KR20010027874A - Input current limit controller for boost type chopper - Google Patents

Input current limit controller for boost type chopper Download PDF

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KR20010027874A
KR20010027874A KR1019990039847A KR19990039847A KR20010027874A KR 20010027874 A KR20010027874 A KR 20010027874A KR 1019990039847 A KR1019990039847 A KR 1019990039847A KR 19990039847 A KR19990039847 A KR 19990039847A KR 20010027874 A KR20010027874 A KR 20010027874A
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current
input current
voltage
input
limiter
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KR1019990039847A
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KR100486024B1 (en
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김태완
조성준
김두식
서광덕
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김형벽
현대중공업 주식회사
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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
    • H02M7/30—Conversion of ac power input into dc power output without possibility of reversal by dynamic converters
    • H02M7/32—Conversion of ac power input into dc power output without possibility of reversal by dynamic converters using mechanical contact-making and -breaking parts
    • H02M7/36—Conversion of ac power input into dc power output without possibility of reversal by dynamic converters using mechanical contact-making and -breaking parts with electromagnetically-operated vibrating contacts, e.g. chopper
    • 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
    • H02M1/38—Means for preventing simultaneous conduction of switches

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Dc-Dc Converters (AREA)

Abstract

PURPOSE: An input current restriction control system for a booster chopper is provided to prevent the circuit element from damage by limiting the input current applied to the booster chopper when the input current increases by overload. CONSTITUTION: The input current restriction control system comprises two current reversing protective diodes(D1,D2) for generating the rectified input DC current(Vin), a capacitor(C1), two switching elements(Q1,Q2) for controlling the input current applied to the diodes(D1,D2) respectively, a voltage control unit(10) for generating the reference input current(Iref), and a current control unit(20) for controlling the switching ON operation by using the difference between the reference input current and the input current. The voltage control unit has the first subtractor(11) for producing the difference voltage between applied input voltage(V_dc) and the reference voltage, the first proportional integral controller(12) for generating the integrated difference voltage, and the first limiter for limiting the amplitude of the integrated difference voltage within a fixed level. The current control unit has the second subtractor(21) for producing the difference current between applied input current(V_in) and the reference current, the second proportional integral controller(22) for generating the integrated difference current, and the second limiter for limiting the amplitude of the integrated difference current within a fixed level. In the overcurrent state, the second limiter generates a signal to turn on the switching elements, which restricts the input current and decreases the input DC voltage.

Description

승압형 초퍼의 입력전류 제한 제어장치{Input current limit controller for boost type chopper}Input current limit controller for boost type chopper}

본 발명은 승압형 초퍼(Chopper)의 입력전류 제한 제어장치에 관한 것으로, 특히 입력전류가 일정 기준치 이상으로 증가되었을 경우 이를 입력전류 제한 기준값으로 제한하여 승압형 초퍼로 과전류가 인가되는 것을 차단시켜 시스템이 불안정하게 동작 및 회로소자의 손상을 방지하기 위한 승압형 초퍼의 입력전류 제한 제어장치에 관한 것이다.BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an input current limiting control device of a booster type chopper. In particular, when the input current is increased above a predetermined threshold value, the present invention is limited to the input current limiting reference value to block an overcurrent from being applied to the booster type chopper. The present invention relates to an input current limit control device of a boost type chopper for preventing unstable operation and damage to circuit elements.

일반적으로 승압형 초퍼 전력회로는 저전압 대전류의 입력조건으로 인해 출력의 변동에 대해 입력이 민감하게 변동한다. 이는 전력회로에 입력되는 전압이 낮을수록 더욱 심하여 시스템의 안정도에 악영향을 줄 수 있다.In general, boost type chopper power circuits are sensitive to input fluctuations due to low voltage and high current input conditions. This is more severe the lower the voltage input to the power circuit may adversely affect the stability of the system.

그러나, 종래 승압형 초퍼 전력회로에서는 부하측에 과부하가 걸려 입력전류가 일정 기준치 이상으로 증가했을 경우 입력전류를 제한할 수 있는 수단이 존재하지 않아 승압형 초퍼로 과전류가 인가되어 회로소자가 손상 및 시스템이 불안정하게 동작하는 문제점이 있었다.However, in the conventional boost type chopper power circuit, when the load side is overloaded and the input current increases above a certain reference value, there is no means for limiting the input current. Thus, the overcurrent is applied to the boost type chopper and the circuit element is damaged. There was a problem of this unstable operation.

본 발명에서는 과부하로 인해 승압형 초퍼로 인가되는 입력전류가 일정 기준치 이상으로 증가되었을 경우 입력전류를 입력전류 제한 기준값으로 제한하여 승압형 초퍼로 과전류가 인가되는 것을 차단시켜 회로소자가 손상되는 것을 방지하고 승압형 초퍼 시스템이 안정적으로 동작할 수 있도록 하기 위한 것이다.In the present invention, when the input current applied to the boost type chopper due to overload is increased above a certain reference value, the input current is limited to the input current limit reference value to prevent overcurrent from being applied to the boost type chopper to prevent damage to the circuit device. And the boosted chopper system for stable operation.

도 1은 본 발명 승압형 초퍼의 입력전류 제한 제어장치를 보인 회로구성도.1 is a circuit diagram showing an input current limiting control device of the boost type chopper of the present invention.

도 2는 본 발명 도 1의 각 부 출력파형도.2 is a diagram of each sub-output waveform of the present invention Figure 1;

본 발명 승압형 초퍼의 입력전류 제한 제어장치의 구성은 도 1에 도시된 바와같이,As shown in FIG. 1, the configuration of the input current limiting control device of the boost type chopper according to the present invention is as follows.

입력 직류전압(Vin)을 평활하여 부하측(Load)으로 출력하는 전류역전방지용 다이오드(D1,D2) 및 평활용 콘덴서(C1)와, 스위칭 온/오프 동작하여 상기 다이오드(D1,D2)로 인가되는 전류(Id)량을 제어하는 스위칭소자(Q1,Q2)와, 상기 다이오드(D1,D2) 및 콘덴서(C1)를 통해 부하측으로 공급되는 직류전압(vdc)과 기준전압(Vref)의 차신호를 입력전류 기준값(Iref)로 출력하는 전압제어수단(10)과, 상기 전압제어수단(10)에서 출력된 입력전류 기준값(Iref)과 입력전류(Iin)의 차신호를 상기 스위칭소자(Q1,Q2)의 스위칭 온동작시간으로 제어하는 전류제어수단(20)으로 구성됨을 특징으로 한다.The current reversal prevention diodes D1 and D2 and the smoothing capacitor C1 that smooth the input DC voltage Vin and output them to the load side, and are switched on / off and applied to the diodes D1 and D2. The difference between the switching elements Q1 and Q2 controlling the amount of current I d , and the DC voltage v dc supplied to the load side through the diodes D1 and D2 and the capacitor C1 and the reference voltage Vref. A voltage control means 10 for outputting a signal as an input current reference value Iref, and a difference signal between an input current reference value Iref and an input current I in output from the voltage control means 10; It is characterized by consisting of a current control means 20 for controlling the switching on operation time of the Q1, Q2.

이때, 상기 전압제어수단(10)은 부하측으로 공급되는 직류전압(vdc)과 기준전압(Vref)의 차신호를 출력하는 제 1감산기(11)와, 상기 제 1감산기(11)의 출력신호를 적분 출력하는 제 1비례적분제어기(Proportional Integral controller)(12)와, 상기 제 1비례적분제어기(12)에서 출력된 신호의 진폭을 일정레벨로 제한하여 이를 입력전류 기준값(Iref)으로 출력하는 제 1리미터부(Limiter)(13)를 포함한다.At this time, the voltage control means 10 is a first subtractor 11 for outputting a difference signal between the DC voltage (v dc ) and the reference voltage (Vref) supplied to the load side, and the output signal of the first subtractor 11 Proportional integral controller 12 for outputting the integral and limiting the amplitude of the signal output from the first proportional integral controller 12 to a predetermined level and outputting it as an input current reference value Iref. A first limiter 13 is included.

그리고, 상기 전류제어수단(20)은 상기 전압제어수단(10)의 제 1리미터부(13)에서 출력된 입력전류 기준값(Iref)과 입력전류(Iin)의 차신호를 출력하는 제 2감산기(21)와, 상기 제 2감산기(21)의 출력신호를 적분 출력하는 제 2비례적분제어기(22)와, 상기 제 2비례적분제어기(22)에서 출력된 신호의 진폭을 일정레벨로 제한하여 출력하는 제 2리미터부(23)를 포함하며,In addition, the current control means 20 is a second subtractor for outputting a difference signal between the input current reference value Iref and the input current I in output from the first limiter 13 of the voltage control means 10. (21), the second proportional integral controller 22 for integrally outputting the output signal of the second subtractor 21, and the amplitude of the signal output from the second proportional integral controller 22 to be limited to a predetermined level. It includes a second limiter unit 23 for outputting,

미설명 부호 L은 인덕터,D3,D4는 다이오드이다.Reference numeral L denotes an inductor, and D3 and D4 denote diodes.

상기와 같이 구성된 본 발명 승압형 초퍼의 입력전류 제한 제어장치의 작용을 첨부된 도면을 참조하여 설명하면 다음과 같다.Referring to the accompanying drawings, the operation of the input current limiting control device of the booster type chopper of the present invention configured as described above is as follows.

입력 직류전압(Vin)을 입력단인 인덕터(L)와 스위칭 소자(Q1,Q2)를 이용하여 축적된 에너지 즉, 전류를 전류역전방지용 다이오드(D1,D2)를 통해 부하측으로 전달하며, 이때 평활용 콘덴서(C1)는 스위칭된 입력전압을 평활하게 된다.The input DC voltage Vin is transferred using the inductor L, which is an input terminal, and the switching elements Q1 and Q2, that is, the energy, that is, the current, to the load side through the current reversal prevention diodes D1 and D2. The capacitor C1 smoothes the switched input voltage.

여기서, 부하측에 과부하가 걸려 입력전류(Iin)가 일정 기준치 이상으로 증가했을 경우 전압제어수단(10)과 전류제어수단(20)에 의해 입력전류((Iin)는 입력전류 제한 기준값으로 제한된다.Here, when the load side is overloaded and the input current I in increases above a predetermined reference value, the input current (I in ) is limited to the input current limit reference value by the voltage control means 10 and the current control means 20. do.

입력전류(Iin)가 입력전류 제한 기준값으로 제한하는 과정을 보다 상세히 설명하면, 먼저 전압제어수단(10)의 내부에 포함된 제 1감산기(11)에서 부하측으로 공급되는 직류전압(vdc)과 일정 기준전압(Vref)의 차(Vref - vdc)를 구해 제 1비례적분제어기(12)로 출력한다.Referring to the process of limiting the input current (I in ) to the input current limit reference value in more detail, first the DC voltage (v dc ) supplied to the load side from the first subtractor 11 included in the voltage control means (10) The difference Vref − v dc between the constant reference voltage Vref is obtained and output to the first proportional integral controller 12.

그러면, 제 1비례적분제어기(12)에서는 차신호(Vref - vdc)를 적분하여 제 1리미터부(13)로 출력하고, 제 1리미터부(13)는 적분출력된 신호의 진폭이 일정레벨을 넘지 않도록 제한하여 이를 전류제어수단(20)의 입력전류 기준값(Iref)으로 인가한다.Then, the first proportional integral controller 12 integrates the difference signal Vref-v dc and outputs the integrated signal to the first limiter 13, and the first limiter 13 has a constant amplitude of the integrated output signal. It is limited so as not to exceed this value and applied to the input current reference value Iref of the current control means 20.

한편, 전류제어수단(20)의 내부에 포함된 제 2감산기(21)에서는 상기 제 1리미터부(13)로부터 인가된 입력전류 기준값(Iref)과 입력전류(Iin)의 차(Iref - Iin)를 제 2비례적분제어부(12)로 출력하고, 비례적분제어기전류리미터부(12)는 차신호(Iref - Iin)를 적분하여 제 2리미터부(23)로 출력한다.On the other hand, in the second subtractor 21 included in the current control means 20, the difference between the input current reference value Iref and the input current I in applied from the first limiter unit 13 (Iref-I) in ) is output to the second proportional integral controller 12, and the proportional integral controller current limiter 12 integrates the difference signal Iref-I in and outputs it to the second limiter 23.

그러면, 제 2리미터부(23)에서는 적분출력된 신호의 진폭이 일정레벨을 넘지 못하도록 제한한후 이를 스위칭소자(Q1,Q2)의 온(ton)신호에 의해 스위칭 온 시간을 제어한다.Then, the second limiter 23 limits the amplitude of the integrated output signal not to exceed a predetermined level and then controls the switching on time by the on signal of the switching elements Q1 and Q2.

이때, 스위칭소자(Q1,Q2)는 상기 제 2리미터부(23)에서 출력된 신호에 의해 온(on)되고, 이로 인해 스위칭소자(Q1,Q2)로 일정전류(IG)가 흘러 다이오드(D1,D2) 및 콘덴서(C1)로 입력되는 전류(Id)량은 감소되어진다.At this time, the switching elements Q1 and Q2 are turned on by the signal output from the second limiter 23, and thus, a constant current I G flows to the switching elements Q1 and Q2. The amount of current I d input to D1, D2 and capacitor C1 is reduced.

이와같이, 과부하로 인해 입력전류가 기준치 이상으로 증가했을 경우 전류제어수단(20)의 제 2리미터부(23)에서 출력된 신호에 의해 스위칭소자(Q1,Q2)가 온동작하여 입력전류(Iin)를 제한함으로써, 부하측으로 공급되는 직류전압(Vdc)이 감소하게 된다.As described above, when the input current increases by more than the reference value due to the overload, the switching elements Q1 and Q2 are turned on by the signal output from the second limiter 23 of the current control means 20 so that the input current I in By limiting), the DC voltage V dc supplied to the load side is reduced.

이때, 과부하가 일시적인 현상이라면 부하가 정상으로 복귀했을 경우 부하측 인가전압도 다시 정상으로 복귀되지만, 과부하가 지속적이면 이를 고장으로 판단하여 승압형 초퍼 전력회로의 동작을 멈추게 함으로써, 승압형 초퍼회로가 손상되는 것을 보호한다.At this time, if the overload is a temporary phenomenon, if the load returns to normal, the applied voltage on the load side returns to normal again, but if the overload continues, it is regarded as a failure and the operation of the boosted chopper power circuit is stopped to damage the boosted chopper circuit. To protect yourself.

도 2에서 A는 입력전류 제한 제어 구성요소가 없을 경우 입력전류 인가상태를 나타낸 것이고, B는 전압제어수단(10)과 전류제어수단(20)에 의해 입력전류가 입력전류 제한 기준값으로 제한된 상태를 나타낸 것이다.In FIG. 2, A indicates an input current application state when there is no input current limit control component, and B indicates an input current limited by the voltage control means 10 and the current control means 20 to the input current limit reference value. It is shown.

상기에서 설명한 바와같이, 본 발명에서는 과부하로 인해 입력전류가 일정 기준치 이상으로 증가시 승압형 초퍼의 입력전류를 입력전류 제한 기준값으로 제한함으로써, 승압형 초퍼 시스템이 안정적으로 동작할 수 있고 또 회로소자가 손상되는 것을 방지할 수 있게 된다.As described above, in the present invention, when the input current increases by more than a predetermined reference value due to overload, by limiting the input current of the boost type chopper to the input current limit reference value, the boost type chopper system can be stably operated and the circuit element. Can be prevented from being damaged.

Claims (2)

입력 교류전압(Vin)을 정류 및 평활하여 부하측(Load)으로 출력하는 정류부와, 스위칭 온/오프 동작하여 상기 정류부로 입력되는 전류(Id)량을 제어하는 스위칭부와, 상기 정류부를 통해 부하측으로 공급되는 직류전압(vdc)과 기준전압(Vref)의 차신호를 입력전류 기준값(Iref)로 출력하는 전압제어수단과, 상기 전압제어수단에서 출력된 입력전류 기준값(Iref)과 입력전류(Iin)의 차신호를 상기 스위칭소자의 스위칭 온동작시간으로 제어하는 전류제어수단으로 구성됨을 특징으로 하는 승압형 초퍼의 입력전류 제한 제어장치.A rectifying unit rectifying and smoothing an input AC voltage Vin and outputting the load to a load side, a switching unit controlling an amount of current I d input to the rectifying unit by switching on and off, and a load side through the rectifying unit. Voltage control means for outputting the difference signal between the DC voltage v dc and the reference voltage Vref supplied to the input current reference value Iref, and the input current reference value Iref and the input current (outputted from the voltage control means). And a current control means for controlling the difference signal of I in ) to a switching-on operation time of the switching element. 제 1항에 있어서, 상기 전압제어수단은 부하측으로 공급되는 직류전압(vdc)과 기준전압(Vref)의 차신호를 출력하는 제 1감산기와, 상기 제 1감산기의 출력신호를 적분 출력하는 제 1비례적분제어기와, 상기 제 1비례적분제어기에서 출력된 신호의 진폭을 일정레벨로 제한하여 이를 입력전류 기준값(Iref)으로 출력하는 제 1리미터부를 포함하고,2. The apparatus of claim 1, wherein the voltage control means comprises: a first subtractor for outputting a difference signal between a direct current voltage (v dc ) and a reference voltage (Vref) supplied to a load side, and a first subtractor for integrally outputting an output signal of the first subtractor; A proportional integrator and a first limiter for limiting the amplitude of the signal output from the first proportional integrator to a predetermined level and outputting it as an input current reference value Iref; 상기 전류제어수단은 상기 전압제어수단의 제 1리미터부에서 출력된 입력전류 기준값(Iref)과 입력전류(Iin)의 차신호를 출력하는 제 2감산기와, 상기 제 2감산기의 출력신호를 적분 출력하는 제 2비례적분제어기와, 상기 제 2비례적분제어기에서 출력된 신호의 진폭을 일정레벨로 제한하여 출력하는 제 2리미터부를 포함함을 특징으로 하는 승압형 초퍼의 입력전류 제한 제어장치.The current control means integrates a second subtractor which outputs a difference signal between an input current reference value Iref and an input current I in output from the first limiter of the voltage control means, and integrates an output signal of the second subtractor. And a second limiter for outputting the second proportional integrating controller and a second limiter for limiting and outputting the amplitude of the signal output from the second proportional integrating controller to a predetermined level.
KR10-1999-0039847A 1999-09-16 1999-09-16 Input current limit controller for boost type chopper KR100486024B1 (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100593455B1 (en) * 2000-05-08 2006-06-28 현대중공업 주식회사 Switching control method and input current limit control device of boost type chopper
WO2020096453A1 (en) * 2018-11-11 2020-05-14 Vetus B.V. Controlling unit

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH04106348A (en) * 1990-08-24 1992-04-08 Fujitsu General Ltd Device for limiting input current of air conditioner
JPH07231650A (en) * 1994-02-21 1995-08-29 Ikeda Electric Co Ltd Boosting chopper circuit
KR19980026204A (en) * 1996-10-08 1998-07-15 박정옥 Overcurrent Breaker
JPH10336877A (en) * 1997-05-29 1998-12-18 Toyo Electric Mfg Co Ltd Overcurrent protection device
KR20000013381U (en) * 1998-12-26 2000-07-15 전주범 Overcurrent breaking device of electronic equipment

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100593455B1 (en) * 2000-05-08 2006-06-28 현대중공업 주식회사 Switching control method and input current limit control device of boost type chopper
WO2020096453A1 (en) * 2018-11-11 2020-05-14 Vetus B.V. Controlling unit
NL2021974B1 (en) * 2018-11-11 2020-05-15 Vetus B V Controlling unit
US11377054B2 (en) 2018-11-11 2022-07-05 Vetus B.V. Controlling unit

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