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1480results about How to "Improve power utilization" patented technology

Matching device and matching method for ultrasonic power supply

The invention discloses a matching device and matching method for an ultrasonic power supply. The matching device for the ultrasonic power supply comprises an ultrasonic signal generator, a drive isolation circuit, an ultrasonic power amplification circuit, a matching transformer, a tuning inductor, an ultrasonic transducer, a voltage sampling circuit, a current sampling circuit, a filtering and shaping circuit, a phase discriminator, an A / D converter, a single-chip microcomputer and a stepping motor. The output end of the matching transformer is connected with the tuning inductor; the output end of the tuning inductor is connected with the ultrasonic transducer; the voltage sampling circuit is used for collecting real-time working voltage signals at the two ends of a unit formed by the tuning inductor and the ultrasonic transducer, and transmitting the real-time working voltage signals to the phase discriminator. According to the matching device and matching method for the ultrasonic power supply, static impedance matching and dynamic impedance matching can be achieved, the matching inductance value can be tracked and adjusted through the phase difference of working currents and working voltages of the ultrasonic transducer, it can be ensured that the ultrasonic transducer always works at a resonance point, the maximum useful power output of the ultrasonic transducer can be achieved, in addition, the adjusting response speed is high, and accuracy is high.
Owner:HOHAI UNIV CHANGZHOU

Multifunctional modularized lithium electric cooker

The invention belongs to the technical field of electric appliances and electric engineering, and relates to a multifunctional modularized lithium electric cooker. An embedded handle is embedded in an upper cover with a heat-preserving layer, the middle of the upper cover with the heat-preserving layer is provided with an air outlet hole, a lateral thermoelectric film is attached to the outer side of a barrel-shaped outer container, and a barrel-shaped inner container is arranged on the inner side of the barrel-shaped outer container; an inner container upper cover covers the top of the barrel-shaped inner container, and the lower end of the barrel-shaped inner container is provided with a strainer; the barrel-shaped outer container is arranged on an inner and outer container supporting frame, the inner and outer container supporting frame is disposed on a bottom support, the center of the bottom support is provided with a bottom cooling air hole, a bottom thermoelectric film is attached to the surface of the bottom support, and the lower portion of the bottom support is provided with a lithium battery; a power supply cover plate is disposed on the outer side of the lithium battery; the inner side of the bottom of a shell is provided with a fan, and a bottom heat-preserving pad is arranged on the outer side of the bottom of the shell; one side of the barrel-shaped outer container is provided with a temperature sensor connected with a temperature display and control unit, and the shell is provided with the temperature display and control unit and a clock displaying, timing and setting unit. The multifunctional modularized lithium electric cooker is simple in structure, multifunctional, convenient to carry, safe to use, convenient to repair and maintain, high in utilization rate and good in heat preservation.
Owner:XUZHOU FENGTONG INFORMATION TECH CO LTD

Energy optimizing dispatching method of home hybrid power supply system in real-time power price environment

The invention discloses an energy optimizing dispatching method of a home hybrid power supply system in a real-time power price environment. The energy optimizing dispatching method comprises the steps of establishing a flexible load working model according to a linear inequality constraint condition, obtaining electric energy matching between DG (distributed generation) and a load by use of a genetic algorithm (GA), performing automatic optimization by use of the information of the DG and the RTP (Real Time Price) and arranging the flexible load to operate at a lowest-price moment, developing a charge/discharge policy of an energy storage device to realize the energy re-planning of the DG, thereby satisfying the balance between supply and demand of the DG and the load, and finally, making up the difference between supply and demand in such a manner of supplying power to a storage battery or the load from a large power grid and reducing the power purchase cost to an utmost extent. The energy optimizing dispatching method of the home hybrid power supply system in the real-time power price environment provides detailed algorithm description for an actual smart home user as a test object; besides, the effectiveness of the developed policy in improving the utilization rate of the electric energy of the DG and the economic benefit of the user is proven through a series of experiments.
Owner:ZHEJIANG UNIV

Power system reactive power optimization method based on depth determination strategy gradient reinforcement learning

The invention provides a power system reactive power optimization method based on depth determination strategy gradient reinforcement learning. A deterministic depth gradient strategy algorithm is applied to the traditional power system reactive power optimization problem. The voltage state of the power system is sensed through a depth neural network, a corresponding action decision is then made by using a reinforcement learning method, a correct generator terminal voltage adjustment action, a node capacitor bank switching action and a transformer tapping point adjustment action are made to adjust reactive power distribution in the power system, the active power network loss of the power system is minimized. As the neural network is divided into an online network and a target network, association between parameter updating and adjacent training in each training process of the neural network is avoided, and the problem that reactive power optimization of the power system is caught in local optimization is avoided. On the premise of conforming to the security constraint of the power system, the economical efficiency of the operation of the power system is improved by reducing the network loss of the power system.
Owner:HARBIN INST OF TECH +1

Cooperative relay security transmission method based on artificial noise interference

ActiveCN105515717AEnsure secure transmissionReduce the received signal to interference and noise ratioCommunication jammingSecure transmissionTransfer procedure
The invention discloses a cooperative relay security transmission method based on artificial noise interference, wherein the whole transmission process is completed in two time slots; in the first time slot, an information source broadcasts available information fused with artificial noise to a relay and an eavesdropper, and before broadcasting, the artificial noise is pre-coded by a null space orthogonal base of a channel from the information source to the relay, and the available information is pre-coded by using a maximal ratio transmission strategy; and in the second time slot, the relay decodes and transmits the received information, and meanwhile the information source sends the artificial noise to interfere the receiving of the eavesdropper. According to the cooperative relay security transmission method based on artificial noise interference, as interferences are implemented in both the two transmission time slots for the eavesdropper, the reception signal-to-interference-and-noise-ratio of the eavesdropper can be effectively reduced, thereby the system security performance is enhanced, and the security transmission of the information is ensured; in addition, in order to improve the use ratio of the system power, the power can be set through working out the optimal power distribution factor of the system, and thereby the optimal system security performance can be achieved with the lowest power consumption.
Owner:HUAQIAO UNIVERSITY

Driving device of hybrid electric vehicle

The invention discloses a driving device of a hybrid electric vehicle. The driving device comprises an engine, a first motor, a second motor and a double-planetary-line gear transmission mechanism, wherein the double-planetary-line gear transmission mechanism is composed of a front planetary line and a rear planetary line, the front planetary line comprises a front sun gear, a front planetary gear, a front planetary carrier and a front gear ring, and the rear planetary line comprises a rear sun gear, a rear planetary gear, a rear planetary carrier and a rear gear ring. The driving device is characterized in that a brake is arranged on the front sun gear, the front planetary carrier is connected with the power output end of the engine and is further connected with a spindle of the first motor through a first clutch, the first spindle is further connected with the front gear ring, the front gear ring is connected with the rear planetary gear through a second clutch, the rear sun gear is connected with a spindle of the second motor gear, and the rear gear ring is connected with a power output shaft of a driving device body. The working efficiency of the motors is improved, the fuel consumption of the hybrid electric vehicle is reduced, and the production cost of the hybrid electric vehicle is also reduced.
Owner:GREAT WALL MOTOR CO LTD

Wiring robot and wiring method for on-site calibration of mutual inductor

The invention provides a wiring robot and wiring method for on-site calibration of a mutual inductor. The wiring robot for on-site calibration of the mutual inductor mainly comprises a wiring robot body. The wiring robot body comprises two sets of mechanical arms and manipulators. Each set of mechanical arms includes the X-axis mechanical arm, the Y-axis mechanical arm and the Z-axis mechanical arm, wherein the mechanical arms are driven by a ball screw structure to slide relatively. Each manipulator comprises an angle adjustment device and a wiring device, wherein the angle adjusting device comprises a wiring mechanical arm, and the front end of the wiring mechanical arm is connected with the wiring device through a rotating mechanism; and the wiring device comprises an installation base, a clamping mechanism is right arranged at the front end of the installation base, a connecting hole is formed in the upper end of the installation base, and a gluing device is arranged at the lower end of the installation base. According to the wiring robot and wiring method for on-site calibration of the mutual inductor, connection between a port of the mutual inductor and a wire can be completed automatically, and thus a worker is assisted in completing an on-site calibration task of the mutual inductor.
Owner:平邑仁安中医药产业发展有限公司

Low-frequency PWM and single neuron self-adaption-based ultrasonic motor control system

The invention discloses a low-frequency PWM and single neuron self-adaption-based ultrasonic motor control system. According to the system, a traveling wave ultrasonic motor is adopted as a control object, a serial port driving circuit is used for sending the steering, rotating speed, turning angle information into a serial communication SCI interface of a high-speed microprocessor DSP through a system information interface, and the DSP calculates low-frequency PWM signals required by close loop control according to the input command and feedback information in running of the motor, and inputting the frequency, phase and amplitude control word of a DDS signal generator to a high speed microprocessor CPLD through SPI communication. The low-frequency PWM signals output by the DSP and the signal output by the CPLD are processed by a DDS-based symmetrical PWM signal generation unit and then sent to a USM driving unit, four pathways of symmetrical PWM signals are acted to a two-phase push-pull inverting circuit and a matching circuit to output two-phase sinusoidal voltage with certain amplitude, frequency and phase difference and drive the ultrasonic motor. The system has the characteristics that power supply utilization rate is high, the speed regulation range is wide, the running state of the motor is stable, and the system has self-adaption capacity and the like.
Owner:ANHUI UNIV OF SCI & TECH

Offshore solar energy, wind energy and wave energy complementary power generation device

The invention provides an offshore solar energy, wind energy and wave energy complementary power generation device. The offshore solar energy, wind energy and wave energy complementary power generation device comprises a wave energy capturing device, a wind energy capturing device, a hydraulic transmission system, a solar photovoltaic panel, a power conversion system, a floating platform upper-layer deck, a floating platform lower-layer deck, a supporting column, an underwater buoyancy tank and a mooring system. The hydraulic transmission system is composed of a wave energy conversion hydraulic subsystem and a fan hydraulic subsystem. The wave energy capturing device and the wind energy capturing device are connected with the two subsystems correspondingly to drive a generator to generatepower, and are combined with electric energy generated by the solar photovoltaic panel through the power conversion system to form a microgrid, and the electric energy is stored in an energy storage device or directly supplied to a user. Main oil ways of the wave energy conversion hydraulic subsystem and the fan hydraulic subsystem are connected through communicating pipelines, and connection anddisconnection of the two main oil ways are controlled through a cartridge valve. When resources are good, the two subsystems operate independently; and when the resources are poor, the two subsystemsoperate in a complementary mode to drive the generator to generate power.
Owner:NORTH CHINA ELECTRIC POWER UNIV (BAODING) +1
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