KR101806282B1 - A resonant type pulse generation circuit and electrostatic precipitator using the same - Google Patents

A resonant type pulse generation circuit and electrostatic precipitator using the same Download PDF

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KR101806282B1
KR101806282B1 KR1020150113864A KR20150113864A KR101806282B1 KR 101806282 B1 KR101806282 B1 KR 101806282B1 KR 1020150113864 A KR1020150113864 A KR 1020150113864A KR 20150113864 A KR20150113864 A KR 20150113864A KR 101806282 B1 KR101806282 B1 KR 101806282B1
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South Korea
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voltage
capacitor
inductor
pulse
switching element
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KR1020150113864A
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Korean (ko)
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KR20160027905A (en
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이성희
김태원
김형균
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재단법인 포항산업과학연구원
주식회사 포스코아이씨티
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03C—MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03C3/00—Separating dispersed particles from gases or vapour, e.g. air, by electrostatic effect
    • B03C3/34—Constructional details or accessories or operation thereof
    • B03C3/66—Applications of electricity supply techniques
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S323/00—Electricity: power supply or regulation systems
    • Y10S323/903—Precipitators

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Abstract

A resonance type pulse generation circuit and an electrostatic dust precipitator using the same are provided. The resonant pulse generation circuit includes: a first DC voltage source; The initial voltage is stored in the first capacitor using resonance by the first DC voltage source and the pulse current is generated using the resonance by the voltage obtained by adding the initial voltage stored in the first capacitor to the voltage of the first DC voltage source A pulse generator for generating a pulse signal; And a pulse transformer that converts the pulse current into a pulse voltage, it is possible to generate a pulse voltage even when a DC voltage source having a relatively low magnitude is used, and it is possible to downsize and lighten the electrostatic precipitator.

Description

TECHNICAL FIELD [0001] The present invention relates to a resonance type pulse generation circuit and an electrostatic precipitator using the resonance type pulse generation circuit and an electrostatic precipitator using the resonance type pulse generation circuit.

The present invention relates to a resonance type pulse generation circuit and an electrostatic precipitator using the same.

Generally, an electrostatic precipitator generates a corona discharge in a discharge electrode to which a negative high voltage is applied. When the electric field is formed after the dust is charged, the dust charged in the dust collecting plate, which is a cylindrical or plate- Is a dust collecting device that removes dust particles and is widely used in industrial plants to collect dust contained in exhaust gases.

The electric dust collector includes a DC (electrostatic precipitator) and a pulsed electrostatic precipitator. In the case of a DC (direct current) type, a high energy cost is consumed in spite of a low dust collection efficiency, and a dust having a high specific resistance There is a problem that smooth dust removal can not be performed due to the phenomenon of reverse rotation during processing.

On the other hand, since the pulsed electrostatic precipitator uses a low DC voltage for dust collection and a high-voltage pulse of a short period for charging, the energy cost is low and a high dust collection efficiency can be expected. In addition, it can have excellent dust removal performance without reverse rotation phenomenon against dust with high specific resistance.

Accordingly, researches on various pulse generators and pulsed electrostatic precipitators using the pulse generators have been continuing in domestic and foreign dust collector related companies. For example, in US6362604, an electrostatic precipitator capable of DC supply and pulse supply by one DC power source is disclosed .

US Patent No. 6,362,604 ('ELECTROSTATIC PRECIPITATOR SLOW PULSE GENERATING UNIT', Registered on March 26, 2002)

The present invention provides a resonance-type pulse generation circuit capable of generating a pulse voltage even when a direct-current voltage source having a relatively low size is used and capable of downsizing and lightening the electrostatic precipitator and an electrostatic precipitator using the same.

Further, the present application provides a resonance type pulse generation circuit which can easily generate fluctuation periods of pulses and generate a pulse voltage to be provided to the electrostatic precipitator with a simple structure, and which can be easily maintained, and an electrostatic precipitator using the same .

The present application also relates to a method for preventing a pulse width from increasing by supplying a high voltage pulse to an electrostatic precipitator having a capacitive load characteristic by rapidly discharging an initial voltage charged in a capacitor of a pulse generating circuit after a pulse voltage is generated A resonance type pulse generation circuit capable of preventing an increase in power consumption and an electrostatic dust precipitator using the same.

The present application also provides a resonance type pulse generation circuit that can be connected to a conventional DC electrostatic precipitator in parallel and an electrostatic precipitator using the same for upgrading a conventional DC electrostatic precipitator to a pulsed electrostatic precipitator.

A resonance type pulse generation circuit according to an embodiment of the present invention includes a first DC voltage source, an initial voltage storage circuit for storing an initial voltage in a first capacitor using resonance by the first DC voltage source, A pulse generator for generating a pulse current by resonance based on a voltage obtained by adding an initial voltage stored in the first capacitor to a voltage; And a pulse transformer for converting the pulse current into a pulse voltage.

In one embodiment, the pulse generating unit includes a first switching device, one end of which is connected to the (+) terminal of the first DC voltage source, a first inductor whose one end is connected to the other end of the first switching device, A first capacitor connected to the other end of the first inductor, and a second switching device connected to one end of the first inductor and the other end of the first capacitor.

In another embodiment, the pulse generating unit may include a first switching element having one end connected to the (+) terminal of the first DC voltage source, a first inductor having one end connected to the other end of the first switching element, A second switching element connected to the other end of the first inductor, and a first capacitor connected to one end of the first inductor and the other end of the second switching element.

In another embodiment, the pulse generating unit may include: a first switching device, one end of which is connected to the (+) terminal of the first DC voltage source; a first inductor whose one end is connected to the other end of the first switching device; A first capacitor connected to the other end of the first inductor, a second inductor whose one end is connected to the other end of the first switching device, and one end connected to the other end of the second inductor, And a second switching element connected to the terminal.

In another embodiment, the pulse generating unit may include: a first switching device having one end connected to the (+) terminal of the first DC voltage source; a diode connected in parallel with the first switching device; A first capacitor having one end connected to the other end of the first inductor and having a first end connected to the other end of the first switching device and a second end connected to the other end of the first capacitor, 2 switching elements.

In another embodiment, the pulse generating section includes a first switching element, one end of which is connected to the (+) terminal of the first DC voltage source, a diode connected in parallel with the first switching element, A second switching element having one end connected to the other end of the first inductor and a second switching element having one end connected to the other end of the first switching element and the other end connected to the other end of the second switching element And may include a first capacitor.

In another embodiment, the pulse generating unit may include: a first switching device having one end connected to the (+) terminal of the first DC voltage source; a diode connected in parallel with the first switching device; A first inductor having one end connected to the other end of the first inductor, a second inductor having one end connected to the other end of the first switching device, and a second inductor having one end connected to the other end of the second inductor And the other end of the first capacitor is connected to the other end of the first capacitor.

In one embodiment, the pulse generator may store the initial voltage in the first capacitor using the resonance between the inductor and the first capacitor by the DC voltage source by turning on the first switching device, Wherein the initial voltage is stored in the first capacitor, the first switching device is turned off, the second switching device is turned on, and the resonance between the inductor and the first capacitor is used to generate an initial voltage And the first switching element is turned on to turn on the initial voltage whose polarity is reversed, which is stored in the first capacitor, by turning on the second switching element, and when the polarity of the initial voltage is inverted, 1 < / RTI > DC voltage source.

An electrostatic precipitator according to an embodiment of the present invention includes: a first DC voltage source; A pulse generator for generating a pulse current using resonance by the first DC voltage source; A pulse transformer for converting the pulse current generated by the pulse generator into a pulse voltage; A second DC voltage source connected in series with the pulse transformer to add a second DC voltage to the pulse voltage converted by the pulse transformer; And a dust collecting unit for collecting dust by applying a pulse voltage generated by the pulse transformer and a second DC voltage generated by the second DC voltage source, The initial voltage is stored in the first capacitor and the pulse current is generated using the resonance based on the voltage obtained by adding the initial voltage stored in the first capacitor to the voltage of the first DC voltage source.

An electrostatic precipitator according to another embodiment of the present invention includes a first DC voltage source; A pulse generator for generating a pulse current using resonance by the first DC voltage source; A pulse transformer for converting the pulse current generated by the pulse generator into a pulse voltage; A second DC voltage source connected in parallel with the pulse transformer; And a dust collecting unit for collecting dust by applying a pulse voltage generated by the pulse transformer and a second DC voltage generated by the second DC voltage source, The initial voltage is stored in the first capacitor and the pulse current is generated using the resonance based on the voltage obtained by adding the initial voltage stored in the first capacitor to the voltage of the first DC voltage source.

In one embodiment, the dust collecting unit may include a discharge electrode for charging dust by generating a discharge by applying a negative voltage, and a dust collecting plate for collecting the charged dust by receiving a positive voltage.

According to the embodiment of the present invention, pulse voltage can be generated even when a DC voltage source having a relatively low size is used, and the electrostatic precipitator can be made smaller and lighter.

In addition, according to another embodiment of the present invention, it is possible to easily generate the pulse voltage to be provided to the electrostatic precipitator with a simple structure, and to easily maintain maintenance, while easily changing the generation period of the pulse.

According to another embodiment of the present invention, in supplying a high voltage pulse to the electrostatic precipitator having capacitive load characteristics, by rapidly discharging the initial voltage charged in the capacitor of the pulse generating circuit after the pulse voltage is generated, So that it is possible to prevent an increase in power consumption.

According to another embodiment of the present invention, the conventional DC electrostatic precipitator can be upgraded to the pulse type dust collector by connecting the resonance type pulse generating circuit in parallel to the conventional DC electrostatic precipitator, thereby improving the dust collecting performance, .

1A to 1C are block diagrams of a resonance type pulse generation circuit according to an embodiment of the present invention.
2A to 2G are diagrams for explaining the operation principle of the resonance type pulse generation circuit of FIG. 1A according to one embodiment of the present invention.
3 is a main part waveform diagram of the resonance type pulse generation circuit of FIG. 1A according to an embodiment of the present invention.
4A to 4C are views showing an electrostatic precipitator to which the resonant pulse generating circuit of FIGS. 1A to 1C according to an embodiment of the present invention is applied.
5A to 5C are block diagrams of a resonance type pulse generation circuit according to another embodiment of the present invention.
6A to 6G are diagrams for explaining the operation principle of the resonance type pulse generation circuit of FIG. 5A according to one embodiment of the present invention.
7 is a main part waveform diagram of the resonance type pulse generation circuit of FIG. 5A according to the embodiment of the present invention.
8A to 8C are views showing an electrostatic precipitator to which the resonant pulse generating circuit of FIGS. 5A to 5C is applied according to one embodiment of the present invention.
9A to 9C are views showing an electrostatic precipitator to which the resonant pulse generating circuit of FIGS. 5A to 5C is applied according to another embodiment of the present invention.

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

However, the embodiments of the present invention can be modified into various other forms, and the scope of the present invention is not limited to the embodiments described below. Further, the embodiments of the present invention are provided to more fully explain the present invention to those skilled in the art.

In the drawings referred to in the present invention, elements having substantially the same configuration and function will be denoted by the same reference numerals, and the shapes and sizes of the elements and the like in the drawings may be exaggerated for clarity.

1A to 1C are block diagrams of a resonance type pulse generation circuit according to an embodiment of the present invention.

First, various embodiments of a resonance type pulse generation circuit according to an embodiment of the present invention will be described in detail with reference to Figs. 1A to 1C.

1A to 1C, a resonant pulse generating circuit 110 according to an embodiment of the present invention includes a first DC voltage source 111, a pulse generating unit 112, and a pulse transformer 113 .

The first DC voltage source 111 is a voltage source that provides a DC voltage, and its size may be a value between approximately 1 kV and 4 kV.

The pulse generator 112 stores the initial voltage in the capacitor C1 using the resonance by the first DC voltage source 111 and outputs the initial voltage stored in the capacitor C1 to the first DC voltage source 111. [ It is possible to generate a pulse current by using resonance based on the voltage obtained by adding the voltage

Specifically, the pulse generating unit 112 may include an inductor, a capacitor, and two switching elements.

1A, the pulse generating unit 112 includes a first inductor L11, a capacitor C11 connected in series to the first inductor L11, a first inductor L11, A first switching device T11 connected between the positive terminal of the first direct current voltage source 111 and the positive terminal of the first direct current voltage source 111 and a first inductor L11 connected in series and a second switching device connected in parallel with the first capacitor C11 T21).

Although not shown, the first switching device T11 includes an output terminal of a first inductor L11 and a first capacitor C11 connected in series (that is, a second switching device T21, a first inductor L11, (Meaning between the configuration including the capacitor C11 and the pulse transformer 113). The first inductor L11 is connected to the pulse transformer 113 and the first switching element T11 is connected to the first inductor L11 through a capacitor C11 and a first DC voltage source 111, (+) Terminal of the transistor.

In one embodiment, the first switching element T11 has one end connected to the (+) terminal of the first DC voltage source 11 and the other end connected to one end of the first inductor L11 and the second switching element T21 Lt; / RTI > The first inductor L11 may have one end connected to the other end of the first switching device T11 and the other end connected to the first capacitor C11. The first capacitor C11 may have one end connected to the other end of the first inductor L11 and the other end connected to the other end of the second switching device T21.

In one embodiment, the pulse generating unit 112 turns on the first switching device T11 and uses the resonance between the first inductor L11 and the first capacitor C11 by the first DC voltage source 111 So that the initial voltage can be stored in the first capacitor C11.

Here, the initial voltage may be greater than the magnitude of the DC voltage provided by the first DC voltage source 111. Specifically, when the first switching device T11 is turned on, the first capacitor C11 is turned on when the voltage charged by the first DC voltage source 111 is higher than the DC voltage supplied by the first DC voltage source 111 It can be charged until it is the same size.

At this time, the current passing through the first inductor L11 rises until the voltage charged by the first DC voltage source 111 becomes equal to the magnitude of the DC voltage supplied by the first DC voltage source 111 And the first inductor L11 can be charged by the current.

When the voltage charged by the first DC voltage source 111 becomes equal to the magnitude of the DC voltage provided by the first DC voltage source 111, the first capacitor C11 is charged to the charged first inductor L11, (I.e., until the current passing through the inductor L11 becomes zero) until the energy stored in the first inductor L11 by the capacitor C1 is zero. That is, the initial voltage stored in the first capacitor C11 may be the sum of the voltage charged by the first DC voltage source 111 and the voltage charged by the first inductor L11.

When the initial voltage is stored in the first capacitor C11, the pulse generating unit 112 turns off the first switching device T11 and turns on the second switching device T21 to turn on the first inductor L11 ) And the first capacitor C11 to reverse the polarity of the initial voltage stored in the first capacitor C11.

When the polarity of the initial voltage is inverted, the pulse generating unit 112 turns off the second switching device T21 and turns on the first switching device T11 so that the polarity stored in the first capacitor C11 And the inverted initial voltage can be added to the voltage supplied by the first DC voltage source 111. [ The pulse generating unit 112 can provide the pulse current to the pulse transformer 113 by performing the above-described operation.

However, adding the initial voltage whose polarity is inverted here to the voltage supplied by the first DC voltage source 111 can be performed at the time of operation after the initial operation of the pulse generator 112.

In other words, since the pulse generator 112 does not have an initial voltage stored in the first capacitor C11 in the initial operation, the pulse generator 112 generates a pulse current based on the voltage supplied by the first DC voltage source 111 to the pulse transformer 113, And an initial voltage whose polarity is inverted by the above-described operation of the pulse generator 112 is stored in the first capacitor C11 at the time of operation after the initial operation, so that it is supplied to the first DC voltage source 111 To the pulse transformer 113. In this case,

1B, the pulse generating unit 112 includes a first inductor L12, a second switching device T22 connected in series with the first inductor L12, A capacitor C12 connected in parallel with the first inductor L12 and the second switching device T22 connected in series, a first inductor L12 and a second switching device T22 connected in series and a first direct current voltage source 111 And a first switching element T12 connected between the positive (+) terminals.

Although not shown, the first switching element T12 is connected between the output terminals of the first inductor L12 and the second switching element T22 connected in series (i.e., the first capacitor C12, the first inductor L12, Which means between the configuration including the element T22 and the pulse transformer 113). The first inductor L12 is arranged to be connected to the pulse transformer 113. The first switching device T12 includes a second switching device T22 connected in series with the first inductor L12, (+) Terminal of the transistor 111.

In one embodiment, the first switching device T1 has one end connected to the (+) terminal of the first direct current voltage source 111 and the other end connected to one end of the first capacitor C1 and the first inductor L1 Can be connected. The first inductor L1 may have one end connected to the other end of the first switching device T1 and the other end connected to one end of the second switching device T2. The second switching element T2 may have one end connected to the other end of the first inductor L1 and the other end connected to the other end of the first capacitor C1. The first capacitor C1 may be connected to the other end of the first switching device T1 and the other end of the second switching device T2.

In one embodiment, the pulse generating section 112 turns on the first switching device T12 to generate resonance between the leakage inductance of the first capacitor C12 and the pulse transformer 113 by the DC voltage source 111 The initial voltage can be stored in the first capacitor C12.

When the initial voltage is stored in the first capacitor C12, the pulse generating unit 112 turns off the first switching device T12 and turns on the second switching device T22 to turn on the first inductor L12 ) And the first capacitor C12 to reverse the polarity of the initial voltage stored in the first capacitor C12.

When the polarity of the initial voltage is inverted, the pulse generator 112 turns off the second switching device T22 and turns on the first switching device T12 to turn on the polarity of the first capacitor C12 stored in the first capacitor C12 And the inverted initial voltage can be added to the voltage supplied by the first DC voltage source 111. [ The pulse generating unit 112 can provide the pulse current to the pulse transformer 113 by performing the above-described operation.

1C, the pulse generating unit 112 includes a first inductor L13, a capacitor C13 connected in series with the first inductor L13, a second inductor L13, (+) Terminal of the first DC voltage source 111 and the second switching element T23 connected in series with the inductor L23, the second inductor L23, the first inductor L13 and the capacitor C13 connected in series, A configuration including the first inductor L1, the second inductor L2, the capacitor C1, and the second switching device T2 and the output terminal of the first inductor L13 and the capacitor C13 connected in series, And a first switching element Tl connected between the first and second switching elements (which means between the pulse transformer 113).

In one embodiment, the first switching device T1 has one end connected to the (+) terminal of the first DC voltage source 111 and the other end connected to one end of the first inductor L1 and the second inductor L2, Can be connected. The first inductor L1 may have one end connected to the other end of the first switching device T1 and connected to one end of the first capacitor C1. The first capacitor C1 may have one end connected to the other end of the first inductor L1 and the other end connected to the other end of the second switching device T2. The second inductor L2 may have one end connected to the other end of the first switching device T1 and the other end connected to one end of the second switching device T2. The second switching element T2 may have one end connected to the second inductor L2 and the other end connected to the other end of the first capacitor C1.

In one embodiment, the pulse generating section 112 turns on the first switching device T1 to generate a pulse signal by using the resonance between the first inductor L1 and the first capacitor C1 by the DC voltage source 111 The initial voltage can be stored in the first capacitor C1 and when the initial voltage is stored in the first capacitor C1 the first switching device T1 is turned off and the second switching device T2 is turned on The polarity of the initial voltage stored in the first capacitor C1 can be inverted by using the resonance between the first inductor L1 and the second inductor L2 and the first capacitor C1, The second switching device T2 is turned off and the first switching device T1 is turned on to supply the initial voltage having the inverted polarity stored in the first capacitor C1 supplied by the first DC voltage source 111 And the pulse current can be supplied to the pulse transformer 113. The pulse transformer 113 generates a pulse current corresponding to the voltage of the pulse transformer 113,

Finally, the pulse transformer 113 can convert the pulse current generated by the pulse generator 112 into a pulse voltage and output it. The pulse voltage output from the pulse transformer 113 is added to the high voltage of a second DC power source (see reference numeral 121 in Figs. 4A to 4C) to be described later, and is supplied to a dust collecting portion (refer to reference numeral 130 in Figs. 4A to 4C) As shown in FIG.

The switching elements T1 and T2 may be formed of a thin film transistor such as a thyristor, an insulated gate bipolar transistor (IGBT), a field-effect transistor (FET), and a bipolar junction transistor And a semiconductor switch including a BJT.

2A to 2G are diagrams for explaining the operation principle of the resonance type pulse generation circuit of FIG. 1A according to one embodiment of the present invention, and FIG. 3 is a diagram for explaining the resonance type pulse generation circuit of FIG. 1A according to an embodiment of the present invention. And Fig.

Hereinafter, with reference to FIGS. 2A to 3, the operation principle will be described in detail, focusing on the resonance type pulse generation circuit shown in FIG. 1A. The activated devices in FIGS. 2A to 2G are denoted by thick lines, the inactivated devices are denoted by dotted lines, and the reference numerals of FIG. 3 are denoted based on the circuit of FIG. 1A.

2A is an initial operation and is a timing at which the first thyristor element T11 is turned on by the gate current igT1 of the first thyristor element T1. At this time, a current closing path via the first DC voltage source 111, the first inductor L11, the first capacitor C11, and the pulse transformer 113 is formed. In Fig. Here, the first inductor L11 is a value including the leakage inductance of the pulse transformer 113. On the other hand, in the case of the circuit of FIG. 1B, the current closure path via the first DC voltage source 111, the first capacitor C12, and the pulse transformer 113 is changed in such a manner that only the leakage inductance of the pulse transformer 113 is used And in the case of the circuit of FIG. 1C, a current closing path via the first DC voltage source 111, the first inductor L13, the first capacitor C13, and the pulse transformer 113 may be formed.

2B is a section where resonance is performed by the first DC voltage source 111. The current iL1 gradually rises due to the inductance of the first inductor L11 and the leakage inductance of the pulse transformer 113, The voltage vC1 of the capacitor C11 starts to be charged gradually in the absence of the charging voltage. In Fig. The current iL1 flowing through the pulse transformer 113 stops when the charging voltage of the first capacitor C11 is higher than the voltage of the first DC voltage source 111 and the current starts to decrease and the current starts to decrease, A current can flow until it is turned on. When the current iL1 becomes 0, the first thyristor element T11 can be automatically turned off. 1B, resonance is performed by the leakage inductance of the first capacitor C12 and the pulse transformer 113 using the leakage inductance of the pulse transformer 113. In the circuit of FIG. 1C, the inductance L13 ), The leakage inductance of the pulse transformer 113, and the first capacitor C13.

2C shows a state in which the first thyristor element T11 is off (OFF state), the current iL1 of the entire circuit is 0, and the voltage vC1 charged in the first capacitor C11 can be maintained. In Fig. 3, it is a section ③.

2D shows a state in which the second thyristor element T21 is turned on by the gate current igT2 of the second thyristor element T2 and the first capacitor C11, the first inductor L11 and the second thyristor element T21 are turned on, May be formed. The voltage vC1 charged in the first capacitor C11 starts discharging through the first inductor L11. In Fig. 1B, a closed path is formed through the first capacitor C12, the first inductor L12, and the second thyristor T22. In the circuit of FIG. 1C, the first capacitor C13- The inductor L13, the second inductor L23, and the second thyristor element T23 may be formed.

FIG. 2E is a section during which the voltage vC1 charged in the first capacitor C11 discharges through the first inductor L11 until the charging voltage vC1 of the first capacitor C11 becomes zero The current iL1 of the first inductor L11 rises to form a maximum current and gradually decreases and the first capacitor C11 can be charged in the opposite direction by the current charged in the first inductor L11 . In Fig. When the resonance current of the first inductor L11 is exhausted, the charging of the first capacitor C11 is stopped and the second thyristor element T21 is automatically turned off. 1B, the voltage vC1 charged in the first capacitor C12 is discharged via the first inductor L12, and in the case of the circuit of Fig. 1C, the voltage vC1 charged in the first capacitor C13 is discharged, May be discharged through the first inductor L13 and the second inductor L23.

2F is a state in which the second thyristor T2 is off (off state), the current of the entire circuit is 0, and the voltage charged in the reverse direction to the first capacitor C11 is maintained. FIG. 3 shows a section 6.

2G is a timing at which the first thyristor element T11 is turned on again by the gate current igT1 of the first thyristor element T11 and the first thyristor element T11 is turned on by the first direct current voltage source 111, 1 capacitor C11 - the current pulsation path passing through the pulse transformer 113 is formed. At this time, the voltage becomes a voltage obtained by adding the initial voltage stored in the first capacitor C11 to the first DC voltage source 111. [ In Fig. Since the voltage of the first capacitor C11 starts at a voltage higher than that of FIG. 2A in which the voltage of the first capacitor C11 is 0, the rising speed of the current iL1 is increased and the voltage applied to the pulse transformer 113 and the current flowing therethrough are also increased . Thereafter, the process of FIGS. 2B to 2F (see 2, 3, 4, 5, 6 in FIG. 3) is repeated, and the charging maximum voltage of the capacitor C11 in the resonance tanks L11, L21 increases as the process repeats, . The voltage supplied to the primary of the pulse transformer 113 becomes nearly three times the voltage of the first DC voltage source 111 in a stabilized state.

4A through 4C illustrate an electrostatic precipitator to which the resonant pulse generating circuit of FIGS. 1A through 1C is applied, according to an embodiment of the present invention. FIG. 4A is a cross- FIG. 4B illustrates an electrostatic precipitator to which the resonant pulse generating circuit of FIG. 1B is applied, according to an embodiment of the present invention, FIG. 4C illustrates an electrostatic precipitator employing the resonant pulse generating circuit of FIG. 1C is an electrostatic precipitator to which the resonance type pulse generating circuit according to the embodiment is applied.

4A to 4C, the electrostatic precipitator may further include a second DC voltage supply unit 120 and a dust collecting unit 130 in addition to the resonance type pulse generation circuit 110.

More specifically, the second DC voltage providing unit 120 includes a second DC voltage source 121 for providing a DC voltage and LC filters 122 and 123, and is connected in series with the pulse transformer 113, Is configured to add the second DC voltage to the pulse voltage (Vo) converted by the second DC voltage (113). The size may be a value between approximately 50 kV and 70 kV and may be a larger value than the first DC voltage source 111 having a value between 1 kV and 4 kV. Reference numeral 122 denotes an inductor, 123 denotes a capacitor, and the inductor 122 and the capacitor 123 may be an LC filter for smoothing the voltage by the second DC voltage source 121.

Meanwhile, the dust collecting unit 130 may include a discharge electrode 131 for charging dust by generating a discharge by applying a negative voltage, and a dust collecting plate 132 for collecting dust charged with a positive voltage have.

Hereinafter, the operation principle of the above-described electrostatic precipitator will be described in detail.

The resonant pulse generation circuit 110 generates a pulse current using the resonance by the first DC voltage source 111 as described above with reference to Figs. 1A to 3, and the pulse transformer 113 generates resonance Type pulse generating circuit 110 into the pulse voltage Vo.

Alternatively, the second direct current voltage source 121 provides a second direct current voltage that is greater than the magnitude of the voltage of the first direct current voltage source 111, and the second direct current voltage supplied is converted by the pulse transformer 113 And can be added to the pulse voltage Vo.

The negative voltage is supplied to the discharge electrode 131 of the dust collecting unit 130 and the positive voltage is supplied to the dust collecting plate 132 of the dust collecting unit 130. The discharge electrode 131 receives a negative voltage to generate a discharge, And the dust charged by the discharge of the discharge electrode 131 can be collected.

As described above, according to the embodiment of the present invention, by generating the pulse voltage using the resonance based on the voltage obtained by adding the initial voltage stored in the capacitor to the DC voltage source and employing the pulse transformer, It is possible to generate a pulse voltage even when a DC voltage source having a built-in excitation voltage is used, and it is possible to reduce the size and weight of the electrostatic precipitator.

In addition, according to another embodiment of the present invention, stable pulse voltage is generated through the inductance of the inductor, in particular, the leakage inductance of the pulse transformer, the capacitor, and the full resonance using only two switches, It is possible to generate the pulse voltage to be provided to the electrostatic precipitator, and maintenance is easy.

5A to 5C are block diagrams of a resonance type pulse generation circuit according to another embodiment of the present invention.

5A to 5C, the basic configuration is the same as the embodiment of FIGS. 1A to 1C, but further includes a diode D1 connected in parallel to the first switching device T1, In supplying the high voltage pulse to the electrostatic precipitator, the initial voltage charged in the first capacitor C1 is rapidly discharged after the pulse voltage Vo is generated, thereby preventing the pulse width from increasing, thereby preventing an increase in the power consumption , It is possible to improve the dust collecting performance when connected to the dust collector.

5A through 5C, the resonant pulse generating circuit 210 according to an embodiment of the present invention includes a first DC voltage source 211, a pulse generating unit 212, and a pulse transformer 213 .

The first DC voltage source 211 is a voltage source that provides a DC voltage, and the size thereof may be a value between approximately 1 kV and 4 kV.

The pulse generating section 212 stores the initial voltage in the capacitor C1 using the resonance by the first DC voltage source 211 and outputs the initial voltage stored in the capacitor C1 to the first DC voltage source 211. [ It is possible to generate a pulse current by using resonance based on the voltage obtained by adding the voltage

More specifically, the pulse generating unit 212 may include inductors L1 and L2, a capacitor C1, two switching elements T1 and T2, and a diode D1.

5A, the pulse generating unit 212 includes a first inductor L11, a capacitor C11 connected in series with the first inductor L11, a first inductor L11, The output terminal of the first inductor L11 and the first capacitor C1 connected in series or in series between the inductor L11 and the capacitor C11 and the (+) terminal of the first DC voltage source 211 A first switching device T11 and a first switching device T11 which are connected to the pulse transformer 113 and the configuration including the first inductor L11 and the first capacitor C11, And a second switching element T21 connected in parallel with the first capacitor C11 and the first inductor L1 connected in series and the diode D1 connected in parallel.

In one embodiment, the first switching element T11 has one end connected to the (+) terminal of the first DC voltage source 211 and the other end connected to one end of the first inductor L11 and the second switching element T21 Lt; / RTI > The first inductor L11 may have one end connected to the other end of the first switching device T11 and the other end connected to the first capacitor C11. The first capacitor C11 may have one end connected to the other end of the first inductor L11 and the other end connected to the other end of the second switching device T21. In addition, the diode D11 may be connected in parallel with the first switching element T11. Here, the cathode of the diode D11 is connected to one end of the first switching device T11 and the (+) terminal of the first DC voltage source 211, and the anode is connected to the first switching device T11 ). ≪ / RTI >

In one embodiment, the pulse generator 212 turns on the first switching device T11 to turn on the first switching device T11 by using the resonance between the first inductor L11 and the first capacitor C11 by the DC voltage source 211 1 < / RTI > capacitor C11.

Here, the initial voltage may be greater than the magnitude of the DC voltage provided by the first DC voltage source 211. Specifically, when the first switching device T11 is turned on, the first capacitor C11 is turned on when the voltage charged by the first DC voltage source 211 is higher than the DC voltage supplied by the first DC voltage source 111 It can be charged until it is the same size.

At this time, the current passing through the first inductor L11 rises until the voltage charged by the first DC voltage source 211 becomes equal to the magnitude of the DC voltage supplied by the first DC voltage source 111 And the first inductor L11 can be charged by the current.

When the voltage charged by the first DC voltage source 211 becomes equal to the magnitude of the DC voltage supplied by the first DC voltage source 211, the first capacitor C11 is charged by the charged first inductor L11, (I.e., until the current passing through the inductor L11 becomes zero) until the energy stored in the first inductor L11 by the capacitor C1 is zero. That is, the initial voltage stored in the first capacitor C11 may be the sum of the voltage charged by the first DC voltage source 211 and the voltage charged by the first inductor L11.

The pulse generating unit 212 generates the pulse voltage V1 by applying the initial voltage to the first inductor L11 until the initial voltage reaches the maximum voltage (the voltage charged by the first DC voltage source 211 and the energy stored in the first inductor L11 become zero) L11), the first switching device T11 is turned off to discharge the initial voltage stored in the first capacitor C11 through the diode D11.

Next, the pulse generating unit 212 turns off the first switching device T11 and turns on the second switching device T21 to use resonance between the first inductor L11 and the first capacitor C11 So that the polarity of the initial voltage stored in the first capacitor C11 can be inverted.

Next, when the polarity of the initial voltage is inverted, the pulse generator 212 turns off the second switching device T21, turns on the first switching device T11, and turns on the polarity of the first capacitor C11 And the inverted initial voltage can be added to the voltage supplied by the first DC voltage source 211. [ The pulse generating section 212 can provide the pulse current to the pulse transformer 213 by performing the above-described operation.

However, adding the initial voltage whose polarity is inverted here to the voltage supplied by the first DC voltage source 211 can be performed at the time of operation after the initial operation of the pulse generator 212.

In other words, since the pulse generator 212 does not have an initial voltage stored in the first capacitor C11 during the initial operation, the pulse generator 212 generates a pulse current based on the voltage supplied by the first DC voltage source 211 to the pulse transformer 213, And an initial voltage whose polarity is inverted by the above-described operation of the pulse generator 212 is stored in the first capacitor C11 during operation after the initial operation, so that it is supplied to the first DC voltage source 211 To the pulse transformer 213. In this case,

5B, the pulse generator 212 includes a first inductor L12, a second switching element T22 connected in series with the first inductor L12, and a second inductor L12 connected in series with the first inductor L12. A capacitor C12 connected in parallel with the first inductor L12 and the second switching device T22 connected in series, a first inductor L12 and a second switching device T22 connected in series and a first direct current voltage source The first switching element T22, the first inductor L12 and the capacitor C12 are connected in series between the (+) terminals of the first switching element T21 and the (+) terminals of the first switching element T21 or the first inductor L12 and the second switching element T22 connected in series. And the first switching element T12 connected between the pulse transformer 213 and the configuration including the first switching element T12.

One end of the first switching device T12 is connected to the (+) terminal of the first DC voltage source 211 and the other end of the first switching device T12 is connected to one end of the first capacitor C12 and the first inductor L12 Can be connected. The first inductor L12 may have one end connected to the other end of the first switching device T12 and the other end connected to one end of the second switching device T22. The second switching element T22 may have one end connected to the other end of the first inductor L12 and the other end connected to the other end of the first capacitor C12. The first capacitor C12 may be connected to the other terminal of the first switching element T12 and the other terminal of the second switching element T22. In addition, the diode D12 may be connected in parallel with the first switching device T12. Here, the cathode of the diode D12 is connected to one terminal of the first switching device T12 and the (+) terminal of the first DC voltage source 211, and the anode is connected to the first switching device T12 ). ≪ / RTI >

In one embodiment, the pulse generator 212 turns on the first switching element T12 to generate resonance between the first capacitor C12 by the DC voltage source 211 and the leakage inductance of the pulse transformer 213 The initial voltage can be stored in the first capacitor C12.

When the initial voltage becomes the maximum voltage (the sum of the voltage charged by the first DC voltage source 211 and the voltage charged by the leakage inductance), the pulse generator 212 generates a pulse T12 may be turned off to discharge the initial voltage stored in the first capacitor C12 through the diode D12.

Next, the pulse generating unit 212 turns off the first switching device T12 and turns on the second switching device T22 to use the resonance between the first inductor L12 and the first capacitor C12 So that the polarity of the initial voltage stored in the first capacitor C12 can be inverted.

Next, when the polarity of the initial voltage is inverted, the pulse generator 212 turns off the second switching device T22 and turns on the first switching device T12 to turn on the polarity of the first capacitor C12 And the inverted initial voltage can be added to the voltage supplied by the first DC voltage source 211. [ The pulse generating section 212 can provide the pulse current to the pulse transformer 213 by performing the above-described operation.

However, adding the initial voltage whose polarity is inverted here to the voltage supplied by the first DC voltage source 211 can be performed at the time of operation after the initial operation of the pulse generator 212.

In other words, since the pulse generator 212 does not have an initial voltage stored in the first capacitor C12 during the initial operation, the pulse generator 213 generates a pulse current based on the voltage supplied by the first DC voltage source 211, The initial voltage of which the polarity is inverted by the above operation of the pulse generator 212 is stored in the first capacitor C12 during operation after the initial operation so that it is supplied to the first DC voltage source 212 To the pulse transformer 213. In this case,

5C, the pulse generating unit 112 includes a first inductor L13, a capacitor C13 connected in series to the first inductor L13, A second inductor L23 connected in series with the second inductor L23 and a second inductor L23 connected in series with the first inductor L13 and the capacitor C13 connected in series with the first inductor L23, The first inductor L13, the second inductor L23, the capacitor C13, and the second switching element T23, which are connected in series, or between the first inductor L13 and the capacitor C13 connected in series, And a first switching element T13 connected between the power source and the pulse transformer 213).

In one embodiment, the first switching device T13 has one end connected to the (+) terminal of the first DC voltage source 211 and the other end connected to one end of the first inductor L13 and the second inductor L23, Can be connected. The first inductor L13 has one end connected to the other end of the first switching device T13 and connected to one end of the first capacitor C13. The first capacitor C13 may have one end connected to the other end of the first inductor L13 and the other end connected to the other end of the second switching device T23. The second inductor L23 may have one end connected to the other end of the first switching device T13 and the other end connected to one end of the second switching device T23. The second switching element T23 may have one end connected to the second inductor L23 and the other end connected to the other end of the first capacitor C13. In addition, the diode D13 may be connected in parallel with the first switching element T13. Here, the cathode of the diode D13 is connected to one end of the first switching device T13 and the positive terminal of the first DC voltage source 211, and the anode is connected to the first switching device T13 ). ≪ / RTI >

In one embodiment, the pulse generator 212 turns on the first switching element T13 and uses resonance between the first inductor L13 and the first capacitor C13 by the first DC voltage source 211 So that the initial voltage can be stored in the first capacitor C13.

The pulse generator 212 may turn off the first switching element T13 and discharge the initial voltage stored in the first capacitor C13 through the diode D13 when the initial voltage reaches the maximum voltage have.

Next, the pulse generator 212 turns off the first switching device T13 and turns on the second switching device T23 to turn on the first inductor L13 and the second inductor L23 and the first capacitor The polarity of the initial voltage stored in the first capacitor C13 can be inverted by using the resonance between the first capacitor C13 and the first capacitor C13.

Next, when the polarity of the initial voltage is inverted, the pulse generating unit 212 turns off the second switching device T23, turns on the first switching device T13, and turns on the polarity of the first capacitor C13 stored in the first capacitor C13. And the inverted initial voltage can be added to the voltage supplied by the first DC voltage source 211. [

However, adding the initial voltage whose polarity is inverted here to the voltage supplied by the first DC voltage source 211 can be performed at the time of operation after the initial operation of the pulse generator 212.

Finally, the pulse transformer 213 can convert the pulse current generated by the pulse generator 212 into a pulse voltage and output it. The pulse voltage output from the pulse transformer 213 is added to the high voltage of a second DC power source (see reference numeral 221 in Figs. 8A to 9C) to be described later, and is supplied to a dust collecting portion (refer to reference numeral 230 in Figs. 8A to 9C) As shown in FIG.

The rest of the configuration is the same as that of the above-described basic embodiment, and the other explanation will be omitted.

6A to 6G are diagrams for explaining the operation principle of the resonance type pulse generation circuit of FIG. 5A according to the embodiment of the present invention, and FIG. 7 is a diagram for explaining the resonance type pulse generation circuit of FIG. 5A according to the embodiment of the present invention, And Fig.

Hereinafter, with reference to FIG. 6A to FIG. 7, the operation principle will be described in detail, focusing on the resonance type pulse generation circuit shown in FIG. 5A. The activated devices in FIGS. 6A to 6G are denoted by thick lines, the inactivated devices are denoted by dotted lines, and the reference numerals of FIG. 7 are denoted based on the circuit of FIG. 5A.

Fig. 5A is an initial operation, and is a time point when the first thyristor element T11 is turned on by the gate current igT1 of the first thyristor element T11. At this time, a current closing path through the first DC voltage source 211 - the first inductor L11 - the first capacitor C11 - the pulse transformer 213 is formed. In Fig. Here, the first inductor L11 is a value including the leakage inductance of the pulse transformer 213. [ In the case of the circuit of FIG. 5B, on the other hand, a current closure path via the first DC voltage source 211 - the first capacitor C11 - the pulse transformer 213 is used in such a manner that only the leakage inductance of the pulse transformer 213 is used In the case of the circuit of FIG. 5C, a current pulsation path may be formed via the first DC voltage source 211 - the first inductor L11 - the first capacitor C11 - the pulse transformer 213.

6B is a section where resonance is performed by the first DC voltage source 211. The current iL1 gradually rises due to the inductance of the first inductor L11 and the leakage inductance of the pulse transformer 213, The voltage vC1 of the capacitor C11 starts to be charged gradually in the absence of the charging voltage. In Fig. The current iL1 flowing through the pulse transformer 213 stops when the charging voltage of the first capacitor C11 is higher than the voltage of the first DC voltage source 211 and the current starts to decrease and the current starts to decrease, A current can flow until it is turned on. When the current iL1 becomes 0, the first thyristor element T11 can be automatically turned off. At this time, the voltage of the first capacitor C11 may be charged to the highest voltage state with the polarity indicated, and the highest voltage may be applied to the load capacitance. 5B, the leakage inductance of the first transformer 213 and the first capacitor C12 is used to resonate by the leakage inductance of the pulse transformer 213. In the case of the circuit of FIG. 5C, The inductance of the second inductor L13 and the second inductor L23, the leakage inductance of the pulse transformer 213, and the first capacitor C31.

6C shows a state in which the first thyristor element T11 is off (OFF state), and the voltage charged in the first capacitor C11 and the voltage charged in the load capacitance can be discharged through the diode D11. The discharge may be continued until the sum of the voltage of the first inductor L11, the voltage of the capacitor C11, and the primary voltage of the pulse transformer 213 becomes smaller than the voltage of the first DC voltage source 211. [ As a result, the voltage of the first capacitor C11 becomes lower than the voltage of the first DC voltage source 211, and the voltage of the load capacitance becomes almost zero. 7 is a section ③.

6D shows a state in which the second thyristor element T21 is turned on by the gate current igT2 of the second thyristor element T21 and the first capacitor C11 to the first inductor L11 to the second thyristor element T21, May be formed. The voltage vC1 charged in the first capacitor C11 starts discharging through the first inductor L11. In Fig. 5B, a closed path is formed through the first capacitor C11, the first inductor L11, and the second thyristor T21. In the circuit of FIG. 5C, the first capacitor C11- The inductor L11, the second inductor L21, and the second thyristor element T21 may be formed.

6E shows a state after the voltage vC1 charged in the first capacitor C11 is discharged to 0 and the first capacitor C11 is charged in the opposite direction by the current charged in the first inductor L11 . 7 is a section ⑤. When the resonance current of the first inductor L11 is exhausted, the charging of the first capacitor C11 is stopped and the second thyristor element T21 is automatically turned off. 5c, the inductance of the second inductor L21 connected to one end of the second thyristor T21 is larger than the inductance of the first inductor L11 because the inductance of the first inductor L11 is larger than the inductance of the second inductor L21. And the currents of the two inductors are the same.

6F shows a state in which the first thyristor element T11 is off (off state), the current of the entire circuit is 0, and the voltage charged in the reverse direction to the first capacitor C11 is maintained. Fig. 7 shows a section ⑥.

6G is a timing at which the first thyristor element T11 is turned on again by the gate current igT1 of the first thyristor element T11 and the first thyristor element T11 is turned on by the first direct current voltage source 211- 1 capacitor C11-pulse transformer 213 is formed. At this time, the voltage becomes the voltage obtained by adding the initial voltage stored in the first capacitor C11 to the first DC voltage source 211. [ 7 in Fig. Since the voltage of the first capacitor C11 starts at a voltage higher than that of FIG. 6A where the voltage of the first capacitor C11 is 0, the rising speed of the current iL1 is increased, and the voltage applied to the pulse transformer 213 and the current flowing therethrough are also increased . 6B to 6F (see (2), (3), (5) and (6) in FIG. 7) are repeated. As the process is repeated, the charging maximum voltage of the first capacitor C11 in the resonance tanks L11 and L21 becomes high and stabilized at an appropriate level . The voltage supplied to the primary of the pulse transformer 213 is nearly three times the voltage of the first DC voltage source 211 in the stabilized state.

8A to 8C are views showing an electrostatic precipitator to which the resonant pulse generating circuit of FIGS. 5A to 5C is applied, according to an embodiment of the present invention. FIG. 8A is a cross- FIG. 8B illustrates an electrostatic precipitator to which the resonant pulse generating circuit of FIG. 5B is applied, according to an embodiment of the present invention, and FIG. 8C illustrates an electrostatic precipitator employing the resonant pulse generating circuit of FIG. Fig. 5 shows an electrostatic precipitator to which the resonant pulse generating circuit of Fig. 5C according to the embodiment is applied.

8A to 8C, the electrostatic precipitator may further include a second DC voltage supply unit 220 and a dust collecting unit 230 in addition to the resonance type pulse generation circuit 210.

The second DC voltage supplier 220 may include a second DC voltage source 221 and LC filters 222 and 223 for providing a DC voltage and may be connected in series with the pulse transformer 213, And to add the second DC voltage to the pulse voltage Vo converted by the transformer 213. [ The size may be a value between approximately 50 kV and 70 kV and may be a larger value than a first DC voltage source 211 having a value between 1 kV and 4 kV. Reference numeral 222 denotes an inductor, reference numeral 223 denotes a capacitor, and the inductor 122 and the capacitor 123 may be an LC filter for smoothing the voltage by the second DC voltage source 121.

Meanwhile, the dust collecting unit 230 may include a discharge electrode 231 for charging dust by generating a discharge by applying a negative voltage, and a dust collecting plate 232 for collecting dust charged with a positive voltage have.

Hereinafter, the operation principle of the above-described electrostatic precipitator will be described in detail.

Resonant pulse generation circuit 210 generates a pulse current using resonance by first DC voltage source 211 as described above with reference to Figures 5A to 7 and pulse transformer 213 generates resonance Type pulse generating circuit 210 to the pulse voltage Vo.

Meanwhile, the second direct-current voltage source 221 provides a second direct-current voltage that is larger than the magnitude of the voltage of the first direct-current voltage source 211, and the provided second direct-current voltage is converted by the pulse transformer 213 And can be added to the pulse voltage Vo.

The positive voltage is supplied to the discharge electrode 231 of the dust collecting unit 230 and the positive voltage is supplied to the dust collecting plate 232 of the dust collecting unit 230. The discharge electrode 231 receives a negative voltage to generate a discharge, And the dust charged by the discharge of the discharge electrode 231 can be collected.

9A to 9C are views showing an electrostatic precipitator to which the resonant pulse generating circuit of FIGS. 5A to 5C is applied according to another embodiment of the present invention.

9A through 9C are diagrams illustrating an electrostatic precipitator to which the resonant pulse generating circuit of FIGS. 5A through 5C is applied, according to an embodiment of the present invention. FIG. 9A is a cross- FIG. 9B illustrates an electrostatic precipitator to which the resonant pulse generating circuit of FIG. 5B is applied, according to an embodiment of the present invention, and FIG. 9C illustrates an electrostatic precipitator employing the resonant pulse generating circuit of FIG. Fig. 5 shows an electrostatic precipitator to which the resonant pulse generating circuit of Fig. 5C according to the embodiment is applied.

9A to 9C, the basic configuration is different from the embodiment of FIGS. 8A to 8C in that the second DC voltage supplier 220 and the resonant pulse generating circuit 210 are connected in parallel, and the pulse transformer 213 And the second capacitor C2 is connected in series to one end of the second coil of the second capacitor C2.

This is for upgrading the conventional DC electrostatic precipitator (composed of the second DC voltage supplier 220 and the dust collector 230) to the pulsed electrostatic precipitator, and the resonant pulse generating circuit 210 of FIGS. 5A to 5C, A second capacitor C2 is connected in series to one end of the pulse transformer 213 of the second DC voltage supplier 220 and then connected in parallel to the output terminal of the second DC voltage supplier 220 to improve the dust collecting performance of the conventional DC electrostatic precipitator And the power consumption can be lowered.

In this way, when the resonance type pulse generation circuit 210 for generating a pulse voltage and the second DC voltage supply unit 220 are connected in parallel, the voltages of the two power supplies are operated to be the same, and the second DC voltage supply unit The inductor L3 may be connected to the output terminal of the second direct current power supplying unit 220 and the output terminal of the resonant type pulse generating circuit 210 may be connected to the output terminal of the second direct current power supplying unit 220, The second capacitor C2 may be connected to the second capacitor C2.

In this case, the DC voltage is applied to the chamber of the dust collector 230 while the DC voltage is maintained by the second DC voltage supplier 220, and at the same time, the second capacitor C2 connected to the pulse transformer 213 A direct current voltage of the same magnitude as the direct current voltage can be charged. At this time, the charging voltage of the second capacitor C2 may have the opposite polarity of the pulse output. When a pulse is generated in the resonance type pulse generation circuit 210 at the time when the pulse is required, the charge voltage of the opposite polarity charged in the second capacitor C2 is damped, and the voltage of the chamber of the dust collector 230 can be raised .

Here, the inductor L3 of the second direct current voltage supplier 220 can play the role of excluding the influence of the pulse voltage of the resonant type pulse generating circuit 210 while maintaining the output current.

The pulse voltage provided from the resonant pulse generation circuit 210 may raise the voltage of the chamber of the dust collector 230 and the raised voltage may fill the equivalent capacity of the chamber of the dust collector 230. Here, the voltage of the second capacitor C2 may be equal to the voltage of the chamber of the dust collector 230, and the output of the second DC voltage supplier 220 may be maintained by the inductor L3. In addition, the power charged in the chamber of the dust collector 230 and the second capacitor C3 is recovered to the voltage of the second DC voltage supplier 220 while being discharged again, Lt; / RTI >

The other structures are the same as those of the embodiments shown in Figs. 8A to 8C, so that the remaining description will be omitted.

The present invention is not limited to the above-described embodiments and the accompanying drawings. It will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims. It will be self-evident.

110, 210: resonance type pulse generation circuit
111, 211: a first direct current voltage source
112, and 212:
113, 213: Pulse transformer
120, 220: Second DC voltage supply unit
121, 221: a second DC voltage source
122, 222: inductor
123, 223: capacitors
130, and 230:
131, 231:
132, 232: collecting plate

Claims (22)

A first DC voltage source;
A resonance by the first DC voltage source is used to store an initial voltage in the first capacitor, and a resonance by a voltage obtained by adding the initial voltage stored in the first capacitor to the voltage of the first DC voltage source A pulse generator for generating a current; And
And a pulse transformer for converting the pulse current into a pulse voltage.
The apparatus of claim 1, wherein the pulse generator comprises:
A first switching element, one end of which is connected to the (+) terminal of the first DC voltage source;
A first inductor whose one end is connected to the other end of the first switching element;
The first capacitor having one end connected to the other end of the first inductor; And
And a second switching element connected to one end of the first inductor and the other end of the first capacitor.
The apparatus of claim 2, wherein the pulse generator comprises:
Turning on the first switching element to store an initial voltage in the first capacitor using the resonance between the first inductor and the first capacitor by the DC voltage source,
Wherein when the initial voltage is stored in the first capacitor, the first switching device is turned off, the second switching device is turned on, and the resonance between the first inductor and the first capacitor is applied to the first capacitor Inverts the polarity of the stored initial voltage,
When the polarity of the initial voltage is inverted, turning off the second switching element, turning on the first switching element, and supplying an initial voltage whose polarity is inverted stored in the first capacitor by the first DC voltage source And a resonance type pulse generation circuit for adding the voltage to the voltage.
The apparatus of claim 1, wherein the pulse generator comprises:
A first switching node, one end of which is connected to the (+) terminal of the first DC voltage source;
A first inductor whose one end is connected to the other end of the first switching element;
A second switching element having one end connected to the other end of the first inductor; And
And the first capacitor is connected to one end of the first inductor and the other end of the second switching element.
The apparatus of claim 4, wherein the pulse generator comprises:
Turning on the first switching element to store an initial voltage in the first capacitor using resonance between the first capacitor and the leakage inductance of the pulse transformer by the DC voltage source,
Wherein when the initial voltage is stored in the first capacitor, the first switching device is turned off, the second switching device is turned on, and the resonance between the first inductor and the first capacitor is applied to the first capacitor Inverts the polarity of the stored initial voltage,
When the polarity of the initial voltage is inverted, turning off the second switching element, turning on the first switching element, and supplying an initial voltage whose polarity is inverted stored in the first capacitor by the first DC voltage source And a resonance type pulse generation circuit for adding the voltage to the voltage.
The apparatus of claim 1, wherein the pulse generator comprises:
A first switching element, one end of which is connected to the (+) terminal of the first DC voltage source;
A first inductor whose one end is connected to the other end of the first switching element;
The first capacitor having one end connected to the other end of the first inductor;
A second inductor whose one end is connected to the other end of the first switching element; And
And a second switching element having one end connected to the other end of the second inductor and the other end connected to the other end of the first capacitor.
The apparatus of claim 6, wherein the pulse generator comprises:
Turning on the first switching element to store an initial voltage in the first capacitor using the resonance between the first inductor and the first capacitor by the DC voltage source,
Wherein when the initial voltage is stored in the first capacitor, the first switching device is turned off, the second switching device is turned on, and the resonance between the first inductor and the second inductor and the first capacitor Inverting the polarity of the initial voltage stored in the first capacitor,
When the polarity of the initial voltage is inverted, turning off the second switching element, turning on the first switching element, and supplying an initial voltage whose polarity is inverted stored in the first capacitor by the first DC voltage source And a resonance type pulse generation circuit for adding the voltage to the voltage.
The apparatus of claim 1, wherein the pulse generator comprises:
A first switching element, one end of which is connected to the (+) terminal of the first DC voltage source;
A diode connected in parallel to the first switching device;
A first inductor whose one end is connected to the other end of the first switching element;
The first capacitor having one end connected to the other end of the first inductor; And
And a second switching element having one end connected to the other end of the first switching element and the other end connected to the other end of the first capacitor.
The apparatus of claim 8, wherein the pulse generator comprises:
Turning on the first switching element to store an initial voltage in the first capacitor using resonance between the inductor and the first capacitor by the DC voltage source,
When the initial voltage becomes the maximum voltage, the first switching device is turned off to discharge an initial voltage stored in the first capacitor through the diode, and the second switching device is turned on to turn on the inductor and the first capacitor Inverting the polarity of the initial voltage stored in the first capacitor,
When the polarity of the initial voltage is inverted, turning off the second switching element, turning on the first switching element, and supplying an initial voltage whose polarity is inverted stored in the first capacitor by the first DC voltage source And a resonance type pulse generation circuit for adding the voltage to the voltage.
The apparatus of claim 1, wherein the pulse generator comprises:
A first switching element, one end of which is connected to the (+) terminal of the first DC voltage source;
A diode connected in parallel to the first switching device;
A first inductor whose one end is connected to the other end of the first switching element;
A second switching element having one end connected to the other end of the first inductor; And
And the first capacitor having one end connected to the other end of the first switching element and the other end connected to the other end of the second switching element.
The apparatus of claim 10,
Turning on the first switching element to store an initial voltage in the first capacitor using resonance between the first capacitor and the leakage inductance of the pulse transformer by the DC voltage source,
When the initial voltage becomes the maximum voltage, the first switching device is turned off to discharge an initial voltage stored in the first capacitor through the diode, and the second switching device is turned on to turn on the inductor and the first capacitor Inverting the polarity of the initial voltage stored in the first capacitor,
When the polarity of the initial voltage is inverted, turning off the second switching element, turning on the first switching element, and supplying an initial voltage whose polarity is inverted stored in the first capacitor by the first DC voltage source And a resonance type pulse generation circuit for adding the voltage to the voltage.
The apparatus of claim 1, wherein the pulse generator comprises:
A first switching element, one end of which is connected to the (+) terminal of the first DC voltage source;
A diode connected in parallel to the first switching device;
A first inductor whose one end is connected to the other end of the first switching element;
The first capacitor having one end connected to the other end of the first inductor;
A second inductor whose one end is connected to the other end of the first switching element; And
A second switching element having one end connected to the other end of the second inductor and the other end connected to the other end of the first capacitor;
The resonant pulse generating circuit comprising:
13. The apparatus of claim 12, wherein the pulse generator comprises:
Turning on the first switching element to store an initial voltage in the first capacitor using resonance between the inductor and the first capacitor by the DC voltage source,
When the initial voltage becomes the maximum voltage, the first switching device is turned off to discharge an initial voltage stored in the first capacitor through the diode, and the second switching device is turned on to turn on the inductor and the first capacitor Inverting the polarity of the initial voltage stored in the first capacitor,
When the polarity of the initial voltage is inverted, turning off the second switching element, turning on the first switching element, and supplying an initial voltage whose polarity is inverted stored in the first capacitor by the first DC voltage source And a resonance type pulse generation circuit for adding the voltage to the voltage.
A first DC voltage source;
A pulse generator for generating a pulse current using resonance by the first DC voltage source;
A pulse transformer for converting the pulse current generated by the pulse generator into a pulse voltage;
A second DC voltage source connected in series with the pulse transformer to add a second DC voltage to the pulse voltage converted by the pulse transformer; And
And a dust collecting part for collecting dust by applying a pulse voltage generated by the pulse transformer and a second DC voltage generated by the second DC voltage source,
Wherein the pulse generator is configured to store the initial voltage in the first capacitor using the resonance by the first DC voltage source and to generate the pulse by adding a voltage obtained by adding the initial voltage stored in the first capacitor to the voltage of the first DC voltage source An electrostatic precipitator that generates a pulse current using resonance.
delete 15. The apparatus of claim 14,
A first inductor whose one end is connected to the (+) terminal of the first DC voltage source;
The first capacitor having one end connected to the other end of the first inductor;
A first switching element connected between one end of the first inductor and the (+) terminal of the first DC voltage source; And
And a second switching element connected to one end of the first inductor and the other end of the first capacitor.
A first DC voltage source;
A pulse generator for generating a pulse current using resonance by the first DC voltage source;
A pulse transformer for converting the pulse current generated by the pulse generator into a pulse voltage;
A second DC voltage source connected in parallel with the pulse transformer; And
And a dust collecting part for collecting dust by applying a pulse voltage generated by the pulse transformer and a second DC voltage generated by the second DC voltage source,
Wherein the pulse generator is configured to store the initial voltage in the first capacitor using the resonance by the first DC voltage source and to generate the pulse by adding a voltage obtained by adding the initial voltage stored in the first capacitor to the voltage of the first DC voltage source An electrostatic precipitator that generates a pulse current using resonance.
delete 18. The pulse transformer of claim 17,
A first coil connected to the resonant pulse generation circuit;
A second coil coupled to the first coil; And
A second capacitor connected to one end of the second coil;
.
18. The apparatus of claim 17, wherein the pulse generator comprises:
A first switching element, one end of which is connected to the (+) terminal of the first DC voltage source;
A diode connected in parallel to the first switching device;
A first inductor whose one end is connected to the other end of the first switching element;
The first capacitor having one end connected to the other end of the first inductor; And
And a second switching element having one end connected to the other end of the first switching element and the other end connected to the other end of the first capacitor.
18. The apparatus of claim 17, wherein the pulse generator comprises:
A first switching element, one end of which is connected to the (+) terminal of the first DC voltage source;
A diode connected in parallel to the first switching device;
A first inductor whose one end is connected to the other end of the first switching element;
A second switching element having one end connected to the other end of the first inductor; And
And the first capacitor has one end connected to the other end of the first switching device and the other end connected to the other end of the second switching device.
18. The apparatus of claim 17, wherein the pulse generator comprises:
A first switching element, one end of which is connected to the (+) terminal of the first DC voltage source;
A diode connected in parallel to the first switching device;
A first inductor whose one end is connected to the other end of the first switching element;
The first capacitor having one end connected to the other end of the first inductor;
A second inductor whose one end is connected to the other end of the first switching element; And
And a second switching element having one end connected to the other end of the second inductor and the other end connected to the other end of the first capacitor.
KR1020150113864A 2014-08-29 2015-08-12 A resonant type pulse generation circuit and electrostatic precipitator using the same KR101806282B1 (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20190129310A (en) * 2018-05-10 2019-11-20 재단법인 포항산업과학연구원 A high voltage pulse generation circuit using power switch and electrostatic precipitator including the same

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US6362604B1 (en) 1998-09-28 2002-03-26 Alpha-Omega Power Technologies, L.L.C. Electrostatic precipitator slow pulse generating circuit

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20190129310A (en) * 2018-05-10 2019-11-20 재단법인 포항산업과학연구원 A high voltage pulse generation circuit using power switch and electrostatic precipitator including the same
KR102515338B1 (en) * 2018-05-10 2023-03-29 재단법인 포항산업과학연구원 A high voltage pulse generation circuit using power switch and electrostatic precipitator including the same

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