97results about How to "Optimize power distribution" patented technology

A multi-layer composite electrode for a light-emitting device, comprising: a transparent, conductive layer; a reflective, conductive layer in electrical contact with the transparent, conductive layer; and a light-scattering layer formed between the transparent, conductive layer and the reflective, conductive layer over only a first portion of the transparent, conductive layer, wherein the light-scattering layer is relatively less conductive than the reflective, conductive layer and the reflective, conductive layer is in electrical contact with the transparent, conductive layer over a second portion of the transparent, conductive layer where the light-scattering layer is not formed. Also disclosed is a method of making such a multi-layer composite electrode in a light emitting device, and an organic light-emitting diode (OLED) device comprising such a composite electrode.

The invention discloses a single pulse wide angle electric scanning reflective array antenna comprising a reconfigurable reflective array surface (1), a polarization grid (2), a bias voltage circuit (3), a wave control machine (4), a control processor (5) and a feed source subsystem (6). The size of the caliber of the polarization grid (2) is equal to that of the caliber of the reconfigurable reflective array surface (1), and the polarization grid (2) is positioned above the reconfigurable reflective array surface (1). A radiation aperture surface of a feed source (61) is parallel and level to the reconfigurable reflective array surface (1) and is positioned at the center of the reflective array surface. The single pulse wide angle electric scanning reflective array antenna adopts a spatial feed mode, that is to say, the feed source irradiates the polarization grid and feeds the array surface after reflection. A polarization grid structure is applied to a reconfigurable reflective array antenna, and the feed source, the polarization grid and the reflective array surface form a double reflective structure, therefore, the performance of an antenna structure is excellent, the antenna structure can facilitate the installation of an antenna port and the connection of the antenna port and a radar system, and the antenna is compact in structure with a low section.

The invention discloses a distribution network expansion planning method considering the optimized operation of a regional integrated energy system. Firstly, a regional integrated energy system modelis established and the internal energy flow relationship is analyzed. Secondly, based on the multi-agent system, a three-layer interactive structure including the main layer, the regional layer and the device layer is built to realize the interaction of different entities on the spatial scale. Then, a bi-level optimization model is established for the distribution network with residential, commercial and industrial regional integrated energy systems. The upper level is used for the expansion planning of distribution network, and the lower level is used for the optimization operation of regional integrated energy systems. Genetic membrane algorithm and sequential quadratic programming are used to solve the upper and lower level models nested nested. Finally, the simulation example shows that the distribution network planning considering the optimal operation of regional integrated energy system can reduce the total cost of planning, improve energy efficiency and new energy consumption rate.

The invention discloses a parallel power distribution control method for a synchronous generator inverter. Based on the steady-state droop characteristic of an active-frequency control strategy of a VSG, an equivalent droop coefficient which is a formula as shown in the specification is obtained; by means of setting the equivalent droop coefficient to be inversely proportional to the inverter capacity, proportional distribution of the active power of the parallel inverters is realized; by adjusting the offset of a droop curve by a distribution consistency algorithm, convergence of the per-unit value of the reactive power of each parallel inverter is realized; and reasonable active and reactive power distribution of the parallel inverters with the synchronous generator characteristic is realized. The power distribution control strategy provided by the invention has high robust performance, high reliability and good power distribution effect, and provides a feasible solution for parallel control of the inverters in the microgrid island operating mode.

The invention discloses a wireless information and power transfer system maximum safety rate optimization method based on NOMA; the method comprises the following steps: firstly, a wireless information and power transfer system based on the NOMA is provided, the system is provided with a cell base station BS, M information receivers IRs and K energy receivers ERs, wherein the ER obtains energy from a radio frequency signal transmitted by the BS and eavesdrops on the information sent by the BS to the IR; according to the principle of the NOMA technology, the information transmitted by the BS tothe IR transmits a signal through a superposition coding technology, and the expression is as follows: formula; in the formula, am is the signal transmission power distribution coefficient of the mthIR, P is the signal transmission total power of the BS, xm is the confidential information of the mth IR, and sigma 2 is the additive gaussian white noise; and an optimization parameter AM is adjusted according to the method, certain energy can be provided for the ER, and a certain information rate is provided for the IR; and the purpose of providing the maximum safety information rate is provided for the IR in the case of the ER eavesdropping on information.

The invention discloses a subsynchronous resonance TCSC (Thyristor Controlled Series Compensation) device of a transmission line inhibition system. The invention provides a controllable series compensation technology. A power transmission line is additionally provided with a controllable thyristor valve; a series condenser block and an inductor controlled by the thyristor valve are connected in parallel so as to form the TCSC device. The thyristor valve is a controllable element, so that the slide control over the total impedance of the TCSC device can be realized by virtue of controlling the conduction and the shutoff of a thyristor in the thyristor valve; and compared with fixed series compensation, the subsynchronous resonance of the system can be inhibited more effectively, the transmitting capacity and the transient stability of the system are improved, and the effects of reducing the linear reactance and improving the power distribution can be achieved.

An imaging lens comprises, in order from an object side: a first lens having a positive refractive power and a meniscus shape and having a convex surface directed to the object side; a second lens having a negative refractive power in the vicinity of an optical axis of the imaging lens; and a third lens having a positive refractive power in the vicinity of the optical axis, wherein at least one surface of each of the second lens and the third lens is an aspheric surface; and the imaging lens satisfies the following conditional expression expressions:0.7<|f1 / f|<0.8   (1)0.3<|f2 / f|<0.8   (2)75<νd1<96   (3)TL / 2Y<0.9   (4)wheref: focal length of the imaging lens;f1: focal length of the first lens;f2: focal length of the second lens;νd1: Abbe number of the first lens for the d-line;TL: length between the object-side surface of the first lens to an image forming position of the imaging lens; andY: maximum image height.

The invention provides a power station power automatic control method and system. The method comprises the steps that S1 the operation state of charging piles is monitored in real time, if a charging pile starts charging, the step S2 is carried out, and if a charging pile stops charging, the step S3 is carried out; S2 the total charging power of charging piles which are in charging and start charging is calculated; if the total charging power is within a control power threshold, the rated power of the corresponding gun is allocated to the charging pile which starts charging and the step S1 is carried out, otherwise the charging power of all charging piles in charging is preallocated to charging piles which are in charging and start charging; according to the minimum power of the gun of each charging pile and the available total rated power, the pre-allocated power is adjusted and output, and the step S1 is carried out; and S3 the charging power of charging piles which stop charging is preallocated to other charging piles in charging; the preallocated power is adjusted and outputted according to the rated power of the guns of charging piles in charging; and the step S1 is carried out. According to the invention, the shortage of charging station resources can be alleviated.

The invention discloses a power transmission system of an all-wheel-drive hybrid power car. The power transmission system comprises a front drive system and a rear drive system. The front drive system comprises an engine, a generator and a front drive motor, wherein the engine is in transmission connection with the generator, a power output side of the engine and a power output side of the front drive motor are connected through a clutch, and an output side of the front drive motor is in drive connection with front wheels. The rear drive system comprises a rear drive motor used for driving rear wheels. The front drive system and the rear drive system of the power transmission system carry out drive independently, a power divider is not needed, and the structure of the transmission system is simplified. In the front drive system, the power of the engine and the front drive motor is switched on and off through the clutch, and after disengagement of the clutch, the idling stop function of the front drive system can be realized. The invention further discloses the all-wheel-drive hybrid power car comprising the power transmission system.

An improved three-pass cylinder drying machine comprises a machine body composed of a bracket, a sealed tank and a cylinder body, and a driving device, a supporting device and a controller, wherein the axial line of the cylinder body of the machine body is parallel to the horizontal surface, an inner cylinder and an outer cylinder that are concentrically arranged are assembled together in a staggered way to form the cylinder body, the formed cavities are used as three drying and precipitation units, the adjacent wallboards of the inner, middle and outer cylinders are connected and positioned via regulating and supporting plates and reinforced buffer plates, a heat insulating cover is disposed at the outer periphery of the wallboard of the outer cylinder, three material homogenizing and spreading machines are respectively disposed at the inner surfaces of the inner, middle and outer wallboards in a screw propulsion way and has reversed helical lines, and gears at the outer periphery of the machine body are aligned with the center of gravity of the cylinder. The inventive three-pass cylinder drying machine effectively solves the shortcomings of the conventional cylinder drying machine, including high deformation and misplacement liability and high axial dislocation liability; and has the advantages of reasonable structural design, stable performance, large precipitation range for one time, high thermal efficiency, saved energy consumptionand wide application range.

The invention discloses a plane multi-port power divider which comprises a plurality of radio frequency transmission lines consisting of metal strip lines and metal plates. Each metal strip line comprises a main input port and N output ports, wherein an annular strip line used for impedance matching is arranged between the main input port and the N output ports; the main input port is connected with the annular strip line by M parallel branch strip lines; the annular strip line is connected with the N output ports by N output branch strip lines; resistors are arranged between at least two of the output branch strip lines; and each resistor is connected with the two output branch strip lines by resistor connecting strip lines; M is greater than or equal to 3 and N is greater than or equal to 1. The power divider has the characteristics of small size and high isolation; the insertion loss of the power divider can be reduced by size reduction; the isolation between array unit channels can be improved by improving the isolation of the output ports of the power divider, so that the influence of mutual coupling between antenna array units is reduced, and the radiation performance is improved; and in addition, the power divider is in a pure plane structure, is easy to process and excellent in engineering practical value.

The invention provides a communication method, device and system for information and energy cooperative transmission, an unmanned aerial vehicle, and an unmanned aerial vehicle. The communication method for information and energy cooperative transmission comprises the following steps: initializing power distribution and a flight path of the unmanned aerial vehicle and a first cooperative throughput between a source point transmitter and a terminal point receiver, and then optimizing and calculating optimal decision distribution, optimal power distribution and optimal flight path of the unmanned aerial vehicle according to the power distribution, the flight path and the first cooperative throughput, and finally carrying out cooperative communication according to the optimal decision distribution, the optimal power distribution and the optimal flight path. According to the communication method for information and energy cooperative transmission, wireless energy-carrying communication isintroduced into unmanned aerial vehicle auxiliary communication, so that energy limitation of the unmanned aerial vehicle can be effectively relieved by obtaining wireless energy from a radio signal transmitted by an information source point, and the cooperative throughput between a source point transmitter and a terminal point receiver is maximized.

A light-storage-type charging station quasi-proportional-resonant (PR) droop control method based on an SOC (State of Charge) relates to the technical field of micro power grids and aims to solve a technical problem of regulation control of an alternating inverter. The method is characterized in that a quasi-PR droop control formula is used to calculate a phase angle offset and a voltage offset of the alternating current side of the alternating current inverter, and the phase angle offset and the voltage offset of the alternating current side of the alternating current inverter are added to a rated voltage and a rated phase angle of the alternating current side respectively through an auto-PI link, so that a three-phase voltage reference signal is obtained; the three-phase voltage reference signal is converted into a component in a two-phase stationary frame, the subtraction between the component and a corresponding component practical voltage is conducted, and by means of calculation of a quasi-PR controller, a current reference signal in the two-phase stationary frame is obtained; and the subtraction between the current reference signal in the two-phase stationary frame and a corresponding component practical current is conducted, and a reference signal of an output voltage is obtained by a proportional (P) regulator, so that the regulation control of the alternating current inverter is achieved. The method provided by the invention is suitable for light-storage-type charging stations.

The invention relates to a loader quantitative-variable hydraulic system and aims to overcome the defect that the input power of a variable pump in the existing quantitative-variable hydraulic system accounts for a large amount. The invention further discloses a power control valve. A first cavity in a valve body is communicated with a port PLS and acts on the right end of a main valve element. A valve element spring is disposed at the left end of the main valve element. A valve sleeve sleeves the main valve element. A second cavity is communicated with a port P1 and acts on the right end of the valve sleeve. A third cavity is communicated with a port P and acts on the left end of the valve sleeve. A valve sleeve spring provides leftward elastic force for the valve sleeve. An oil drainage passage communicated with the third cavity and a port T are formed in the main valve element and the valve sleeve. When the main valve element moves leftwards relative to the valve sleeve, the oil drainage passage is communicated. When the main valve element moves leftwards relative to the main valve element, the oil drainage passage is reduced or closed. The power control valve has the advantages that the valve sleeve and the main valve element form a follow-up mechanism, the input power of the variable pump of the loader quantitative-variable hydraulic system can be controlled by the power control valve, and the input power is prevented from accounting for a large amount.

In a method of allocating power to data streams in a communication system, providing (S10) CQI for each of a plurality of data streams between a radio base station node and a user equipment node in the system. Subsequently, allocating (S20) transmit power to each of the plurality of data streams based at least on the provided respective CQI, and determining coding and modulation (S30) for the data streams based on at least the allocated power.

The invention provides an optimization method of power distribution in an accessing strategy of wireless relays of the internet of things. The method includes that in a local region of the internet of things, multiple nodes of the internet of things share a node in a wireless mode to be accessed to an application scenarios of a public cellular network, a model of attenuation channel capacity is adopted, the maximum channel capacity serves as the optimization method, and joint optimization of the power distribution is carried out on multiple access channels and multiple node relay channels in the scenarios. Due to the fact that a control device is relatively simple, the optimization method of the power distribution has the advantages of being rapid and brief, and requirements of the power optimization in the scenarios of the internet of things are met.

An improved three-pass cylinder dryer, including a body composed of a bracket, a sealed box and a cylinder, and its driving device, supporting device and controller, wherein the axis of the cylinder of the body is parallel to the horizontal plane, and the cylinder is arranged concentrically. The inner, middle and outer cylinders are misplaced and fitted together, and the volume cavities formed constitute three drying and dewatering units respectively. The adjacent wall panels of the inner, middle and outer cylinders are adjusted by supporting and reinforcing buffer pads. Connection and positioning, the outer circumference of the outer cylinder wall board is provided with a heat insulation cover, and the inner peripheral surface of the inner, middle and outer cylinder wall boards is respectively provided with a spiral propulsion spreader, and the rotation of the helix On the contrary, the ring gear on the outer periphery of the machine body is assembled with the center of gravity of the barrel. It effectively solves the defects of easy deformation and displacement and axial displacement of traditional drum dryers. It has reasonable structural design, stable performance, smooth process flow, large precipitation at one time, high thermal efficiency, energy saving and consumption reduction, and a wide range of applications. .

The invention relates to a method of activating a mountable hydraulic appliance, and to such mountable hydraulic appliance for the shearing or crushing of structures, in particular for demolition, communication or recycling, said appliance having an upper jaw and a lower jaw at least one of which is pivotally hinged on a bearing axis arranged on the housing, the hinged jaw being activated by a first hydraulic cylinder and by at least one further hydraulic cylinder acting thereon so as to be moved from an open position to a cutting position and / or a closed position and vice versa, the hydraulic cylinders which act upon the hinged jaw being either pressurised simultaneously, or the initiation of a closing movement of the at least one hinged jaw from an open position being such that initially only one hydraulic cylinder is pressurised and, as the required compression force increases during the closing movement, the at least one further hydraulic cylinder is equally pressurised.

The invention discloses an energy sharing and power distribution method of an EH distributed base station system. A definition is shown in the description, N is the number of remote antenna elements;M is the number of antennas configured for each remote antenna unit; gi is an M * 1 dimension channel vector; wi is a beamforming column vector of the remote antenna element i, the length is M and | |wi | |<2>=1. The method is obtained by solving the following optimization problem: (shown in the description). The present invention can realize the share of the collected energy of the EH distributebase station system among the components within the system, on the premise of minimizing the power supply of smart grid, the optimal power distribution can be obtained and the transmission rate of the system can be improved. Moreover, by preferentially using the collected energy, the dependency on smart grid and the cost of distributed base station system are reduced.

The invention provides a control method of a hybrid energy storage system for stabilizing intermittent power fluctuation. According to the method, a power acquisition module is utilized to acquire the output power P of an intermittent power supply in real time. The method includes the specific steps that (1) the stabilized target power Pg (k) of the intermittent power supply is acquired; (2) the power magnitude and the SOC of the hybrid energy storage system are analyzed; (3) the output power P is stabilized according to the output power magnitude and the SOC of the energy storage system. Compared with the prior art, according to the control method of the hybrid energy storage system for stabilizing intermittent power fluctuation, power fluctuation can be simply and efficiently stabilized, and power generation stability and reliability of the intermittent power supply are improved.

The invention discloses a power domain NOMA cooperative transmission method and device based on bit error rate fairness. The method comprises the following steps: establishing a transmission system model; carrying out boundary simplification processing on the received signal of the destination node to obtain upper boundaries of the detection signal and the noise signal; decomposing the upper boundaries of the detection signal and the noise signal into sub-signals containing two independent random variables respectively, wherein the two independent random variables obey the exponential distribution of preset parameters respectively; calculating a moment mother function of a detection signal, simplifying the moment mother function, obtaining an error rate closed-form boundary formula according to the simplified moment mother function, and calculating a closed-form solution of an average symbol error rate through the error rate closed-form boundary formula. According to the method, the service quality of weak users can be improved, the error rate closed boundary formula with a simple structure is obtained, the performance of the error rate can be adjusted through the formula, the fairness and high signal-to-noise ratio conditions of the users can be met, and then the optimization of power distribution and the expansion of various scenes are realized.

The invention discloses a complex air mixing device for a subway air conditioner. The complex air mixing device comprises a shell and a filter system, the shell is provided with a fresh air port, an air return port and an air outlet, and the filter system comprises a primary filter section, a secondary filter section, an electret filter section and an electrostatic filter section. The primary filter section and the secondary filter section are arranged at the fresh air port, the electret filter section is arranged at the air return port, and the electrostatic filter section is arranged at the air outlet. A power supply module is arranged on the top wall of the shell, and a particulate matter concentration detector is arranged in the shell, electrically connected with the power supply module and positioned between the electret filter section and the electrostatic filter section. The complex air mixing device is capable of efficiently filtering fine particulate matters in fresh air and returned air and has bactericidal, sterilizing and odor eliminating functions to truly guarantee physical health of passengers in carriages. In addition, the complex air mixing device has a synchronous detection function, electric energy distribution and energy saving are realized, completeness of an air conditioner set can be guaranteed, and convenience in assembly and utilization is achieved.

The invention discloses a correlation rotation precoding method applied to a GFDM communication system. The problem of relatively low symbol error rate transmission performance of a generalized frequency division multiplexing GFDM communication system in the prior art is mainly solved. The related rotation precoding method comprises the following specific steps: (1) constructing an autocorrelation matrix; (2) constructing a zero forcing precoding matrix; (3) constructing a correlation rotation matrix; (4) eliminating a multiplicative channel fading factor; (5) constructing a correlation rotation precoding matrix; (6) precoding; and (7) transmitting a to-be-transmitted symbol. The correlation rotation precoding method disclosed by the invention has the advantages of high symbol error rate performance, adverse effects caused by self-interference and multi-path channel interference can be simultaneously eliminated, the interference is utilized to improve the symbol error rate transmission performance of the generalized frequency division multiplexing GFDM communication system, meanwhile the precoding processing method of signals is simple and feasible, and the signal transmission requirements of users in a real environment can be satisfied in a multi-path channel scene.

The mechanism (6) has a planet gear (11) with an outside toothing that constantly meshes with inside toothing of a hollow gear (10), where the planet gear is rotatably positioned on a planet carrier (15). A sun gear (14) includes an outside toothing that constantly meshes with the toothing of the planet gear. A drive assembly (7) is connected to the hollow gear, planet carrier or the sun gear. An output shaft (5) is connected to the planet gear via a coupling mechanism (9). The planet gear, sun gear and the hollow gear have radii that are variable along the circumference.

The invention relates to a polar code security coding method in a non-orthogonal multiple access system, and belongs to the technical field of physical layer security coding. A base station sends information to legal users through a non-orthogonal multiple access system, every two users form a user pair to occupy the same time-frequency resource, and meanwhile, one eavesdropping user eavesdrops the information of the user pair; according to the method, an artificial noise assistance method is utilized to deteriorate an eavesdropping channel, and power distribution among different users in thenon-orthogonal multiple access system is optimized, so that the safety capacity of the system is maximized; based on the channel difference between a main channel and an eavesdropping channel, a polarization code nesting characteristic is utilized at a sending end, a security information interval is constructed to place security information, polarization code coding is carried out, and safe transmission is realized. According to the method, the power distribution among users is optimized, so that the safe transmission capacity of the polar code is maximized; and the method is also suitable fornon-degenerated eavesdropping channels, and is more widely applied to application scenarios.

The invention relates to a battery energy storage system for alleviating a problem of photovoltaic power generation abandoning and limiting and a control method therefor. The battery energy storage system comprises N photovoltaic power storage grid connected units connected with a power grid, a photovoltaic power generation abandoning control module, a charge and discharge power distribution module for the battery energy storage system, box type voltage step-up transformers corresponding to all the photovoltaic power storage grid connected units; each photovoltaic power storage grid connected unit comprises a photovoltaic power generation unit and a battery energy storage unit; each photovoltaic power generation unit is connected to a PCC grid connected point on a low voltage side of a three phase power grid, and a corresponding battery energy storage unit is connected to the PCC grid connected point on the low voltage side of the three phase power grid. Compared with technologies of the prior art, the battery energy storage system and the control method therefor are advantageous in that construction cost of a voltage step-up transformer substation in a photovoltaic power storage station is lowered, and economical efficiency of photovoltaic power generation is improved.