。 整流电路1的第一接地端子G1和AC输入侧通过布线通过第一电容器Cx和Cy连接。 第二接地端子G2和逆变器电路3通过布线通过第二电容器Cn和电阻器Rn连接。 使第二电容器Cn的容量小于第一电容器Cx和Cy的容量。 版权所有(C)2009,JPO&INPIT
    • 8. 发明专利
    • Power conversion apparatus and power cycle life prediction method
    • 功率转换装置和功率循环寿命预测方法
    • JP2008271703A
    • 2008-11-06
    • JP2007111192
    • 2007-04-20
    • Hitachi Industrial Equipment Systems Co Ltd株式会社日立産機システム
    • IBORI SATOSHIKAMEZAWA TOMOYAMO KOMEIHIROTA MASAYUKIHIRAGA MASAHIRO
    • H02M7/48
    • H02M5/451
    • PROBLEM TO BE SOLVED: To provide a power conversion apparatus and a power cycle life prediction method, with which operability from a facility-side can be improved in case when the apparatus is used for the purpose of frequently repeating start/stop by using the power conversion apparatus. SOLUTION: The power conversion apparatus is provided with power conversion circuits 1 to 3 supplying AC power of variable voltage/variable frequency, a detection circuit 11 detecting a temperature of a power semiconductor 9 in the power conversion circuits and an arithmetic unit diagnosing the power cycle life of the power semiconductor 9 based on a detection value in the detection circuit 11. The arithmetic unit obtains the power cycle life of the power semiconductor 9 based on a maximum temperature rise value detected by the detection circuit 11. COPYRIGHT: (C)2009,JPO&INPIT
    • 要解决的问题:提供一种电力转换装置和动力循环寿命预测方法,其中当设备用于经常重复启动/停止的目的的情况下,可以提高从设备侧的可操作性 使用电力转换装置。 电源转换装置具有提供可变电压/可变频率的交流电的电力转换电路1至3,检测电力转换电路中的功率半导体9的温度的检测电路11以及运算单元诊断 功率半导体9的功率循环寿命基于检测电路11中的检测值。运算单元基于由检测电路11检测的最大温度上升值来获得功率半导体9的功率循环寿命。 版权所有(C)2009,JPO&INPIT
    • 9. 发明专利
    • Inverter device
    • 逆变器装置
    • JP2006042413A
    • 2006-02-09
    • JP2004214576
    • 2004-07-22
    • Hitachi Industrial Equipment Systems Co Ltd株式会社日立産機システム
    • HUANG MINGXIWATANABE HIROSHIKAMEZAWA TOMOYATAKADA NAOKIHIRAGA MASAHIRO
    • H02M7/48
    • PROBLEM TO BE SOLVED: To provide, at low cost, an inverter device which can detect an inverter output current accurately from the voltage generated by a shunt resistor. SOLUTION: This inverter device takes out voltage Vsh for current detection by a shunt resistor Rsh inserted between a DC part consisting of a capacitor Cdc and an inverter main circuit INV, and processes it with inverter output current detecting circuits CA and CB, an addition circuit AD, a voltage drop compensating circuit VCO, a peak hold circuit PH, a discharge circuit DS, and a residual voltage compensating circuit RDC so as to generate peak hold voltage V H . This divides it by a numerical value √2 by means of a microcomputer MC so as to get a value. This detects the value as an effective current of an inverter output current. COPYRIGHT: (C)2006,JPO&NCIPI
    • 要解决的问题:以低成本提供能够从分流电阻器产生的电压精确地检测逆变器输出电流的逆变器装置。 解决方案:该逆变器装置通过插入在由电容器Cdc和逆变器主电路INV构成的直流部分之间的分流电阻器Rsh取出电流检测电压Vsh,并用逆变器输出电流检测电路CA和CB进行处理, 加法电路AD,电压降补偿电路VCO,峰值保持电路PH,放电电路DS和残余电压补偿电路RDC,以产生峰值保持电压V SB。 这通过微机MC将数值分成数值√2,以得到一个值。 这将检测到该值作为逆变器输出电流的有效电流。 版权所有(C)2006,JPO&NCIPI