WO2016039502A1 - Voltage sensing and control circuit - Google Patents
Voltage sensing and control circuit Download PDFInfo
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- WO2016039502A1 WO2016039502A1 PCT/KR2014/010045 KR2014010045W WO2016039502A1 WO 2016039502 A1 WO2016039502 A1 WO 2016039502A1 KR 2014010045 W KR2014010045 W KR 2014010045W WO 2016039502 A1 WO2016039502 A1 WO 2016039502A1
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M7/00—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output
- H02M7/42—Conversion of dc power input into ac power output without possibility of reversal
- H02M7/44—Conversion of dc power input into ac power output without possibility of reversal by static converters
- H02M7/48—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R19/00—Arrangements for measuring currents or voltages or for indicating presence or sign thereof
- G01R19/165—Indicating that current or voltage is either above or below a predetermined value or within or outside a predetermined range of values
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R19/00—Arrangements for measuring currents or voltages or for indicating presence or sign thereof
- G01R19/165—Indicating that current or voltage is either above or below a predetermined value or within or outside a predetermined range of values
- G01R19/16504—Indicating that current or voltage is either above or below a predetermined value or within or outside a predetermined range of values characterised by the components employed
- G01R19/16523—Indicating that current or voltage is either above or below a predetermined value or within or outside a predetermined range of values characterised by the components employed using diodes, e.g. Zener diodes
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- G—PHYSICS
- G04—HOROLOGY
- G04G—ELECTRONIC TIME-PIECES
- G04G19/00—Electric power supply circuits specially adapted for use in electronic time-pieces
- G04G19/08—Arrangements for preventing voltage drop due to overloading the power supply
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H7/00—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions
- H02H7/10—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for converters; for rectifiers
- H02H7/12—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for converters; for rectifiers for static converters or rectifiers
- H02H7/1216—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for converters; for rectifiers for static converters or rectifiers for AC-AC converters
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M7/00—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output
- H02M7/02—Conversion of ac power input into dc power output without possibility of reversal
- H02M7/04—Conversion of ac power input into dc power output without possibility of reversal by static converters
- H02M7/043—Conversion of ac power input into dc power output without possibility of reversal by static converters using transformers or inductors only
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M7/00—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output
- H02M7/42—Conversion of dc power input into ac power output without possibility of reversal
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- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03K—PULSE TECHNIQUE
- H03K19/00—Logic circuits, i.e. having at least two inputs acting on one output; Inverting circuits
- H03K19/02—Logic circuits, i.e. having at least two inputs acting on one output; Inverting circuits using specified components
- H03K19/12—Logic circuits, i.e. having at least two inputs acting on one output; Inverting circuits using specified components using diode rectifiers
Definitions
- the present invention relates to a voltage sensing and control circuit, and more particularly, to a circuit for controlling the output voltage of an inverter in a power supply consisting of an inverter, a transformer and a rectifier diode.
- high voltage power supplies are used for the operation of devices (loads) that require high voltage, such as test equipment such as vacuum devices such as Gyrotron or plasma generators.
- test equipment such as vacuum devices such as Gyrotron or plasma generators.
- an AC voltage output from a secondary winding voltage of a transformer of a high voltage power supply device is changed to a DC voltage using a rectifier diode, By comparing the DC voltage applied to each capacitor with the reference voltage, a control circuit for outputting a control signal for increasing the output voltage of the inverter when the magnitude of the DC voltage is lower than the reference voltage is configured.
- the highest voltage is output to the capacitor located at the top of the high voltage power supply, and the minimum voltage is output to the capacitor located at the bottom, so that the voltage sensing and control circuit is connected to the top capacitor.
- a high voltage is applied to the voltage sensing and control circuit, and there is a risk that the device is destroyed.
- the voltage sensing and control circuit in the power supply apparatus aims to prevent a high voltage from being applied to the voltage sensing and control circuit and to configure the voltage sensing and control circuit without a position limitation.
- the voltage sensing and control circuit in the power supply apparatus according to an embodiment of the present invention, an object of the pulse power supply to easily change the polarity of the pulse without the risk of voltage sensing and control circuit element destruction.
- Voltage sensing and control circuit connected to a power supply device consisting of an inverter, a transformer and a rectifying diode according to an embodiment of the present invention
- a voltage measuring unit for changing an AC voltage into a DC voltage; And an output voltage controller connected to the voltage measuring unit to compare the DC voltage applied from the voltage measuring unit with a reference voltage, and to control the output of the inverter based on the comparison result.
- the voltage measuring unit is connected to the primary winding or the secondary winding, the sensor transformer for transforming the first AC voltage into the second AC voltage; And a rectifier for changing the second AC voltage to the DC voltage.
- the voltage measuring unit may include an amplifier amplifying the DC voltage applied from the rectifier and applying the amplified voltage to the output voltage controller.
- the amplifier may be a differential amplifier for differentially amplifying the DC voltage applied from the rectifier and applying the differential voltage to the output voltage controller.
- the voltage measuring unit may further include a voltage sensing element configured to sense a DC voltage output from the rectifier.
- the sensor transformer may be an isolation transformer.
- the voltage sensing element may be composed of a resistor and a capacitor.
- the output voltage controller may output a control signal for increasing the output of the inverter when the output voltage is smaller than the reference voltage by comparing the output voltage obtained through the voltage measuring unit with the reference voltage.
- the output voltage controller may output a control signal for reducing the output of the inverter when the output voltage is greater than the reference voltage by comparing the output voltage obtained through the voltage measuring unit with the reference voltage.
- the power supply device may be a pulsed power supply device that outputs a pulse signal to a load by connecting a semiconductor switch to an output terminal circuit.
- the power supply may be a power supply including a circuit for applying a voltage with the output separated from ground.
- the voltage sensing and control circuit may include a second sensor transformer connected to a first AC voltage terminal of the transformer to convert the first AC voltage into a third AC voltage; A second rectifier for converting the transformed third AC voltage into a second DC voltage; And a comparator configured to control the output of the inverter by comparing the changed second DC voltage with a second reference voltage.
- the comparator may output a control signal to stop the inverter when a difference between the changed second DC voltage and the second reference voltage is greater than or equal to a predetermined range.
- the voltage sensing and control circuit in the power supply apparatus may prevent high voltage from being applied to the voltage sensing and control circuit, and may configure the voltage sensing and control circuit without a position limitation.
- the voltage sensing and control circuit in the power supply apparatus can easily change the polarity of the pulse without the risk of breaking the voltage sensing and control circuit elements in the pulse power supply.
- FIG. 1 is a configuration diagram showing a voltage sensing and control circuit in a conventional high voltage power supply device.
- FIG. 2 is a circuit diagram illustrating a voltage sensing and control circuit in a power supply apparatus according to an embodiment of the present invention.
- FIG. 3 is a block diagram illustrating a voltage sensing and control circuit in a power supply apparatus according to an embodiment of the present invention.
- FIG. 4 is a block diagram illustrating a voltage sensing and control circuit in a pulse power supply according to an embodiment of the present invention.
- FIG. 5 is a diagram illustrating a voltage sensing and control circuit in a heater power supply (HPS) of a vacuum equipment according to an embodiment of the present invention.
- HPS heater power supply
- the present invention can be applied to a general power supply device, in particular, a high voltage power supply device that is a high voltage power supply device, a HPS (Heater Power System) of a vacuum equipment, and the like, and relates to a circuit for controlling an inverter output of a corresponding device.
- a general power supply device in particular, a high voltage power supply device that is a high voltage power supply device, a HPS (Heater Power System) of a vacuum equipment, and the like, and relates to a circuit for controlling an inverter output of a corresponding device.
- a conventional power supply voltage sensing and control circuit has a voltage divider 50 when the output of the inverter 10 is applied to the capacitor 40 via the respective transformer 20 and the rectifier 30. obtains the voltage sensing element 60, the voltage applied to the capacitor 40 through a differential amplifier 70 and the like, or values V real amplified him to scale, and compared with the reference voltage V ref, V real this If less than V ref , a control signal for increasing the output of the inverter 10 is output.
- the voltage of the maximum value is output to the capacitor 40 located at the top of the power supply, and the voltage of the minimum value is output to the capacitor 40 located at the bottom thereof.
- a high voltage is applied to the voltage sensing and control circuit there is a risk that the device is destroyed.
- the voltage sensing and control circuit 200 may include a voltage measuring unit 300 and an output voltage control unit 400.
- the voltage measuring unit 300 obtains V real through a connection with the primary winding 21 or the secondary winding 22 of the transformer 20 in the power supply device, transfers it to the output voltage controller 400, and outputs the output voltage.
- the controller 400 compares the received V real with a reference voltage V ref and controls the inverter output according to the result.
- the voltage measuring unit 300 includes a sensor transformer 310 and a rectifier 320 connected in parallel with the primary winding 21 or the secondary winding 22 of the transformer 20.
- the voltage sensing device 60 and the differential amplifier 70 may be configured.
- the first alternating voltage of the corresponding winding side connected by the sensor transformer 310 connected in parallel with the primary winding 21 or the secondary winding 22 is transformed into a second alternating voltage in proportion to the number of turns of the sensor transformer 310.
- the second AC voltage is changed into a DC voltage through the rectifier 320.
- the high voltage applied to the primary side winding 21 or the secondary side winding 22 of the transformer 20 may be reduced through the AC voltage conversion process through the sensor transformer 310, and the DC voltage through the rectifier 320 may be reduced. By changing, we can get V real more stably and compare it with V ref .
- the DC voltage thus changed may be directly input to the output voltage controller 400 as V real, and may be changed to a value through the voltage sensing device 60, the differential amplifier 70, or the like, and input to the output voltage controller 400. May be
- the differential amplifier 70 When the differential amplifier 70 is connected, the DC voltage is amplified by the differential amplifier 70 at a predetermined ratio and then input to V real in the output voltage controller 400.
- the DC voltage is amplified by a predetermined ratio through the voltage sensing device 60 and the differential amplifier 70 and is then V to the output voltage controller 400. It is entered as real .
- the output voltage controller 400 compares V ref with a magnitude of V real based on the input V real , and outputs a control signal for increasing the output of the inverter 10 when V real is smaller than V ref .
- V real is greater than V ref
- a control signal for reducing the output of the inverter 10 is output.
- V ref may be set to a predetermined value by the user according to the configuration of the voltage sensing and control circuit 200.
- the sensor transformer 310, the rectifier 320, the voltage sensing element 60, and the differential amplifier 70 connected in parallel with the secondary winding 22 of the transformer 20 as the voltage sensing and control circuit 200.
- differential amplifier may be replaced by another type of amplifier.
- the differential amplifier has an output when one end of the secondary winding of the sensor transformer 310 is positive voltage and an output when the other end of the secondary winding of the sensor transformer is positive voltage passes through the rectifier to provide a positive terminal of the amplifier. And a V real value obtained by differentially amplifying each of the input DC voltages when respectively input to the terminals.
- the sensor transformer 310 may be composed of an isolation transformer, and the voltage sensing element 60 may be composed of a resistor and a capacitor.
- FIG. 3 is a block diagram illustrating a voltage sensing and control circuit in a power supply apparatus according to an embodiment of the present invention.
- the voltage sensing and control circuit 200 may be used in a general power supply device.
- the power supply device receives a voltage by the DC / AC inverter, and transforms it through each transformer 20.
- the alternating voltage transformed in proportion to the number of turns of the transformer 20 is changed to a direct current voltage through the rectifier 30.
- the alternating direct current voltage is applied to each capacitor 40 and applies a voltage to the load.
- the voltage sensing and control circuit 200 is connected to the primary winding 21 or the secondary winding 22 of the transformer 20, the sensor transformer 310, the rectifier 320, An output voltage controller configured to control the inverter output by comparing the voltage realization unit 300 and the reference voltage V ref obtained through the voltage measuring unit 300 and the voltage measuring unit 300 including the voltage sensing element 60 and the differential amplifier 70. 400).
- the sensor transformer 310 receives an AC voltage of the primary winding 21 or the secondary winding 22 of the connected transformer 20, which is proportional to the number of turns of the sensor transformer 310. Transform to AC voltage.
- the rectifier 320 may change the second AC voltage into a DC voltage, input the same to the differential amplifier 70 through the voltage sensing device 60, and input the V real value to the output voltage controller 400.
- the output voltage controller 400 may compare the input V real value with the set V ref value and output an inverter output control signal corresponding thereto.
- the output voltage control section 400 is based on the V real received this input, when compared to the V ref V real is less than V ref, to output a control signal for increasing the output of the inverter 10, and When V real is greater than V ref , a control signal for reducing the output of the inverter 10 may be output.
- FIG. 4 is a block diagram illustrating a voltage sensing and control circuit in a pulse power supply according to an embodiment of the present invention.
- the voltage sensing and control circuit according to the exemplary embodiment of the present invention is also used in a pulse power supply device, and a high voltage is applied to the voltage sensing and control circuit according to the related art, and thus, the device may be destroyed. This risk can solve the problem that the polarity of the pulse can not be easily changed.
- the voltage sensing and control circuit 200 in the pulsed power supply apparatus according to an embodiment of the present invention, the primary winding 21 of the transformer 20 or By using the sensor transformer 310, the rectifier 320, the voltage sensing element 60, the amplifier 330 or the differential amplifier 70 connected to the secondary winding 22, the primary winding of the transformer 20 ( 21) or V real is obtained based on the voltage applied to the secondary winding 22, and is transferred to the output voltage controller 400 so that the output voltage controller 400 compares the received V real with V ref and corresponds thereto. Inverter control signal can be output.
- the output voltage control section 400 is based on the V real received this input, when compared to the V ref V real is less than V ref, to output a control signal for increasing the output of the inverter 10, and When V real is greater than V ref , a control signal for reducing the output of the inverter 10 may be output.
- the voltage sensing and control circuit 200 may be applied to a power supply device that applies a voltage in a state in which the output is separated from the ground.
- a power supply device that applies a voltage in a state in which the output is separated from the ground.
- the apparatus may also be used in a device for a heat power supply (HPS) 120 in a general vacuum equipment.
- HPS heat power supply
- the voltage sensing and control circuit in the HPS device 120 in the distribution equipment is configured as described above with the primary winding 21 or the secondary winding 22 of the transformer 20 in the device.
- the output voltage control section 400 is based on the V real received this input, when compared to the V ref V real is less than V ref, to output a control signal for increasing the output of the inverter 10, and When V real is greater than V ref , a control signal for reducing the output of the inverter 10 may be output.
- the voltage sensing and control circuit 200 may be connected to a first AC voltage terminal of the transformer 20 in addition to the above configuration to convert the first AC voltage into a third AC voltage 410.
- the second sensor transformer 410 may be connected to the primary winding of the sensor transformer 310 to receive a first AC voltage.
- the comparator 450 may stop the operation of the inverter 10 by outputting a control signal to the inverter 10 to stop the inverter when the difference between the changed DC voltage and the reference voltage is greater than or equal to a predetermined range set by the user. .
- the winding of the transformer 20 constituting the power supply device to which the sensor transformer 310 of the voltage measuring unit 300 is connected may be one of the primary winding 21 and the secondary winding 22.
- the sensor transformer 310 of the voltage measuring unit 300 is the primary side winding 21 or the secondary side winding ( It can be connected to any of the windings 22).
- the voltage sensing and control circuit 200 is connected to the transformer located at the bottom of the power supply, but this is an embodiment of the present invention, and the voltage sensing and control circuit 200 Can also be connected to a transformer located anywhere on the top, stop, or bottom of the power supply.
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Abstract
Disclosed is a voltage sensing and control circuit connected to a power supply consisting of an inverter, a transformer, and rectification diodes, the voltage sensing and control circuit being characterized by comprising: a voltage measurement unit for transforming the first alternating voltage of a primary or secondary winding of the transformer into a second alternating voltage and then changing the second alternating voltage to a direct voltage; and an output voltage controller, which is connected to the voltage measurement unit, compares the direct voltage applied from the voltage measurement unit with a reference voltage, and controls the output of the inverter on the basis of the comparison result.
Description
본 발명은 전압센싱 및 제어 회로로서, 더욱 상세하게는 인버터, 변압기 및 정류 다이오드들로 이루어진 전원장치에서 인버터의 출력 전압을 제어하는 회로에 관한 것이다.The present invention relates to a voltage sensing and control circuit, and more particularly, to a circuit for controlling the output voltage of an inverter in a power supply consisting of an inverter, a transformer and a rectifier diode.
일반적으로 고전압 전원장치는 자이로트론(Gyrotron) 등의 배큠(vacuum) 디바이스와 같은 시험장비나 플라즈마 발생장치 등 고전압을 필요로 하는 장치(부하)의 작동을 위하여 사용된다. 이러한 고전압 전원장치의 작동 중 인버터 출력전압의 이상여부를 판단하기 위한 방법으로, 종래에는 고전압 전원장치의 변압기의 2차 권선 전압으로부터 출력되는 교류 전압을 정류 다이오드를 이용하여 직류 전압으로 변경한 후, 각각의 커패시터에 인가되는 위 직류전압을 기준전압과 비교하여, 직류전압의 크기가 기준전압에 비해 낮은 경우 인버터의 출력전압을 증가시키기 위한 제어신호를 출력하는 제어회로를 구성하였다.In general, high voltage power supplies are used for the operation of devices (loads) that require high voltage, such as test equipment such as vacuum devices such as Gyrotron or plasma generators. As a method for determining whether an inverter output voltage is abnormal during operation of the high voltage power supply device, conventionally, an AC voltage output from a secondary winding voltage of a transformer of a high voltage power supply device is changed to a DC voltage using a rectifier diode, By comparing the DC voltage applied to each capacitor with the reference voltage, a control circuit for outputting a control signal for increasing the output voltage of the inverter when the magnitude of the DC voltage is lower than the reference voltage is configured.
하지만, 이 기술에 의할 경우 고전압 전원장치에서 가장 위에 위치한 커패시터에는 최대값의 전압이 출력되고, 가장 아래 위치한 커패시터에는 최소값의 전압이 출력되므로, 만약, 전압센싱 및 제어 회로를 가장 위 커패시터에 연결하는 경우, 해당 전압센싱 및 제어 회로에 고전압이 인가되어 소자가 파괴될 위험이 있다.However, according to this technique, the highest voltage is output to the capacitor located at the top of the high voltage power supply, and the minimum voltage is output to the capacitor located at the bottom, so that the voltage sensing and control circuit is connected to the top capacitor. In this case, a high voltage is applied to the voltage sensing and control circuit, and there is a risk that the device is destroyed.
또한, 이와 같은 위험으로 인해, 펄스 전원장치에서는 펄스의 극성을 바꾸고자 할 때 해당 회로의 접지 배치와 함께 위치된 전압센싱 및 제어 회로의 위치도 같이 변경되어야 하나, 종래의 전압센싱 및 제어 회로에 의하는 경우 위와 같은 제어회로 파괴 위험으로 인해 펄스의 극성을 쉽게 바꿀 수 없다는 문제점이 있다.In addition, due to such a risk, in the pulse power supply, when the polarity of the pulse is to be changed, the position of the voltage sensing and control circuit located together with the grounding arrangement of the corresponding circuit must be changed. In this case, there is a problem in that the polarity of the pulse cannot be easily changed due to the risk of breaking the control circuit.
본 발명의 일 실시예에 따른 전원장치에서의 전압센싱 및 제어 회로는, 전압센싱 및 제어 회로에 고전압이 인가되는 것을 방지하고, 위치 제한 없이 전압센싱 및 제어 회로를 구성하는 것을 목적으로 한다.The voltage sensing and control circuit in the power supply apparatus according to an embodiment of the present invention aims to prevent a high voltage from being applied to the voltage sensing and control circuit and to configure the voltage sensing and control circuit without a position limitation.
또한, 본 발명의 일 실시예에 따른 전원장치에서의 전압센싱 및 제어 회로는, 펄스전원장치 등에서 전압센싱 및 제어 회로 소자의 파괴 위험 없이 펄스의 극성을 용이하게 변경할 수 있게 하는 것을 목적으로 한다.In addition, the voltage sensing and control circuit in the power supply apparatus according to an embodiment of the present invention, an object of the pulse power supply to easily change the polarity of the pulse without the risk of voltage sensing and control circuit element destruction.
본 발명의 일 실시예에 따른 인버터, 변압기 및 정류다이오드들로 이루어진 전원장치에 연결되는 전압센싱 및 제어 회로는Voltage sensing and control circuit connected to a power supply device consisting of an inverter, a transformer and a rectifying diode according to an embodiment of the present invention
인버터, 변압기 및 정류다이오드들로 이루어진 전원장치에 연결되는 전압센싱 및 제어 회로에 있어서, 상기 변압기의 1차측 권선 또는 2차측 권선의 제 1 교류 전압을 제 2 교류 전압으로 변압한 후, 상기 제 2 교류 전압을 직류 전압으로 변경하는 전압측정부; 및 상기 전압측정부와 연결되어 상기 전압측정부로부터 인가받은 상기 직류 전압을 기준전압과 비교하고, 상기 비교 결과에 기초하여 상기 인버터의 출력을 제어하는 출력전압제어부를 포함할 수 있다.In the voltage sensing and control circuit connected to a power supply device consisting of an inverter, a transformer and a rectifying diode, after converting the first AC voltage of the primary winding or the secondary winding of the transformer into a second AC voltage, A voltage measuring unit for changing an AC voltage into a DC voltage; And an output voltage controller connected to the voltage measuring unit to compare the DC voltage applied from the voltage measuring unit with a reference voltage, and to control the output of the inverter based on the comparison result.
상기 전압측정부는 상기 1차측 권선 또는 상기 2차측 권선과 연결되어 상기 제 1 교류 전압을 상기 제 2 교류 전압으로 변압하는 센서 변압기; 및 상기 제 2 교류 전압을 상기 직류 전압으로 변경하는 정류기를 포함할 수 있다.The voltage measuring unit is connected to the primary winding or the secondary winding, the sensor transformer for transforming the first AC voltage into the second AC voltage; And a rectifier for changing the second AC voltage to the DC voltage.
상기 전압측정부는, 상기 정류기로부터 인가되는 상기 직류 전압을 증폭하여 상기 출력전압제어부에 인가하는 증폭기를 포함할 수 있다.The voltage measuring unit may include an amplifier amplifying the DC voltage applied from the rectifier and applying the amplified voltage to the output voltage controller.
상기 증폭기는 상기 정류기로부터 인가되는 상기 직류 전압을 차등 증폭하여 상기 출력전압제어부에 인가하는 차등 증폭기일 수 있다.The amplifier may be a differential amplifier for differentially amplifying the DC voltage applied from the rectifier and applying the differential voltage to the output voltage controller.
상기 전압측정부는 상기 정류기로부터 출력되는 직류 전압을 센싱하는 전압센싱소자를 더 포함할 수 있다.The voltage measuring unit may further include a voltage sensing element configured to sense a DC voltage output from the rectifier.
상기 센서 변압기는 절연 변압기일 수 있다.The sensor transformer may be an isolation transformer.
상기 전압센싱소자는 저항 및 커패시터로 이루어질 수 있다.The voltage sensing element may be composed of a resistor and a capacitor.
상기 출력전압제어부는 상기 전압측정부를 통하여 얻은 출력전압을 상기 기준전압과 비교하여 상기 출력전압이 상기 기준전압보다 작은 경우, 상기 인버터의 출력을 증가시키기 위한 제어신호를 출력할 수 있다.The output voltage controller may output a control signal for increasing the output of the inverter when the output voltage is smaller than the reference voltage by comparing the output voltage obtained through the voltage measuring unit with the reference voltage.
상기 출력전압제어부는 상기 전압측정부를 통하여 얻은 출력전압을 상기 기준전압과 비교하여 상기 출력전압이 상기 기준전압보다 큰 경우, 상기 인버터의 출력을 감소시키기 위한 제어신호를 출력할 수 있다.The output voltage controller may output a control signal for reducing the output of the inverter when the output voltage is greater than the reference voltage by comparing the output voltage obtained through the voltage measuring unit with the reference voltage.
상기 전원장치는 출력단 회로에 반도체 스위치가 연결되어 펄스 신호를 부하로 출력하는 펄스 전원장치일 수 있다.The power supply device may be a pulsed power supply device that outputs a pulse signal to a load by connecting a semiconductor switch to an output terminal circuit.
상기 전원장치는 출력이 접지로부터 분리된 상태에서 전압을 인가하는 회로를 포함하는 전원장치일 수 있다.The power supply may be a power supply including a circuit for applying a voltage with the output separated from ground.
상기 전압센싱 및 제어 회로는 상기 변압기의 제1 교류 전압단과 연결되어 상기 제1 교류 전압을 제3 교류 전압으로 변압하는 제 2 센서 변압기; 상기 변압된 제3 교류 전압을 제2 직류 전압으로 변경하는 제2 정류기; 및 상기 변경된 제2 직류 전압을 제2 기준전압과 비교하여 상기 인버터의 출력을 제어하는 비교기를 포함할 수 있다.The voltage sensing and control circuit may include a second sensor transformer connected to a first AC voltage terminal of the transformer to convert the first AC voltage into a third AC voltage; A second rectifier for converting the transformed third AC voltage into a second DC voltage; And a comparator configured to control the output of the inverter by comparing the changed second DC voltage with a second reference voltage.
상기 비교기는 상기 변경된 제2 직류 전압과 상기 제2 기준 전압과의 차이가 일정 범위 이상인 경우 인버터를 정지시키는 제어신호를 출력할 수 있다.The comparator may output a control signal to stop the inverter when a difference between the changed second DC voltage and the second reference voltage is greater than or equal to a predetermined range.
본 발명의 일 실시예에 따른 전원장치에서의 전압센싱 및 제어 회로는, 전압센싱 및 제어 회로에 고전압이 인가되는 것을 방지하고, 위치 제한 없이 전압센싱 및 제어 회로를 구성할 수 있다.The voltage sensing and control circuit in the power supply apparatus according to the embodiment of the present invention may prevent high voltage from being applied to the voltage sensing and control circuit, and may configure the voltage sensing and control circuit without a position limitation.
또한, 본 발명의 일 실시예에 따른 전원장치에서의 전압센싱 및 제어 회로는, 펄스전원장치 등에서 전압센싱 및 제어 회로 소자의 파괴 위험 없이 펄스의 극성을 용이하게 변경할 수 있다.In addition, the voltage sensing and control circuit in the power supply apparatus according to an embodiment of the present invention can easily change the polarity of the pulse without the risk of breaking the voltage sensing and control circuit elements in the pulse power supply.
도 1은 종래의 고전압 전원장치에서의 전압센싱 및 제어 회로를 도시하는 구성도이다. 1 is a configuration diagram showing a voltage sensing and control circuit in a conventional high voltage power supply device.
도 2은 본 발명의 일 실시예에 따른 전원장치에서의 전압센싱 및 제어 회로를 나타내는 회로 구성도이다.2 is a circuit diagram illustrating a voltage sensing and control circuit in a power supply apparatus according to an embodiment of the present invention.
도 3는 본 발명의 일 실시예에 따른 전원장치에서의 전압센싱 및 제어 회로를 도시하는 구성도이다.3 is a block diagram illustrating a voltage sensing and control circuit in a power supply apparatus according to an embodiment of the present invention.
도 4는 본 발명의 일 실시예에 따른 펄스전원장치에서의 전압센싱 및 제어 회로를 도시하는 구성도이다.4 is a block diagram illustrating a voltage sensing and control circuit in a pulse power supply according to an embodiment of the present invention.
도 5는 본 발명의 일 실시예에 따른 배큠(vacuum) 장비의 HPS(Heater Power Supply)에서의 전압센싱 및 제어 회로를 도시하는 구성도이다.FIG. 5 is a diagram illustrating a voltage sensing and control circuit in a heater power supply (HPS) of a vacuum equipment according to an embodiment of the present invention.
본 발명의 이점 및 특징, 그리고 그것들을 달성하는 방법은 첨부되는 도면과 함께 상세하게 후술되어 있는 실시예들을 참조하면 명확해질 것이다. 그러나 본 발명은 이하에서 개시되는 실시예들에 한정되는 것이 아니라 서로 다른 다양한 형태로 구현될 수 있으며, 단지 본 실시예들은 본 발명의 개시가 완전하도록 하고, 본 발명이 속하는 기술분야에서 통상의 지식을 가진 자에게 발명의 범주를 완전하게 알려주기 위해 제공되는 것이며, 본 발명은 청구항의 범주에 의해 정의될 뿐이다.Advantages and features of the present invention and methods for achieving them will be apparent with reference to the embodiments described below in detail with the accompanying drawings. However, the present invention is not limited to the embodiments disclosed below, but can be implemented in various different forms, and only the embodiments make the disclosure of the present invention complete, and the general knowledge in the art to which the present invention belongs. It is provided to fully inform the person having the scope of the invention, which is defined only by the scope of the claims.
본 발명은 일반적인 전원장치, 특히 고전압 전원장치인 고전압 펄스전원장치, 배큠(vacuum) 장비의 HPS(Heater Power System) 등에 적용될 수 있는 것으로, 해당 장치의 인버터 출력을 제어하는 회로에 관한 것이다. The present invention can be applied to a general power supply device, in particular, a high voltage power supply device that is a high voltage power supply device, a HPS (Heater Power System) of a vacuum equipment, and the like, and relates to a circuit for controlling an inverter output of a corresponding device.
도 1에 도시된 바와 같이 종래의 전원장치 전압센싱 및 제어 회로는 인버터(10) 출력이 각각의 변압기(20), 정류기(30)를 거쳐 커패시터(40)에 인가될 때, 전압분배기(50), 전압센싱소자(60), 차등 증폭기(70) 등을 통하여 커패시터(40)에 인가된 전압, 또는 그를 일정비율로 증폭한 값 Vreal을 구하고, 이를 기준전압 Vref와 비교하여, Vreal이 Vref보다 작은 경우, 인버터(10)의 출력을 증가시키는 제어신호를 출력한다.As shown in FIG. 1, a conventional power supply voltage sensing and control circuit has a voltage divider 50 when the output of the inverter 10 is applied to the capacitor 40 via the respective transformer 20 and the rectifier 30. obtains the voltage sensing element 60, the voltage applied to the capacitor 40 through a differential amplifier 70 and the like, or values V real amplified him to scale, and compared with the reference voltage V ref, V real this If less than V ref , a control signal for increasing the output of the inverter 10 is output.
위와 같은 종래 기술은 전원장치에서 가장 위에 위치한 커패시터(40)에는 최대값의 전압이 출력되고, 가장 아래 위치한 커패시터(40)에는 최소값의 전압이 출력되는 특성으로 인해, 만약, 전압센싱 및 제어 회로를 가장 위 커패시터(40)에 연결하는 경우, 전압센싱 및 제어 회로에 고전압이 인가되어 소자가 파괴될 위험이 있다. In the prior art as described above, the voltage of the maximum value is output to the capacitor 40 located at the top of the power supply, and the voltage of the minimum value is output to the capacitor 40 located at the bottom thereof. When connected to the uppermost capacitor 40, a high voltage is applied to the voltage sensing and control circuit there is a risk that the device is destroyed.
또한, 이와 같은 위험으로 인해, 펄스 전원장치에서는 펄스의 극성을 바꾸고자 할 때 해당 회로의 접지 배치와 함께 위치된 전압센싱 및 제어 회로의 위치도 같이 변경되어야 하나, 종래의 전압센싱 및 제어 회로에 의하는 경우 위와 같은 제어회로 파괴 위험으로 인해 펄스의 극성을 쉽게 바꿀 수 없는 문제점이 있다.In addition, due to such a risk, in the pulse power supply, when the polarity of the pulse is to be changed, the position of the voltage sensing and control circuit located together with the grounding arrangement of the corresponding circuit must be changed. In this case, there is a problem in that the polarity of the pulse cannot be easily changed due to the risk of breaking the control circuit.
따라서 본 발명에서는 위와 같은 문제점을 해결하기 위하여 전원장치의 변압기(20)의 1차측 권선(21) 또는 2차측 권선(22)과 센서 변압기(310)를 병렬 연결하여 그 전압값을 측정하는 방법을 제시하며, 이러한 발명의 구성과 작동에 대하여는 아래에서 구체적으로 설명한다.Therefore, in the present invention, in order to solve the above problems, a method of measuring the voltage value by connecting the primary winding 21 or the secondary winding 22 of the transformer 20 of the power supply unit and the sensor transformer 310 in parallel The configuration and operation of the present invention will be described in detail below.
도 2는 본 발명의 일 실시예에 따른 전압센싱 및 제어 회로의 구성을 도시하는 블록도이다. 도 2에 도시된 바와 같이 본 발명의 일 실시예에 따른 전압센싱 및 제어 회로(200)는 전압측정부(300)와 출력전압제어부(400)로 구성될 수 있다.2 is a block diagram illustrating a configuration of a voltage sensing and control circuit according to an embodiment of the present invention. As shown in FIG. 2, the voltage sensing and control circuit 200 according to the exemplary embodiment of the present invention may include a voltage measuring unit 300 and an output voltage control unit 400.
전압측정부(300)는 전원장치 내 변압기(20) 1차측 권선(21) 또는 2차측 권선(22)과의 연결을 통해 Vreal을 구하여, 이를 출력전압제어부(400)로 전달하며, 출력전압제어부(400)는 전달받은 Vreal을 기준전압 Vref와 비교하고 그 결과에 상응하여 인버터 출력을 제어한다.The voltage measuring unit 300 obtains V real through a connection with the primary winding 21 or the secondary winding 22 of the transformer 20 in the power supply device, transfers it to the output voltage controller 400, and outputs the output voltage. The controller 400 compares the received V real with a reference voltage V ref and controls the inverter output according to the result.
구체적으로는 도 2에 도시된 바와 같이, 전압측정부(300)는 상기 변압기(20)의 1차측 권선(21) 또는 2차 권선(22)과 병렬 연결된 센서 변압기(310), 정류기(320), 전압센싱소자(60)와 차등증폭기(70)로 구성될 수 있다.Specifically, as shown in FIG. 2, the voltage measuring unit 300 includes a sensor transformer 310 and a rectifier 320 connected in parallel with the primary winding 21 or the secondary winding 22 of the transformer 20. The voltage sensing device 60 and the differential amplifier 70 may be configured.
1차측 권선(21) 또는 2차측 권선(22)과 병렬 연결된 센서 변압기(310)에 의해 연결된 해당 권선측의 제1 교류 전압은 센서 변압기(310)의 권선수에 비례하여 제2 교류 전압으로 변압되고, 상기 제2교류 전압은 정류기(320)를 통해 직류 전압으로 변경된다. The first alternating voltage of the corresponding winding side connected by the sensor transformer 310 connected in parallel with the primary winding 21 or the secondary winding 22 is transformed into a second alternating voltage in proportion to the number of turns of the sensor transformer 310. The second AC voltage is changed into a DC voltage through the rectifier 320.
이러한 센서 변압기(310)를 통한 교류 전압 변환 과정을 통해 변압기(20)의 1차측 권선(21) 또는 2차측 권선(22)에 인가된 고전압을 낮출 수 있으며, 정류기(320)를 통한 직류 전압으로의 변경을 통해 보다 안정적으로 Vreal을 얻고, 이를 Vref와 비교할 수 있다.The high voltage applied to the primary side winding 21 or the secondary side winding 22 of the transformer 20 may be reduced through the AC voltage conversion process through the sensor transformer 310, and the DC voltage through the rectifier 320 may be reduced. By changing, we can get V real more stably and compare it with V ref .
이렇게 변경된 상기 직류 전압은 그대로 출력전압제어부(400)에 Vreal로 입력될 수 있으며, 전압센싱소자(60), 차등증폭기(70) 등을 통해 그 값을 변경하여 출력전압제어부(400)에 입력될 수도 있다.The DC voltage thus changed may be directly input to the output voltage controller 400 as V real, and may be changed to a value through the voltage sensing device 60, the differential amplifier 70, or the like, and input to the output voltage controller 400. May be
차등증폭기(70)를 연결하는 경우, 상기 직류 전압은 상기 차등증폭기(70)에 의해 일정비율로 증폭된 후 출력전압제어부(400)에 Vreal로 입력된다.When the differential amplifier 70 is connected, the DC voltage is amplified by the differential amplifier 70 at a predetermined ratio and then input to V real in the output voltage controller 400.
또는, 전압센싱소자(60)와 차등증폭기(70)를 같이 연결하는 경우, 상기 직류 전압은 전압센싱소자(60)와 차등증폭기(70)를 거치며 일정비율 증폭되어 출력전압제어부(400)에 Vreal로 입력된다.Alternatively, when the voltage sensing device 60 and the differential amplifier 70 are connected together, the DC voltage is amplified by a predetermined ratio through the voltage sensing device 60 and the differential amplifier 70 and is then V to the output voltage controller 400. It is entered as real .
상기 출력전압제어부(400)는 이렇게 입력받은 Vreal을 바탕으로, Vref와 그 크기를 비교하여 Vreal이 Vref보다 작은 경우, 인버터(10)의 출력을 증가시키기 위한 제어신호를 출력하며, Vreal이 Vref보다 큰 경우에는 인버터(10)의 출력을 감소시키기 위한 제어신호를 출력한다.The output voltage controller 400 compares V ref with a magnitude of V real based on the input V real , and outputs a control signal for increasing the output of the inverter 10 when V real is smaller than V ref . When V real is greater than V ref , a control signal for reducing the output of the inverter 10 is output.
Vref는 전압센싱 및 제어 회로(200)의 구성에 따라 사용자에 의해 일정값으로 정해질 수 있다.V ref may be set to a predetermined value by the user according to the configuration of the voltage sensing and control circuit 200.
도 2에 따르면, 전압센싱 및 제어 회로(200)로써 변압기(20)의 2차 권선(22)과 병렬 연결된 센서 변압기(310), 정류기(320), 전압센싱소자(60), 차등증폭기(70) 및 출력전압제어부(400)가 구성되어져 있으나, 그 중 전압센싱소자(60), 차등증폭기(70)는 Vreal값을 정확히 구하기 위해 추가되는 부수적 구성요소에 해당한다.2, the sensor transformer 310, the rectifier 320, the voltage sensing element 60, and the differential amplifier 70 connected in parallel with the secondary winding 22 of the transformer 20 as the voltage sensing and control circuit 200. ) And the output voltage control unit 400, but the voltage sensing element 60 and the differential amplifier 70 correspond to additional components added to accurately obtain a V real value.
또한, 상기 차등증폭기는 다른 종류의 증폭기로 대체될 수 있다.In addition, the differential amplifier may be replaced by another type of amplifier.
상기 차등 증폭기는, 상기 센서 변압기(310)의 2차측 권선 일단이 양전압인 경우의 출력과 상기 센서 변압기의 2차측 권선 타단이 양전압인 경우의 출력이 상기 정류기를 통과하여 상기 증폭기의 +단자 및 -단자에 각각 입력될 때, 상기 입력된 각 직류 전압을 차등 증폭한 Vreal값을 상기 출력전압제어부에 인가하게 된다.The differential amplifier has an output when one end of the secondary winding of the sensor transformer 310 is positive voltage and an output when the other end of the secondary winding of the sensor transformer is positive voltage passes through the rectifier to provide a positive terminal of the amplifier. And a V real value obtained by differentially amplifying each of the input DC voltages when respectively input to the terminals.
상기 센서 변압기(310)는 절연 변압기로 구성될 수 있으며, 상기 전압센싱소자(60)은 저항과 커패시터로 구성될 수 있다.The sensor transformer 310 may be composed of an isolation transformer, and the voltage sensing element 60 may be composed of a resistor and a capacitor.
도 3은 본 발명의 일 실시예에 따른 전원장치에서의 전압센싱 및 제어 회로를 도시하는 구성도이다. 3 is a block diagram illustrating a voltage sensing and control circuit in a power supply apparatus according to an embodiment of the present invention.
도 3에 도시된 바와 같이, 본 발명의 일 실시예에 의한 전압센싱 및 제어 회로(200)는, 일반적인 전원장치에 이용될 수 있다. As shown in FIG. 3, the voltage sensing and control circuit 200 according to an embodiment of the present invention may be used in a general power supply device.
자세하게는, 전원장치는 DC/AC 인버터에 의하여 전압을 인가받게 되고, 이를 각각의 변압기(20)를 통하여 변압한다. 변압기(20)의 권선수에 비례하여 변압된 교류 전압은 정류기(30)를 거치며 직류 전압으로 변경되고, 이렇게 변경된 직류 전압은 각 커패시터(40)에 인가되며 부하에 전압을 가하게 된다. In detail, the power supply device receives a voltage by the DC / AC inverter, and transforms it through each transformer 20. The alternating voltage transformed in proportion to the number of turns of the transformer 20 is changed to a direct current voltage through the rectifier 30. The alternating direct current voltage is applied to each capacitor 40 and applies a voltage to the load.
이러한 전원장치에서 전압센싱 및 제어 회로(200)는 도시된 바와 같이 위 변압기(20)의 1차측 권선(21) 또는 2차측 권선(22)에 연결되는 센서 변압기(310), 정류기(320), 전압센싱소자(60)와 차등 증폭기(70)로 이루어진 전압측정부(300) 및 전압측정부(300)를 통해 구한 Vreal과 기준전압 Vref와의 비교를 통해 인버터 출력을 제어하는 출력전압제어부(400)로 이루어 질 수 있다.In this power supply, the voltage sensing and control circuit 200 is connected to the primary winding 21 or the secondary winding 22 of the transformer 20, the sensor transformer 310, the rectifier 320, An output voltage controller configured to control the inverter output by comparing the voltage realization unit 300 and the reference voltage V ref obtained through the voltage measuring unit 300 and the voltage measuring unit 300 including the voltage sensing element 60 and the differential amplifier 70. 400).
구체적으로는, 센서 변압기(310)는 연결된 변압기(20)의 1차측 권선(21) 또는 2차측 권선(22)의 교류 전압을 인가받고, 이를 센서 변압기(310)의 권선수에 비례하여 제 2 교류 전압으로 변압한다. 정류기(320)는 제 2 교류전압을 직류 전압으로 변경하고, 이를 전압센싱소자(60)를 거쳐 차등 증폭기(70)에 입력하여 출력전압제어부(400)에 Vreal값으로 입력할 수 있다.Specifically, the sensor transformer 310 receives an AC voltage of the primary winding 21 or the secondary winding 22 of the connected transformer 20, which is proportional to the number of turns of the sensor transformer 310. Transform to AC voltage. The rectifier 320 may change the second AC voltage into a DC voltage, input the same to the differential amplifier 70 through the voltage sensing device 60, and input the V real value to the output voltage controller 400.
출력전압제어부(400)는 입력받은 Vreal값과 설정된 Vref값을 비교하여 그에 맞는 인버터 출력제어신호를 출력할 수 있다.The output voltage controller 400 may compare the input V real value with the set V ref value and output an inverter output control signal corresponding thereto.
즉, 상기 출력전압제어부(400)는 이렇게 입력받은 Vreal을 바탕으로, Vref과 비교하여 Vreal이 Vref보다 작은 경우, 인버터(10)의 출력을 증가시키기 위한 제어신호를 출력할 수 있으며, Vreal이 Vref보다 큰 경우에는 인버터(10)의 출력을 감소시키기 위한 제어신호를 출력할 수 있다.That is, the output voltage control section 400 is based on the V real received this input, when compared to the V ref V real is less than V ref, to output a control signal for increasing the output of the inverter 10, and When V real is greater than V ref , a control signal for reducing the output of the inverter 10 may be output.
도 4는 본 발명의 일 실시예에 따른 펄스전원장치에서의 전압센싱 및 제어 회로를 도시하는 구성도이다.4 is a block diagram illustrating a voltage sensing and control circuit in a pulse power supply according to an embodiment of the present invention.
도 4에 도시된 바와 같이 본 발명의 일 실시예에 따른 전압센싱 및 제어회로는 펄스전원장치에도 이용하여, 종래 기술에 의할 때 전압센싱 및 제어 회로에 고전압이 인가되어 소자가 파괴될 위험, 이와 같은 위험으로 인해 펄스의 극성을 쉽게 바꿀 수 없는 문제점을 해결할 수 있다.As shown in FIG. 4, the voltage sensing and control circuit according to the exemplary embodiment of the present invention is also used in a pulse power supply device, and a high voltage is applied to the voltage sensing and control circuit according to the related art, and thus, the device may be destroyed. This risk can solve the problem that the polarity of the pulse can not be easily changed.
구체적으로는 도 4에 도시된 바와 같이, 본 발명의 일 실시예에 따른 펄스전원장치에서의 전압센싱 및 제어 회로(200)는, 위와 같은 방식으로 변압기(20)의 1차측 권선(21) 또는 2차측 권선(22)과 연결된 센서 변압기(310), 정류기(320), 전압센싱소자(60), 증폭기(330) 또는 차등증폭기(70)를 이용하여, 해당 변압기(20)의 1차측 권선(21) 또는 2차측 권선(22)에 걸린 전압을 바탕으로 Vreal을 구하고, 이를 출력전압제어부(400)에 전달함으로써 출력전압제어부(400)에서는 전달받은 Vreal을 Vref와 비교하여 그에 상응하는 인버터 제어신호를 출력할 수 있다.Specifically, as shown in Figure 4, the voltage sensing and control circuit 200 in the pulsed power supply apparatus according to an embodiment of the present invention, the primary winding 21 of the transformer 20 or By using the sensor transformer 310, the rectifier 320, the voltage sensing element 60, the amplifier 330 or the differential amplifier 70 connected to the secondary winding 22, the primary winding of the transformer 20 ( 21) or V real is obtained based on the voltage applied to the secondary winding 22, and is transferred to the output voltage controller 400 so that the output voltage controller 400 compares the received V real with V ref and corresponds thereto. Inverter control signal can be output.
즉, 상기 출력전압제어부(400)는 이렇게 입력받은 Vreal을 바탕으로, Vref과 비교하여 Vreal이 Vref보다 작은 경우, 인버터(10)의 출력을 증가시키기 위한 제어신호를 출력할 수 있으며, Vreal이 Vref보다 큰 경우에는 인버터(10)의 출력을 감소시키기 위한 제어신호를 출력할 수 있다.That is, the output voltage control section 400 is based on the V real received this input, when compared to the V ref V real is less than V ref, to output a control signal for increasing the output of the inverter 10, and When V real is greater than V ref , a control signal for reducing the output of the inverter 10 may be output.
또한, 본 발명의 일 실시예에 따른 전압센싱 및 제어 회로(200)는 출력이 접지로부터 분리된 상태에서 전압을 인가하는 전원장치에도 적용될 수 있다. 일례로 도 5에 도시된 바와 같이 일반적인 배큠(vacuum) 장비에서의 HPS(Heater Power Supply)(120)장치에도 이용될 수 있다.In addition, the voltage sensing and control circuit 200 according to an embodiment of the present invention may be applied to a power supply device that applies a voltage in a state in which the output is separated from the ground. For example, as shown in FIG. 5, the apparatus may also be used in a device for a heat power supply (HPS) 120 in a general vacuum equipment.
구체적으로는 도 5에 도시된 바와 같이 배큠 장비에서의 HPS장치(120)에서의 전압센싱 및 제어 회로는, 위와 같은 방식으로 장치 내 변압기(20) 1차측 권선(21) 또는 2차측 권선(22)과 연결된 센서 변압기(310), 정류기(320), 전압센싱소자(60), 증폭기(330) 또는 차등증폭기(70)를 이용하여, 해당 변압기(20)의 1차측 권선(21) 또는 2차측 권선(22)에 걸린 전압을 바탕으로 위와 같이 Vreal을 구하고, 이를 출력전압제어부(400)에 전달함으로써 출력전압제어부(400)에서는 전달받은 Vreal을 Vref와 비교하여 그에 상응하는 인버터 제어신호를 출력할 수 있다.Specifically, as shown in FIG. 5, the voltage sensing and control circuit in the HPS device 120 in the distribution equipment is configured as described above with the primary winding 21 or the secondary winding 22 of the transformer 20 in the device. The primary winding 21 or the secondary side of the transformer 20 using the sensor transformer 310, rectifier 320, voltage sensing device 60, amplifier 330 or differential amplifier 70 connected to the Based on the voltage applied to the winding 22, V real is obtained as described above, and transferred to the output voltage controller 400, the output voltage controller 400 compares the received V real with V ref to correspond to the inverter control signal corresponding thereto. You can output
즉, 상기 출력전압제어부(400)는 이렇게 입력받은 Vreal을 바탕으로, Vref과 비교하여 Vreal이 Vref보다 작은 경우, 인버터(10)의 출력을 증가시키기 위한 제어신호를 출력할 수 있으며, Vreal이 Vref보다 큰 경우에는 인버터(10)의 출력을 감소시키기 위한 제어신호를 출력할 수 있다.That is, the output voltage control section 400 is based on the V real received this input, when compared to the V ref V real is less than V ref, to output a control signal for increasing the output of the inverter 10, and When V real is greater than V ref , a control signal for reducing the output of the inverter 10 may be output.
또한, 상기 전압센싱 및 제어 회로(200)는 위와 같은 구성에 더하여 상기 변압기(20)의 제1 교류 전압단과 연결되어 상기 제1 교류 전압을 제3 교류전압으로 변압하는 제 2 센서 변압기(410), 상기 변압된 제3 교류 전압을 제2 직류 전압으로 변경하는 제2 정류기(420) 및 상기 변경된 제2 직류 전압을 제2 기준전압과 비교하여 상기 인버터의 출력을 제어하는 비교기(450)가 추가로 구성될 수 있다.In addition, the voltage sensing and control circuit 200 may be connected to a first AC voltage terminal of the transformer 20 in addition to the above configuration to convert the first AC voltage into a third AC voltage 410. A second rectifier 420 for changing the transformed third AC voltage to a second DC voltage and a comparator 450 for controlling the output of the inverter by comparing the changed second DC voltage with a second reference voltage; It can be configured as.
상기 제 2 센서 변압기(410)는 상기 센서변압기(310)의 1차측 권선과 연결되어 제 1 교류전압을 인가받을 수도 있다.The second sensor transformer 410 may be connected to the primary winding of the sensor transformer 310 to receive a first AC voltage.
상기 비교기(450)는 상기 변경된 직류 전압과 기준 전압과의 차이가 사용자가 설정한 일정 범위 이상인 경우 인버터를 정지시키는 제어신호를 인버터(10)에 출력하여 인버터(10)의 작동을 정지시킬 수 있다.The comparator 450 may stop the operation of the inverter 10 by outputting a control signal to the inverter 10 to stop the inverter when the difference between the changed DC voltage and the reference voltage is greater than or equal to a predetermined range set by the user. .
첨부된 도 3 내지 5에 있어서 전압측정부(300)의 센서변압기(310)가 연결된 전원장치를 구성하는 변압기(20)의 권선이 1차측 권선(21) 또는 2차측 권선(22) 중 어느 하나로 특정되어 있으나, 이는 본 발명의 일 실시예에 의한 것으로, 본 발명상 전압측정부(300)의 센서 변압기(310)는 전원장치 내 변압기(20)의 1차측 권선(21) 또는 2차측 권선(22) 중 어느 권선과도 연결될 수 있다.3 to 5, the winding of the transformer 20 constituting the power supply device to which the sensor transformer 310 of the voltage measuring unit 300 is connected may be one of the primary winding 21 and the secondary winding 22. Although it is specified, this is according to an embodiment of the present invention, in the present invention, the sensor transformer 310 of the voltage measuring unit 300 is the primary side winding 21 or the secondary side winding ( It can be connected to any of the windings 22).
또한, 첨부된 도 3 내지 5에 있어서 전압센싱 및 제어 회로(200)는 전원장치의 가장 하단에 위치한 변압기에 연결되어 구성되어있으나 이는 본 발명의 일 실시예로, 전압센싱 및 제어 회로(200)는 전원장치의 상단, 중단, 또는 하단 어디에 위치한 변압기와도 연결될 수 있다.3 to 5, the voltage sensing and control circuit 200 is connected to the transformer located at the bottom of the power supply, but this is an embodiment of the present invention, and the voltage sensing and control circuit 200 Can also be connected to a transformer located anywhere on the top, stop, or bottom of the power supply.
위와 같이 첨부된 도면을 참조하여 본 발명의 실시예를 설명하였지만, 본 발명이 속하는 기술분야에서 통상의 지식을 가진 자는 본 발명이 그 기술적 사상이나 필수적인 특징을 변경하지 않고서 다른 구체적인 형태로 실시될 수 있다는 것을 이해할 수 있을 것이다. 그러므로 이상에서 기술한 실시예들은 모든 면에서 예시적인 것이며 한정적이 아닌 것으로 이해해야만 한다.Although the embodiments of the present invention have been described with reference to the accompanying drawings as described above, those skilled in the art to which the present invention pertains may implement the present invention in other specific forms without changing its technical spirit or essential features. You will understand that. Therefore, it should be understood that the embodiments described above are exemplary in all respects and not restrictive.
Claims (13)
- 인버터, 변압기 및 정류다이오드들로 이루어진 전원장치에 연결되는 전압센싱 및 제어 회로에 있어서,In a voltage sensing and control circuit connected to a power supply consisting of an inverter, a transformer and a rectifying diode,상기 변압기의 1차측 권선 또는 2차측 권선의 제 1 교류 전압을 제 2 교류 전압으로 변압한 후, 상기 제 2 교류 전압을 직류 전압으로 변경하는 전압측정부; 및A voltage measuring unit converting the first AC voltage of the primary winding or the secondary winding of the transformer into a second AC voltage, and then changing the second AC voltage to a DC voltage; And상기 전압측정부와 연결되어 상기 전압측정부로부터 인가받은 상기 직류 전압을 기준전압과 비교하고, 상기 비교 결과에 기초하여 상기 인버터의 출력을 제어하는 출력전압제어부를 포함하는 것을 특징으로 하는 전압센싱 및 제어 회로.A voltage sensing unit connected to the voltage measuring unit and comparing the DC voltage applied from the voltage measuring unit with a reference voltage and controlling an output of the inverter based on the comparison result; Control circuit.
- 제 1항에 있어서,The method of claim 1,상기 전압측정부는The voltage measuring unit상기 1차측 권선 또는 상기 2차측 권선과 연결되어 상기 제 1 교류 전압을 상기 제 2 교류 전압으로 변압하는 센서 변압기; 및A sensor transformer connected to the primary winding or the secondary winding to transform the first AC voltage into the second AC voltage; And상기 제 2 교류 전압을 상기 직류 전압으로 변경하는 정류기를 포함하는 것을 특징으로 하는 전압센싱 및 제어 회로.And a rectifier for changing the second AC voltage to the DC voltage.
- 제 2항에 있어서,The method of claim 2,상기 전압측정부는, The voltage measuring unit,상기 정류기로부터 인가되는 상기 직류 전압을 증폭하여 상기 출력전압제어부에 인가하는 증폭기를 포함하는 것을 특징으로 하는 전압센싱 및 제어 회로.And an amplifier for amplifying the DC voltage applied from the rectifier and applying the DC voltage to the output voltage controller.
- 제 3항에 있어서,The method of claim 3, wherein상기 증폭기는The amplifier상기 정류기로부터 인가되는 상기 직류 전압을 차등 증폭하여 상기 출력전압제어부에 인가하는 차등 증폭기인 것을 특징으로 하는 전압센싱 및 제어 회로.And a differential amplifier for differentially amplifying the DC voltage applied from the rectifier and applying the differential voltage to the output voltage controller.
- 제 2항에 있어서,The method of claim 2,상기 전압측정부는 The voltage measuring unit상기 정류기로부터 출력되는 직류 전압을 센싱하는 전압센싱소자를 더 포함하는 것을 특징으로 하는 전압센싱 및 제어 회로.The voltage sensing and control circuit further comprises a voltage sensing element for sensing the DC voltage output from the rectifier.
- 제 2항에 있어서,The method of claim 2,상기 센서 변압기는 절연 변압기인 것을 특징으로 하는 전압센싱 및 제어 회로.The sensor transformer is an isolation transformer.
- 제 5항에 있어서,The method of claim 5,상기 전압센싱소자는 저항 및 커패시터로 이루어진 것을 특징으로 하는 전압센싱 및 제어 회로.The voltage sensing device is a voltage sensing and control circuit, characterized in that consisting of a resistor and a capacitor.
- 제 1항에 있어서,The method of claim 1,상기 출력전압제어부는The output voltage control unit상기 전압측정부를 통하여 얻은 출력전압을 상기 기준전압과 비교하여 상기 출력전압이 상기 기준전압보다 작은 경우, 상기 인버터의 출력을 증가시키기 위한 제어신호를 출력하는 것을 특징으로 하는 전압센싱 및 제어 회로.And a control signal for increasing the output of the inverter when the output voltage is smaller than the reference voltage by comparing the output voltage obtained through the voltage measuring unit with the reference voltage.
- 제 1항에 있어서,The method of claim 1,상기 출력전압제어부는The output voltage control unit상기 전압측정부를 통하여 얻은 출력전압을 상기 기준전압과 비교하여 상기 출력전압이 상기 기준전압보다 큰 경우, 상기 인버터의 출력을 감소시키기 위한 제어신호를 출력하는 것을 특징으로 하는 전압센싱 및 제어 회로.And a control signal for reducing the output of the inverter when the output voltage is greater than the reference voltage by comparing the output voltage obtained through the voltage measuring unit with the reference voltage.
- 제 1항에 있어서,The method of claim 1,상기 전원장치는 출력단 회로에 반도체 스위치가 연결되어 펄스 신호를 부하로 출력하는 펄스 전원장치인 것을 특징으로 하는 전압센싱 및 제어 회로.The power supply device is a voltage sensing and control circuit, characterized in that the pulsed power supply for outputting a pulse signal to the load is a semiconductor switch is connected to the output terminal circuit.
- 제 1항에 있어서,The method of claim 1,상기 전원장치는 출력이 접지로부터 분리된 상태에서 전압을 인가하는 전원장치인 것을 특징으로 하는 전압센싱 및 제어 회로.And the power supply device is a power supply device for applying a voltage when the output is separated from the ground.
- 제 11항에 있어서,The method of claim 11,상기 전압센싱 및 제어 회로는 The voltage sensing and control circuit상기 변압기의 제1 교류 전압단과 연결되어 상기 제1 교류 전압을 제3 교류 전압으로 변압하는 제 2 센서 변압기;A second sensor transformer connected to a first AC voltage terminal of the transformer to convert the first AC voltage into a third AC voltage;상기 변압된 제3 교류 전압을 제2 직류 전압으로 변경하는 제2 정류기; 및A second rectifier for converting the transformed third AC voltage into a second DC voltage; And상기 변경된 제2 직류 전압을 제2 기준전압과 비교하여 상기 인버터의 출력을 제어하는 비교기를 포함하는 것을 특징으로 하는 전압센싱 및 제어 회로. And a comparator for controlling the output of the inverter by comparing the changed second DC voltage with a second reference voltage.
- 제 12항에 있어서,The method of claim 12,상기 비교기는 상기 변경된 제2 직류 전압과 상기 제2 기준 전압과의 차이가 일정 범위 이상인 경우 인버터를 정지시키는 제어신호를 출력하는 것을 특징으로 하는 전압센싱 및 제어 회로.And the comparator outputs a control signal to stop the inverter when a difference between the changed second DC voltage and the second reference voltage is greater than or equal to a predetermined range.
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CN108016240A (en) * | 2017-12-27 | 2018-05-11 | 荆州市楚泰新能源科技有限公司 | DC-AC power supply circuits for New energy electric coach air conditioner |
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KR20220082524A (en) | 2020-12-10 | 2022-06-17 | 한국전기연구원 | Resonant converter, control system and method thereof, and a recording medium having computer readable program for executing the method |
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