12results about How to "High voltage gain" patented technology

The application discloses a Marx high-voltage pulse power supply based on a high-gain boost type DC-DC converter, and the circuit is composed of an input DC power supply, two power switching tubes, a switching inductor and a cascaded Marx generator; the cascaded Marx generator can be expanded to n levels, and can be used in application occasions requiring high-voltage pulse power supplies, such as cancer treatment in medical treatment, water treatment, waste gas treatment, sterilization, electron and ion beam generation and acceleration, electrostatic dust removal and the like. Under the same working condition, the Marx high-voltage pulse power supply can realize high-gain pulses, and compared with the existing Marx high-voltage pulse power supply, can realize lower switching power loss and higher voltage gain. Meanwhile, the Marx high-voltage pulse power supply also has the advantages of simple topological structure, few modules, few electronic devices and low cost. Therefore, the Marx high-voltage pulse power supply has important economic value and practical engineering significance.

The invention relates to the technical field of power electronic direct-current converters, in particular to an input and output common-ground high-gain boost converter which comprises a direct-current voltage source Vin, diode components D0-D4, capacitor components C0-C4, a first coupling inductor L1, a second coupling inductor L2, a first mosfet tube S1, a second mosfet tube S2 and a resistor R. The two main loops operate in a staggered mode, so that input current is continuous, input current ripples are small, relatively stable energy is continuously provided for the circuit, the voltage multiplication unit is adopted, the amplification factor of the circuit is increased, the duty ratio of the mosfet tubes S1 and S2 is adjusted, and small current ripples can be kept even under the condition that the boost factor is large. The device has the advantages of high step-up ratio, low device stress, high efficiency, easiness in control and implementation, lower cost and the like, and is suitable for a new energy power generation scene needing high direct current bus voltage grid-connected output under a low input voltage condition.

The application provides a high-voltage direct-hanging energy storage system based on DC-DC and a control method thereof, and belongs to the technical field of high-voltage direct-hanging energy storage systems. The system comprises a plurality of battery packs and a plurality of power modules. The battery packs and the power modules are connected in a cascaded form to a medium-high voltage power grid. An isolation topology module is connected in parallel between the battery packs and the power modules. The isolation topology module comprises a common-mode inductor and a current stabilizing unit. A first end of the common-mode inductor is connected to a battery pack, a second end of the common-mode inductor is connected to a first end of the current stabilizing unit, and a second end of the current stabilizing unit is connected to a power module. Through the isolation topology module, common-mode interference is effectively suppressed, and secondary pulsating current can be effectively absorbed. Through an LC passive filter composed of the common-mode inductor and a direct-current voltage stabilizing capacitor C1, common-mode interference and secondary pulsating current problems caused by cable parasitic parameters are more effectively suppressed.

The invention discloses a preparation method of a high-gain photoelectric detector, and relates to the technical field of photoelectric detectors, and the method comprises the steps: S1, structural design: selecting a corresponding photoelectric material to manufacture an avalanche photodiode according to the application scene requirements and the working environment of the detector, the method comprises the following steps: S1, preparing a semiconductor wafer, S2, preparing the wafer, namely cleaning the semiconductor wafer by using an ultrasonic cleaning agent and a chemical solution, S3, treating the material, namely performing doping operation, and injecting ions containing phosphorus and boron elements into a semiconductor material by using an ion accelerator, S4, performing gain optimization, namely optimizing a circuit by using a Cascode technology, connecting circuits of two transistors, and performing gain optimization. S5, packaging and integrating: packaging the manufactured chip into a shell; according to the photoelectric detector, the circuit of the semiconductor is optimized by using a Cascode technology, the gain of the photoelectric detector can be improved by adjusting the bias voltage of the circuit, configuring the gain circuit and processing external signals, and meanwhile, the influence on output impedance is reduced, so that the high-frequency performance and the linearity of the whole circuit are improved.

The application discloses a high-frequency transformer intelligent voltage regulation control circuit, and relates to the technical field of transformer voltage regulation, which comprises a micro-control module, a control variable output module, direct current power inversion, filtering, voltage transformation and rectification processing and power supply for connected electrical equipment, when expansion voltage supply is needed, the first voltage regulation module is controlled to invert and superimpose power with the variable output module, when voltage fine adjustment is needed, the second voltage regulation module is controlled to self-boost and superimpose power with the variable output module, when voltage reduction is needed, the auxiliary control module is controlled to rectify and store energy, and when the direct current power connected with the variable output module is powered off, the auxiliary control module is controlled to release stored power. The high-frequency transformer intelligent voltage regulation control circuit can realize power distribution, increase output voltage width, improve power supply efficiency, improve voltage gain and realize diverse voltage regulation.

The present invention discloses a three-level DC-AC inverter suitable for photovoltaic grid-connected hydrogen production, including: a first transformer and a second transformer, used to convert the direct current outputted by a photovoltaic direct current power supply into alternating current; a clamping circuit, connected to the primary coils of the first transformer and the second transformer, used to clamp the voltage of the primary coils of the first transformer and the second transformer, wherein the primary coils of the first transformer and the second transformer are connected in parallel and respectively connected to the photovoltaic direct current power supply; a three-level conversion circuit, connected to the secondary coils of the first transformer and the second transformer, used to boost and convert the alternating current outputted by the secondary coils of the first transformer and the second transformer into three-level alternating current, wherein the secondary coils of the first transformer and the second transformer are connected in series; and a grid-connected control circuit, used to connect the three-level alternating current outputted by the three-level conversion circuit to the hydrogen production grid. The present invention has high gain and can suppress the generation of leakage current.

The application discloses a non-isolated DC-DC converter based on a switched capacitor inductor and a control method. in The application discloses a non-isolated DC-DC converter based on a switched capacitor inductor, which comprises a direct-current voltage source V in , a first switch tube S1, a second switch tube S2, a first diode D1, a second diode D2, a third diode D3, a fourth diode D4, a first inductor L1, a second inductor L2, a first capacitor C1, a second capacitor C2, a third capacitor C3, a fourth capacitor C4 and an output load R0. The application connects capacitors in series between the direct-current voltage source and the output load, so that the non-isolated DC-DC converter has a voltage isolation effect and reliability is improved. Compared with other converters, the application has only two linear working modes, and operation is simple. Meanwhile, conduction loss is low, and the converter has high efficiency.

The application provides a high-gain secondary boost converter suitable for low-input occasions, and is based on the existing topology LIC-QBC and adopts a synchronous rectification technology to obtain an SLIC-QBC topology structure suitable for low-input voltage scenes; on the basis of the SLIC-QBC, topology reconstruction is carried out; input sides are connected in parallel, output sides are connected in series, the output capacitor C2 of the first SLIC-QBC is embedded between the inductor L2 and the switch tube S4 of the second SLIC-QBC, and a brand-new IPOS-2SLICQBC topology structure is obtained; finally, according to the topology reconstruction idea, the SLIC-QBC topology structure is generalized to n phases to obtain a general IPOS-nSLICQBC topology structure, and an output voltage expression is given, and it is illustrated that the topology has strong extensibility and can be well applied to application scenes of low-input voltage and high-voltage output.

The invention discloses a high-gain DC-DC converter modulated by an energy storage element, and belongs to the technical field of power management. According to the high-gain boost converter, high-voltage gain is achieved through charging and discharging of the inductor and the capacitor, the number of used capacitors is small, and the reliability of the high-gain boost converter is improved; the stress of the switching device in the embodiment is low under a relatively large duty ratio, and the voltage gain can be improved by utilizing the duty ratio; the driving signals of the two switching tubes are synchronous, so that the control circuit is simpler to realize; the structure is simple, and the total number of used devices is smaller; after the converter is expanded to be multi-phase, the power level of the converter is further improved, and after the switched capacitor of the converter is expanded to be n-order, the voltage of the converter is further improved.

A full-soft switching isolation bidirectional DC-DC converter with high voltage gain belongs to the technical field of power supplies, and is characterized in that one end of a switch S1p is connected with an inductor L1, a switch S2p and a capacitor C2p; one side of the switch S2p is connected with the inductor L1, the switch S1p and the capacitor C2p, and one end of the switch S2p is connected with the capacitor C1p; one end of the switch S1s is connected with the switch S2s and a secondary winding of the transformer; one end of the S2s is connected with the high-voltage side VH and the capacitor C2s, and the other end is connected with the switch S1s and the secondary winding of the transformer; one end of a primary winding of the transformer is connected with a capacitor C2p, one end of a secondary winding of the transformer is connected with a switch S1s and a switch S2s, and the other end is connected with C1s and C2s. One end of the inductor L1 is connected with the low-voltage side VL, and the other end of the inductor L1 is connected with the switches S1p and S2p and the capacitor C2p. One end of the capacitor C1p is connected with the switch S2p; one end of the capacitor C2p is connected with the inductor L1, the switch S1p and the switch S2p; one end of the capacitor C1s is connected with the capacitor C2s and the secondary winding of the transformer, and the other end is grounded; and one end of the capacitor C2s is connected with the high-voltage side VH and one end of the switch S2s is connected with the capacitor C1s and the secondary winding of the transformer. The topological structure of a traditional isolation DAB bidirectional DC-DC converter is improved, and the overall efficiency of the converter is improved.

The utility model provides a three-port high-gain direct-current converter which is characterized in that an input power supply Vin is sequentially connected with a capacitor C1, an inductor L2, a capacitor C2, a capacitor C3 and a diode D2 from an anode to a cathode; the first branch comprises a diode D3, a diode D4, a switching tube S1 and a switching tube S3 which are connected in sequence; one end of the inductor L1 is connected to the positive electrode of the input source, and the other end is connected between the capacitor C2 and the capacitor C3; the second branch comprises a switching tube S2 and a diode D1 which are connected in sequence; the positive electrode of the energy storage element is connected between the switch tube S1 and the switch tube S3, and the negative electrode of the energy storage element is connected between the switch tube S2 and the diode D1; and two ends of a branch formed by the capacitor C2 and the capacitor C3 are connected with a load R in parallel. The circuit has high voltage gain, has no voltage constraint, and simplifies the control difficulty of the system.

The application provides a non-electrolytic capacitor power converter for a permanent magnet synchronous motor and a control method thereof. The power converter comprises a rectifier circuit, a power decoupling circuit and a three-phase inverter bridge which are connected in series. The power decoupling circuit comprises a Boost converter and a pulsating power buffer circuit, and the output ends of the two circuits are connected in series with a small-capacity film capacitor of different values to form a DC bus of the non-electrolytic capacitor power converter. The Boost converter is used for controlling power quality of a power grid, and the output capacitor voltage contains DC and AC components. The pulsating power buffer circuit controls pulsating power of the power grid, realizes complementary voltage of the film capacitors of different values, and effectively suppresses DC bus voltage pulsation. In addition, the non-electrolytic capacitor power converter improves DC bus voltage gain and widens the speed range of the permanent magnet synchronous motor.