Siqi
Siqi Li, Ann Arbor, MI US
Patent application number | Description | Published |
---|---|---|
20140313795 | SINGLE PHASE BI-DIRECTIONAL AC-DC CONVERTER WITH REDUCED PASSIVE COMPONENTS SIZE AND COMMON MODE ELECTRO-MAGNETIC INTERFERENCE - A bidirectional AC-DC converter is presented with reduced passive component size and common mode electro-magnetic interference. The converter includes an improved input stage formed by two coupled differential inductors, two coupled common and differential inductors, one differential capacitor and two common mode capacitors. With this input structure, the volume, weight and cost of the input stage can be reduced greatly. Additionally, the input current ripple and common mode electro-magnetic interference can be greatly attenuated, so lower switching frequency can be adopted to achieve higher efficiency. | 10-23-2014 |
20150015197 | DOUBLE-SIDED LCC COMPENSATION METHOD FOR WIRELESS POWER TRANSFER - A double-sided LCC compensation network and a tuning method are proposed for a wireless power transfer system. With the proposed topology, the resonant frequency is independent of coupling coefficient and load conditions. The parameter values are tuned to realize zero voltage switching (ZVS) for the sending side switches. A wireless charging system with up to 7.7 kW output power was designed and built using the proposed topology and achieved 96% efficiency from DC power source to battery load. | 01-15-2015 |
Siqi Li, Dearborn, MI US
Patent application number | Description | Published |
---|---|---|
20140340031 | WIRELESS POWER TRANSMISSION FOR BATTERY CHARGING - A wireless power transmission system is provided for high power applications. The power transmission system is comprised generally of a charging unit configured to generate an alternating electromagnetic field and a receive unit configured to receive the alternating electromagnetic field from the charging unit. The charging unit includes a power source; an input rectifier; an inverter; and a transmit coil. The transmit coil has a spirangle arrangement segmented into n coil segments with capacitors interconnecting adjacent coil segments. The receive unit includes a receive coil and an output rectifier. The receive coil also has a spirangle arrangement segmented into m coil segments with capacitors interconnecting adjacent coil segments. | 11-20-2014 |
Siqi Xu, Houston, TX US
Patent application number | Description | Published |
---|---|---|
20160032710 | TOOL FOR MEASURING WELLBORE GEOMETRY - A downhole tool is disclosed for measuring wellbore geometry. The downhole tool may include a body with a bore extending at least partially therethrough. The body may include a radial recess. An arm may be movably coupled to the body at a first end portion of the arm. The arm may be within the radial recess in a retracted position and be pivotable in a radially-outward direction relative to the body to an expanded position. A measurement device coupled to the body may measure the pivoting motion of the arm. A piston coupled to the body may be movably coupled to a second end portion of the arm, and the piston may respond to changes in hydraulic pressure to pivot the arm between the retracted position and the expanded position. | 02-04-2016 |
Siqi Zhang, Xiamen City CN
Patent application number | Description | Published |
---|---|---|
20110132569 | Brass alloys having superior stress corrosion resistance and manufacturing method thereof - The present invention relates to a brass alloy having superior stress corrosion comprising: 59.0-64.0 wt % Cu, 0.6-1.2 wt % Fe, 0.6-1.0 wt % Mn, 0.4-1.0 wt % Bi, 0.6-1.4 wt % Sn, at least one element selected from Al, Cr and B, the balance being Zn and unavoidable impurities, wherein the content of Al is 0.1-0.8 wt %, the content of Cr is 0.01-0.1 wt %, the content of B is 0.001-0.02 wt %. The alloy according to the present invention does not contain toxic elements such as lead and antimony, has superior corrosion resistance and good cuttingability and is suitable for the accessories in the potable water supply systems produced by casting, forging and extruding. | 06-09-2011 |
20110214836 | ENVIRONMENT-FRIENDLY MANGANESE BRASS ALLOY AND MANUFACTURING METHOD THEREOF - The present invention provides an environment-friendly manganese brass alloy, which comprises 55˜65 wt % of Cu, 1.0˜6.5 wt % of Mn, 0.2˜3.0 wt % of Al, 0˜3.0 wt % of Fe, 0.3˜2.0 wt % of Sn, 0.01˜0.3 wt % of Mg, 0˜0.3 wt % of Bi and/or 0˜0.2 wt % of Pb, the balance being Zn and unavoidable impurities. The alloys not only have superior mechanical properties, castability, cutability and corrosion resistance, especially stress corrosion resistance properties, but also have the advantages of low manufacturing costs and simple manufacturing process etc, which is suitable for making components through forging, casting, cutting and other manufacturing methods, especially suitable for making water tap bodies and valves through forging, casting and cutting processes. | 09-08-2011 |
Siqi Zheng, Beijing CN
Patent application number | Description | Published |
---|---|---|
20150336076 | Fuel treatment apparatus - An apparatus for treating a fuel is disclosed. The apparatus comprises a channel for fuel to be treated, a photocatalyst situated within the channel so as to be in contact with the fuel passing therethrough, electromagnetic radiation source means for irradiating the catalyst and magnetic field source means for providing a magnetic field to which the fuel is exposed. | 11-26-2015 |