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    • 2. 发明授权
    • Driver for driving power switch element
    • 用于驱动电源开关元件的驱动器
    • US08680837B2
    • 2014-03-25
    • US13048534
    • 2011-03-15
    • Jian-Hong ZengJian JiangQifeng YeJian-Ping Ying
    • Jian-Hong ZengJian JiangQifeng YeJian-Ping Ying
    • H03K17/687G05F1/46
    • H03K17/691H03K17/6877
    • A driver for driving a driving element includes: a signal source, for providing a square signal; a first modulation circuit, for providing on-pulses and off-pulses according to edges of the square signal; a transformer for coupling output signals of the first modulation circuit to a secondary winding of the transformer to form coupled signals; a second modulation circuit for providing first operating pulses according to coupled on-pulses of the coupled signals, and providing second operating pulses according to coupled off-pulses of the coupled signals; a switch device for turning off the switch device according to the first operating pulses and turning on the switch device according to the second operating pulses, and when the switch device is turned off, coupled on-pulses charge an equivalent capacitor of the driving element to a first driving potential to turn on the driving element, and when the switch device is turned off, the equivalent capacitor discharges to a second driving potential to turn off the driving element, and the width of the on-pulses is less than 1000 ns.
    • 用于驱动驱动元件的驱动器包括:信号源,用于提供平方信号; 第一调制电路,用于根据平方信号的边缘提供导通脉冲和截止脉冲; 用于将所述第一调制电路的输出信号耦合到所述变压器的次级绕组以形成耦合信号的变压器; 第二调制电路,用于根据耦合信号的耦合接通脉冲提供第一工作脉冲,并根据耦合信号的耦合关断脉冲提供第二工作脉冲; 开关装置,用于根据第一操作脉冲关闭开关装置,并根据第二操作脉冲接通开关装置,并且当开关装置关闭时,将驱动元件的等效电容器的接通脉冲充电到 导通驱动元件的第一驱动电位,并且当开关器件关断时,等效电容器放电到第二驱动电位以关断驱动元件,并且导通脉冲的宽度小于1000ns。
    • 7. 发明授权
    • Converter power unit and its bus bars
    • 转换器电源单元及其母线
    • US09042112B2
    • 2015-05-26
    • US13682722
    • 2012-11-20
    • Wei GuanJian JiangBagao LiKaitian YanHongyang Wu
    • Wei GuanJian JiangBagao LiKaitian YanHongyang Wu
    • H05K1/18H05K7/18
    • H05K7/18H05K7/1432
    • A converter power unit comprises: a heat sink; n power switch modules on the heat sink; a first group of laminated bus bars comprising a first and a second bus bar; a capacitor group comprising m capacitor; a second group of laminated bus bars comprising a third and a fourth bus bar, the first bus bar is connected with the third bus bar, the second bus bar is connected with the fourth bus bar; providing that vertical projection areas projected by an area occupied by the n power switch modules and projected by the capacitor group on a first plane perpendicular to an axial direction of the capacitor group are defined as a first and a second projection areas respectively, the first and the second projection area have an overlapped area. The present application can reduce the stray inductances in the commutating loop of the converter.
    • A转换器功率单元包括:散热器; n个散热器上的电源开关模块; 第一组叠层母线,包括第一和第二母线; 包括m个电容器的电容器组; 第二组叠层母线,包括第三和第四母线,第一母线与第三母线连接,第二母线与第四母线连接; 将由n个功率开关模块占据的面积投影的垂直投影面积分别设定为第一和第二投影面积,第一投影面积和第二投影面积分别被定义为第一投影面积和第二投影面积, 第二投影区域具有重叠区域。 本申请可以减少转换器的换向回路中的杂散电感。
    • 8. 发明授权
    • Methods of producing epoxides from alkenes using a two-component catalyst system
    • 使用双组分催化剂体系从烯烃生产环氧化物的方法
    • US08481766B2
    • 2013-07-09
    • US12943138
    • 2010-11-10
    • Mayfair C. KungHarold H. KungJian Jiang
    • Mayfair C. KungHarold H. KungJian Jiang
    • C07D301/06
    • C07D301/06
    • Methods for the epoxidation of alkenes are provided. The methods include the steps of exposing the alkene to a two-component catalyst system in an aqueous solution in the presence of carbon monoxide and molecular oxygen under conditions in which the alkene is epoxidized. The two-component catalyst system comprises a first catalyst that generates peroxides or peroxy intermediates during oxidation of CO with molecular oxygen and a second catalyst that catalyzes the epoxidation of the alkene using the peroxides or peroxy intermediates. A catalyst system composed of particles of suspended gold and titanium silicalite is one example of a suitable two-component catalyst system.
    • 提供烯烃环氧化方法。 所述方法包括在烯烃被环氧化的条件下,在一氧化碳和分子氧的存在下,在水溶液中将烯烃暴露于双组分催化剂体系的步骤。 双组分催化剂体系包括在分子氧氧化CO期间产生过氧化物或过氧化物中间体的第一催化剂和使用过氧化物或过氧化物中间体催化烯烃的环氧化的第二催化剂。 由悬浮金和钛硅沸石的颗粒组成的催化剂体系是合适的双组分催化剂体系的一个实例。