Alstom is a French multinational company which holds interests in the electricity generation and rail transport markets. According to the company website, in 2012–2013 Alstom had annual sales of €20.3 billion, and employed approximately 96,000 people in around 100 countries. Alstom's headquarters are located in Levallois-Perret, west of Paris. Its CEO is Patrick Kron.Alstom is active in the fields of electrical generation and transmission, with products including turbines for hydroelectric, gas, coal and nuclear-powered plants, as well as large-scale electrical grid infrastructure, solar-thermal, and geothermal systems. It is also a major rail vehicle manufacturer, active in the fields of passenger transportation, signalling and locomotives, with products including the AGV, TGV, Eurostar, and Pendolino high-speed trains, in addition to suburban, regional and metro trains, and Citadis trams.Alstom was formed from a merger between Compagnie Française Thomson Houston and the Société Alsacienne de Constructions Mécaniques in 1928; significant acquisitions included the Constructions Electriques de France , shipbuilder Chantiers de l'Atlantique , and parts of ACEC SA . A merger with parts of the General Electric Company plc formed GEC-Alstom in 1989; the company became Alstom in 1998.In 2004, Alstom was in financial crisis due to massive inherited unexpected costs arising from a design flaw inherited from the acquisition of ABB Group's turbine business, in addition to losses in other areas of the business. The company required a €3.2 billion state-backed bailout in 2003 – and as a result was required to sell several divisions including shipbuilding and electrical transmission to comply with EU rules on state aid.In 2014, Alstom and General Electric announced that a US$17 billion bid for the company's power and grid divisions had been made and provisionally accepted. The proposed takeover became a political issue, with the French state intervening, enacting a decree, nicknamed décret Alstom, giving the French state additional powers to veto foreign takeovers. GE's bid was later modified, matching elements of a rival offer from Siemens and Mitsubishi Heavy Industries – with proposals to form 50:50 joint ventures in several divisions; the modified bid was also accepted by Alstom's board – at the same time the French state took a 20% stake in the company from Bouygues in order to protect its position. The GE acquisition deal for the power and grid division is expected to be finalized by early 2015. Wikipedia.
Alstom | Date: 2015-01-09
Aspects of a multi-level electrical distribution control system associated with an electrical distribution grid are disclosed. Data access and processing across the multi-level control system and the electrical distribution grid can provide improved utilization of energy within the electrical distribution grid. Further, dynamic reconfiguration of the electric distribution grid can be based distributed processing and access to information relating to the electrical distribution control system or electrical distribution grid. An encapsulated DNNC data element is disclosed as an efficient and secure means of accessing data across the multi-level electrical distribution control system or the associated electrical distribution grid.
Alstom | Date: 2015-07-24
Provided is a measurement system for measuring wetness of the gas phase of a two phase flowing fluid. The measurement system includes a container for containing the fluid flow having an inner surface with an average cross sectional area, a liquid film measurement device adapted to measure a flowrate of a liquid film of the two phase fluid through the container, an Electrical Capacitance Tomography device that has a plurality of electrodes located in the container, and a computer adapted to calculate the flowrate of the liquid film in the container. The measurement system calculates wetness of the gas phase based on a measurement of the Electrical Capacitance Tomography device and the calculated liquid film flowrate.
Alstom | Date: 2015-07-30
Alstom | Date: 2015-09-18
A turbine blade of a gas turbine includes a radially extending airfoil with a suction side and pressure side, which extend each in axial direction between a leading edge and a trailing edge of the airfoil. The leading edge is cooled by means of impingement cooling with rows of radially distributed jets of a cooling medium impinging on the inner side of the leading edge. The row of radially distributed jets is generated at an internal web, which divides the hollow interior of the airfoil into first and second cavities, with the second cavity being arranged at the leading edge. An enhanced cooling is achieved by the internal web that includes two rows of radially distributed cooling medium supply holes, through which cooling medium enters the second cavity in form of impinging jets. The cooling medium supply holes are oriented such that the directions of the jets of one row cross the directions of the jets of the other row.
Alstom | Date: 2015-12-09
The invention relates to a method for producing a three-dimensional article or at least a part of such an article made of a gamma prime () precipitation hardened nickel base superalloy with a high volume fraction (>25%) of gamma-prima phase which is a difficult to weld superalloy, or made of a cobalt base superalloy, or of a non-castable or difficult to machine metal material by means of selective laser melting (SLM), in which the article is produced by melting of layerwise deposited metal powder with a laser beam characterized in that the SLM processing parameters are selectively adjusted to locally tailor the microstructure and/or porosity of the produced article or a part of the article and therefore to optimize desired properties of the finalized article/part of the article.