Abstract: A communication device can be used for communicating between a power equipment controller and power equipment devices of a high-voltage power electronics system. The communication device includes a controller interface communicatively coupled with the power equipment controller, an RF module coupled to the controller interface, and an antenna port coupled to the RF module. A mounting structure is configured to attach the communication device to a valve hall containing the power equipment devices. The mounting structure is permeable for RF signal communication between the communication device and power equipment devices in the valve hall. The mounting structure has a low voltage side to enable placement of the controller interface, the RF module and the antenna port so as to be shielded from disturbances due to high voltages inside the valve hall.

Abstract: A communications network for communication between at least one power electronics element and at least one control unit is disclosed. According to one or more embodiments, the communications network can be described as a communications network having parts or portions thereof employing multi-hop and/or hybrid communication.

Abstract: A communications network for communication between at least one power electronics element and at least one control unit is disclosed. At least one transmit/receive unit of the communications network is configured to receive at least one signal from an upstream direction, and evaluate if the at least one signal is correctly received. In case the at least one signal is correctly received, the at least one transmit/receive unit is configured to forward, in an allocated first time slot, the at least one signal to a plurality of transmit/receive units in a downstream direction, and receive, in an allocated second time slot, a plurality of signals from the plurality of transmit/receive units as a response of the forwarded at least one signal.

Abstract: A communication device can be used for communicating between a power equipment controller and power equipment devices of a high-voltage power electronics system. The communication device includes a controller interface communicatively coupled with the power equipment controller, an RF module coupled to the controller interface, and an antenna port coupled to the RF module. A mounting structure is configured to attach the communication device to a valve hall containing the power equipment devices. The mounting structure is permeable for RF signal communication between the communication device and power equipment devices in the valve hall. The mounting structure has a low voltage side to enable placement of the controller interface, the RF module and the antenna port so as to be shielded from disturbances due to high voltages inside the valve hall.

Abstract: There is provided mechanisms for utility communications. A method is performed by a transmitter. The method includes superimposing a control and protection signal for utility communications on top of an existing optical signal transmitted over an optical fiber to form a composite signal, wherein the control and protection signal has lower bit rate than the existing optical signal. The method includes obtaining feedback by draining a portion of the composite signal from the optical fiber. The method includes adjusting amplitude of the control and protection signal according to the portion of the composite signal.

Abstract: A communications network for communication between at least one power electronics element and at least one control unit is disclosed. According to one or more embodiments, the communications network can be described as a communications network having parts or portions thereof employing multi-hop and/or hybrid communication.

Abstract: A communications network for communication between at least one power electronics element and at least one control unit is disclosed. At least one transmit/receive unit of the communications network is configured to receive at least one signal from an upstream direction, and evaluate if the at least one signal is correctly received. In case the at least one signal is correctly received, the at least one transmit/receive unit is configured to forward, in an allocated first time slot, the at least one signal to a plurality of transmit/receive units in a downstream direction, and receive, in an allocated second time slot, a plurality of signals from the plurality of transmit/receive units as a response of the forwarded at least one signal.

Abstract: There is provided mechanisms for utility communications. A method is performed by a transmitter. The method includes superimposing a control and protection signal for utility communications on top of an existing optical signal transmitted over an optical fiber to form a composite signal, wherein the control and protection signal has lower bit rate than the existing optical signal. The method includes obtaining feedback by draining a portion of the composite signal from the optical fiber.

Abstract: A gate control device for a semiconductor device includes at least one power supply module, at least one optical communication interface for receiving optical signals from two valve control units and converting them to electric signals for supply to a corresponding power supply module, where in normal operations mode one valve control unit is an active valve control unit and the other is a standby valve control unit, where the optical signal of an active unit energizes the gate control device and provides semiconductor device controlling data, a semiconductor device control module and a reliability control module that performs selection of active valve control unit.

Abstract: A gate control device for a semiconductor device includes at least one power supply module, at least one optical communication interface for receiving optical signals from two valve control units and converting them to electric signals for supply to a corresponding power supply module, where in normal operations mode one valve control unit is an active valve control unit and the other is a standby valve control unit, where the optical signal of an active unit energizes the gate control device and provides semiconductor device controlling data, a semiconductor device control module and a reliability control module that performs selection of active valve control unit.

Abstract: Apparatus is disclosed for feeding product carriers through a system including a first rail along which the product carriers can move, branches associated with the first rail so that the product carriers can be supplied to and removed from the first rail along the branches, an endless belt for moving the product carriers along the first rail, and a second rail disposed above the first rail, the endless belt including downwardly extending sides and being suspended from the second rail whereby the downwardly extending sides of the endless belt are accessible for driving of the endless belt thereby.

Abstract: The invention relates to a tower (1) serving as an antenna carrier and having a space (3) for electronic equipment, such as radio equipment, provided in connection therewith, whereby the tower (1) is formed of a number of interconnectable, generally ring-shaped sections (2, 2a, 3, 3a) of which a lower section (3) forms an electronic equipment integrated in the tower (1).

Abstract: A product carrier for carrying products includes a suspending member for suspending said products, a transporting device for transporting the suspending member in a direction of travel, a protecting plate associated with the suspending member for protecting the products, and a spacer element projecting from the protecting plate for maintaining the protecting plate in a spaced relation from an adjacent product carrier so as to protect the product from the adjacent product carrier.