24 results about "Resonant energy" patented technology

This invention provides a MnO2@CDs composite material for the visual detection of amoxicillin and its preparation method, relating to the field of analytical detection technology. The MnO2@CDs constructed in this invention can be used for both fluorescence and colorimetric detection of amoxicillin. Due to the resonant energy transfer between CDs and MnO2, the fluorescence of CDs is quenched. In the presence of AMO, MnO2 is degraded by AMO, releasing CDs, and its blue fluorescence is restored. In colorimetric detection, MnO2@CDs exhibit excellent oxidase-like properties, capable of oxidizing colorless TMB to yellow TMB. 2+ AMO has strong reducing properties and inhibits oxidation reactions. In the presence of AMO, it can promote the oxidation of TMB. 2+ When AMO is reduced to TMB, the solution color gradually changes from yellow to colorless as the AMO concentration increases, resulting in a vibrant color change and enabling the visual detection of AMO.

The application discloses a high-performance p-type GeTe-based thermoelectric material with introduced resonance energy level and a preparation method thereof, and belongs to the field of new energy materials. 0.85‑y Sb 0.1 Pb 0.05 Te-x%Mo; the method comprises the following steps: I, weighing; II, sealing; III, heating, melting and annealing treatment; and IV, sintering. The application is used for the high-performance p-type GeTe-based thermoelectric material with introduced resonance energy level and the preparation thereof.

The application relates to the field of smart grids, and discloses a photovoltaic distribution box integrated module for a charging pile group, which comprises a photovoltaic input, a charging output interface, a direct-current bus and a bidirectional power disturbance unit, cooperates with an internal heat conduction flow channel and a connector preheating cavity. In an engineering mode, a control unit drives the disturbance unit to generate internal power circulation in the direct-current bus, realizes virtual full-load heating, verifies construction quality by comparing the drift degree of cold and hot state impedance characteristic fingerprints, and solves the problem of no-car detection. In a running mode, the system uses the consistency of real-time impedance and solidified fingerprints as the basis for physical layer safety locking to prevent illegal tampering; meanwhile, based on a virtual resistance control law, the disturbance unit is driven to actively absorb wideband resonant energy. The application effectively realizes self-loading test of power distribution facilities, hardware-level safety access protection and active management of power quality.

The application discloses a method and device for transformer power frequency resonance energy collection in a power system, designs a cantilever beam type multi-tunnel rolling type friction nanogenerator energy collection device, and can effectively collect vibration energy generated by transformer power frequency resonance in the power system. The collected energy is effectively stored, and then is used for power supply of a sensor node and real-time monitoring of an operation state of the transformer. This provides a new scheme for stable operation of a smart grid and maintenance of long-distance power transmission.

Aspects of the present disclosure describe systems, methods, and structures that scavenge mechanical energy to provide electrical energy to a wearable, where the mechanical energy is scavenged by a bending-strain-based transducer that includes a non-resonant energy harvester. By employing a non-resonant energy harvester that operates in bending mode, more electrical energy can be generated that possible with prior-art energy harvesters. In some embodiments the bending-strain-based transducer also includes a sensor and / or a haptic device. Some transducers in accordance with the present disclosure comprise a piezoelectric layer comprising a low-K piezoelectric material, such as aluminum nitride, which enables generation of higher voltage and power / energy output and / or a thinner transducer. As a result, transducers in accordance with the present disclosure can be included in wearables for which large transducer thickness would be problematic, such as sole members (e.g., shoe insoles, midsoles or outsoles), garments, bras, handbags, backpacks, and the like.

The application provides a filter chip and a processing method thereof, and relates to the technical field of filters.The filter chip comprises a wafer, and the wafer is provided with a chip effective area;the wafer is provided with a scribing channel outside the chip effective area;the chip effective area is provided with a resonator and a bonding pad;the bonding pad is connected with the resonator through a metal circuit;the bonding pad is provided with a solder ball in a solder ball planting area;the solder ball and the surface of the chip effective area outside the resonator are covered with a silicon dioxide protective layer.The resonator area of the filter chip is not covered with the silicon dioxide protective layer, the flexible input and output and high-frequency conversion functions of the resonator are maintained, the influence of the silicon dioxide protective layer on the performance of the filter chip is reduced, the resonant energy efficiency of the filter is improved, and the anti-interference effect of the high-frequency filter is stronger.In addition, the half-etching cavity corresponding to the resonator on the wafer is arranged on the flux brushing solder ball steel mesh, so that the resonator is prevented from being damaged in the processing process.

The present invention discloses a non-through active auxiliary full-range soft-switching inverter, which includes a DC voltage module, a power-frequency voltage commutation parallel resonant energy storage capacitor bridge arm connected to the DC voltage module and used for outputting a power-frequency AC square wave; a high-frequency SPWM modulation lag switch bridge arm connected to the power-frequency voltage commutation parallel resonant energy storage capacitor bridge arm and used for performing SPWM modulation on the power-frequency AC square wave voltage to output a high-frequency square wave; a filter network connected to the power-frequency voltage commutation parallel resonant energy storage capacitor bridge arm and the high-frequency SPWM modulation lag switch bridge arm and used for filtering the high-frequency square wave output by the high-frequency SPWM modulation lag switch bridge arm to obtain an output voltage; and a high-frequency auxiliary switch and junction capacitance energy storage and release network connected to the DC voltage module and the high-frequency SPWM modulation lag switch bridge arm and used for realizing soft switching of high-frequency switching tubes.

The invention relates to a power distribution network user side loop resonance active suppression method and system, which intelligently judges whether the system is in a resonance state or not by monitoring and calculating a harmonic distortion rate and a key frequency point amplitude in real time. When a potential resonance risk is detected, the resonance suppression device is actively started to work, resonance generation conditions are actively damaged, and the resonance suppression device has two control modes: a damping enhancement mode improves system damping by inputting a resistor, and resonance energy accumulation is effectively suppressed; a damping enhancement and frequency deviation cooperative mode is combined with a damping enhancement mode, and the natural resonant frequency of a system is changed by adjusting the switching capacity of a capacitor to deviate from the current harmonic frequency, so that resonance is avoided, and a control algorithm of the active resonance suppression device is realized by a PID algorithm. The method is suitable for the low-frequency harmonic resonance problem caused by the nonlinear load in the user-side low-voltage power distribution network, and is suitable for comprehensive treatment of the resonance problem in industrial, commercial and civil power systems.

This invention relates to the field of electronic circuit technology, specifically to a passive network structure for suppressing the influence of inductor self-resonance. The structure includes: a large inductor with a resistor connected in parallel across its terminals and a small inductor connected in series; the resistor is used to dissipate resonant energy, and the small inductor is used to adjust the resonant frequency; the large inductor, resistor, and small inductor are sequentially connected via a connection structure; the connection structure includes a first connection structure and a second connection structure; the first connection structure connects the large inductor and the resistor, and the second connection structure connects the large inductor and the small inductor. This invention features a simple structure, low power consumption, and strong adaptability, making it suitable for high-frequency communication, power supply filtering, and other applications requiring high inductor performance.

The present invention provides a three-port bidirectional DC / DC converter soft-switching circuit and device thereof, comprising a first bridge arm, a second bridge arm, a filter circuit, a winding transformer, and a third-port circuit. The first bridge arm is connected in parallel with a high-voltage DC bus, the second bridge arm is located on either side of the first bridge arm, the center of the first bridge arm is electrically connected to the center of the second bridge arm via the first winding loop of the winding transformer, the second bridge arm is electrically connected to a battery via the filter circuit, and the third-port circuit is electrically connected to the first winding loop of the winding transformer via the second winding of the winding transformer. The control ends of the first and second bridge arms are electrically connected to the output ends of a controller, and the third-port circuit is configured to obtain resonant energy through the second winding of the winding transformer and provide the resonant energy to a DC load. This circuit is designed to achieve soft switching operation in a non-isolated multi-port converter during bidirectional conversion, thereby improving system efficiency and power density.

Systems methods, and structures are provided that scavenge mechanical energy to provide electrical energy to a wearable, where the mechanical energy is scavenged by a bending-strain-based transducer that includes a non-resonant energy harvester. The bending-strain-based transducer also includes a sensor and / or a haptic device. The transducer may comprise a piezoelectric layer comprising a low-K piezoelectric material, such as aluminum nitride, which enables generation of higher voltage and power / energy output and / or a thinner transducer. Transducers in accordance with the present disclosure can be included in wearables for which large transducer thickness would be problematic, such as shoe insoles, midsoles or outsoles, garments, bras, handbags, backpacks, and the like.

The invention belongs to the technical field of power electronics, and provides a high input voltage step-down converter and a power supply control method.The high input voltage step-down converter comprises a diode D13, a diode D14, a capacitor C19, a capacitor C20, a diode D15, an inductor L17 and a power supply S10; according to the invention, soft switching is realized by using the resonant inductor with the hybrid transformer and the capacitor, and the resonant energy recovery circuit helps to minimize power loss caused by a common hard switch in a traditional buck converter, is particularly obvious in performance in a wide input voltage range, generates less heat compared with a traditional design, and can be applied to the field of high-voltage buck converters. Therefore, the operation temperature is reduced, and the requirement for a large-scale cooling system is reduced. The method can process a wide input voltage range, and is suitable for being applied to various industries, automobiles and renewable energy sources. The system adopts a single-stage design, is provided with a high-speed switch, allows smaller components to be used, and is more compact in layout than a conventional power supply.

The application discloses a working condition self-adaptive double-time scale predictive virtual damping cooperative control system and method, and relates to the technical field of data processing. The FPGA controller is internally provided with: a working condition self-identification module, which generates a working condition code and synchronously dispatches each module; a double-time scale phase prediction module, which performs carrier cycle and fundamental cycle prediction in parallel, synthesizes a feedforward control amount, and generates a current polarity prediction value; a resonant energy self-adaptive virtual impedance module, which extracts LC resonance strength, dynamically adjusts a virtual resistance and a virtual reactance, generates a damping voltage compensation amount, and feeds back to the working condition self-identification module; a prediction-damping synthesis module, which superimposes the feedforward control amount and the damping voltage compensation amount vectors in the same coordinate system; a PWM edge dynamic moving dead zone compensation module, which independently moves the PWM edge according to a comprehensive dead zone effect model; and a heterogeneous parallel pipeline control unit, which realizes parallel calculation and synchronous effect. The application integrates delay compensation, resonance suppression and dead zone compensation into a unified cooperative framework.

Provided is a technique capable of efficiently generating RF signals. This plasma processing device comprises a chamber, and an RF generator configured to generate RF signals, wherein the RF generator includes: a DC power source; a resonant circuit; an isolation circuit configured to supply a current from the DC power source to the resonant circuit and to prevent transmission of resonant energy from the resonant circuit to the DC power source; a capacitor electrically connected to an output of the resonant circuit; and a switching circuit in which, in an OFF state, the resonant energy is stored in the resonant circuit, and in an ON state, an RF signal having a resonance frequency continues to oscillate between the resonant circuit and the switching circuit.

The power supply comprises an active power factor correction circuit, a resonant conversion circuit, a zero current detection circuit and a control circuit. The control circuit provides a first control signal to control the operation of the active power factor correction circuit, and provides second and third control signals to control the operation of the resonant conversion circuit. The zero current detection circuit can detect the state of boost inductive current in the boost active power factor correction circuit. When it is detected that the boost inductor current is not in a zero current state, the resonant conversion circuit operates in a multi-element resonant mode. When it is detected that the boost inductor current is in a zero current state, the resonant conversion circuit operates in a single-element resonant mode, so that the overall resonant energy and resonant loss are reduced.

The utility model provides an inverter, and the inverter comprises an inverter circuit which comprises a DC side and an AC side, the DC side is connected with a DC bus, and the AC side is electrically connected with an anti-surge circuit; the anti-surge circuit comprises a differential mode filtering module and a common mode filtering module, the differential mode filtering module comprises a differential mode inductor, the first end of the differential mode inductor is connected with the alternating current side port of the inverter circuit, and the second end of the differential mode inductor is connected to the common mode filtering module; the common-mode filtering module comprises a common-mode inductor, and the differential-mode inductor is electrically connected to a power grid phase line through the common-mode inductor; wherein the differential mode inductor and the common mode inductor are connected in parallel with a discharge tube. According to the inverter provided by the invention, when differential-mode and common-mode surges occur, the voltage of the differential-mode and common-mode inductors is clamped, and resonance energy is prevented from passing through the differential-mode and common-mode anti-surge modules, so that the reliability of the differential-mode and common-mode anti-surge modules can be improved, and the service life of the differential-mode and common-mode anti-surge modules can be prolonged.

The invention discloses a resonance energy transfer type soft switching inverter, which comprises an output polarity control bridge arm used for changing the output polarity of the inverter; the upper and lower tube positive and negative half cycle alternate chopping bridge arm is connected with the output polarity control bridge arm and is used for SPWM high-frequency modulation of the positive half cycle and the negative half cycle of the inverter to output high-frequency square waves; the resonance energy transfer bridge arm is connected with the upper and lower tube positive and negative half-cycle in-turn chopping bridge arm and is used for transferring resonance energy to realize soft switching of all high-frequency switching tubes; and the grounding point polarity variable filter network is connected with the output polarity control bridge arm and the resonance energy transfer bridge arm and is used for filtering high-frequency square waves output by the upper and lower tube positive and negative half-cycle alternate chopping bridge arms to obtain output voltage. According to the inverter, few additional magnetic elements are added, the control logic is simple, resonance energy is transferred through cooperation of the resonance energy transfer diode and the working time sequence of the auxiliary switching tube, soft switching of the auxiliary switching tube is achieved, and the working efficiency and reliability of the inverter are improved.

The application discloses an enhanced quasi-resonant PWM control circuit, a transformer comprising a transformer primary, a transformer first secondary and a transformer second secondary, an input circuit connected to the transformer primary, the transformer primary connected to a first switch, the transformer first secondary connected to a second switch, the transformer second secondary connected to a third switch, the second switch connected to a first capacitor, and the third switch connected to a second capacitor; a first control circuit for controlling the on and off of the first switch; a second control circuit for controlling the on and off of the second switch and the on and off of the third switch; the input circuit transmits energy through the transformer; wherein the second control circuit controls the resonant energy of the resonant circuit by controlling the on and off time sequence and time of the second switch and the third switch. The application has the function of increasing the energy of the resonant circuit, further reducing the voltage across the first switch when it is turned on, reducing the energy loss when it is turned on, and improving the conversion efficiency of the converter.

This invention relates to the field of vibration control technology and discloses a structural coupling vibration isolation system and method for cleanrooms. The system is installed on the floor slab of a building structure and includes an isolation support frame system, a quasi-zero stiffness main support unit, a segmented viscous damper, and a nonlinear tuned mass damping module. The isolation support frame is lowered in the middle to form a suspended foundation pit. The quasi-zero stiffness unit effectively isolates external low-frequency vibrations. The segmented damper achieves low-resistance, high-energy-dissipation limiting for micro-vibrations and large displacements. The equipment base acts as a tuned mass block to adaptively absorb internal resonant energy. This invention, by constructing a coordinated structural coupling vibration control system, can simultaneously achieve ultra-low frequency vibration isolation, wideband adaptive vibration absorption, and seismic safety protection, making it suitable for micro-vibration control scenarios of precision equipment in semiconductor cleanrooms.

The present invention discloses a resonant energy compensation circuit structure and operating method for a multi-stage coil electromagnetic gun. The circuit structure includes a first main energy storage unit with polarity, a first fully controlled switch, a first freewheeling diode, and at least one group of acceleration networks. The acceleration network includes a multi-stage first acceleration circuit, a second acceleration circuit, a non-polar auxiliary energy storage unit, or may also include a second main energy storage unit and a second freewheeling diode. By controlling the cyclic operation of multiple groups of acceleration networks, and in each round of circulation, each group of acceleration networks first turns on the first acceleration circuit of one level in turn, and then turns on the second acceleration circuit of one level in turn. The present invention can design a multi-stage electromagnetic gun using a small number of components, and the circuit structure is compact, lightweight, and portable. The present invention uses high-voltage film capacitors to participate in energy recovery and release, which can improve the transmission power and efficiency of the multi-stage electromagnetic gun.

A mixture comprising two host materials (a first host material H1 and a second host material H2) capable of forming an exciplex and two emitters (a first emitter E1 and a second emitter E2) wherein the first emitter E1 is an MR-TADF material and the absorption spectrum of the second emitter E2 and the emission spectrum of the first emitter E1 at least partially overlap each other; therefore, effective resonance energy transfer is achieved between the two light-emitting bodies. The first illuminant E1 is preferably selected from a first host material H1, the second illuminant E2 is preferably selected from an MR-TADF material, and the half-peak width of the luminous spectrum of the second illuminant E2 is smaller than or equal to 40 nm. The invention further discloses a composition (printing ink) containing the first host material H1, the second host material H2, the first illuminant E1 and the second illuminant E2, and a technical option is provided for OLED printing. The invention further discloses a photoelectric device, especially an organic electroluminescent device, the luminescent layer of which contains the mixture, and the organic electroluminescent device according to the invention has both high luminous efficiency and long device life.

The invention relates to the technical field of electromagnetic vibration energy, and discloses a multi-mode coupling resonant energy harvester, which comprises a magnet unit, a coil unit, a rigid-flexible hybrid beam and a shell, and is characterized in that the magnet unit comprises two magnet pieces with opposite polarities, and the magnet pieces are respectively arranged on the upper side and the lower side of the rigid-flexible hybrid beam; the coil unit comprises two coil pieces, the coil pieces are arranged on the upper side and the lower side of the rigid-flexible hybrid beam respectively, and the coil unit is located on the outer edge of the rigid-flexible hybrid beam; the shell is arranged on one side of the magnet unit, the transduction mechanism composed of the magnet unit and the coil unit is fixed to the shell, the shell is located between the magnet unit and the coil unit, the rigid-flexible hybrid beam is arranged on one side of the shell and fixedly connected with the shell, and the rigid-flexible hybrid beam comprises a rigid beam and a flexible beam. The rigid beams are arranged on the two sides of the flexible beam respectively, the rigid beams are connected with the flexible beam, the transduction mechanism is driven by the shell to vibrate in a forced mode, and broadband vibration under the condition of small size is achieved.