Universitat Politècnica de Catalunya - UPC posted this:Multilevel Active-Clamped Electrical Energy ConverterA new multilevel conversion technique has been developed to produce efficient, compact, and easily scalable electrical energy converters to be employed in dc-dc, dc-ac, and ac-ac, single- or multiple-phase, conversion applications with unidirectional or bidirectional power flow. Partners to further develop the system and/or to establish commercial agreements along with technical cooperation are sought.
Universitat Politècnica de Catalunya - UPC posted this:Measuring Technique for Reducing the Number of Voltage Sensors in a Modular Multilevel ConverterUsing this measuring technique, each voltage sensor is able to measure the capacitor voltages of multiple Sub-Modules (SMs) of a Modular Multilevel Converter (MMC). The proposed technique highly reduces the number of voltage sensors used in MMCs, reducing the costs and complexity of the data acquisition system. Partners to further develop the system and/or to establish commercial agreements along with technical cooperation are sought.
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Energy & Waste posted this:Biolimp-MPdry. Technology for biogas cleaningBiogas is a dirty gas. Therefore, it requires a previous cleaning to be used as biofuel. There are many components to be removing, among them, water vapor, siloxane, halogenated hydrocarbons and H2S, all of them, affects the good performance of the CHP system. The Biolimp-MPdry technology is a multipropose technology that allows the biogas cleaning with a very lower costs and high performace yield.
University of Huelva posted this:New power generation electric systemThe proposed system is characterized by the following aspects which make it unique: 1- The system is built from a number of PEM fuel cells, supplied by al least one hydrogen source. Each module include a monitoring and control subsystem, so it is possible to activate/deactivate module induividually. 2- Each module can supply a different power value. 3- The monitoring and control subsystem receives electrical signal from each modules like stack voltage, stack current and cell voltage. 4- The monitoring and control system has two levels: the first level aims to control each module (local control) and the second level is responsible for coordinate local controller. 5- The monitoring and control system is on-line accessible. 6- The control and monitoring system distributes homogeneously the operating hours between the modules when the power demand is lower than the maximum power. 7- Each module has a oxygenation/cooling subsystem which supplies oxygen to cathide and air for refrigerate the stack. 8- Each module has a hydrogen subsystem wich is the responsible for hydrogen delivery to stack at ambient pressure. 9- The hydrogen subsystem include a hydrogen purge line. 10- The Electric Power Generation System includes a simulator to reproduce the performance ogf the whole subsystem.
Cracow University of Technology posted this:Institute of Thermal Power Engineering - Cracow University of TechnologyInstitute of Thermal Power Engineering is providing research and education in the field of energy technologies. The Institute covers a wide area of energy research, from expert works for the power sector, to investigations of the most advanced technologies for energy generation
Universidad de Alcalá-OTRI posted this:Risk management of the effects of solar activity: Device and procedure of obtaining in real time and high resolution, the Local Geomagnetic Disturbance at middle latitudes.The research team specialized in Space Meteorology within the Space Research Group of the University of Alcalá, has developed a device and procedure that, based on the measurement of the local geomagnetic field, is able to estimate the magnetic disturbance component associated to solar activity at middle latitudes. The determination of the magnetic disturbance component is especially relevant in cases of sporadic but explosive solar phenomena. From the perspective of the actual user, the present invention constitutes an essential element in the risk management of the effects of solar activity on vulnerable technologies, both ground-based and satellite-based (electric power, rail transport, terrestrial and positioning navigation systems, radio and satellite communication systems ...), increasing the capacities of public administrations, civil protection and emergencies and the companies themselves, in order to prepare a successful strategy for adverse conditions related to the solar activity. The group is looking for collaboration and/or commercial agreements with the Central Administration, Civil Protection, Critical Infrastructure, Electric Power companies, Rail Network, Oil pipelines companies, Gas Pipelines companies, Insurance firms, etc...
DIT Hothouse posted this:UPQC: A Device for Power Quality EnhancementUPQC (Universal Power Quality Conditioner) allows optimal control of a power electronics-based conditioner. Comprising both shunt and series elements (inverters), UPQC compensates for sags and swells, unbalance and distortion (harmonics)in the supply current and supply voltage respectively. UPQC delivers cost savings, increased reliability and enhanced electrical power network functionality. It also employs modular control software and novel techniques for load side short circuit protection of series inverters.
Universidad de Alicante posted this:Low cost sensors for the detection of gaseous hydrogen• New simple preparation method which does not require sophisticated instrumental techniques. • The procedure use low-cost materials and optimizes the loading of the metals employed. • This technology is efficient, producing robust and reliable sensors with high signal-to-response ratio and low cost. • The CNT and nanoparticle suspensions needed are stable and may be stored over long periods of time.
Universidad de Alicante posted this:“No-Noble-Metal” Catalytic trap to remove Hydrocarbons, NOx and CO emissions from combustion enginesBasically, the catalytic trap bed is composed of a zeolite with a Si/Al ratio between 10 and 20. The zeolite is partially interchanged with cations of one or several non-noble metals. In order to achieve an optimum performance of the catalytic trap, these metals should be interchanged in the internal zeolite structure, and never on its external surface. In this way, the outflow of the exhaust gases passes through the catalytic trap bed to adsorb the HC at low temperatures. The material has been developed at laboratory scale. Different compositions of this material have been tested with simulated streams of internal combustion engines (cold starts). As a result, the material is able to reduce HC emissions in internal combustion engines operating with both mixtures almost stoichiometric and low fuel mixtures. The main difference between this invention and other existing materials is that this catalytic trap avoids any element or additional layer composed of an oxidation catalyst based on noble metals. Consequently, HC emissions could be totally removed through a single bed without using high-cost materials (noble metals) or further stream treatments. This fact allows the catalytic trap to be placed in any position according to the different control systems employed for decreasing other pollutant emissions existing in the gases stream, since the total elimination of HC takes place on the catalytic trap. Thus, this technology development results in a solid material where coexists metal(s) and protons in an optimum ratio inside of the zeolite channels, leading to a system that can act as a HC trap and as an oxidation catalyst in only a single bed, during the whole cold start cycle. The main innovative aspect of this catalytic trap is that the adsorbent material can capture the hydrocarbons in the cold start of the engine and oxidize gases during its warmed-up operating conditions without using noble metals, which are frequently used as oxidation catalyst. At high temperatures, this material is able to carry out total oxidation of both hydrocarbons retained by the catalytic trap and those present in the exhaust gas stream. Consequently, the resulting gas stream released to the atmosphere is innocuous in hydrocarbons. • Noble metals are not used. • Structural advantages, since the control systems are simplified and pollutants in internal combustion engines are reduced. • Economic benefits (The price of noble metal is approximately 100 times more expensive than the materials employed by the researchers). • The catalytic trap can be placed in any position with regard to different control systems. • Besides its hydrocarbon trapping role, the system can also act as oxidation catalyst during the cold-start cycle.