35results about How to "Improve power generation stability" patented technology

Fuel cell stack and method of producing dummy cell. A fuel cell stack at least includes a stack body including a plurality of power generation cells each having a membrane electrode assembly stacked in a stacking direction, and a first dummy cell provided at one end of the stack body in the stacking direction. A dummy structural body of the first dummy cell is joined to a dummy resin frame memberthrough an adhesive layer which adheres a first outer peripheral portion and a second outer peripheral portion, and inner periphery of the dummy resin frame member to each other.

The embodiment of the invention provides a data center machine room system. The data center machine room system comprises a machine room body, a temperature measuring device and a modified standby small wind power generator, wherein the temperature measuring device comprises a temperature measuring fiber and a fiber demodulator; the machine room body is provided with a fiber cabling rack, and thetemperature measuring fiber is disposed around a server, a network switch, and a memory along the fiber cabling rack; and the fiber demodulator is connected with the temperature measuring fiber, and atemperature signal of each temperature measuring point on the temperature measuring fiber is collected in real time, and each temperature signal is converted into an electrical signal and is transmitted to a monitor terminal through a communication interface. Through the data center machine room system, the construction efficiency of a data center machine room is improved, the power generation stability of a standby power is improved, the power generation power is improved, and meanwhile, the change of the ambient temperature in the machine room body can be comprehensively monitored in real time.

The invention provides an ultra-flexible self-generating yarn, an all-fiber-based ultra-flexible temperature-difference self-generating fabric and a preparation method thereof. The ultra-flexible self-generating yarn adopts P-type thermoelectric material composed of PEDOT:PSS and ionic liquid to coat and modify the fiber or yarn, which significantly improves the film-forming property of PEDOT:PSS, and also enhances the flexibility of the yarn. improve its thermoelectricity. The N-type thermoelectric material and the above-mentioned P-type thermoelectric material are coated adjacent to the surface of the yarn substrate, and are connected by electrodes to form a series thermoelectric path. The flexibility, thermoelectricity and stability of power generation of the all-fiber-based ultra-flexible thermoelectric self-generating fabrics thus prepared are significantly improved, providing an effective way for the all-fiber-based ultra-flexible thermoelectric self-generating fabrics. Therefore, as a power source, it has high promotion and application value in the fields of sensor device power supply, smart clothing, and wearable electronic devices.

In a fuel cell stack, a stack body includes a plurality of power generation cells stacked in a stacking direction, and a first dummy cell is provided at one end of the stack body in the stacking direction. The first dummy cell includes a dummy assembly, a dummy resin frame member, and a dummy joint separator. The dummy resin member includes a first resin sheet and a second resin sheet. An inner exposed portion is provided in an inner periphery of the first resin sheet. The inner exposed portion extends inward beyond an inner end of the second resin sheet. A first heat welding portion is provided discontinuously in a stack part where the inner exposed portion and the first electrically conductive porous sheet of the dummy assembly are stacked together. The dummy resin frame member and the dummy assembly are joined together by the first heat welding portion.

A fuel cell stack includes a stack body of power generation cells stacked in a horizontal direction. An oxygen-containing gas flow field is formed in the fuel cell stack, for allowing an oxygen-containing gas to flow along an electrode surface of a membrane electrode assembly. A plurality of oxygen-containing gas discharge passages for discharging the oxygen-containing gas as a reactant gas pass through the fuel cell stack in a stacking direction of the power generation cells. Each of the oxygen-containing gas discharge passages is connected to an outlet. The plurality of oxygen-containing gas discharge passages are connected together by a first connection channel at an end opposite to the outlet.

The invention discloses an alternating current-direct current hybrid flexible power distribution network reliability calculation method. The method comprises the following steps that a starting pointand an end point of a reliability calculation path of a distribution unit are determined; a power distribution network reliability module is divided, wherein components weak in influence on reliability or consistent influence result are divided into a basic module; key factors of the influence on the reliability are divided into a separate block; a single line mode of a flexible direct current transmission system and a three-way parallel connection mode including flexible and straight loops are determined, a load transfer method is determined; according to the connection mode of the distribution unit, a series sub-path and the minimum path set of each calculation load point are determined, and then the outage times and power supply availability of each load point are obtained through calculation; finally, the average index value of the load points is calculated to obtain the overall reliability index of the distribution unit. Accordingly, the reliability of the power distribution network can be greatly improved, and the method can adapt to development of future distributed power supply, energy storage and direct current load in a high reliability power supply area.

The invention discloses an islanding protection method of a photovoltaic power generation system. The method is an active islanding protection technology based on dual vector angles. The voltage vector angle obtained before disturbance and the voltage vector angle obtained after disturbance are adopted by the technology, and disturbance components are extracted and blended in the Sandia islanding protection technology. The method not only improves the islanding protection performance of the photovoltaic system, but also overcomes the shortcoming of active power fluctuation caused by a traditional phase perturbation algorithm, and improves the output power performance of inverters in the normal operating process.

The invention discloses a new energy magnetic power generator set, which comprises a support base and a generator housing, the generator housing is arranged in the support base, and a plurality of first For the connection part, a plurality of second connection parts corresponding to the first connection parts are arranged on the support seat and around the axis direction of the support seat. A spherical groove is opened on the left end surface of the second connection part, and the inner wall of the spherical groove A buffer layer is provided, and a sphere is arranged in the buffer layer; a spring B is arranged on the top of the first connecting part, and the other end of the spring B is fixed with a disc body, and the disc body is fixed in the arc-shaped groove. The invention has long service life, compact structure, avoids collision between the support seat and the generator casing, and supports stably.