KR101769361B1 - Pulse power system and generating method of pulse power - Google Patents

Abstract

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a pulse power supply system and a pulse power output method, and a pulse power supply system according to an embodiment of the present invention includes a power supply unit to which external commercial power is supplied; A converter for converting commercial power supplied from the power supply unit into DC power; A high voltage converter for generating a voltage for applying pulse power to the xenon flash lamp, A discharge circuit for applying a pulse to the xenon flash lamp; A chimney power unit for initially lighting the xenon flash lamp; And a control unit for controlling the high voltage converter unit and the chimney power unit to be driven to apply a voltage to the xenon flash lamp. According to the present invention, by using a pulsed power supply system capable of UV curing by using an instantaneous pulse to a xenon flash lamp, it is possible to instantaneously transfer high UV energy to a coating material applied to an adhesive or a coating solution, There is an effect of being able to cure.

Description

≪ Desc / Clms Page number 1 > PULSE POWER SYSTEM AND PULSE POWER OUTPUT METHOD <

The present invention relates to a pulse power supply system and a pulse power output method, and more particularly, to a pulse power supply system and a pulse power output method for instantaneously emitting a xenon flash lamp or the like.

In general, a flexible substrate, a roll-to-roll apparatus, or a sintering system employs IR (infra red) or a method of continuously curing a UV light source for a long period of time.

However, the curing system has various problems such as poor curing of the product, thermal deformation, low adhesive force, boiling of the resin, bubble generation, surface cracking and yellowing during the curing process. This defect occurs because the product has to be cured at a high temperature for a long time.

Furthermore, even when curing is not carried out, there is a problem that unnecessary power is wasted because IR or UV must be continuously operated.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a pulsed power supply system and a pulsed power supply system for a sintering process capable of sintering metallic ink by outputting pulsed high energy to a xenon flash lamp for a short time, Power output method.

According to an aspect of the present invention, there is provided a pulse power supply system including: a power supply unit to which external commercial power is supplied; A converter for converting commercial power supplied from the power supply unit into DC power; A high voltage converter for generating a voltage for applying pulse power to the xenon flash lamp, A discharge circuit for applying a pulse to the xenon flash lamp; A chimney power unit for initially lighting the xenon flash lamp; And a control unit for controlling the high voltage converter unit and the chimney power unit to be driven to apply a voltage to the xenon flash lamp.

The apparatus may further include a trigger circuit unit for initially lighting the xenon flash lamp, and may further include an energy storage unit for charging by the control unit to minimize energy consumption during pulse discharge through the xenon flash lamp .

Also, the controller may control a voltage, a frequency, and a pulse duration for applying the xenon flash lamp to the xenon flash lamp so that the xenon flash lamp is initially driven and then the xenon flash lamp is driven in a set operation mode, Here, the operation mode may be a single mode for outputting one pulse having a predetermined duration with a predetermined voltage, a double mode for outputting pulses having the same or different durations with predetermined voltage at predetermined time intervals a continuous mode in which pulses having a constant pulse voltage and frequency and having the same duration are output at predetermined time intervals, and pulses are output in accordance with the set duration, frequency and number of pulses at a constant output voltage (Burst mode).

Here, the high-voltage converter unit may be a full-bridge resonance type converter, and the high-voltage converter unit may be a boost converter.

According to another aspect of the present invention, there is provided a pulse power output method comprising: transmitting a dimmer driving signal to a chimmer power source for initially driving a xenon flash lamp to output a pulse to a xenon flash lamp; Transmitting a trigger signal to the trigger circuit unit so that the trigger circuit unit for initially driving the Xenon flash lamp can operate when the chimney power unit is driven; And outputting a pulse to the xenon flash lamp by controlling the current of the chimney power supply unit when the trigger circuit unit is driven and the ignition of the xenon flash lamp operates normally.

And controlling the voltage of the chimeric power supply unit to be higher than a reference voltage when the chimeric driving signal is transmitted to the chimeric power unit. When the trigger circuit unit is driven and the ignition of the xenon flash lamp is normally operated, Controlling the current of the power source of the chimmer to be higher than or equal to the reference current, and outputting the pulse may be performed by controlling the current of the chimeric power unit. At this time, the step of outputting the pulse may be performed after a certain time delay after the step of controlling the current.

In addition, the step of outputting the pulse may output a pulse by controlling the DC link voltage to be higher than or equal to the reference voltage.

According to the present invention, by using a pulsed power supply system capable of UV curing by using an instantaneous pulse to a xenon flash lamp, it is possible to instantaneously transfer high UV energy to a coating material applied to an adhesive or a coating solution, There is an effect of being able to cure.

In addition, it is possible to deliver high energy instantaneously, shortening the manufacturing process time and minimizing the yellowing due to heat and the deformation of the product. When the pulse power system of the present invention is used, the present invention can be applied to a product to be cured or a product requiring sintering.

In addition, when the pulse power system for driving the xenon flash lamp is used, the ultraviolet penetrating power penetrating into the object to be cured is instantaneously pulsed, and unnecessary operation time is minimized, thereby saving energy. It is suitable for heat-sensitive products because it can be used at room temperature and it has the advantage of excellent uniformity of UV light.

1 is a block diagram illustrating a pulse power system for driving a xenon flash lamp in accordance with an embodiment of the present invention.
2 is a diagram illustrating a high voltage converter unit of a pulse power system according to an embodiment of the present invention.
3 is a flowchart illustrating a method of operating a pulse power system for driving a xenon flash lamp in a pulse power system according to an exemplary embodiment of the present invention.
4 is a view for explaining a pulse amplitude and a pulse duration with respect to time in the pulse power supply system according to the embodiment of the present invention.
5 is a diagram for explaining a pulse driving mode of a pulse power supply system according to an embodiment of the present invention.
6 is a view for explaining a method for controlling charging and discharging of an energy storage unit of a pulse power supply system according to an embodiment of the present invention and a pulse voltage and a current applied to a xenon flash lamp.

Preferred embodiments of the present invention will be described more specifically with reference to the accompanying drawings.

FIG. 1 is a block diagram illustrating a pulse power supply system for driving a xenon flash lamp according to an exemplary embodiment of the present invention. FIG. 2 is a block diagram of a high voltage converter unit 15 of a pulse power supply system according to an exemplary embodiment of the present invention. Fig.

1, the pulse power supply system 1 for driving the xenon flash lamp X of the present invention includes a power supply unit 11, an AC / DC conversion unit 13, a high-voltage converter unit 15, The discharge circuit 19, the xenon flash lamp X, the trigger circuit unit 21, the simmer power supply unit 23, the control unit 25, the display unit 27, and the communication unit 29 .

The power supply unit 11 is supplied with external commercial power and supplies power to the pulse power system 1. The external power supply unit 11 receives 220 V AC power from the outside.

The AC / DC conversion unit 13 converts the three-phase 220 V AC power supplied from the power supply unit 11 into a DC power. For this purpose, the AC / DC converter 13 may be configured as a three-phase current diode.

The high voltage converter section 15 is capable of zero voltage switch (ZVS) operation for the efficiency and reliability of the pulse power supply system 1 to generate a voltage for application to the xenon flash lamp X in an embodiment of the present invention. A full bridge resonance type converter may be used. A full bridge resonance type converter used in an embodiment of the present invention includes a resonance type converter, a resonance circuit, a transformer, and a rectifier. Among them, the transformer is provided for the insulation and voltage boosting, and the rectifier can be provided with a diode and a capacitor so as to convert the boosted AC to DC through the transformer.

In addition, unlike the embodiment of the present invention, the high-voltage converter section 15 may be provided with a boost converter composed of a boost inductor, a switching element, and a diode.

The energy storage unit 17 is configured to store energy at the time of pulse discharge in the pulse power supply system 1 and may be provided with a plurality of capacitors as required. The discharge circuit unit applies a pulse to the xenon flash lamp X . The trigger circuit portion 21 and the chimeric power portion 23 are provided for initial lighting the xenon flash lamp X. [

The control unit 25 is provided for forming and controlling pulses in the pulse power supply system 1. The control unit 25 controls the high voltage converter unit 15, the discharge circuit unit 19, the trigger circuit unit 21 and the chimeric power unit 23 do. The control unit 25 may include a gate driver for switching the high voltage converter unit 15 and a gate driver for driving the discharge circuit unit. And an interface unit for driving the trigger circuit unit 21 and the chimeric power unit 23. The interface unit can transmit the trigger signal to the trigger circuit unit 21 to drive the xenon flash lamp X and send the simmer operation signal for driving the simmer power unit 23 to the simmer power unit 23, Lt; / RTI >

The display unit 27 is connected to the controller 25 to monitor the operation state of the pulse power supply system 1 and may be configured as a man machine interface (MMI) display. Accordingly, the state of the pulse power supply system 1 can be confirmed by the user, and information such as data can be inputted as needed. If the communication unit 29 is capable of communicating with an external controller, the communication unit 29 may be provided with a PLC or RS-485 communication in one embodiment of the present invention.

3 is a flowchart illustrating a method of operating a pulse power system for driving a xenon flash lamp X of the pulse power system 1 according to an embodiment of the present invention.

For the life and efficiency of the xenon flash lamp X to which the main power is applied, the initial lighting is performed using the primer power supply unit 23 and the trigger circuit unit 21, the current is controlled from several mA to several A, (X) so that the current always flows constantly. The pulse can be operated by setting the voltage and frequency to be applied to the xenon flash lamp X, the pulse duration time, and the operation mode after the xenon flash lamp X is initially turned on.

3, in order to drive the pulse power supply system 1, the control unit 25 transmits a simmer drive signal for driving the simmer power unit 23 to the simmer power unit 23 to drive the simmer power unit 23 (S101). At this time, the control unit 25 controls the voltage of the chimeric power unit 23 (S102). If the voltage value of the controlled chimeric power supply unit 23 is greater than or equal to the voltage value of the reference chimeric power supply unit 23 at step S103, (S104). If the voltage value of the controlled chimeric power supply unit 23 is smaller than the voltage value of the reference chimney power supply unit 23, the simmered voltage is controlled again.

When the signal is sent to the trigger circuit unit 21, the controller 25 determines whether the ignition of the xenon flash lamp X is normal (S105). If the signal is normal, the controller 25 controls the current of the chimeric power unit 23 (S106). If the current value of the controlled chimeric power supply unit 23 is smaller than the current value of the reference chimeric power supply unit 23 (S108) after about 1 second of delay (S107) The number of times that the operation of the power unit 23 fails and the operation of the power unit 23 is failed (S121). Here, when the ignition of the xenon flash lamp X is not normal, the voltage of the chimeric power supply unit 23 is controlled again.

At this time, it is determined whether the operation of the chimeric power unit 23 has failed more than three times (S122). If the operation fails more than three times, an alarm indicating that the operation of the chimeric power unit 23 has failed (S123) The operation of the system 1 is stopped (S124). When the operation of the chimeric power unit 23 is three or less, the voltage of the chimeric power unit 23 is controlled again.

The pulse operation of the xenon flash lamp X is started (S109) when the current value of the controlled hight power unit 23 is equal to or greater than the current of the reference hight power unit 23. Then, the DC link voltage is controlled (S110). At this time, the controlled DC link voltage value is compared with the reference DC link voltage value (S111). If the controlled DC link voltage value is smaller than the reference DC link voltage value, the DC link voltage value is controlled again, The pulse output voltage is output (S112). After the pulse output is completed (S113), the pulse operation ready state is maintained (S114).

4 is a diagram for explaining a pulse amplitude and a pulse duration over time of the pulse power supply system 1 according to an embodiment of the present invention.

The method of forming the pulse for driving the xenon flash lamp X using the above-described pulse power supply system 1 is as follows. As shown in Fig. 4 (a), in the state where the pulse duration is constant, The amplitude (amplitude) can be varied. In this case, in one embodiment of the present invention, the voltage magnitude of the pulse may be 1 kV to 3 kV. Also, as shown in FIG. 4 (b), the pulse duration can be varied while maintaining the voltage magnitude of the pulse constant. The control unit 25 receives information on the voltage and current of the power stored in the energy storage unit 17 and controls the voltage of the energy storage unit 17 through the high voltage converter unit 15 based on the received information So that the voltage applied to the xenon flash lamp X can be controlled to control the voltage magnitude of the pulse and the pulse driving time.

5 is a diagram for explaining a pulse driving mode of a pulse power supply system according to an embodiment of the present invention.

The pulse drive mode of the pulse power supply system 1 when driving the xenon flash lamp X in one embodiment of the present invention may be implemented in various modes as shown in Figures 5 (a) to 5 (d) Can be driven.

As shown in FIG. 5 (a), can be driven in a single mode, and can be driven in a double mode, as shown in FIG. 5 (b). The single mode is a mode for outputting only one pulse having a predetermined duration with a set voltage, and the double mode is a mode for outputting pulses having the same or different duration with a set voltage at predetermined time intervals. In addition, as shown in FIG. 5 (c), it can be driven in a continuous mode and can be driven in a burst mode, as shown in FIG. 5 (d). The continuous mode is a mode in which pulses having a constant pulse voltage and frequency and having the same duration are continuously output at predetermined time intervals. In the burst mode, a pulse having a constant output voltage, a frequency, Output mode.

6 is a flowchart illustrating a method for controlling charging and discharging of the energy storage unit 17 of the pulse power supply system 1 according to an embodiment of the present invention and a method for controlling charge / FIG.

The voltage to be applied to the pulse is inputted from the display unit 27 of the external communication or the front panel for charging / discharging of the energy storing unit 17, and the voltage applied to the pulse is charged in the high-voltage converter unit 15, The discharged energy can be charged in real time. Thus, the energy consumed in discharging can be minimized, and the pulse voltage and current applied to the xenon flash lamp X in the burst mode and the continuous mode in the operation mode can be kept constant.

At this time, the charge / discharge cycle of the energy storage unit 17 can be divided into nine periods when the number of bursts is two in the burst mode. Referring to FIG. 6, T1 is a time for boosting to a voltage to be applied to the xenon flash lamp X input from the display unit 27 or an external device, T2 is a time for reaching the input voltage, It is time. And T3 is a time for discharging during the duration of the pulse discharge, which may be a minimum of 100 microseconds to a maximum of 2 ms, and T4 is the time for completing the pulse discharge and charging to the set voltage. T5 is the time to wait until the next discharge and T6 to T8 is the time during which the high voltage converter operates during the time for applying the second pulse to the xenon flash lamp X. [ T9 denotes a time when the operation of the pulse power supply system 1 is completed and the high voltage converter unit 15 is stopped. At this time, the time from T3 to T5 can be set freely from 100 ms to 1 s.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed exemplary embodiments. It should be understood that the scope of the present invention is to be understood as the scope of the following claims and their equivalents.

1: Pulsed power system
11: power supply unit 13: AC / DC conversion unit
15: High-voltage converter section 17: Energy storage section
19: discharge circuit part 21: trigger circuit part
23: Simmer power unit 25: Control unit
27: display unit 29: communication unit
X: Xenon flash lamp

Claims (12)

A power supply unit to which external commercial power is supplied;
A converter for converting commercial power supplied from the power supply unit into DC power;
A high voltage converter for generating a voltage for applying a pulse power to a xenon flash lamp which is supplied with the DC power converted by the converter and emits ultraviolet rays;
A discharge circuit for applying a pulse to the xenon flash lamp;
A chimney power unit for initially lighting the xenon flash lamp;
A trigger circuit unit for initially lighting the xenon flash lamp; And
And a control unit for controlling the high voltage converter unit and the chimney power unit to be driven to apply a voltage to the xenon flash lamp,
Wherein the controller controls the voltage of the chimmer power supply unit to be higher than the reference voltage by driving the chimney power supply unit and drives the trigger circuit unit so that when the ignition of the xenon flash lamp is normally operated, And outputs a pulse to the Xenon flash lamp as the current of the chimney power unit is controlled,
The control unit records the number of failures of the operation of the chimeric power unit because the current of the chimeric power unit is less than the reference current and generates an operation failure alarm of the chimeric power unit if the number of times is more than a predetermined value. A pulsed power system that stops. delete The method according to claim 1,
Further comprising an energy storage for charging by the controller to minimize energy consumption during pulse discharge through the xenon flash lamp. The method according to claim 1,
Wherein the controller controls a voltage, a frequency, and a pulse duration to be applied to the xenon flash lamp so that the xenon flash lamp is initially turned on and then the xenon flash lamp is driven in a set operation mode. The method of claim 4,
The operation mode includes a single mode for outputting one pulse having a predetermined duration with a predetermined voltage, a double mode for outputting pulses having the same or different durations with predetermined voltage at predetermined time intervals, A continuous mode for outputting a pulse having a constant pulse voltage and frequency and having the same duration at predetermined time intervals, and a burst for outputting a pulse according to a set duration, frequency, and pulse number with a constant output voltage, Pulsed power system. The method according to claim 1,
Wherein the high voltage converter unit is a full bridge resonance type converter. The method according to claim 1,
Wherein the high voltage converter is a boost converter. A pulse power output method for a pulsed power system,
Transmitting a chimeric driving signal to a chimeric power source for initially driving the xenon flash lamp to output a pulse to a xenon flash lamp that emits ultraviolet light;
Controlling the voltage of the chimeric power unit to be higher than a reference voltage;
Transmitting a trigger signal to the trigger circuit unit so that the trigger circuit unit for initially driving the Xenon flash lamp can operate when the chimney power unit is driven;
Controlling the current of the chimney power supply unit to be higher than or equal to a reference current when the trigger circuit unit is driven and the ignition of the xenon flash lamp operates normally; And
And outputting a pulse to the xenon flash lamp as the current of the chimney power unit is controlled,
Wherein the step of outputting the pulse is performed after a certain time delay after the step of controlling the current,
Determining whether the current of the chimeric power unit is less than the reference current;
Recording the number of times that the operation of the chimney power unit is failed due to the current of the chimney power unit being smaller than the reference current;
Generating an operation failure alarm of the chimeric power unit if the number of failed operation failures is equal to or greater than a predetermined value; And
And stopping the operation of the pulse power supply system when the number of operation failures is equal to or greater than a predetermined value. delete delete delete The method of claim 8,
Wherein the step of outputting the pulse outputs the pulse by controlling the DC link voltage to be equal to or higher than the reference voltage.

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