Zacco Norway AS

The present disclosure provides a self-networking method for a module controller, and related devices, to improve the self-networking efficiency for the module controller. The self-networking method includes: obtaining a PLC link quality value between each module controller and a power converter and obtaining a PLC link quality value between the module controller and other module controller of the multiple module controllers; dividing the multiple module controllers into at least one module controller category based on the PLC link quality values, where each module controller category includes at least one candidate module controller, and the candidate module controller indicates a module controller having an actual physical connection with the power converter; and networking the candidate module controllers in the at least one module controller category by category to obtain a module controller network, where the module controller network includes multiple networked module controllers.

The present disclosure relates to the technical field of renewable energy, and provides a self-networking method for a module controller, and a related apparatus, to improve the self-networking efficiency for the module controller. The method includes: controlling a power converter to search for multiple initial module controllers; determining multiple candidate module controllers from the multiple initial module controllers, where the multiple candidate module controllers are obtained by filtering the multiple initial module controllers based on a communication link quality between the power converter and each of the multiple initial module controllers and a minimum quality requirement threshold; and networking the multiple candidate module controllers to obtain multiple networked module controllers.

The present disclosure relates to the technical field of renewable energy, and provides a self-networking method for a module controller, and a related apparatus, to improve the self-networking efficiency for the module controller. The method includes: controlling a power converter to search for multiple initial module controllers and obtaining a PLC link quality value between each initial module controller and the power converter, to obtain multiple PLC link quality values; filtering the multiple initial module controllers based on the multiple PLC link quality values and a minimum quality requirement threshold to obtain multiple candidate module controllers; and networking the multiple candidate module controllers to obtain multiple networked module controllers.

A control device, a computer-readable storage medium, a module-level power electronics apparatus, a new energy system, a power converter, and a control method for a power converter are provided, relating to the technical field of power electronics. The power converter, in a case that the power supply branch connected to the power converter includes at least two power supply strings connected in parallel, regulates a voltage of at least one of the power supply strings, and determines whether input voltages of module-level power electronics apparatuses in the corresponding power supply branch change. For a module-level power electronics apparatus, in normal cases, the input voltage of the module-level power electronics apparatus is constant; and in a case that an input open-circuit fault occurs for the module-level power electronics apparatus, the input voltage of the module-level power electronics apparatus changes due to an inter-string voltage difference between the power supply string where the module-level power electronics apparatus is arranged and other power supply strings connected in parallel to the power supply string. Thus, in a case that an input voltage of a module-level power electronics apparatus changes, it may be determined that an input open-circuit fault occurs for the module-level power electronics apparatus, thereby determining the input open-circuit fault.

A power conversion device, a method for determining a connection state of a power conversion device, a component controller, and a system are provided. The power conversion device includes: a DC input terminal and a control module. The DC input terminal is configured to be connected to a photovoltaic component through a component controller. The control module is configured to: transmit a voltage regulation instruction to the component controller; monitor an input terminal voltage of the DC input terminal connected to the component controller, where the voltage regulation instruction is used for indicating the component controller to regulate an output voltage based on the predetermined voltage change strategy; compare a measured voltage change of the input terminal voltage with a predetermined voltage change strategy; and determine a connection state between the DC input terminal and the component controller based on a comparison result. Therefore, it can be determined conveniently whether the DC side of the power conversion device and the component controller are open circuited.

A control method and a related apparatus are provided. The control method includes: determining actual maximum power limits of the multiple power units, in a process of the multiple power units outputting power with maximum output capacities; and issuing target unit power to the multiple power units respectively, based on the actual maximum power limits of the multiple power units; where the target unit power of each of the multiple power units is less than or equal to the actual maximum power limit of the power unit. The control method and the related apparatus can improve the rationality of power output distribution within the energy system.

A heat dissipation and flow guiding mechanism and a cabinet having the same are provided. The heat dissipation and flow guiding mechanism is configured for guiding a heat flow generated by an electrical device (10) and includes: a first enclosure structure (20) having a first accommodation cavity (22), and a second enclosure structure (30) located above the first enclosure structure (20) and having a flow guiding cavity (31). The first accommodation cavity (22) has a first opening (21) and is configured for mounting the electrical device (10), and the first accommodation cavity (22) is in communication with the flow guiding cavity (31) through the first opening (21). According to the present application, the influence of heat generated by a transformer in an exposed state in the related art on peripheral devices is effectively improved, and the heat dissipation capability of a transformer and an integrated all-in-one machine is further improved.

The invention relates to a surgical retractor device comprises a housing, a first press arm pivotably coupled to the housing, and a second press arm pivotably coupled to the housing, said first and second arm having a rotational movement in a first plane. Each press arm comprises a gripping member pivoting around an axis at a right angle with the first plane, at the outer end of each press arm, and an attachment means at the inner end of the arm, wherein the housing comprises an opening and closing mechanism.

The disclosure relates to a backrest for a seating furniture, comprising: a base part; a backrest part comprising: a flexible backrest section ; and an inflexible support section (1); wherein the inflexible support section is attached to the base part at a lower section thereof; wherein the flexible backrest section is attached via a pivot axis to the inflexible support section between an upper section and the lower section of the inflexible support section; an adjustment mechanism situated between a lower section of the flexible backrest section and the base part; wherein the adjustment mechanism comprises: a frame part slidably supported on the base part; a guide slit in the frame part, the guide slit (11) having an inclined alignment in relation to a direction of sliding movement of the frame part; and a peg attached to and protruding from the lower section (of the flexible backrest section, the peg extending into the guide slit; wherein sliding movement of the frame part causes the peg to move along the guide slit, thereby adjusting a shape of the flexible backrest section. The disclosure further relates to a method of adjusting a backrest shape.

An inverter, a short-circuit protection method for the inverter, and an energy system are provided. The inverter includes: a DC bus, configured to connect a DC source, where a semiconductor component is connected between the DC source and the DC bus; an inverter circuit, where a DC side of the inverter circuit is connected to the DC bus, an AC side of the inverter circuit is configured to connect a power grid via a designated relay; and a controller, configured to turn off the designated relay within a safe current breaking period of a short-circuit condition, in response to the short-circuit condition in which a DC line between the semiconductor component and the DC source is short-circuited to ground, or the DC source is short-circuited to ground, where during the safe current breaking period, a short-circuit current is 0 or less than a breaking current of the designated relay.