公开(公告)号：US10027122B2

公开(公告)日：2018-07-17

申请号：US15226620

申请日：2016-08-02

申请人： THE SECRETARY, DEPARTMENT OF ATOMIC ENERGY

发明人： Manmath Kumar Badapanda

IPC分类号： H02J1/00 ,  H02J3/00 ,  H02J3/36 ,  H02M3/335 ,  H02M7/5387 ,  H03F1/02 ,  H03F3/19 ,  H02M1/12 ,  H02M1/42 ,  H02M3/337 ,  H02M7/08 ,  H02M1/00

摘要： The present invention provides a high voltage regulated DC power supply with full range 24 pulse input for ripple free output for high power RF amplifier, comprising: full range 24 pulse 3 phase 11 kV input system configured to provide uncontrolled low voltage DC bus, low input harmonics and high input power factor; a plurality of DC-DC power modules having their output connected in a series and coupled to the said DC bus voltage; each power module comprising a DC source, an inverter bridge IGBTs operating at predefined duty cycle and staggered to reduce the output ripple and output stored energy; and a combination of feed forward and feedback control circuit adapted to regulate the variations in the input line voltage and the variation in output at various load current to finally obtain ripple free high voltage output.

公开(公告)号：US09523033B2

公开(公告)日：2016-12-20

申请号：US13925809

申请日：2013-06-24

申请人： THE SECRETARY, DEPARTMENT OF ATOMIC ENERGY

发明人： Kunal Purnachandra Muthe ,  Mukund Shrinivas Kulkarni ,  Anuj Soni ,  Ajay Singh ,  Narender Singh Rawat ,  Devesh Ramdhar Mishra ,  Ratna Pradeep ,  Shovit Bhattacharya ,  Deva Nand Sharma ,  Shiv Kumar Gupta

IPC分类号： C09K11/65 ,  C04B35/01 ,  C04B35/44 ,  C04B35/653

CPC分类号： C09K11/655 ,  C04B35/013 ,  C04B35/44 ,  C04B35/653 ,  C04B2235/3225 ,  C04B2235/422 ,  C04B2235/604 ,  C04B2235/6562 ,  C04B2235/6565 ,  C04B2235/6581 ,  C04B2235/764

摘要： A method for the synthesis of OSL grade polycrystalline mass of ceramic materials with dopant C involving source ceramic material preferably in its readily available powder form comprising the steps of melting of the said ceramic material in graphite environment including a graphite crucible/container in vacuum; and obtaining there from polycrystalline aggregate by rapid solidification of said melt to thereby provide said polycrystalline mass of ceramic materials with dopant C of optically stimulated luminescence grade. The said powder form of the ceramic material is compacted and formed into pellets before subjecting to melting.

摘要翻译： 一种用于合成具有掺杂剂C的陶瓷材料的OSL级多晶体质量的方法，其中所述掺杂剂C优选以其易于获得的粉末形式包括源陶瓷材料，包括在真空中包括石墨坩埚/容器的石墨环境中熔化所述陶瓷材料的步骤; 并通过所述熔体的快速固化从多晶聚集体获得，从而向所述陶瓷材料的多晶质体提供具有光学激发等级的掺杂剂C. 所述粉末形式的陶瓷材料在熔化之前被压实并形成颗粒。

公开(公告)号：US20100030493A1

公开(公告)日：2010-02-04

申请号：US12525358

申请日：2007-02-02

申请人： Aswathanarayan Rama Rao

发明人： Aswathanarayan Rama Rao

IPC分类号： G06F19/00 ,  G01H17/00 ,  G01H11/00

CPC分类号： G01H1/003

摘要： A system for on-line detection of incipient cracks in turbine blades to serve as early warning system for turbine blade failure. The system of non-intrusive detection of turbine blade condition of the invention is simple and cost effective and would enable assessing the health of the turbine blade during plant operation, which is extremely important for the safe operation of the turbine in an operating power plant. The present method and system of identifying the presence of modulated blade passing frequency (BPF,) for blade vibration that is not co-relatable to the change in the operating condition and would thus be indicative of presence of cracked blades with incipient cracking. It is capable for verifying the Campbell diagram and ascertain the margin available between the natural frequency of the blade/stage and the steam excitation frequencies/engine orders.

摘要翻译： 一种用于在线检测涡轮叶片初期裂缝的系统，用作涡轮叶片故障的早期预警系统。 本发明的涡轮叶片状态的非侵入性检测系统简单且成本有效，能够在工厂运行期间评估涡轮叶片的健康状况，这对于运行中的发电厂的涡轮机的安全运行是非常重要的。 本发明的方法和系统确定叶片振动的调制叶片通过频率（BPF）的存在，其与操作条件的变化不相关，并且因此指示存在具有初期裂纹的裂纹叶片。 它能够验证坎贝尔图，并确定叶片/载物台的固有频率与蒸汽激发频率/发动机顺序之间的裕度。

公开(公告)号：US20070146714A1

公开(公告)日：2007-06-28

申请号：US10569047

申请日：2003-08-22

申请人： Samarendra Mohanty ,  Pradeep Gupta

发明人： Samarendra Mohanty ,  Pradeep Gupta

IPC分类号： G01N21/00

CPC分类号： G21K1/006

摘要： A system and the method for transport of microscopic objects/particles involving the use of laser source operatively connected to a microscope objective which is adapted to generate optical focal spots on said particle(s) with asymmetric intensity profile in transverse plane followed by varying the said asymmetry of the gradient optical forces on the micron sized object/particles to thereby transport the microscopic object(s). The system and the method can be used to transport microscopic objects including i) transportation of cells and intra-cellular organelles, ii) acceleration of microscopic objects along any direction in a plane transverse to the direction of propagation of laser beam, iii) optical channeling of objects through a micro-capillary from one micro-well to another and transfer to another channel after desired processing, iv) sorting of microscopic objects, v) optical control of micro-machines, micro-fluidic devices etc. Importantly the apparatus and the method of the invention would have use in various biotechnological and micro electromechanical systems. Also the system and method for optical transportation of microscopic objects, would be capable of transporting objects of varying dimensions ranging from sub-micron to few tens of microns.

摘要翻译： 涉及使用可操作地连接到显微镜物镜的激光源的微观物体/颗粒的传送系统和方法，该显微镜物镜适于在横向平面上产生具有不对称强度分布的所述颗粒上产生光学焦斑，随后改变所述 在微米尺寸的物体/颗粒上的梯度光学力的不对称性，从而传送微观物体。 该系统和方法可用于运输微观物体，包括i）细胞和细胞内细胞器的运输，ii）沿与激光束传播方向相反的平面中的任何方向的微观物体的加速，iii）光通道 的物体通过微毛细管从一个微孔到另一个微孔，并在所需的处理之后转移到另一个通道，iv）分选微观物体，v）微机，微流体装置等的光学控制。重要的是，该装置和 本发明的方法将用于各种生物技术和微机电系统中。 此外，用于微观物体的光学传输的系统和方法将能够传输从亚微米到几十微米的不同尺寸的物体。