摘要:
The present invention is directed to a device for heat treatment of objects. It comprises a susceptor for receiving an object in the form of a substrate and a gas mixture fed to the substrate for epitaxial growth of a crystal on said substrate by Chemical Vapor Deposition. The susceptor includes an inner wall and an outer, circumferential wall enclosing the inner wall at a distance therefrom. The inner wall defines a chamber for receiving the object. An enclosed space is formed between the inner and outer wall, and is filled with a powder. The powder is made of SiC, a group III nitride or alloys thereof. Also, for heating the susceptor and thereby also the object, a Rf-field radiator is provided surrounding the susceptor.
摘要:
The present invention is directed to a device for heat treatment of objects. It comprises a susceptor for receiving an object in the form of a substrate and a gas mixture fed to the substrate for epitaxial growth of a crystal on said substrate by Chemical Vapor Deposition. The susceptor includes an inner wall and an outer, circumferential wall enclosing the inner wall at a distance therefrom. The inner wall defines a chamber for receiving the object. An enclosed space is formed between the inner and outer wall, and is filled with a powder. The powder is made of SiC, a group III nitride or alloys thereof. Also, for heating the susceptor and thereby also the object, a Rf-field radiator is provided surrounding the susceptor.
摘要:
The invention relates to a method in which proton or ion implantation is used for restructuring a silicon carbide region from being conductive to being resistive and wherein this implantation method is used for manufacturing a semiconductor device which comprises a p-n junction where both the p-conductive and the n-conductive layers are designed as doped layers of silicon carbide (SiC), whereby the implantation method is used for at least one of the steps passivation of a silicon carbide surface of the device with a semi-insulating layer, definition of the area of the p-n junction during manufacture, termination of the edges of the p-n junction by means of a semi-insulating layer, creation of a positive edge angle at the edge of the p-n junction, and insulation of different devices from one another during manufacture of a plurality of devices on one and the same wafer of filicon carbide, wherein the invention also relates to the implantation method proper.
摘要:
A cassette (1) for a battery stack (3), comprising a casing (2) for a battery pack (4), which casing (2) is made of a non-conducting material. The casing (2) has a front side (5) with an opening (6) for receiving the battery pack (4). Preferably, the casing (2) has a back side (7), opposite the front side (5), the back side (7) being provided with electrical connections (8, 9) leading into the casing and arranged to connect to the poles of a battery pack (4) when a battery pack (4) is inserted into the casing (2) through the front side (5). Arrangement of the cassettes (1) is also provided, wherein the cassettes in the arrangement is placed in mechanical connection on top of each other.
摘要:
A power compensator (1) for an electric power transmission line (3), comprises a voltage source converter (4), capacitor means (6) and an energy storage device (5). The energy storage device comprises a high voltage battery means having a short circuit failure mode, a first (40a) and second main switch (40b) for disconnecting the battery means from the capacitor means, and a control unit (44) for operating the first and second switch.
摘要:
A method for producing a bipolar semiconductor device having a first layer (3) doped according to a first doping type, said first layer being adapted to have minority charge carriers injected thereinto from a second layer (5) of the device of an opposite doping type to that of the first layer in a forward conducting state of the device, comprises a step of epitaxially growing said first layer during which at least one region (4) of said first layer is provided with a constitution implying a lower lifetime of said minority charge carriers therein than in other parts of said first layer by incorporating impurities in said region during the epitaxial growth thereof.
摘要:
The invention relates to a battery energy storage system comprising a control unit (7a-c, 12a-c, 17) and a plurality of battery units (2a-c). The battery units (2a-c) are arranged in series, and each battery unit (2a-c) comprises at least one semiconductor switch (23) and at least one battery module (22) comprising a plurality of battery cells (22). Each battery module (22) is connected in series with a respective semiconductor switch (23), and the control unit (7a-c, 12a-c, 17) is operatively connected to the at least one semiconductor switch and adapted to control the at least one semiconductor switch (23) of every battery unit (2a-c).