KR20160062976A - Micro Pulse System, Electrostatic Precipitator Having The Same, and Method for Controlling Micro Pulse System - Google Patents

Abstract

A micro-pulse system according to one aspect of the present invention can control operating parameters according to a rapping state of an electrostatic precipitator. The micro-pulse system includes a direct current (DC) voltage supply unit, a pulse voltage supply unit, and a control unit. The voltage supply unit supplies DC voltage to the electrostatic precipitator. The pulse voltage supply unit supplies pulse voltage according to a predetermined pulse frequency to the electrostatic precipitator. The control unit monitors an on/off state of a rapping signal applied to the electrostatic precipitator for rapping, and controls the operation of the electrostatic precipitator according to the on/off state of the rapping signal.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a micro-pulse system, an electrostatic precipitator including the micro-pulse system,

The present invention relates to a micropulse system, and more particularly to a micropulse system for an electrostatic precipitator.

BACKGROUND ART A micro pulse system (MPS) is a device for generating a pulse having a short width in microseconds (μs), and is applied to an environmental facility such as an electric dust collector or a deodorization system.

When the micropulse system is applied to an electrostatic precipitator, the micropulse system applies a pulse voltage to the discharge electrode to generate a corona discharge through the discharge electrode, thereby discharging the negative ions into the air. As a result, Energize the dust by surrounding the dust. In the micropulse system, a DC voltage is applied to the dust collecting plate to move the ionized dust to the dust collecting plate, so that the negative ions return to the power source through the dust collecting plate. The dust that has lost the negative ions can not stay in the dust collecting plate, (Not shown).

A representative example of a micro-pulse system applied to an electric dust collector is disclosed in Korean Patent Publication No. 10-2012-0064516.

In the case of the conventional micropulse system, it has been common to continuously control operation so that the operating parameters including the DC voltage, the pulse voltage, and the pulse frequency of the micropulse system become a predetermined upper limit value.

As described above, if the operation control of the micropulse system is continuously controlled according to the predetermined upper limit value, stress damage may occur in the power supply device of the micropulse system and the lifetime of the micropulse system may be reduced .

In addition, in the case of the conventional micropulse system, since the detection of DC voltage for DC voltage control frequently occurs, there is a problem that the dust collection efficiency of the electrostatic precipitator is lowered.

SUMMARY OF THE INVENTION The present invention provides a micropulse system capable of controlling operation according to whether or not the electrical dust collector is being rapped, an electric dust collector including the same, and a micropulse system control method. As a technical problem.

Another object of the present invention is to provide a micropulse system capable of minimizing the number of DC voltage detection, an electric dust collector including the same, and a control method of a micropulse system.

It is another object of the present invention to provide a micropulse system capable of reducing stress damage due to continuous use of a micropulse system, an electric dust collector including the micropulse system, and a control method of a micropulse system.

Another object of the present invention is to provide a micropulse system capable of improving the exhausting ability of an electric dust collector, an electric dust collector including the same, and a control method of a micropulse system.

According to an aspect of the present invention, there is provided a micropulse system including: a DC voltage supply unit for supplying a DC voltage to an electrostatic precipitator; A pulse voltage supplier for supplying a pulse voltage according to a predetermined pulse frequency to the electric dust collector; And a control unit for monitoring on / off of a rapping signal applied to the electrostatic precipitator for chattering and controlling the operation of the electrostatic precipitator according to on / off of the wrapping signal .

According to an aspect of the present invention, there is provided an electric dust collecting apparatus including an electric discharge electrode and a dust collecting plate, the electric dust collecting apparatus comprising: A dust collector for removing dust contained in the exhaust gas; A PLC (Programmable Logic Controller) for controlling the operation of the dust collector and applying a lapping signal for the chatter of the dust collector to the dust collector; And a micro pulse system for generating and applying the DC voltage and the pulse voltage to the dust collector, wherein the micropulse system receives the on / off state of the wrapping signal from the PLC, And a control unit for controlling the operation of the dust collector according to on / off of the lapping signal.

According to another aspect of the present invention, there is provided a control method of a micropulse system, including: supplying a DC voltage to a DC power supply unit and a pulse voltage according to a predetermined pulse frequency to an electrostatic precipitator; The method comprising the steps of: monitoring on / off of a lapping signal applied to the electrostatic precipitator for recollection; And controlling operation of the electric dust collector according to on / off of the wrapping signal.

According to the present invention, it is possible to variably control the pulse frequency and the DC voltage depending on whether the electric dust collector is being rapped or not, thereby enabling the micropulse system to operate more efficiently.

Further, according to the present invention, since the DC voltage is detected during the lapping period of the electric dust collector, the detection frequency of the DC voltage can be minimized, thereby improving the dust collecting efficiency of the electric dust collector .

Further, since the pulse frequency is turned off during the lapping operation of the electric dust collector, it is possible to reduce stress damage due to continuous use of the pulse voltage, thereby improving the lifetime of the micropulse system. have.

In addition, since the pulse frequency is turned off during the lapping time of the electric dust collector, it is possible to improve the dust collecting ability of the dust collecting apparatus, thereby keeping the dust concentration of the dust collecting apparatus below the legal standard Can be effective.

1 is a view illustrating a configuration of an electric dust collector according to an embodiment of the present invention.
2 is a block diagram schematically illustrating the configuration of the micro-pulse system shown in FIG.
3 is a block diagram schematically showing the configuration of the DC voltage regulator shown in FIG.
4 is a flowchart illustrating a method of controlling a micro-pulse system according to an exemplary embodiment of the present invention.
5 is a flowchart showing a method of executing the DC voltage control routine shown in FIG.

The meaning of the terms described herein should be understood as follows.

The word " first, "" second," and the like, used to distinguish one element from another, are to be understood to include plural representations unless the context clearly dictates otherwise. The scope of the right should not be limited by these terms.

It should be understood that the terms "comprises" or "having" does not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, or combinations thereof.

It should be understood that the term "at least one" includes all possible combinations from one or more related items. For example, the meaning of "at least one of the first item, the second item and the third item" means not only the first item, the second item or the third item, but also the second item and the second item among the first item, Means any combination of items that can be presented from more than one.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

<Electric dust collector>

1 is a schematic view showing a configuration of an electric dust collector according to an embodiment of the present invention.

1, an electrostatic precipitator 100 according to an embodiment of the present invention includes a dust collector 110, a PLC 120, a micropulse system 130,

The dust collector 110 applies a negative charge to a discharge electrode (not shown) in a dust collecting chamber (not shown) and electrostatically generates a potential difference with a dust collecting plate (not shown) The suspended particulate matter is charged and collected. Particularly, the dust collector 110 according to the present invention can efficiently exhaust dust collected on the dust collecting plate without re-scattering by receiving the DC voltage and the pulse voltage superimposed and applied from the micro-pulse system 130, .

Here, the DC voltage forms a fixed electric field between the electrodes to prevent re-scattering of the dust collected on the dust collecting plate, and the pulse voltage charges the floating dust to move it to the dust collecting plate.

The dust collector 110 operates according to a control command input from a PLC (Programmable Logic Controller) 120 and transfers the status data of the dust collector 110 to the PLC 120. The state data of the dust collector 110 includes data such as an operation state of the band heater, a flow rate of dust, a ground state of the dust collector 110, a rapper state, and a hopper state.

In one embodiment, the dust collector 110 performs a chatter according to the applied lapping signal when a rapping signal for the chattering of the dust collector 110 is applied from the PLC 120, thereby dusting the dust collected on the dust collecting plate .

Lapping refers to an operation of removing dust attached to a discharge electrode and a dust collecting plate to maintain a dust collection rate at a certain level. The charged particles move to a dust collecting plate and are collected, and a part of the particles are separated by a positive charge, The lapping is performed not only on the dust collecting plate but also on the discharge electrode.

Specifically, the dust collector 110 periodically performs chatter or vibration generation at a predetermined time interval according to a lapping signal input from the PLC 120, and a force of about a range that does not damage the electrode mechanism by an impact force or a vibrating force By dropping the trapping layer in a lump state, dust is prevented from being re-dispersed.

For such lapping, the dust collector may include a wrapper (not shown). In one embodiment, the wrapper can be modeled as an electric machine type, an electronic contingency type, and a vibration type.

Motor-Driver Swing Hammer is used in horizontal type dust collectors, especially in large dust collectors. A shaft driven by a motor disposed horizontally is installed in a direction perpendicular to the dust collecting plate and a hammer installed at the tip of the arm at a certain angle is rotated by an anvil of the dust collecting plate Anvil). The adjustment of the chatter strength is controlled by the rotation speed of the shaft, the length of the arm and the operating time.

Magnetic Rapper (Magnetic Rapper) is composed of an electronic coil and a hammer. When a current flows in a coil, it performs a chatter by its attractive force. The excitation force can be adjusted by changing the energization time of the current on the pulse applied to the coil, the stroke of the hammer, and the like.

The vibration type (Vibrator) is an induction motor in which an adjustable unbalanced weight is installed. The vibration power can be adjusted by changing the weight and angle of the unbalanced weight.

The PLC 120 inputs a control command for controlling the operation of the dust collector 110 to the dust collector 110 and receives the status information of the dust collector 110 from the dust collector 110. The PLC 120 also communicates the status information of the dust collector 110 received from the dust collector 110 to the HMI 140 and receives commands for controlling the PLC 120 or the dust collector 110 from the HMI.

In one embodiment, the PLC 120 controls the on / off state of the lapping signal applied to the dust collector 110 to control the micropulse system 130 according to the lapping state of the dust collector 110, 130).

The micropulse system 130 superimposes and applies the DC voltage and the pulse voltage to the dust collector 110. The configuration of such a micropulse system 130 will be described in more detail with reference to FIG.

2 is a block diagram schematically illustrating a configuration of a micro-pulse system according to an embodiment of the present invention.

2, the micropulse system 130 according to an exemplary embodiment of the present invention includes a DC voltage supply unit 210, a pulse voltage supply unit 220, and a control unit 230. As shown in FIG.

The DC voltage supply unit 210 generates a negative DC voltage to supply a negative DC voltage to a discharge electrode included in the dust collecting chamber.

The pulse voltage supply unit 220 supplies a pulse voltage to the dust collecting plate of the dust collecting chamber and includes a DC voltage generating unit (not shown), a charging capacitor (not shown), and a switching device (not shown).

The DC voltage generating section generates a positive DC voltage for the pulse voltage.

The charging capacitor is connected to the DC voltage supply unit 210 at one end and connected to the DC voltage generating unit to generate a negative DC voltage supplied from the DC power supply unit 210 and a negative DC voltage supplied from the DC voltage generating unit (+) DC voltage is used to perform charging. Also, the charging capacitor discharges the charged voltage to the dust collecting plate included in the dust collecting chamber so that the pulse voltage is applied to the dust collecting plate.

The switching element is connected to the terminal of the charge capacitor connected to the direct current voltage generating part so that the voltage charged in the charge capacitor is discharged to the dust collecting plate in the form of a pulse having a predetermined pulse frequency. That is, the switching element allows the voltage charged in the charge capacitor to be applied to the dust collecting plate in the form of a pulse voltage through the on-off operation.

The controller 230 controls the operation of the micropulse system 130 by controlling operation parameters including the DC voltage of the micropulse system 130, the pulse voltage, and the pulse frequency.

More specifically, the controller 230 controls the upper limit value of the DC voltage output from the DC voltage supplier 130 (hereinafter referred to as the 'DC voltage upper limit value'), the upper limit value of the pulse voltage output from the pulse voltage supplier 130 (Hereinafter, referred to as a 'pulse frequency upper limit value') is set and applied to the dust collector 110 according to the DC voltage upper limit value, the pulse voltage upper limit value, and the pulse frequency upper limit value DC voltage, pulse voltage, and pulse frequency.

In particular, the control unit 230 according to the present invention receives whether the wrapping signal is ON or OFF from the PLC 120, and adjusts the pulse frequency and the DC voltage according to whether the received wrapping signal is ON or OFF. 2, the control unit 230 includes an upper limit setting unit 232, a pulse frequency adjuster 234, a pulse voltage regulator 236, and a DC voltage regulator 238 .

The upper limit value setting unit 232 sets the DC voltage upper limit value, the pulse voltage upper limit value, and the pulse frequency upper limit value by executing a predetermined voltage-current curve (V-I). In one embodiment, the upper limit setting unit 232 may set the DC voltage upper limit value using the predetermined voltage-current curve (V-I Curve) and set the value obtained by multiplying the set DC voltage upper limit value N by the pulse voltage upper limit value. The upper limit value setting unit 232 may set an arbitrary frequency value input from the driver to the pulse frequency upper limit value.

In addition, the upper limit value setting unit 232 can set the corona current (I-CORONA) by setting a predetermined DC current value (e.g., 200 mA) to the DC current upper limit value and using the following equation (1).

In Equation (1), K denotes the estimated current per collecting plate area, N denotes the number of the charging devices, and a denotes the weight. In one embodiment, a may be set to 1.2.

The pulse frequency adjuster 234 receives whether the wrapping signal is turned on / off from the PLC 120, and executes a pulse frequency control routine according to the on / off of the wrapping signal to vary the pulse frequency.

More specifically, when it is determined that the lapping signal is in the ON state, the pulse frequency controller 234 sets a pulse frequency control routine for varying the pulse frequency to OFF by setting the value of the pulse frequency applied to the dust collector 110 to 0 .

Further, when it is determined that the lapping signal is in the off state, the pulse frequency adjuster 234 executes a pulse frequency control routine for stepping up the pulse frequency by a predetermined ratio (RAMP_PRF) such that the pulse frequency becomes the predetermined pulse frequency upper limit value .

In one embodiment, the pulse frequency controller 234 monitors the pulse voltage being applied to the dust collector 110 and, if the monitored pulse voltage is greater than or equal to a predetermined initial value (e.g., 20 KV) Can be executed.

The pulse frequency regulator 134 can monitor the pulse voltage being applied to the current dust collector 110 by receiving the pulse voltage being applied to the dust collector from the pulse voltage regulator 236. [

As described above, since the pulse frequency is set to the OFF state while the wrapping signal is being applied to the dust collector 110, by operating the pulse voltage supply unit 220 in the dormant state while the wrapping signal is being applied, It is possible to reduce the stress damage due to continuous use of the battery 220.

Further, since the pulse frequency is set to the OFF state while the lapping signal is being applied to the dust collector 110, it is possible to prevent the floating dust from being collected on the dust collecting plate in the dust collecting chamber to improve the dust removing ability of the dust collector 110 .

The pulse voltage regulator 236 regulates the pulse voltage according to a predetermined pulse voltage control routine. In one embodiment, the pulse voltage regulator 236 can adjust the pulse voltage using the value of the DC current and the temperature variation of the dust collecting chamber in accordance with the pulse voltage control routine. That is, the pulse voltage regulator 236 determines whether or not the value of the DC current is larger than the first threshold value and whether the temperature variation of the dust collecting chamber is larger than the second threshold value. If the pulse voltage is within the pulse voltage upper limit value range In a stepwise manner.

When the DC voltage regulator 138 determines that the wrapping signal is on and the pulse frequency is set to the off state by the pulse frequency regulator 234, the DC voltage control routine is executed to vary the DC voltage. That is, the DC voltage regulator 238 detects the DC voltage and the DC current of the dust collector 110 by executing the predetermined DC voltage control routine when the lapping signal is turned on and the pulse frequency is set to the OFF state, And varies the DC voltage to be applied to the dust collector 110 based on the current.

The configuration of the DC voltage regulator 238 will be described in more detail with reference to FIG.

3 is a block diagram schematically illustrating the configuration of a DC voltage regulator according to an embodiment of the present invention. 3, the direct current voltage regulator 238 includes a direct current voltage detector 310, an average value calculator 320, and a voltage setting unit 330. [

First, the DC voltage detection unit 310 determines the state of the lapping signal and the state of the pulse frequency. If it is determined that the lapping signal is on and the pulse frequency is off, the first DC Search for voltage.

The average value calculating unit 320 increases the first DC voltage detected by the DC voltage detecting unit 310 by a predetermined voltage increment VDC_SRCH and sets the second DC voltage to a second DC voltage and for a predetermined period of time SEAR_TIME, And detects the DC current IDC at the inverter 110. The average value calculation unit 320 calculates an average value of the DC current detected during the predetermined time after a predetermined time has elapsed.

The voltage setting unit 330 compares the average value of the direct current by the average value calculating unit 320 with the corona current I_CORONA set by the upper limit setting unit 230 and applies it to the dust collector 110 according to the comparison result The third DC voltage is set.

More specifically, the voltage setting unit 330 compares the average value of the direct current with the corona current reflecting the first current weight (the first current weight is a real number greater than 1), and when the average value of the comparison result is less than the first weight (VDC_STBCK) reflecting the first voltage weight (the first voltage weight is a real number larger than 1) and the voltage increment are set to the third DC voltage when the second DC voltage is larger than the reflected corona current .

On the other hand, if the average value of the DC current is not larger than the corona current reflecting the first current weight but larger than the corona current, the voltage setting unit 330 sets the second voltage weight (the second voltage weight is smaller than 1 And the third DC voltage is set to a value decreased by the increment of the setback voltage and the voltage increment.

On the other hand, if the average value of the direct current is not larger than the corona current, the voltage setting unit 330 sets the value obtained by decreasing the second direct voltage by the voltage increment as the value of the third direct voltage.

As described above, according to the present invention, since the DC voltage is detected by detecting the DC voltage only during the lapping period of the dust collector 110, the number of times of detection of the DC voltage can be minimized, The dust collecting efficiency can be improved.

1, the HMI (Human Machine Interface) 140 receives the status information of the dust collector 110 and the status information of the PLC 120 from the PLC 120, outputs the status information to the driver, And a command for controlling the PLC 120, and transfers the command to the PLC 120. [

The HMI 140 also receives the status information of the micropulse system 130 from the micropulse system 130 and outputs it to the driver and receives a command for controlling the micropulse system 130 from the driver, (130).

&Lt; Control method of micro-pulse system >

Hereinafter, a method of controlling the micro-pulse system according to the present invention will be described with reference to FIGS.

4 is a flowchart illustrating a method of controlling a micro-pulse system according to an exemplary embodiment of the present invention. The control method of the micropulse system shown in FIG. 4 can be performed by the control unit shown in FIG.

The control unit operates the micro-pulse system in accordance with a predetermined operation parameter value (S400). The operation parameter includes a DC voltage, a pulse voltage, and a pulse frequency, and the control unit controls the micropulse system while adjusting each operation parameter according to a predetermined upper limit value.

Next, the controller determines whether the pulse voltage is equal to or greater than the initial value (e.g., 20 KV) (S410). If the pulse voltage is equal to or greater than the initial value, the controller determines whether the wrapping signal received from the PLC is on ).

As a result of the determination in S420, if it is determined that the lapping signal is in the ON state, a pulse frequency control routine is performed to set the pulse frequency to OFF state (S430). If it is determined that the lapping signal is in the OFF state, A pulse frequency control routine is performed to stepwise increase the pulse frequency by a predetermined ratio at step S440.

Thereafter, when the pulse frequency is turned off, a DC voltage control routine for varying the DC voltage based on the DC voltage and the DC current of the dust collector is executed (S450).

Hereinafter, a method for executing the DC voltage control routine will be described in more detail with reference to FIG.

5 is a flowchart showing a method of executing the DC voltage control routine according to the present invention.

First, as shown in FIG. 5, the controller detects the first DC voltage currently applied to the dust collector (S500).

Thereafter, the controller sets the second DC voltage by increasing the first DC voltage detected in S500 by a predetermined voltage increment (VDC_SRCH) (S510).

Thereafter, the controller detects the DC current in the dust collector for a predetermined period of time (SEAR_TIME) (S520) and calculates the average value I_avg of the DC current detected during the predetermined period of time (S530).

The controller then determines whether the average value I_avg of the DC current calculated in step S530 is greater than the corona current I_CORONA multiplied by the first current weight a1 in step S540. (VDC_STBCK) multiplied by the first voltage weight b1 at the first DC voltage and a value reduced by the voltage increment (VDC_SRCH) to the dust collector if the first current weight a1 is greater than the reflected corona current 3 DC voltage is set (S550).

On the other hand, if it is determined in step S540 that the average value I_avg of the DC current is not greater than the corona current I_CORONA multiplied by the first current weight a1, the controller compares the average value I_avg of the DC current with the corona current I_CORONA (S560).

If the average value I_avg of the direct current is greater than the corona current I_CORONA as a result of the comparison of S560, the controller determines that the first DC voltage has the second voltage weight b2 multiplied by the setback voltage VDC_STBCK and the voltage increment VDC_SRCH And sets the reduced value to the third DC voltage (S570).

If it is determined in step S560 that the average value I_avg of the DC current is not greater than the corona current I_CORONA, the controller sets the third DC voltage to a value obtained by decreasing the second DC voltage by the voltage increment VDC_SRCH ).

The control method of the micro-pulse system may be implemented in a form of a program that can be executed using various computer means. The program for performing the control method of the micro-pulse system may be a hard disk, a CD-ROM, a DVD, Readable recording medium such as ROM, RAM, or flash memory.

It will be understood by those skilled in the art that the present invention may be embodied in other specific forms without departing from the spirit or essential characteristics thereof.

It is therefore to be understood that the above-described embodiments are illustrative in all aspects and not restrictive. The scope of the present invention is defined by the appended claims rather than the detailed description and all changes or modifications derived from the meaning and scope of the claims and their equivalents are to be construed as being included within the scope of the present invention do.

100: electric dust collector 110: dust collector
120: PLC 130: Micro-pulse system
140: HMI 210: DC voltage supply unit
220: Pulse voltage supply unit 230:
232: Upper limit value setting unit 234: Pulse frequency adjuster
236: Pulse voltage regulator 238: DC voltage regulator

Claims (16)

A DC voltage supply unit for supplying a DC voltage to the electric dust collector;
A pulse voltage supplier for supplying a pulse voltage according to a predetermined pulse frequency to the electric dust collector; And
And a control unit for monitoring on / off of a rapping signal applied to the electric dust collector for controlling the operation of the electric dust collector, and controlling the operation of the electric dust collector according to on / off of the wrapping signal. Pulse system. The method according to claim 1,
Wherein,
Wherein the pulse frequency control routine is executed in accordance with the on / off of the wrapping signal to vary the pulse frequency and execute the DC voltage control routine to vary the DC voltage. 3. The method of claim 2,
Wherein,
And a pulse frequency controller for executing the pulse frequency control routine,
Wherein the pulse frequency control routine varies the pulse frequency to an OFF state when the lapping signal is on and sets the pulse frequency to a predetermined ratio (RAMP_PRF) so that the pulse frequency becomes the predetermined pulse frequency upper limit value when the lapping signal is off, Wherein the micro-pulse system comprises: The method of claim 3,
Wherein the pulse frequency adjuster comprises:
Monitoring the pulse voltage, and executing the pulse frequency control routine when the pulse voltage is equal to or greater than a predetermined initial value. 3. The method of claim 2,
Wherein,
And a DC voltage regulator for executing the DC voltage control routine,
Wherein the DC voltage control routine detects a DC voltage and a DC current of the electric dust collector when the wrapping signal is turned on and varies a DC voltage to be applied to the electric dust collector based on the DC current, Pulse system. 6. The method of claim 5,
The DC voltage regulator includes:
A DC voltage detector for detecting a first DC voltage applied to the electrostatic precipitator when the wrapping signal is turned on;
An average value calculating unit for increasing the detected first DC voltage by a predetermined voltage increment (VDC_SRCH) to a second DC voltage and calculating an average value of the DC current detected by the electric dust collector for a predetermined time; And
And a voltage setting unit for varying a DC voltage to be applied to the electric dust collector according to a result of comparison between an average value of the calculated direct current and a corona current I_CORONA flowing through the electric dust collector. A dust collector including a discharge electrode and a dust collecting plate and operating according to a DC voltage applied to the discharge electrode and a pulse voltage according to a predetermined pulse frequency applied to the dust collecting plate to remove dust contained in the exhaust gas;
A PLC (Programmable Logic Controller) for controlling the operation of the dust collector and applying a lapping signal for the chatter of the dust collector to the dust collector; And
And a micro-pulse system for generating the DC voltage and the pulse voltage and applying the DC voltage and the pulse voltage to the dust collector,
The micro-
And a control unit for receiving the on / off state of the lapping signal from the PLC and controlling the operation of the dust collector according to on / off of the lapping signal. 8. The method of claim 7,
Wherein,
Wherein the pulse frequency control routine is executed in accordance with the on / off of the wrapping signal to vary the pulse frequency and execute the DC voltage control routine to vary the DC voltage. 8. The method of claim 7,
Wherein,
A pulse frequency control routine for changing the pulse frequency to an OFF state when the lapping signal is on and increasing the pulse frequency stepwise by a predetermined ratio so that the pulse frequency becomes a predetermined pulse frequency upper limit value when the lapping signal is off, Run,
Wherein the first DC voltage applied to the dust collector is increased by a predetermined voltage increment to set a second DC voltage when the pulse frequency is off and an average value of the DC current detected by the electric dust collector for a predetermined time is calculated, And a DC voltage control routine for varying a DC voltage to be applied to the electric dust collector according to a result of comparison between the average value of the calculated DC current and the corona current flowing through the electric dust collector. 10. The method of claim 9,
Wherein,
If the average value of the DC current is greater than the corona current reflecting the first current weight (the first current weight is a real number greater than 1), the first voltage weight (the first voltage weight is a real number greater than 1) And a third DC voltage to be applied to the electrostatic precipitator, wherein the average value of the DC current is not greater than the corona current reflecting the first current weight, and the average value of the DC current is greater than the corona current And sets the third DC voltage to a setback voltage reflecting the second voltage weight (the second voltage weight is a positive real number smaller than 1) and the value reduced by the voltage increment at the first DC voltage, Is smaller than the corona current, a value obtained by decreasing the second DC voltage by the voltage increment is set to the third DC voltage Wherein the electric dust collecting device is an electric dust collecting device. There is provided a control method of a micropulse system including a DC voltage supply unit for supplying a DC voltage to an electrostatic precipitator and a pulse voltage supply unit for supplying a pulse voltage according to a predetermined pulse frequency to an electrostatic precipitator,
Monitoring on / off of a lapping signal applied to the electrostatic precipitator for a chatter; And
And controlling operation of the electric dust collector according to on / off of the wrapping signal. 12. The method of claim 11,
In the controlling step,
Wherein the pulse frequency control routine is executed to vary the pulse frequency, and the DC voltage control routine is executed to vary the DC voltage. 13. The method of claim 12,
Wherein the controlling comprises:
A pulse frequency control routine for changing the pulse frequency to an OFF state when the lapping signal is on and increasing the pulse frequency stepwise by a predetermined ratio so that the pulse frequency becomes a predetermined pulse frequency upper limit value when the lapping signal is off, The method comprising the steps of: 14. The method of claim 13,
Executing a DC voltage control routine for detecting a DC voltage and a DC current of the electric dust collector when the pulse frequency is off and varying a DC voltage to be applied to the electric dust collector based on the DC current, Wherein the micro-pulse system is a micro-pulse system. 12. The method of claim 11,
Further comprising monitoring the pulse voltage prior to monitoring the on / off of the wrapping signal,
Wherein the controlling step is performed when the pulse voltage is equal to or greater than a set initial value. A computer-readable recording medium having recorded thereon a program for performing the method of controlling a micro-pulse system according to any one of claims 11 to 15.

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