A method and device for monitoring a fault of a wind power generator set. The method includes the following steps: performing (101) fault identification on a component in a wind power generator set; and presenting (102) an identified fault using a three-dimensional model of the component. The device includes corresponding identifying module (61) and presenting module (62). By using the method and device, the fault monitor can intuitively observe the fault existed in the component, which not only is beneficial for taking effective fault processing measures before a minor fault evolves into a serious fault and thus reduces the harm of the fault, but also reduces the experience requirements for the fault monitor and avoids the process that the fault monitor in the prior art analyzes a two-dimensional curve to identify whether there is a fault in the component according to his experience.

A floating electrical power generator having a three-dimensional (3D) flow passageway configured for increasing the water flow on the paddle wheel to increase the power output.

A floating electrical power generator having a three-dimensional (3D) flow passageway configured for increasing the water flow on the paddle wheel to increase the power output.

A modular, electricity generating apparatus comprises an elongate, central member comprising a first end and a second end; at least one foil disposed about the central member in fluid interacting relation thereto; the solar foil comprising an outer surface having photovoltaic properties; the first end and the second end dimensioned and configured to be connected to a connecting node; and, the elongate central member at least partially formed of an electrically conductive material and configured to conduct electricity from at least one of the connecting nodes to the other of the connecting nodes.

Some embodiments relate to a rotor blade of a wind turbine, a wind turbine having a rotor blade and a method for optimizing a rotor blade. Some embodiments relate to a rotor blade of a wind turbine, wherein the rotor blade has a leading edge, a trailing edge, a suction side and a pressure side, and extends in a longitudinal direction of a rotor blade between a root end and a tip end, wherein a direct connection between the leading edge and the trailing edge is termed the chord line and the length thereof is termed the chord length, wherein the rotor blade has at least one airfoil element, wherein the at least one airfoil element is arranged at the trailing edge with a proximal portion adjoining a trailing edge region and projects from the trailing edge with a distal portion having a projecting direction, which is oriented substantially parallel to the direction of the chord length, wherein the at least one airfoil element has an airfoil element thickness in a direction perpendicular to the projecting direction, wherein the at least one airfoil element has a pressure side airfoil side facing the pressure side and a suction side airfoil side facing the suction side, wherein the at least one airfoil element has a cross-section substantially orthogonal to the projecting direction, characterized in that the cross-section of the at least one airfoil element has at least one local minimum of the airfoil element thickness, wherein the airfoil element thickness in the cross-section on both sides of the local minimum has a larger value.

A construction system for mechanical metamaterials based on discrete assembly of a finite set of modular, mass-produced parts. A modular construction scheme enables a range of mechanical metamaterial properties to be achieved, including rigid, compliant, auxetic and chiral, all of which are assembled with a consistent process across part types, thereby expanding the functionality and accessibility of this approach. The incremental nature of discrete assembly enables mechanical metamaterials to be produced efficiently and at low cost, beyond the scale of the 3D printer. Additionally, a lattice structure constructed of two or more rigid, compliant, auxetic and chiral part types enable the creation of heterogenous macroscopic metamaterial structures.

A blade (104) for a rotor of a wind turbine is provided. The blade (104) comprises: a truss-like three-dimensional structure having strut members (108; 110; 112) forming the truss-like structure, wherein a plurality of the strut members (108; 110; 112) in the truss-like structure have an airfoil-shaped cross-section.

A method and device for monitoring a fault of a wind power generator set. The method includes the following steps: performing (101) fault identification on a component in a wind power generator set; and presenting (102) an identified fault using a three-dimensional model of the component. The device includes corresponding identifying module (61) and presenting module (62). By using the method and device, the fault monitor can intuitively observe the fault existed in the component, which not only is beneficial for taking effective fault processing measures before a minor fault evolves into a serious fault and thus reduces the harm of the fault, but also reduces the experience requirements for the fault monitor and avoids the process that the fault monitor in the prior art analyzes a two-dimensional curve to identify whether there is a fault in the component according to his experience.

A modular, electricity generating apparatus comprises an elongate, central member comprising a first end and a second end; at least one foil disposed about the central member in fluid interacting relation thereto; the solar foil comprising an outer surface having photovoltaic properties; the first end and the second end dimensioned and configured to be connected to a connecting node; and, the elongate central member at least partially comprised of an electrically conductive material and configured to conduct electricity from at least one of the connecting nodes to the other of the connecting nodes.

A submersible turbine generator unit can be placed in rivers, streams, or anywhere water flows in order to generate electricity without the need for dams. It is designed to work with its own diversion equipment for controlling and directing a flow of water into the turbine blades. The unit can be raised and lowered in the flow to enhance efficiency, respond to changing flow conditions, and for inspection/servicing, etc. The positioning system can use a motorized worm gear and a rack to raise or lower the turbine generator combination. Once raised up, a hard connection point allows attachment of a lifting cable so the turbine/generator combination can be easily removed and replaced as needed. A submersible turbine generator utilizes uniquely shaped turbine blades that efficiently engage flowing water and spin the turbine shaft without presenting undue risk to aquatic life.