KR970060654A - High Power Factor Pulse Width Modulation (PWM) Type 2-Phase 3-Phase Stop Device - Google Patents

High Power Factor Pulse Width Modulation (PWM) Type 2-Phase 3-Phase Stop Device Download PDF

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KR970060654A
KR970060654A KR1019960000223A KR19960000223A KR970060654A KR 970060654 A KR970060654 A KR 970060654A KR 1019960000223 A KR1019960000223 A KR 1019960000223A KR 19960000223 A KR19960000223 A KR 19960000223A KR 970060654 A KR970060654 A KR 970060654A
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input
phase
pwm
pulse width
output
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KR1019960000223A
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Korean (ko)
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KR0163269B1 (en
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구헌희
조기연
권우현
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변승봉
재단법인 한국전기연구소
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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
    • H02M7/53—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 using devices of a triode or transistor type requiring continuous application of a control signal
    • H02M7/537—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 using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only, e.g. single switched pulse inverters
    • H02M7/5387—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 using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only, e.g. single switched pulse inverters in a bridge configuration
    • H02M7/53871—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 using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only, e.g. single switched pulse inverters in a bridge configuration with automatic control of output voltage or current
    • H02M7/53875—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 using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only, e.g. single switched pulse inverters in a bridge configuration with automatic control of output voltage or current with analogue control of three-phase output
    • 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
    • H02M1/42—Circuits or arrangements for compensating for or adjusting power factor in converters or inverters
    • H02M1/4208—Arrangements for improving power factor of AC input
    • H02M1/4216—Arrangements for improving power factor of AC input operating from a three-phase input voltage

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Rectifiers (AREA)

Abstract

본 발명은 단순한 다이오드 정류기나 위상제어 정류기를 보다 역률면에서 월등히 좋은 성능을 보이는데, 6-스위치 전파 정류기와 비슷한 출력을 내면서도 제어방법이 훨씬 간단하고, 적은 갯수의 스위치로 구성되기 때문에 저가격과 고역률을 동시에 만족시킬 수 있는 고역률 펄스폭변조(PWM)방식 2중형 3상 정류장치에 관한 것이다. 본 발명은 두개의 펼스폭변조(PWM)장치를 연결하여 각각의 장치가 180°위상차를 갖도록 제어하므로써 개별 펄스폭변조(PWM)장치의 경우보다 전력용량이 증대되며 입/출력 전류를 연속적으로 되도록하여 입/출력 고조파 성분을 감소시키고 소자의 첨두전류를 낮아지게 하는 특징이 있다.The present invention shows that a simple diode rectifier or a phase controlled rectifier is much better in terms of power factor than a 6-switch full-wave rectifier. However, since the control method is much simpler and has a smaller number of switches, Power phase pulse width modulation (PWM) system duplex three-phase rectifier device capable of satisfying the power factor simultaneously. The present invention relates to an apparatus and method for controlling a PWM (Pulse Width Modulation) device by connecting two PWM devices to control each device to have a phase difference of 180 ° so that the power capacity is increased and the input / Thereby reducing the input / output harmonic components and lowering the peak current of the device.

Description

고역률 펄스폭변조(PWM) 방식 2중형 3상 정류장치High Power Factor Pulse Width Modulation (PWM) Type 2-Phase 3-Phase Stop Device

본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음Since this is a trivial issue, I did not include the contents of the text.

제2도는 본 발명의 고역률 펄스폭변조(PWM)방식 2중형 3상 정류장치의 전력부 회로도.FIG. 2 is a power circuit diagram of a high power factor pulse width modulation (PWM) system duplex three-phase rectifier of the present invention; FIG.

제4도는 제1도 및 제2도에 대한 4가지 동작모드 (A)는 모드1,(B)는 모드2,(C)는 모드3,(D)는 모드4.FIG. 4 shows four operation modes (A) and (B) for the first and second diagrams, respectively.

Claims (3)

교류(AC) 전압을 입력으로 하여 직류(DC) 전압을 출력하는 정류장치에 있어서, 입력단 인덕터(11)(11')(11),다이오드 브리지(12), 반도체 스위치(13), 출력다이오드(14)(14')및 평활용 콘덴서(15)등의 소자들로 구성되어 입력단에 리액터와 직렬로 단순 다이오드 브리지 그리고, 별렬로 하나의 스위치를 갖는 장치의 입·출력단을 연결하여 180°의 위상차를 갖도록 2중으로 제어하므로써 각각의 개별장치들은 입·출력 전류가 불연속적으로 되나, 전체적으로는 연속전류가 흐르도록하여 전류의 고조파 성분을 최소화시켜 고역률을 실현할수 있고, 펼스폭변조(PWM) 스위칭 주파수는 개별장치보다 2배가 되므로 각각의 장치에서는 스위칭 주파수를 1/2로 하여도 되므로 스위칭 손실을 줄일 수 있는 주회로부(10); 교류(AC) 입력을 변압기(31)를 통해서 서로 절연된 3개의 교류(AC)를 얻고, 이것을 브리지 다이오드(32)로 전파정류하고, 캐패시터 평활회로를 거친후 7815 레귤레이터(33)를 사용하여 직류 전원으로 만드는 전원부(30)와; 내부적으로 정전압 장치가 있는 UC3825(41)와, 이 정전압 장치의 전원에 저항 두개를 직렬로 연결하여 전압 일부가 내부에러 앰프의 플러스(+)극성쪽에 걸려 펄스폭을 조절하는 기준이 되고 주회로의 출력전압에 비례하도록 저항비를 조절하여 에러 앰프의 마이너스(-) 극성에 연결하여 주회로의 출력전압이 크면 펄스폭이 감소하도록 하며, 이러한 미세조정을 하기 위하여 에러 앰프의 출력단자인 3번 단자와 마이너스(-)극성 1번 단자에 R과 C를 연결하여 부궤환을 걸며, 내부 오실레이터에 R과 C를 연결하여 내부 발진이 일어나도록 하는 제어부(40)와; 상기 UC3825(41)에 의한 접지가 분리되지 않은 두 게이트 신호가 각각 HP3101 옵터커블러(51)의 입력측 양단에 인가되어 접지가 분리된 게이트 신호로 만들어지게 되는 구동부(50)로 이루어지는 제어회로(20)로 구성됨을 특징으로 하는 고역률 펄스폭변조(PWM) 방식 2중혀 3상 정류장치.11 ', 11, a diode bridge 12, a semiconductor switch 13, and an output diode (hereinafter, referred to as &quot; output diode &quot;) 11 for outputting a direct current (DC) 14), a smoothing capacitor (15), and the input / output terminals of a device having a single switch in series and a simple diode bridge in series with the reactor are connected to the input terminal, The input and output currents are discontinuous, but the continuous current flows as a whole, so that the harmonic components of the current can be minimized to realize a high power factor, and the swing modulation (PWM) switching The main circuit unit 10 can reduce the switching loss since the frequency is twice as much as that of the individual devices, so that the switching frequency can be reduced to 1/2 in each device. Three alternating currents (AC) insulated from each other are obtained through an AC input from a transformer 31 and then subjected to full-wave rectification by a bridge diode 32. After passing through a capacitor smoothing circuit, A power supply unit 30 for generating power; By connecting two resistors in series with the UC3825 (41), which has a constant voltage device internally, and a voltage source of this constant voltage device, a part of the voltage is applied to the plus (+) polarity side of the internal error amplifier to adjust the pulse width. To adjust the resistance ratio so as to be proportional to the output voltage, connect it to the negative (-) polarity of the error amplifier so that the pulse width decreases if the output voltage of the main circuit is large. A negative polarity terminal R 1 and a negative terminal R 2 to connect the R and C terminals to each other, and the internal oscillator R and C are connected to each other to cause internal oscillation; A control circuit 20 comprising a driving unit 50 in which two gate signals not grounded by the UC3825 41 are applied to both ends of the input side of the HP 3101 optocoupler 51 so as to be grounded, (2) a high-power-rate pulse width modulation (PWM) system comprising two-phase three-phase rectification devices. 제1항에 있어서, 출력전압의 제어는 스위칭 주파수를 일정하게 유지하면서 도통 시간을 부하의 상태에 따라 변경시키면서 제어하고, 스위치가 온(On)일때 모든 3상 교류 입력전류는 세개의 리액8터와 브리지 다이오드를 통하여 단락되며, 이때 모든 입력전류는 동시에 각 상의 순시 값에 비례하여 상승하고, 오프(Off)일 때는 인덕터에 저장된 에너지가 출력 다이오드를 통해서 출력으로 전달되며, 따라서 인덕터에 흐르는 전류가 감소하게 되어 한 주기의 펄스폭변조(PWM)구간에서 전류가 흐르지 않는 불연속 전류구간을 만들게 되고, 다음 온(On)신호가 들어올 때까지 영전류를 유지하며, 각 입력전류는 온(On) 구간의 마지막 순간에서 피크값을 유지하며,이 피크값은 입력전압의 크기에 비례하여 결국 입력전류의 평균파형은 정현파가 되고 입력전압에 대한 입력전류의 위상은 같고 고조파 성분을 최소화 시킴으로써 역률은 개선할 수 있게 됨을 특징으로 하는 고역률 펄스폭변조(PWM) 방식 2중형 3상 정류장치.2. The method of claim 1, wherein the control of the output voltage is performed while changing the conduction time according to the state of the load while keeping the switching frequency constant, and when the switch is on, all the three- And the bridge diode. At this time, all the input currents are simultaneously increased in proportion to the instantaneous value of each phase, and when off, the energy stored in the inductor is transferred to the output through the output diode, (PWM) period, and maintains the zero current until the next ON signal is received, and each input current is maintained in the ON period The peak value is proportional to the magnitude of the input voltage, so that the average waveform of the input current becomes sinusoidal and the input voltage And the power factor can be improved by minimizing the harmonic component and the phase of the input current is the same. The high power factor pulse width modulation (PWM) system duplex three-phase rectifier device. 제1항 또는 제2항에 있어서, 스위칭 소자를 펄스폭변조(PWM)제어로 스위칭 함으로써 입력전류가 0부터 증가하기 시작하여 마지막 순간에 피크치를 이루는 t0 〈 t〈 t1 구간, 모든 입력전류가 흐르는 t1 〈 t〈 t2 구간, 두 상의 입력전류가 흐르는 t2 〈 t 〈 t3 구간, 모든 입력전류가 흐르지 않는 불연속전류구간인 t3 〈 t 〈 (t3+Ts)구간인 4가지 동작모드 가지며, 이것을 한 주기로 하는것을 특징으로 하는 고역률 펄스폭변조(PWM)방식 2중형 3상 정류장치.The method as claimed in claim 1 or 2, wherein the input current starts to increase from zero by switching the switching element to the pulse width modulation (PWM) control, and t0 &lt; t &lt; t1, and t3 <t <(t3 + Ts), which is a discontinuous current section in which all the input currents do not flow, in a period t1 <t <t2 and t2 <t <t3 in which input currents of two phases flow, (PWM) -based high-power three-phase rectifier device.
KR1019960000223A 1996-01-08 1996-01-08 A high factor dual type-3phase rectifier with pulse wide modulation KR0163269B1 (en)

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KR1019960000223A KR0163269B1 (en) 1996-01-08 1996-01-08 A high factor dual type-3phase rectifier with pulse wide modulation

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KR1019960000223A KR0163269B1 (en) 1996-01-08 1996-01-08 A high factor dual type-3phase rectifier with pulse wide modulation

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KR970060654A true KR970060654A (en) 1997-08-12
KR0163269B1 KR0163269B1 (en) 1999-04-15

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