31results about How to "Improve power balance" patented technology

A system and method related to a new approach to speech recognition that reacts to concepts conveyed through speech. In its fullest implementation, the system and method shifts the balance of power in speech recognition from straight sound recognition and statistical models to a more powerful and complete approach determining and addressing conveyed concepts. This is done by using a probabilistically unbiased multi-phoneme recognition process, followed by a phoneme stream analysis process that builds the list of candidate words derived from recognized phonemes, followed by a permutation analysis process that produces sequences of candidate words with high potential of being syntactically valid, and finally, by processing targeted syntactic sequences in a conceptual analysis process to generate the utterance's conceptual representation that can be used to produce an adequate response. The invention can be employed for a myriad of applications, such as improving accuracy or automatically generating punctuation for transcription and dictation, word or concept spotting in audio streams, concept spotting in electronic text, customer support, call routing and other command / response scenarios.

A method of controlling and regulating a rotorcraft presenting a speed of advance that is high and stabilized, the rotorcraft including at least a main lift rotor (10), at least one variable pitch propulsion propeller (6), and at least one power plant for driving the main rotor(s) (10) and at least one propeller (6), said method consisting in using a first loop for regulating pitch or attitude, and a second loop for regulating speed by means of a control over the mean pitch of the propulsion propeller(s) (6), wherein the method further consists in controlling the deflection angle of a horizontal tailplane (30, 25, 35) by using a third loop for controlling and regulating said deflection angle of the horizontal tailplane (30, 25, 35) in order to minimize the total power consumed by the main rotor (10) and the propulsive propeller(s) (6), for a given speed and attitude.

A method for avoiding co-channel interference of a polar orbit constellation by using phased array beam reconstruction, including: calculating an average coverage multiplicity at different latitudes;determining a minimum average coverage multiplicity that ensures continuous coverage conditions; according to a polar orbit constellation operation law and a satellite beam strategy, calculating a maximum average coverage multiplicity of a satellite on which overlapping of same frequency beams does not occur; according to a latitude range in which the satellite is operating, determining a ground coverage beam used by the satellite in different latitude ranges; and according to the determined ground coverage beam used by the satellite in different beam ranges, generating a control strategy thatis on the ground coverage beam and that is performed by a phased array antenna during satellite operation, and automatically performing, by the polar orbit constellation, beam control of the phased array antenna according to a latitude of a sub-satellite point of the satellite and in accordance with the control strategy that is on the ground coverage beam and that is performed by the phased arrayantenna, so that overlapping of the same frequency beams does not occur in a high latitude area under the condition of ensuring continuous coverage, thereby avoiding the co-channel interference between the same frequency beams.

The invention discloses an optimal dispatching method for a multi-energy complementary power generation system. According to the method, when a wind and light power generation system and a water suction energy storage power station are switched in a large power grid for operation, a coordinated dispatching method is applied, and the coordination problem between the power grid loss generated when the wind and light power generation system and the water suction energy storage power station are switched in the large power grid and the economic optimal object of a complementary system is solved. Moreover, the absorptive problem of wind and light power generation is further considered, a coordinated dispatching strategy is provided, and the method is used for carrying out system optimization onthe overall system containing the wind and light power generation system and the water suction energy storage power station. Therefore, a flexible, safe and reliable technology can be provided amongthe interior of the wind and light power generation system, the wind and light power generation system and the water suction energy storage power station and between the complementary system and the large power grid by using a particle swarm intelligence algorithm, flexible economic dispatching is realized, and the stability of the complementary system is guaranteed.

A method of controlling and regulating a rotorcraft presenting a speed of advance that is high and stabilized, the rotorcraft including at least a main lift rotor (10), at least one variable pitch propulsion propeller (6), and at least one power plant for driving the main rotor(s) (10) and at least one propeller (6), said method consisting in using a first loop for regulating pitch or attitude, and a second loop for regulating speed by means of a control over the mean pitch of the propulsion propeller(s) (6), wherein the method further consists in controlling the deflection angle of a horizontal tailplane (30, 25, 35) by using a third loop for controlling and regulating said deflection angle of the horizontal tailplane (30, 25, 35) in order to minimize the total power consumed by the main rotor (10) and the propulsive propeller(s) (6), for a given speed and attitude.

The invention relates to a formation method of an identical splitting ratio self-balancing type optical fiber hydrophone time division multiplexing array light path. When an optical fiber coupler and a fiber delay line are used for forming n paths of time division multiplexing light paths, the optical fiber couplers of identical splitting ratio are adopted to constitute the array light path. The optical fiber couplers in an input trunk are positively arranged and the optical fiber couplers in an output trunk are reversely arranged, leading the couplers passed by each hydrophone to be totally identical and the splitting ratio gone through by each hydrophone to be totally identical. Regardless of the splitting ratio of the optical fiber couplers, the additional loss and splitting ratio error caused by the couplers have the same effect on each hydrophone, and the light path made from the couplers has excellent power balance. The formation method has the beneficial effects of obtaining the time division multiplexing array of high performance and improving the power balance, time delay accuracy, interchangeability and expandability of the array.

A new approach to speech recognition that reacts to concepts conveyed through speech, which shifts the balance of power in speech recognition from straight sound recognition and statistical models to a more powerful and complete approach determining and addressing conveyed concepts. A probabilistically unbiased multi-phoneme recognition process is employed, followed by a phoneme stream analysis process that builds the list of candidate words derived from recognized phonemes, followed by a permutation analysis process that produces sequences of candidate words with high potential of being syntactically valid, and finally, by processing targeted syntactic sequences in a conceptual analysis process to generate the utterance's conceptual representation that can be used to produce an adequate response. Applications include improving accuracy or automatically generating punctuation for transcription and dictation, word or concept spotting in audio streams, concept spotting in electronic text, customer support, call routing and other command / response scenarios.

The invention provides a demand side response electrical load regulation and control method and system for a virtual power plant. The method comprises : obtaining the power generation grid-connected price of renewable energy sources, the power generation government subsidy price of the renewable energy sources and user side electricity price information in real time; obtaining time data of a to-be-predicted day and corresponding meteorological data; predicting power load data and renewable energy power generation output power according to the time data and the corresponding meteorological data; and regulating and controlling the power output of the renewable energy source according to the power generation grid price of the renewable energy source, the power generation government subsidy price of the renewable energy source, the user side electricity price information, the power load data and the renewable energy source power generation output power. The accuracy of load and renewable energy output power prediction is improved, and reasonable control over part of loads in the active power distribution network is achieved.

The invention relates to a power distribution network renewable energy power generation cluster access planning method. An upper layer planning model and a lower layer scheduling model are adopted, and the upper layer planning model takes maximum revenue of a renewable energy power generation investor as a target; an objective function of the lower-layer scheduling model comprises a power balancedegree index, the adjustment cost of a power distribution company and the active power reduction amount of renewable energy power generation; the adjustment measures comprise the action of a tie lineswitch, the tap action of an on-load voltage regulation transformer and the active power reduction and reactive power compensation of renewable energy power generation; the C-Vine Copula model is usedfor modeling according to the timing correlation between load and renewable energy resources,, and a typical planning scene considering load and resource correlation is generated by combining a Latinhypercube sampling method.

The invention discloses a 50-ampere power consumption balanced-type high-power constant-current source and belongs to the technical field of electronic equipment. The constant-current source is structurally characterized in that a voltage control module (1) generates continuous adjustable voltage signals VC for controlling a transconductance amplifier (3), the transconductance amplifier (3) generates a constant current signal for driving a load (5), a safety protection circuit module (4) provides security protection for the load, and the output port VA of the voltage control module (1) and the output port VF of the transconductance amplifier module (3) are connected to the mode selecting input end of an output display module (2). The invention provides a constant-current source for driving a high-power semiconductor laser array, and the maximum output current of the constant-current source can be up to 50 amperes; and the constant-current source is of a power consumption balanced-type structure, so that the power loss and heat are uniformly dispersed and timely discharged and then not accumulated, and the redundancy of a constant-current driver is enhanced, thereby improving the stability, reliability and maximum output current of the high-power constant-current source.

In a method and device for the encoding / decoding of the power distribution at the outputs of a system, the distribution encoder comprises an element that receives a signal s(t) and a piece of distribution information i(t), and that superposes said piece of distribution information i(t) received on said signal s(t) received. The piece of information i(t) is used for the subsequent distribution of the total power Ps of said signal s(t) at said output or outputs {SΓ} of a system Γ. The distribution decoder comprises one or more inputs on which there is received an encoded signal c(t) or an encoded signal divided into several signal (cj(t))jepsi[1,2N] comprising the useful signal s(t) and the piece of distribution information i(t). It also comprises one or more outputs connected to the outputs {SΓ} of said system Γ to which said signal s(t) is transmitted by distributing the total power received Ps according to said piece of distribution information i(t). The disclosed method and device enable, for example, the fast, low-power switching of the outputs of a high-power system and the programming of a system with variable power outputs.

The invention relates to a hydraulic drive (2) having a main pump (8), which can be adjusted in terms of delivery volume and delivery direction, and having a hydraulic motor (9), which main pump (8) and hydraulic motor (9) are connected to one another in a closed circuit via pressure lines (10A, 10B), and having a charge pump (14, 15) for charging into the closed circuit and for supplying pressurized fluid to at least one controling device (11, 12), wherein the charge pump (15) has a separate drive motor (19) whose power / rotational speed can be specified independently of the rotational speed of the drive (3) of the main pump (8). In this way, the charge pump (15) can be of smaller dimensions than previously conventional, and the power balance of the hydraulic drive can be improved.

A capacitance based reactive power balancing current limited power supply (RPBCLPS) for driving floating DC loads utilizes capacitive reactance to limit current being supplied to a load, rather than inductance. A capacitor transfers charge from an AC current input to a DC load. A fuse electrically protects the capacitor from high frequency current harmonics. A diode clamp electrically protects the capacitor from voltage spikes. A rectifier converts the AC current input into DC current for driving the DC load. The reactive power balancing current limited power supply can be incorporated as a key component into reactive power balancing electrical power distribution systems. Such systems can comprise a grid configuration structured to distribute the AC electrical power from a utility source to a plurality of DC loads. Further, the DC loads can be cooperatively located to provide functional distributed capacitance throughout a substantial portion of the grid.

The invention discloses a rotary three-station bidirectional building material pressing machine. A three-station rotating disk rotates around a circle center; three groups of die frames are uniformly distributed on the three-station rotating disk at intervals; a lower die capable of moving in a longitudinal direction is positioned at the lower end of each group of die frame; a demoulding and stacking system comprises a demoulding and stacking device and a brick output conveyor; the demoulding and stacking device is used for demoulding a pressed building material and automatically stacking thebuilding material onto the conveyor tidily to be conveyed; the initial state of the three-station rotating disk is static; in the initial state, a material inlet of a feeding machine is opposite to one group of die frame, and the other group of die frame is positioned in a pressing region of the bidirectional pressing machine; the demoulding and stacking device of the demoulding and stacking system is opposite to the third group of die frame; and the rotating direction of the three-station rotating disk is from the feeding machine to the bidirectional pressing machine, and the single rotatingangle is 120 degrees. With the rotation of the three-station rotating disk, the feeding machine, the bidirectional pressing machine and the demoulding and stacking system perform feeding, pressing, demoulding, stacking and transmission on the three groups of die frames in real time, so the production speed is increased greatly.

The invention discloses an MMC topology-based distributed hybrid energy storage and power compensation system. A single-star topological structure is adopted; sub-modules comprise energy storage medium parts and power level parts; each energy storage medium part comprises at least one energy storage battery and a capacitor; the batteries and the capacitors are connected to a main circuit loop through power-level different ports; and each power level part comprises a bridge arm module structure or a T-shaped module structure comprising power switches and power diodes. By the system, a high-current power reactor does not need to be used on the basis of not significantly increasing the number of the sub-modules; the power levels of the sub-modules are multiplexed; two kinds of energy storage mediums of the energy storage batteries and the capacitors are dispersedly distributed into various sub-modules to facilitate power balance on various energy storage mediums; and cooperative work of multiple mediums is conducive to technological economy consideration and optimization of an energy storage technology in multiple dimensions of the lifetime, the response speed, the conversion efficiency and the like.

A capacitance based reactive power balancing current limited power supply (RPBCLPS) for driving floating DC loads utilizes capacitive reactance to limit current being supplied to a load, rather than inductance. A capacitor transfers charge from an AC current input to a DC load. A fuse electrically protects the capacitor from high frequency current harmonics. A diode clamp electrically protects the capacitor from voltage spikes. A rectifier converts the AC current input into DC current for driving the DC load. The reactive power balancing current limited power supply can be incorporated as a key component into reactive power balancing electrical power distribution systems. Such systems can comprise a grid configuration structured to distribute the AC electrical power from a utility source to a plurality of DC loads. Further, the DC loads can be cooperatively located to provide functional distributed capacitance throughout a substantial portion of the grid.

The invention relates to a scanning optoelectronic detection device and to a method for detecting the environment of a motor vehicle (1) in a scanning manner by means of an optoelectronic detection device (2). The detection device (2) comprises a transmitting and receiving optical unit (4), which outputs electromagnetic beams and images reflected beams on a detector, wherein the detector has a multi-cell design and comprises a plurality of detector cells for providing electrical reception signals in dependence on received reflected beams, which detector cells are lined up in a detector cell stack and can be evaluated in parallel measurement planes. The detection device also comprises a mirror support (7) having mirror surfaces (9, 10) facing away from each other, which are arranged tilted at a tilt angle in relation to an axis of rotation (8) of the mirror support (7) and which image different vertical detection ranges for reflected beams onto the detector. According to the invention, in order to enable the detection of the environment of a motor vehicle by means of an optoelectronic detection device with the greatest possible detection range and with little construction complexity, such certain tilt angles alpha of the mirror surfaces (9, 10) are provided that the detection ranges (14', 14") overlap in a center section of a total detection range (16).

The invention discloses an electric vehicle charging and discharging method and a vehicle-mounted terminal, and belongs to the field of vehicles so as to improve the power balance of a power grid. The electric vehicle charging and discharging method comprises the steps of receiving a charging and discharging instruction from a user or a power grid, wherein the charging and discharging instruction comprises a charging instruction and a discharging instruction; and charging or discharging an electric vehicle according to the charging and discharging instruction, wherein the electric vehicle is enabled to discharge to the power grid reversely under the condition that a power load of the power grid is greater than a threshold, and the electric vehicle is charged under the condition that the power load of the power grid is not greater than the threshold. The electric vehicle charging and discharging method is used for charging and discharging a vehicle.

The invention discloses a DC microgrid technology-based distributed power source energy management system. The system is characterized by comprising an input stage and an output stage. The input stageis used for providing a power supply, and the output stage is used for outputting the electric energy to a one-way power grid or a load. An isolation capacitor is arranged between the input stage andthe output stage. A control switch is connected between the output stage and the one-way power grid in series. The input stage comprises a photovoltaic assembly and a lithium battery assembly. According to the invention, all micro-power supplies of the system are convenient to coordinate and control. Through controlling a direct-current bus voltage, the power balance between the power supply andthe load can be realized. The converters work independently and do not need to be in communication with each other. The entire system is isolated from a public power grid, so that the disturbance of the public power grid is isolated. The entire system is used as a whole to provide certain dynamic support for the public power grid. A common converter replaces each independent converter, so that theutilization rate of the converter is improved. The number of power electronic devices is reduced, and the cost is reduced.

In a method and device for the encoding / decoding of power distribution at outputs of a system, a distribution encoder includes an element that receives a useful input signal and a piece of distribution information, and that superposes the piece of distribution information received on the input signal. The piece of information is used for the subsequent distribution of the total power of the input signal at an output or outputs of the system. A distribution decoder includes one or more inputs that receive an encoded signal or an encoded signal divided into several signals including the useful signal and the piece of distribution information. Further, one or more outputs are connected to the outputs of the system to which the useful signal is transmitted by distributing the total power received according to the piece of distribution information. The method and device enable, for example, fast, low-power switching of the outputs of a high-power system and the programming of a system with variable power outputs.

The invention relates to a hydraulic drive (2) having a main pump (8), which can be adjusted in terms of delivery volume and delivery direction, and having a hydraulic motor (9), which main pump (8) and hydraulic motor (9) are connected to one another in a closed circuit via pressure lines (10A, 10B), and having a charge pump (14, 15) for charging into the closed circuit and for supplying pressurized fluid to at least one controlling device (11, 12), wherein the charge pump (15) has a separate drive motor (19) whose power / rotational speed can be specified independently of the rotational speed of the drive (3) of the main pump (8). In this way, the charge pump (15) can be of smaller dimensions than previously conventional, and the power balance of the hydraulic drive can be improved.

A power management system includes a plurality of power adjustment resources electrically connected to a microgrid. The plurality of power adjustment resources include a plurality of EVSEs, each of EVSEs including a parking space. When any one of a plurality of power feeding vehicles is parked in the parking space, an EVSE enables power feeding from a vehicle parked in the parking space to the microgrid. A CEMS server manages the parking space. When a balance of power supply and demand in the microgrid is in an overdemand state, the CEMS server allocates the parking space to a power feeding vehicle that responds to a request for power feeding to the microgrid, of the plurality of power feeding vehicles.

The invention relates to a cross side dumping type variable-frequency drive conveying device for coal mines. The cross side dumping type variable-frequency drive conveying device for the coal mines comprises a scraper conveyor and a scraper loader. The scraper conveyor comprises a conveyor head, a conveyor body and an extensible conveyor tail. The extensible conveyor tail is composed of a fixed frame and a movable frame. A first extensible conveyor tail deflection slot, a second extensible conveyor tail deflection slot and a third extensible conveyor tail deflection slot are formed between the conveyor body and the movable frame. An extensible conveyor tail push unit I and an extensible conveyor tail push unit II are arranged on the movable frame on one side of the first extensible conveyor tail deflection slot and on one side of the second extensible conveyor tail deflection slot respectively. The cross side dumping type variable-frequency drive conveying device for the coal mines has the advantages that energy conservation and emission reduction are realized, and requirements of a motor for high starting torque and soft starting can be met; since the conveying device can be started at low speed and high torque, collapsing force on a chain is reduced, post maintenance cost is lowered, the longest service life is realized, and the high requirement on coal mining mechanization is met.

The invention discloses an MMC topology-based distributed hybrid energy storage and power compensation system. A single-star topological structure is adopted; sub-modules comprise energy storage medium parts and power level parts; each energy storage medium part comprises at least one energy storage battery and a capacitor; the batteries and the capacitors are connected to a main circuit loop through power-level different ports; and each power level part comprises a bridge arm module structure or a T-shaped module structure comprising power switches and power diodes. By the system, a high-current power reactor does not need to be used on the basis of not significantly increasing the number of the sub-modules; the power levels of the sub-modules are multiplexed; two kinds of energy storage mediums of the energy storage batteries and the capacitors are dispersedly distributed into various sub-modules to facilitate power balance on various energy storage mediums; and cooperative work of multiple mediums is conducive to technological economy consideration and optimization of an energy storage technology in multiple dimensions of the lifetime, the response speed, the conversion efficiency and the like.

The invention discloses a converter based on a three-port distributed photovoltaic energy storage hybrid structure. The converter disclosed by the invention adopts a single star topology structure, which comprises an energy storage medium part, a power stage part and an LCL filtering part; the energy storage medium part comprises an energy storage battery and a photovoltaic array; the power stagepart comprises a DC side anti-reflection diode, a three-phase bridge arm structure composed of multiple power switches, and bilateral switches, and an anode of the photovoltaic array is connected to the anode of the anti-reflection diode; and the other ends of the three bilateral switches are connected with midpoints of three bridge arms and the LCL filtering part. According to the converter disclosed by the invention, the switches of a three-phase bridge arm of the power stage of the converter and the bilateral switches are reused, and the photovoltaic array and the energy storage battery aredispersed into a main power circuit, which facilitates the power balance of the photovoltaic array and the energy storage battery.

The invention discloses a rotary three-station bidirectional building material pressing machine. A three-station rotating disk rotates around a circle center; three groups of die frames are uniformly distributed on the three-station rotating disk at intervals; a lower die capable of moving in a longitudinal direction is positioned at the lower end of each group of die frame; a demoulding and stacking system comprises a demoulding and stacking device and a brick output conveyor; the demoulding and stacking device is used for demoulding a pressed building material and automatically stacking thebuilding material onto the conveyor tidily to be conveyed; the initial state of the three-station rotating disk is static; in the initial state, a material inlet of a feeding machine is opposite to one group of die frame, and the other group of die frame is positioned in a pressing region of the bidirectional pressing machine; the demoulding and stacking device of the demoulding and stacking system is opposite to the third group of die frame; and the rotating direction of the three-station rotating disk is from the feeding machine to the bidirectional pressing machine, and the single rotatingangle is 120 degrees. With the rotation of the three-station rotating disk, the feeding machine, the bidirectional pressing machine and the demoulding and stacking system perform feeding, pressing, demoulding, stacking and transmission on the three groups of die frames in real time, so the production speed is increased greatly.

The invention discloses a 50-ampere power consumption balanced-type high-power constant-current source and belongs to the technical field of electronic equipment. The constant-current source is structurally characterized in that a voltage control module (1) generates continuous adjustable voltage signals VC for controlling a transconductance amplifier (3), the transconductance amplifier (3) generates a constant current signal for driving a load (5), a safety protection circuit module (4) provides security protection for the load, and the output port VA of the voltage control module (1) and the output port VF of the transconductance amplifier module (3) are connected to the mode selecting input end of an output display module (2). The invention provides a constant-current source for driving a high-power semiconductor laser array, and the maximum output current of the constant-current source can be up to 50 amperes; and the constant-current source is of a power consumption balanced-type structure, so that the power loss and heat are uniformly dispersed and timely discharged and then not accumulated, and the redundancy of a constant-current driver is enhanced, thereby improving the stability, reliability and maximum output current of the high-power constant-current source.