30results 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.

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.

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.

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.

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 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).

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 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.