Abstract:
Example embodiments of systems, devices, and methods are provided for energy systems having multiple modules arranged in cascaded fashion for generating and storing power. Each module can include an energy source and switch circuitry that selectively couples the energy source to other modules in the system for generating power or for receiving and storing power from a charge source. The energy systems can be arranged in single phase or multiphase topologies with multiple serial or interconnected arrays. Thermal management systems, switching assemblies, physical layouts of a module, and EV models based on a universal platform are also described.
Abstract:
Die Erfindung betrifft eine Anlage (1) zum Erzeugen einer Dreiphasenwechselspannung, aufweisend wenigstens eine Gasturbine (2), wenigstens einen mit der Gasturbine (2) angetriebenen Generator (3), wenigstens einen geregelten Direktumrichter (4), mit dem eine von dem Generator (2) erzeugte erste Dreiphasenwechselspannung mit einer ersten Frequenz in eine zweite Dreiphasenwechselspannung mit einer zweiten Frequenz, die höher als die erste Frequenz ist, umwandelbar ist, und wenigstens einen Frequenzfilter (5), mit dem in der zweiten Dreiphasenwechselspannung vorhandene Oberschwingungen aus der zweiten Dreiphasenwechselspannung herausfilterbar sind, wobei der Frequenzfilter (5) zumindest mittelbar mit einem Stromnetz (7) verbindbar ist, dessen Netzfrequenz höher als die erste Frequenz ist.
Abstract:
Subsea power supply assembly (10, 20) supplying electric power to a motor (11) at a second location (90) from a first location (80), comprising a variable speed drive (13) (VSD )and a step-up transformer (15) connected to it. At a subsea location the assembly comprises a first step-down transformer (17) withinput (17a) and output (17b)and an uninterruptable power supply (25) having an input (25a). A step-out cable (19) supplies power from the step-up transformer (15) to the motor (11). The cable(19) connects to the first step-down transformer (17). The speed of the electric motor (11) is proportional to the output frequency of the VSD(13). The power receiving input (25a) of the uninterruptable power supply (25) connects to the output (17b) of the first step-down transformer (17), thereby receiving electrical power with frequency equal to the output frequency of the VSD (13).
Abstract:
An auto-synchronous isolated inlet power converter (100a) is disclosed that can be daisy- chained with other power converters (100b-n) and/or an alternating current (AC) power source. The power converter (100a) automatically generates output AC power (195) that is in parallel with external input AC power (112) coming into the power converter (100a) when the power converter (100a) senses the external input AC power (112) so that the power converter (100a) operates as a slave. The power converter (100a) automatically generates output AC power (195) when the power converter (100a) fails to detect the external input AC power (112) coming into the power converter (100a) where the power converter (100a) operates as a master. The power converter (100a) generates the output AC power (195) without any reliance on the external input AC power (112) generated by a utility grid and/or other AC power sources external to the power converter (100a).
Abstract:
An electric multi-mode power converter module comprises an AC/DC converter, including a first AC port; a DC/AC converter, including a second AC port; a DC/DC converter, including a DC port; a controller; and a communication bus interconnecting the AC/DC converter, the DC/AC converter and the DC/DC converter. The controller further includes a hardware configuration port and is configured to set the power converter module in the following states, selected in dependency on the value read from the hardware configuration port: A first state in which the power converter module transfers power between the first AC port and the DC port, and in which the second AC port is disabled, a second state in which the power converter module transfers power between the DC port and the second AC port, and the first AC port is disabled, and a third state in which the power converter module transfers power between the first AC port, the second AC port and the DC port. A power supply system comprises a shelf device (20) including at least one compartment, and an electric multi-mode power converter module of the type mentioned above is inserted in the at least one compartment.
Abstract:
Methods and apparatus for supplying power to an electrical line or grid by using high-frequency alternating current (HFAC) are provided herein. In some embodiments, an apparatus for collecting and transmitting electrical power to an AC line operating at a line frequency may include a plurality of high frequency AC power sources; a high frequency AC bus, connected to each of the high frequency AC sources; and a line frequency converter, the input of which is connected to the high frequency AC bus and the output of which is connectable to the AC line.
Abstract:
The invention relates to electric power industry, in particular, to power systems with electrical alternating current networks, more specifically, to the methods of power systems interconnection. The basis of the present invention is the task to interconnect power systems with the help of the method that will allow to improve the reliability and quality of their functioning, as well as to minimize the financial costs associated with its implementation. The method of interconnection of power systems with AC networks, each of which is characterized by its technical characteristics of electricity through the use of at least one energy storage device (ES), which contains the equipment providing energy storage and its usage. According to the invention the equipment (3), providing energy storage and consuming electricity, is connected to one power system networks, and equipment (4) participating in the usage of stored energy and generating electricity is connected to the other power system networks, thus, ensuring possibility to change the position of these power systems.
Abstract:
L'invention concerne un réseau électrique d'un aéronef et un procédé de fonctionnement du réseau électrique. L'invention trouve une utilité particulière pour les avions commerciaux gros porteurs qui comportent de plus en plus d'équipements électriques embarqués. Le réseau comprend : • un bus alternatif (10), • un bus continu (12), • un redresseur (11) fournissant une tension continue au bus continu (12) à partir du bus alternatif, • une pluralité de convertisseurs bidirectionnels (O3 à O7) comportant deux points de raccordement, chaque convertisseur bidirectionnels (O3 à O7) étant raccordé en son premier point de raccordement au bus continu (12) et pouvant être raccordés en son second point de raccordement à une charge (13 à 17) de l'aéronef pour l'alimenter, le réseau pouvant être raccordé à au moins deux générateurs (G1, G2) susceptibles chacun de délivrer la tension alternative au bus alternatif au moyen du redresseur (11). Selon l'invention, le réseau comprend en outre au moins une liaison permettant de raccorder au moins un des générateurs (G1, G2) au second point de raccordement d'au moins un des convertisseurs bidirectionnels (O3 à O7). Le réseau permet de changer de générateur sans coupure et sans synchronisation particulière des générateurs (G1, G2).