KR960019928A - Power converter - Google Patents

Power converter Download PDF

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Publication number
KR960019928A
KR960019928A KR1019940031354A KR19940031354A KR960019928A KR 960019928 A KR960019928 A KR 960019928A KR 1019940031354 A KR1019940031354 A KR 1019940031354A KR 19940031354 A KR19940031354 A KR 19940031354A KR 960019928 A KR960019928 A KR 960019928A
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KR
South Korea
Prior art keywords
power
level
circuit
output
overload
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Application number
KR1019940031354A
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Korean (ko)
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KR0123006B1 (en
Inventor
송종원
김정대
송종수
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송종원
김정대
송종수
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Priority to KR1019940031354A priority Critical patent/KR0123006B1/en
Publication of KR960019928A publication Critical patent/KR960019928A/en
Application granted granted Critical
Publication of KR0123006B1 publication Critical patent/KR0123006B1/en

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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
    • 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
    • H02M1/00—Details of apparatus for conversion
    • H02M1/0003—Details of control, feedback or regulation circuits
    • H02M1/0009—Devices or circuits for detecting current in a converter

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Inverter Devices (AREA)
  • Emergency Protection Circuit Devices (AREA)

Abstract

본 발명은 직류전원을 교류전원으로 변환하는 전력변환장치에 관한 것으로써 특히 전원측의 트러블과 부하측의 이상상태를 검지하여 전력변환장치와 부하를 동시에 보호할 수 있도록 이루어진 전력변환장치에 관한 것인 바 입력전원측에 전원레벨을 감지하여 과전압시 모든회로에 공급되는 전원을 차단하고 이 차단상태를 보지할 수 있도록 하고, AC출력단에 변류기(CT)를 형성하여 부하측의 과부하상태를 감지하고, 과부하상태에서는 모든회로에 공급되는 전원을 차단, 보지할 수 있도록 하며, 상기 변류기를 통하여 부하측 단락시 즉각적으로 모든 회로에 공급되는 전원을 차단하고 이 상태를 보지할 수 있도록 된 전력제어장치를 제공하는 동시에 상기 변류기를 통하여 부하측의 출력상태를 레벨드라이브시켜 현재 부하측 사용전력을 용이하게 확인할 수 있도록 된 전력변환장치를 제공하고자 전력변환장치의 전원입력측에 전원레벨을 검출하는 전원감지수단을 형성하고 이 전원감지수단을 경유하여 후단의 모든 회로에 전원을 공급되게 스위칭 하도록 하며 전원입력측에 트러블 발생시 공급되던 전원을 차단하고 이 차단상태를 보지하도록 하며, AC출력단에 출력상태를 검출하는 변류기와 이 변류기에 과부하 차단레벨에서 동작하는 과부하감지수단과, 부하단락시 동작하는 단락감지수단과, 출력레벨을 표시하는 레벨표시수단으로써 이루어 상기 과부하감지수단 또는 단락감지수단의 구동으로 전원감지수단이 구동되어 후단의 모든 회로에 전원공급을 차단하도록 이루어지는 것에 의한다. 결국 전원입력측의 극단적인 과전압으로부터 회로보호가 될 수 있으며, 동시에 부하측의 과부하, 단락등에 의하여 회로보호가 될 수 있는 전력변환장치인 것을 특징으로 한다.The present invention relates to a power converter for converting a direct current power source into an alternating current power source, and more particularly, to a power converter configured to detect a trouble on a power supply side and an abnormal state on a load side to simultaneously protect a power converter and a load. Detects the power level on the input power side to cut off the power supplied to all circuits in case of overvoltage, and keeps this cut-off state, and forms a current transformer (CT) at the AC output stage to detect the overload state on the load side. It is possible to cut off and hold the power supplied to all circuits, and provide a power control device that can immediately cut off the power supplied to all circuits and hold this state at the time of load side short circuit through the current transformer. Level drive the output status of load side through In order to provide a power conversion device capable of providing a power conversion device, a power detection means for detecting a power level is formed on the power input side of the power conversion device, and through this power detection means, switching power is supplied to all circuits in the subsequent stage. To cut off the power supply when the trouble occurs and to keep the cut-off state, the current transformer to detect the output state at the AC output stage, the overload detection means operating at the overload cut-off level to this current transformer, the short circuit detection means operating at the load short circuit, It is made as a level display means for displaying the output level by driving the overload detection means or the short-circuit detection means to drive the power supply means to cut off the power supply to all the circuits of the rear stage. As a result, it is possible to protect the circuit from extreme overvoltage on the power input side, and at the same time, it is a power converter that can protect the circuit by overload and short circuit on the load side.

Description

전력변환장치Power converter

본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음As this is a public information case, the full text was not included.

제2도는 본 발명을 포함하여 이루어지는 전력 변환장치를 도시한 블럭 다이어 그램,2 is a block diagram showing a power conversion device comprising the present invention,

제3도는 제2도의 실시예로써의 상세 회로도.3 is a detailed circuit diagram as an embodiment of FIG.

Claims (2)

축전기전원입력단(DCIN)으로부터 펄스폭변조방식(PWM)으로 승압트랜스를 포화시키는 푸쉬풀 스위칭 FET와 승압된 트랜스 2차측전압을 직류로 변환하는 DC-DC컨버터(100)와 DC-DC컨버터(100)의 승압된 DC전원을 점대칭 구동되는 FET로된 부하구동회로를 통하여 교류출력(AC OUT)으로 발생하며 이 부하구등회로를 상용주파수로 스위칭 제어하는 출력조절회로를 갖는 DC-AC인버터(200) 및 동작상태표시부(300)를 포함하여 이루어지는 전력변환장치에 있어서, 축전지전원(DC+)를 감지하여 정상일때 후단의 회로에 전원을 인가하고, 비정상적일때 후단회로에 인가되는 전원을 차단하며 전원의 차단상태를 유지할 수 있도록 된 전원감지수단(10)을 상기 축전기 전원입력 단(DCIN)과 DC-DC컨버터(100) 간에 이루고, DC-AC인버터(200)의 AC출력단(ACOUT)에 출력레벨을 검출하는 변류기(CT)를 형성하여 부하측 과부하레벨과 비교하여 과부하상태에서 상기 전원감지수단(10)을 차단상태로 전환되도록 하는 과부하감지수단(20)과, 부하측 단락레벨에서 상기 전원감지수단(10)을 차단상태로 전환되도록 하는 단락감지수단(30)과, 상기 변류기(CT)를 통하여 검출되는 출력레벨을 표시하는 LED로된 레벨표시수단(40)으로 이루되, 상기 전원감지수단(10)의 리셋을 위한 셋트/리셋부(50)를 포함하여 이루어지는 것을 특징으로 하는 전력변환장치.A push-pull switching FET that saturates the boost transformer from the capacitor power input terminal DCIN to the pulse width modulation method (PWM), and a DC-DC converter 100 and a DC-DC converter 100 for converting the boosted transformer secondary side voltage into DC. DC-AC inverter (200) is generated as an AC output through a load drive circuit composed of FETs which are point-symmetrically driven FETs, and has an output regulation circuit for switching and controlling this load lamp circuit at a commercial frequency. In the power conversion device comprising a) and the operation state display unit 300, and detects the battery power (DC + ) and applies the power to the circuit of the rear stage when the normal, and if abnormal, cut off the power applied to the rear circuit. The power detecting means 10 is maintained between the capacitor power input terminal DCIN and the DC-DC converter 100 and maintains an output level at the AC output terminal ACOUT of the DC-AC inverter 200. Current transformer (CT) to detect And an overload detecting means 20 for switching the power detecting means 10 to a cutoff state in an overload state as compared with the load-side overload level, and for switching the power detecting means 10 to a cutoff state at a load short circuit level. A short-circuit detecting means 30 and a level display means 40 made of LEDs for displaying the output level detected through the current transformer CT, wherein the set / reset for resetting the power detecting means 10 is performed. Power conversion device comprising a unit (50). 제1항에 있어서, 축전기전원(DC+)의 입력단(DCIN)에 저항(R1), 제너다이오드(ZD)순방향 다이오드(D1) 및 저항(R2)으로 접지된 전압검출부(1)와 축전지전원(DC+)에 연결된 릴레이(RY)와 역지다이오드(D2)로된 전원개폐부(2), 상기 릴레이(RY)를 스위칭하는 트랜지스터(Q1)와 저항(R4,R5) 콘덴서(C1)로된 스위칭부(3), 상기 스위칭부(3)의 트랜지스터(Q1) 베이스 전위를 제한하는 사이리스터(SCR)의 게이트는 상기 전압검출부(1)의 다이오드(D1) 후단에 연결하고 에노드는 저항(R3) 경유 베이스저항(R4)에 접속하며 케소드접지된 상태보지부(4)로써 이루어 전압감지부(10')를 형성하고, 교류출력 단(ACOUT)에 변류기(CT)를 형성하여, 가변저항(VR)을 통하여 저항(R6∼R10) 콘덴서(C2∼C5) 및 레벨비교기(COM,)로된 레벨비교부(11)에 비반전 입력단으로는 기준레벨을 입력연결하고, 반전입력단에는 상기 변류기(CT) 검출레벨을 입력연결하여 이루고, 상기 레벨비교부(11)의 출력단에 다이오드(C3) 저항(R11) 콘덴서(C6)로된 반파정류회로(12)와, 트랜지스터(Q9)와 저항(R12) 및 콘덴서(C7,C8)로된 완충회로부(13)와 다이오드(D4) 저항(R13∼R19), 콘덴서(C9,C1)와 비교기(COM2)로된 과부하 출력회로부(14)는 상기 완충회로부(13) 출력을 비반전입력단에 연결하고, 반전입력단에는 기준전압으로 연결하여 이루어지는 과부하감지부(20')의 출력을 상기 전원감지부(10')의 사이리스터(SCR)게이트에 접속하며, 상기 가변저항(VR)에서 분기하여 저항(R21∼R23)과 다이오드(D5∼D6) 및 트랜지스터(Q3)로된 단락감지부(30')의 출력을 상기 전원감지부(10')의 사이리스터(SCR)게이트에 접속하고, 상기 가변저항(VR)에서 분기하여 저항(R24∼R26), 콘덴서(C11∼C13) 및 레벨드라이브 어레이(IC1) 및 레벨표시용 LED로써 이루어지는 레벨표시부(40')에 접속하여 이루되, 상기 전원(DC+)으로부터 스위치(SW)를 통하여 순방향 다이오드(D1)를 접속하여된 셋트/리셋부(50')의 다이오드(D7) 출력을 상기 전압감지부(10')의 저항(R3)에 접속하여 이루어지는 것을 특징으로 하는 전력변환장치.The voltage detecting unit (1) of claim 1, wherein the voltage detecting unit (1) is grounded at the input terminal (DCIN) of the capacitor power supply (DC + ) with a resistor (R 1 ), a zener diode (ZD) forward diode (D 1 ), and a resistor (R 2 ). Power switch 2 consisting of a relay RY and a check diode D 2 connected to a battery power source DC + , a transistor Q 1 and a resistor R 4 and R 5 for switching the relay RY. The switching part 3 of (C 1 ) and the gate of the thyristor SCR for limiting the transistor Q 1 base potential of the switching part 3 are located after the diode D 1 of the voltage detection part 1. The anode is connected to the base resistor R 4 via the resistor R 3 and formed as a cathode grounded state monitor 4 to form a voltage sensing unit 10 ′, and a current transformer at the AC output terminal ACOUT. (CT) is formed and provided to the non-inverting input terminal of the level comparator 11 formed of the resistors R 6 to R 10 , the capacitors C 2 to C 5 , and the level comparators COM, through the variable resistor VR. Enters the reference level A half-wave rectifier circuit having a diode (C 3 ) resistor (R 11 ) and a capacitor (C 6 ) at the output terminal of the level comparator (11). 12, a transistor (Q9) and a resistor (R 12) and capacitor (C 7, C 8), the buffer circuit 13 and the diode in (D 4) resistance (R 13 ~R 19), capacitor (C 9 , C 1) and the comparator (COM 2) the overload output circuit 14 is connected to the buffer circuit 13 is output to the non-inverting input terminal and inverting input terminal is connected to the reference voltage, the overload detector (20 'consisting of a) Is connected to the thyristor (SCR) gate of the power supply sensing section 10 'and branched from the variable resistor VR to resistors R 21 to R 23 , diodes D 5 to D 6 , and a transistor ( Q 3 ) is connected to the thyristor (SCR) gate of the power supply sensing section 10 'and outputted from the short circuit detecting section 30' and branched from the variable resistor VR to resistors R 24 to R. 26 ), a capacitor (C 11 to C 13 ) and a level drive array (IC 1 ) and a level display section 40 'consisting of a level display LED, which is connected to the switch SW from the power supply DC + . Characterized in that the diode D 7 output of the set / reset section 50 'connected to the forward diode D 1 is connected to the resistor R 3 of the voltage sensing section 10'. Inverter. ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.※ Note: The disclosure is based on the initial application.
KR1019940031354A 1994-11-26 1994-11-26 Power conversion device KR0123006B1 (en)

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Application Number Priority Date Filing Date Title
KR1019940031354A KR0123006B1 (en) 1994-11-26 1994-11-26 Power conversion device

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Application Number Priority Date Filing Date Title
KR1019940031354A KR0123006B1 (en) 1994-11-26 1994-11-26 Power conversion device

Publications (2)

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KR960019928A true KR960019928A (en) 1996-06-17
KR0123006B1 KR0123006B1 (en) 1997-11-22

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20020037892A (en) * 2000-11-15 2002-05-23 양준열 A buck conveerter with oevr voltage protection circuit
KR100622972B1 (en) * 2005-06-17 2006-09-13 삼성전자주식회사 Control apparatus and control method for switch-mode power supply

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100965232B1 (en) * 2008-12-04 2010-06-25 금호전기주식회사 Apparatus and method for determining status of electrical apparatus

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20020037892A (en) * 2000-11-15 2002-05-23 양준열 A buck conveerter with oevr voltage protection circuit
KR100622972B1 (en) * 2005-06-17 2006-09-13 삼성전자주식회사 Control apparatus and control method for switch-mode power supply

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