Process for producing dimethylformamide
    1.
    发明授权
    Process for producing dimethylformamide 失效
    二甲基甲酰胺生产方法

    公开(公告)号:US4218398A

    公开(公告)日:1980-08-19

    申请号:US972257

    申请日:1978-12-22

    CPC分类号: C07C231/00 C07C233/00

    摘要: Dimethylformamide mg.multidot.produced by reaction of monomethylamine and trimethylamine at a molar ratio of trimethylamine to monomethylamine of 0.1-10, with carbon monoxide in the presence of 1-500 mg. atom of at least one of iodine, bromine, iodides and bromides as a catalyst in term of halogen per one mole of raw material methylamines at a temperature of 100.degree.-350.degree. C. under a pressure of at least 50 kg/cm.sup.2 gage. Dimethylformamide is produced in a very high yield with a high selectivity from monomethylamine and trimethylamine having less demand among three species of methylamines formed from methanol and ammonia.

    摘要翻译: 二甲基甲酰胺通过一甲胺和三甲胺以三甲胺与一甲胺的摩尔比为0.1-10与一氧化碳在1-500mg存在下反应生成。 在100-350℃的温度下,在至少50kg / cm2的压力下,每1摩尔原料甲胺中的碘,溴,碘化物和溴化物中的至少一种作为催化剂的原子。 二甲基甲酰胺以非常高的产率以高的选择性从一甲胺和三甲胺生产,在甲醇和氨形成的三种甲胺中的需求较少。

    Power conversion device
    6.
    发明授权
    Power conversion device 有权
    电源转换装置

    公开(公告)号:US09190922B2

    公开(公告)日:2015-11-17

    申请号:US14342878

    申请日:2012-09-06

    IPC分类号: H02M5/297 H02M5/293 H02M7/217

    CPC分类号: H02M5/297 H02M5/293 H02M7/217

    摘要: An electric power conversion device comprises a conversion circuit having bi-directionally switchable plural pairs of switching elements connected to respective phases and converting an inputted AC power into an AC electric power. A first switching time is calculated using detected voltages detected by voltage sensors and an output command value. A second switching time is calculated in a form of a time which is a subtraction of the first switching time from a half period of a carrier and, using this time, control signals to switch on and off of the switching elements are generated.

    摘要翻译: 电力转换装置包括具有双向可切换的多对开关元件的转换电路,其连接到各相,并将输入的AC电力转换成AC电力。 使用由电压传感器检测的检测电压和输出指令值来计算第一切换时间。 以从载波的半个周期减去第一切换时间的时间的形式计算第二切换时间,并且使用此时产生开关元件的接通和断开的控制信号。

    POWER CONVERSION DEVICE
    7.
    发明申请
    POWER CONVERSION DEVICE 有权
    电源转换器件

    公开(公告)号:US20140226382A1

    公开(公告)日:2014-08-14

    申请号:US14342842

    申请日:2012-09-06

    IPC分类号: H02M5/297

    摘要: An electric power conversion device comprises a conversion circuit having bi-directionally switchable plural pairs of switching elements connected to respective phases and converting an inputted AC power into an AC electric power. A first switching time is calculated using detected voltages detected by voltage sensors and an output command value. A second switching time is calculated using a carrier and the calculated first switching time. The second switching time is such that, in one period of the alternating current electric power outputted from the conversion circuit, the second switching time included in a first half period of the one period is equal to the second switching time included in a second half period of the one period.

    摘要翻译: 电力转换装置包括具有双向可切换的多对开关元件的转换电路,其连接到各相,并将输入的AC电力转换成AC电力。 使用由电压传感器检测的检测电压和输出指令值来计算第一切换时间。 使用载波和计算的第一切换时间来计算第二切换时间。 第二切换时间使得在从转换电路输出的交流电力的一个周期中,包括在一个周期的前半个周期中的第二切换时间等于包括在后半周期中的第二切换时间 的一个时期。