5results 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 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 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.