The invention relates to a plasma jet device and a method for suppressing charge accumulation on an epoxy resin surface. The plasma jet device comprises a hollow metal capillary tube and a heating platform, wherein a quartz glass tube sleeves the outside of the hollow metal capillary tube; the hollow metal capillary tube and the quartz glass tube are combined into a jet pipe of atmospheric plasma jet; the jet pipe is connected with a high-voltage power supply and simultaneously grounded; an air inlet is arranged in the top end of the hollow metal capillary tube; the heating platform is located at the bottom part of the jet pipe; a sample is placed on the heating platform; and the heating platform is grounded. The device is simple in structure; the method is simple and feasible; the effect is lasting; the treatment efficiency is high; and the environmental influence is small, so that the plasma jet device is suitable for industrial production and application.

Plasma jet device and method for suppressing charge accumulation on epoxy resin surface

The invention discloses a high-voltage pulse power supply for the synchronous discharge of multiple spark plasma synthetic jet actuators, and the power supply comprises a main circuit module which is used for generating multiple synchronous negative high-voltage pulses; a control circuit module which is used for generating an IGBT switch drive signal; a power supply module which is used for supplying power to a main circuit module and a control circuit module; and a protection circuit module, wherein a thyristor switch in the protection circuit module is connected with an IGBT switch in the control circuit module The power supply module is connected with the main circuit module and the control circuit module The protection circuit module is connected with the main circuit module and the control circuit module The control circuit module is connected with the main circuit module The beneficial effects of the invention are that the structure is simple and compact; the plasma synthetic jet speed is high and the work efficiency is high; the power supply can output multiple 10kV negative high-voltage pulses synchronously to achieve the synchronous excitation of a plurality of spark plasma synthetic jet actuators, achieves the synchronous discharge of the plurality of spark plasma synthetic jet actuators, and enables the discharge current of a single spark plasma synthetic jet actuator to be greater than 100A

High-voltage pulse power supply for synchronous discharge of multiple spark plasma synthetic jet actuators

The invention discloses a plasma synthesis jet flow serial connection discharge device based on a Marx generator. The negative pole of a direct current source is grounded, and the positive pole of the direct current source is connected with one end of a charge resistor; the other end of the charge resistor is connected with the positive poles of multiple charge diodes; the negative poles of the multiple charge diodes are connected with one ends of multiple charge capacitors; the other ends of the multiple charge capacitors are connected with the positive poles of multiple discharge diodes; multiple plasma synthesis jet flow exciters are connected to the negative poles of the charge diodes and the negative poles of the discharge diodes in parallel; a discharge resistor is arranged between two discharge diodes; the negative poles of the discharge diodes are grounded; ground electrodes of the plasma synthesis jet flow exciters are grounded; and two ends of a load are connected to the positive pole of the first discharge diode and the negative pole of the last discharge diode in parallel. The plasma synthesis jet flow serial connection discharge device has the following beneficial effects: when the multiple plasma synthesis jet flow exciters are serially connected to synchronously discharge, multi-way superposition pulses are formed at two ends of the load, so that the multi-angle and wide-range flow control can be realized in high-speed flowing field control field, and the high-voltage discharge experimental study can be performed.

Plasma synthesis jet flow serial connection discharge device based on Marx generator

The invention discloses a device and a method for synchronous discharge of multiple plasma synthetic jet actuators. The method comprises the following steps: providing a power source for a pulse generator module by a first power supply, and using a pulse generator to provide a driving signal for the switch of a switching synchronization drive circuit; providing a power source for the switching synchronization drive circuit by a second power supply, and using the switching synchronization drive circuit to provide a synchronous trigger signal for switches of multiple high-voltage pulse circuits; providing a power source for the high-voltage pulse circuits comprising multiple high-voltage pulse circuit modules by a third power supply, and enabling the high-voltage pulse circuits to be matched with the plasma synthetic jet actuators to generate multipath plasma synthetic jet flows. The device and the method have the beneficial effects that the multiple plasma synthetic jet actuators synchronously run, the discharge current exceeds 100A, and a powerful synthetic jet can be generated; the device is compact in structure and is capable of running for a long time.

Device and method for synchronous discharge of multiple plasma synthetic jet actuators

The invention provides a light-operated monopulse triggering system used for a polysilicon crushing device. A light pulse signal generator (1) outputs a monopulse light signal which triggers a silicon controlled rectifier in an electric pulse trigger signal generation system (13) to produce a high-voltage monopulse trigger signal that is needed by an air switch. A mains AC power supply (4) outputs direct current after rectification by a full-bridge rectifier (5); the direct current charges an electrolytic capacitor (7) through a charging resistor (6); the light pulse signal generator (1) is triggered and outputs the monopulse light signal; the monopulse light signal is converted into a monopulse electric signal through a light-electric conversion circuit (2); the monopulse electric signal enters an enhanced drive circuit (3) and is amplified into a trigger signal for the silicon controlled rectifier (8); the trigger signal is sent to a trigger electrode of the silicon controlled rectifier (8) so as to allow the primary side of a pulse transformer (9) to obtain a low-voltage pulse trigger signal; and the pulse transformer (9) converts the low-voltage pulse trigger signal into the high-voltage trigger signal used for triggering the air switch.

Light-operated monopulse triggering system used for polysilicon crushing device

Provided is a unipolar microsecond pulse high voltage power supply. The unipolar microsecond pulse high voltage power supply comprises a main circuit system (110) and a control system (100). The main circuit system (110) finishes energy storing and charging of a power module of each stage, and the power module of each stage finishes discharging to load under the control of drive signals of the control system (100) and outputs unipolar microsecond pulse high voltage. The control system (100) generates level signals, the level signals are transmitted to a switch drive circuit of the main circuit system for generating drive control signals, so that connection and disconnection of a main circuit system switch is controlled, and pulse output is obtained at the tail end of the main circuit system. Low voltage pulses obtained by each single stage power module through discharging on a load matching resistor are added for obtaining high voltage pulses, the pulses of a plurality of stages are added synchronously so that square-wave pulses can be obtained, and then the work mode of the control system (100) is a synchronous trigger mode. Triangular waves with step edges can be obtained through delayed adding, and then the work mode of the control system (100) is a delayed trigger mode.

Unipolar microsecond pulse high voltage power supply

The invention relates to a repetition-frequency high-voltage microsecond pulsed power supply. According to the repetition-frequency high-voltage microsecond pulsed power supply, a resonant voltage-multiplying charging loop (120) is in cascade connection with a voltage-increasing output circuit (116); the voltage-increasing output circuit (116) is connected to the two ends of a load (118); an auxiliary circuit (110) is connected to the two ends of the voltage-increasing output circuit (116); an absorbing protection circuit (114) is connected to the two ends of a switch (108); and a trigger control circuit (112) is connected to one end of the switch (108). The resonant voltage-multiplying charging loop (120) provides initial pulse to the voltage-increasing output circuit (116), so that the voltage-increasing output circuit (116) outputs high-voltage microsecond pulse to the load (118); the auxiliary circuit (110) switches two charging modes of the resonant voltage-multiplying charging loop (120); the absorbing protection circuit (114) protects the switch of the resonant voltage-multiplying charging loop (120); and the trigger control circuit (112) controls off and on of the switch of the resonant voltage-multiplying charging loop (120) and realizes isolation between the resonant voltage-multiplying charging loop (120) and the voltage-increasing output circuit (116).

Repetition-frequency high-voltage microsecond pulsed power supply

A program-control pulse generator used for a repetition frequency high-voltage pulse power supply comprises an ARM (advanced RISC machine) microprocessor (3), a main power supply (5), an auxiliary power supply (4) and a power amplifying circuit (6). Functions of inputting 220V-voltage alternating current and outputting 1V to 15V voltage after rectifying, filtering and pulse transforming and transforming adjustment are realized by a main structure of the main supply (5). Functions of power factor correction and voltage stabilizing control of the main power supply are realized by a main power supply voltage control circuit of the main power supply (5). A 5V voltage output end and a 1V to 15V voltage output end of the main power supply (5) are connected to a power supply pin and a data receiving pin of the ARM microprocessor (3) through leads and are connected to an input end of the power amplifying circuit (6) from an I/O (input/output) output pin of the ARM microprocessor. The auxiliary power supply (4) stabilizes the 5V voltage and the 15V voltage and provides power for driving the ARM microprocessor (3) and an IGBT (insulated gate bipolar translator), and the power amplifying circuit (6) provides trigger signals for a driver of a switch device.

Shao Tao

Papers

Unipolar microsecond pulse high voltage power supply

Repetition-frequency high-voltage microsecond pulsed power supply

Program-control pulse generator used for repetition frequency high-voltage pulse power supply

High-voltage pulse power supply for synchronous discharge of multiple spark plasma synthetic jet actuators

Plasma synthesis jet flow serial connection discharge device based on Marx generator