9results about How to "Reduce electric power" patented technology

The invention discloses a multi-task PEM unmanned aerial vehicle energy scheduling method and system based on MPC and DDPG, and the method comprises the steps: building a stress model and a power model in each flight mode according to the flight mode of a hydrogen fuel cell unmanned aerial vehicle; establishing a mathematical model, an objective function and operation constraints of the hydrogen fuel cell unmanned aerial vehicle energy system; constructing an MPC model by combining the stress model and the power model of the unmanned aerial vehicle in each flight mode, collecting state parameters of the unmanned aerial vehicle, and obtaining electric power predicted by the MPC model; and constructing a DDPG model based on the mathematical model, the objective function and the operation constraint of the hydrogen fuel cell unmanned aerial vehicle energy system, and taking the predicted electric power as the input of the trained DDPG model to obtain an energy scheduling result. According to the invention, energy utilization can be optimized in a complex task environment, and the task completion efficiency and cruising ability of the unmanned aerial vehicle are improved.

The present invention discloses a low-voltage environmentally friendly condensation and filtering device, which relates to the field of filtering technology, wherein the low-voltage environmentally friendly condensation and filtering device comprises a movable seat, a control component and a filtering component; the technical scheme of the present invention is to respectively arrange a plurality of filter elements between a first electrode and a second electrode and between the second electrode and a grounding part, and to generate a weak current by energizing the first electrode and the second electrode and outputting a low voltage, so that the electric power generated between the filtering media becomes smaller, thereby reducing energy consumption, and generating a potential difference between the first electrode and the second electrode and between the second electrode and the grounding part, so that impurities are affected by the change of the electric field and aggregate into clusters, and the clustered impurities avoid passing through the gap in the filter element, thereby improving the filtering quality of the filter element.

The utility model belongs to the field of electrical technology, and particularly relates to a contact assembly and a circuit breaker, and the contact assembly comprises a moving contact which is provided with a moving contact, and the moving contact is located at one end of the moving contact; the static contact is provided with at least two static contact points, the at least two static contact points are sequentially arranged at one end of the static contact at intervals, and the static contact points and the movable contact points are arranged oppositely; wherein the moving contact can move towards the side close to or away from the static contact, so that the moving contact is in contact with the at least two static contacts. Contact resistance can be reduced, the heating phenomenon can be reduced, local energy accumulation can be avoided, and therefore the service life of the circuit breaker is prolonged, and the breaking capacity of the circuit breaker is improved.

The invention relates to the technical field of natural gas pressure energy recycling, in particular to a coupling device and method for natural gas liquefaction through gas field gas pressure energy. Comprising a pressure energy power generation system and a liquefaction process cold supply system. The pressure energy power generation system comprises an inlet, a pressure regulating system, an expansion power generation system and an outlet, the pressure regulating system and the expansion power generation system are arranged in parallel, the inlet is connected with the pressure regulating system and the expansion power generation system, and the pressure regulating system and the expansion power generation system are connected with the outlet; the liquefaction process cold supply system comprises a precooling refrigerant circulation system, a mixed refrigerant circulation system and a natural gas liquefaction heat exchange system. The utilization efficiency of pressure energy is improved, and the technological adaptability to natural gas parameter changes is also improved.

The present invention relates to a 220 kV transformer lead clamping structure for a middle outlet, belonging to the technical field of transformers. The technical scheme is as follows: a top-connected trapezoidal paperboard (1) is a double trapezoidal shape with two upper bottom edges connected together by a rectangular plate (10), the two trapezoids are bent toward the same side of the rectangular plate (10), the two lower bottom edges of the top-connected trapezoidal paperboard (1) are tied to a bottom paperboard (2) by a shrink band (8), the bottom paperboard (2) is tied to a transformer body (9) by multiple polyester binding bands (7), the high-voltage lead (4) is fixed to a rectangular plate between the two upper bottom edges of the top-connected trapezoidal paperboard (1) by a winged U-shaped fixing plate (5) and an insulating screw (6), and a flat paperboard (3) is provided between the winged U-shaped fixing plate (5) and the rectangular plate between the two upper bottom edges of the top-connected trapezoidal paperboard. The beneficial effects of the present invention are: the structure is simple and can meet the requirements of mechanical properties and electrical strength.

A heat exchanger system for operating a fuel cell stack is proposed, comprising: a first compressor and a second compressor for supplying cathode gas to the fuel cell stack, wherein the second compressor is fluidly arranged after the first compressor; a turbine mechanically coupled to the second compressor to which the discharged cathode gas from the fuel cell stack flows; a first heat exchanger thermally coupled to the cathode gas supplied between the first and second compressors; a second heat exchanger thermally coupled to the cathode gas supplied downstream of the second compressor; and a fourth heat exchanger thermally coupled to the discharged cathode gas downstream of the turbine; wherein the fourth heat exchanger is thermally variably coupled to the first and second heat exchangers to control the heat exchange for cooling the first and second heat exchangers.

The invention provides a three-phase steam turbine generator stator double-outgoing-line structure and steam turbine generator equipment, and relates to the technical field of steam turbine generators, and the structure comprises a stator, a first winding arranged on the stator, and an excitation end and a steam end located at two opposite ends of the stator. The first winding comprises a first sub-winding and a second sub-winding. The first sub-winding and the second sub-winding each comprise a plurality of first coils which are sequentially connected end to end. The first sub-winding is led out through the excitation end, the second sub-winding is led out through the steam end, and the electric signal transmission direction of the first coil in the first sub-winding is the same as the electric signal transmission direction of the first coil in the second sub-winding. Therefore, the double-outgoing-line structure is a double-end outgoing-line structure with outgoing lines at the excitation end and the steam end, the current of the stator is led out through the excitation end and the steam end, the current of each outgoing-line end can be greatly reduced, the electrodynamic force of the generator is effectively reduced, the leakage magnetic field and the electrical loss are reduced, and a series of problems caused by large current of the stator can be eliminated.

The utility model discloses a kind of steel aluminium pipe joints, including first pipe and second pipe, first pipe is steel pipe, the second pipe is aluminium pipe;First pipe and second pipe coaxially are arranged, and the tail end of the first pipe is opposite the head end of the second pipe;Sealing thread structure for fixedly connecting both between the tail end of the first pipe and the head end of the second pipe is equipped;In the utility model brazing welding sealing layer is the sealing layer formed by brazing process, which guarantees the sealing property of pipe joint, unlike the restriction influence of power grid electric power in prior art, brazing process in the application, electric power requirement is not high, and in brazing process in the application, as long as power allows, multiple pipe joints can be simultaneously brazed, to improve production efficiency and also can be quickly realized by cooperation of external thread and internal thread Interfacing and thread fixing, its fixing efficiency is high, there is no requirement to the thickness of first pipe and second pipe, and it is convenient and fast when connecting.

The application provides a three-phase turbo-generator stator double-outline structure and a turbo-generator device, and relates to the technical field of turbo-generators. The structure comprises a stator, a first winding arranged on the stator, and an excitation end and a steam end located at opposite ends of the stator. The first winding comprises a first sub-winding and a second sub-winding, and the first sub-winding and the second sub-winding each comprise a plurality of first coils connected in sequence in a head-to-tail manner. The first sub-winding is led out through the excitation end, the second sub-winding is led out through the steam end, and the electric signal transmission direction of the first coils in the first sub-winding and the electric signal transmission direction of the first coils in the second sub-winding are the same. It can be seen that the double-outline structure is a double-end outline structure with the excitation end and the steam end as the two ends, and the current of the stator is led out through the excitation end and the steam end, so that the current of each outline end can be greatly reduced, the electric power of the generator can be effectively reduced, the magnetic leakage field and the electrical loss can be reduced, and a series of problems caused by the large current of the stator can be eliminated.