KR20180136734A - The input current ripple reduction circuit of the power factor correction circuit - Google Patents

The input current ripple reduction circuit of the power factor correction circuit Download PDF

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KR20180136734A
KR20180136734A KR1020170075850A KR20170075850A KR20180136734A KR 20180136734 A KR20180136734 A KR 20180136734A KR 1020170075850 A KR1020170075850 A KR 1020170075850A KR 20170075850 A KR20170075850 A KR 20170075850A KR 20180136734 A KR20180136734 A KR 20180136734A
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ripple
current
power
circuit
reducing
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KR1020170075850A
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Korean (ko)
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KR102485481B1 (en
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권민성
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현대모비스 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
    • H02M1/00—Details of apparatus for conversion
    • H02M1/14—Arrangements for reducing ripples from dc input or output
    • B60L11/1811—
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L53/00—Methods of charging batteries, specially adapted for electric vehicles; Charging stations or on-board charging equipment therefor; Exchange of energy storage elements in electric vehicles
    • B60L53/20—Methods of charging batteries, specially adapted for electric vehicles; Charging stations or on-board charging equipment therefor; Exchange of energy storage elements in electric vehicles characterised by converters located in the vehicle
    • 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
    • H02M1/0064—Magnetic structures combining different functions, e.g. storage, filtering or transformation
    • 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
    • H02M1/4225—Arrangements for improving power factor of AC input using a non-isolated boost converter
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60Y—INDEXING SCHEME RELATING TO ASPECTS CROSS-CUTTING VEHICLE TECHNOLOGY
    • B60Y2200/00—Type of vehicle
    • B60Y2200/90—Vehicles comprising electric prime movers
    • B60Y2200/91—Electric vehicles
    • H02M2001/0064—
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B70/00—Technologies for an efficient end-user side electric power management and consumption
    • Y02B70/10—Technologies improving the efficiency by using switched-mode power supplies [SMPS], i.e. efficient power electronics conversion e.g. power factor correction or reduction of losses in power supplies or efficient standby modes
    • Y02B70/126—
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/60—Other road transportation technologies with climate change mitigation effect
    • Y02T10/70—Energy storage systems for electromobility, e.g. batteries
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/60—Other road transportation technologies with climate change mitigation effect
    • Y02T10/7072—Electromobility specific charging systems or methods for batteries, ultracapacitors, supercapacitors or double-layer capacitors
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/60—Other road transportation technologies with climate change mitigation effect
    • Y02T10/72—Electric energy management in electromobility
    • Y02T10/7216—
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02T90/10—Technologies relating to charging of electric vehicles
    • Y02T90/14—Plug-in electric vehicles

Abstract

According to one aspect of the present invention, an input current ripple reduction circuit of a power factor correction circuit capable of reducing the cost of products comprises: a ripple reducing unit reducing ripple of a current through current reduction of rectified alternating current power so that the ripple of the rectified current of the supplied alternating current power may be reduced and transmitted to a switching element; and a noise filter condenser removing the ripple of the current reduced through the ripple reducing unit.

Description

역률 보상회로의 입력 전류 리플 저감 회로{The input current ripple reduction circuit of the power factor correction circuit}[0001] The present invention relates to an input current ripple reduction circuit for a power factor correction circuit,

본 발명은 역률 보상회로의 입력 전류 리플 저감 회로에 관한 것으로서, 보다 구체적으로는 정류 전류의 리플을 제거하여 입력 필터의 크기를 줄이거나 제거하고, 인덕터의 크기를 축소하여 차량 탑재형 충전기의 제품 크기를 소형화할 수 있는 역률 보상회로의 입력 전류 리플 저감 회로에 관한 것이다. The present invention relates to an input current ripple reduction circuit of a power factor correction circuit, and more particularly, to a power factor correction circuit which reduces ripple of a rectified current to reduce or eliminate the size of an input filter, To an input current ripple reducing circuit of a power factor correcting circuit capable of downsizing the input current ripple reducing circuit.

일반적으로 충전기는 교류 전원을 입력받아 차량 내부의 고전압 배터리 충전을 위한 직류 전원을 생성하는 장치이다. 여기서 교류 전원을 직류 전원으로 변환하기 위해서는 전력변환 효율이 높은 스위칭 수단이 이용된다. Generally, a charger is a device that receives an AC power and generates a DC power for charging a high-voltage battery in the vehicle. Here, in order to convert AC power into DC power, a switching means having a high power conversion efficiency is used.

스위칭 소자로는 주로 MOSFET, 다이오드 및 IGBT 등 반도체 소자와 더불어 자성부품인 인덕터와 변압기를 사용한다. The switching elements are mainly semiconductor elements such as MOSFET, diode and IGBT, and inductors and transformers, which are magnetic parts.

그리고, 대전력 구동 제품인 차량 탑재형 충전기는 AC 역률에 대한 규제로 인하여 역률 보상회로가 필수적이다. In addition, the on-board type charger, which is a high power driving product, requires a power factor compensation circuit due to the regulation on the AC power factor.

도 1은 일반적인 역률 보상 회로를 나타낸 도면으로, 종래 역률 보상 회로는 전원부(10)와 정류부(20) 및 부스트 컨버터(30)로 이루어진다. FIG. 1 shows a general power factor compensating circuit. The conventional power factor compensating circuit comprises a power source 10, a rectifier 20 and a boost converter 30.

이러한 종래 역률 보상 회로는 전기 안전 규격 및 전자기 적합성 규제에 따라, 도 2에 도시된 바와 같이, 입력 교류 전원 필터회로(40)가 필요하다. Such a conventional power factor correction circuit requires an input AC power filter circuit 40, as shown in Fig. 2, in accordance with the electric safety standard and the electromagnetic compatibility regulations.

그리고 차랑 탑재형 충전기는 차량 내부에 장착되어야 하기 때문에, 제품의 크기가 작을수록 유리하고, 중량 또한 적어야 한다. And since the onboard charger must be mounted inside the vehicle, the smaller the size of the product, the more advantageous it is and the less weight it has.

그러나, 종래 차량 탑재형 충전기의 크기 줄이거나 중량을 감소시키기 위해서는 자성부품인 인덕턴스의 크기를 줄이거나 성능 향상을 통해 부품 수를 감소시켜야 한다. However, in order to reduce the size or the weight of the conventional on-board charger, the number of parts must be reduced by reducing the size of inductance, which is a magnetic component, or by improving performance.

그 중, 종래 자성부품의 크기를 줄이는 방법은 부스트 컨버터의 스위칭 주파수를 높이는 방법이 있으나, 이는 반도체 소자의 소모 전력량을 상승시켜 전력변환 효율이 저하되는 문제점이 있다. In the conventional method of reducing the size of a magnetic part, there is a method of increasing the switching frequency of the boost converter. However, there is a problem that the power consumption efficiency of the semiconductor device is lowered by increasing the consumption power of the semiconductor device.

반면에, 인덕턴스를 줄여 사이즈를 축소시키는 방법은 입력 전류 리플을 크게 만드는 원인이 되어 입력 필터가 커져야 하는 문제가 발생하고, 반도체 소자에 흐르는 전류 최대값이 증가되어 반도체 소자의 소모 전력이 상승되고, 이로 인해 전력변화 효율이 저하되는 문제점이 있다. On the other hand, the method of reducing the inductance by reducing the size causes the input current ripple to be large, so that the input filter must be large, the maximum current flowing through the semiconductor element is increased, the power consumption of the semiconductor element is increased, This causes a problem that power conversion efficiency is lowered.

본 발명은 상기의 문제점을 해결하기 위해 안출된 것으로서, 본 발명의 목적은 입력 필터의 크기를 감소시키거나 입력 필터를 제거할 수 있도록, 정류 전류의 입력 전류 리플을 감소시키고 인덕터의 크기를 축소함으로써 제품 전체 크기를 축소시키고, 제품의 원가를 절감할 수 있는 역률 보상회로의 입력 전류 리플 저감 회로를 제공하고자 한다. SUMMARY OF THE INVENTION The present invention has been made to solve the above problems, and it is an object of the present invention to reduce input current ripple of a rectified current and reduce the size of an inductor so as to reduce the size of an input filter or remove an input filter An input current ripple reduction circuit of a power factor compensation circuit that can reduce the overall size of the product and reduce the cost of the product.

본 발명의 목적은 이상에서 언급한 목적으로 제한되지 않으며, 언급되지 않은 또 다른 목적들은 아래의 기재로부터 당업자에게 명확하게 이해될 수 있을 것이다. The objects of the present invention are not limited to the above-mentioned objects, and other objects not mentioned can be clearly understood by those skilled in the art from the following description.

전술한 목적을 달성하기 위한 본 발명의 일면에 따른 역률 보상회로의 입력 전류 리플 저감 회로는, 교류 전원을 입력받아 고전압 배터리 충전을 위한 직류 전원을 생성하는 차량 탑재형 충전기에 설치되는 입력전류 저감 회로에 있어서, 공급되는 교류 전원을 정류한 전류의 리플을 감소시켜 스위칭 소자에 전달하는 리플 감소부를 포함하여 이루어진 것을 특징으로 한다. According to an aspect of the present invention, there is provided an input current ripple reducing circuit for an input current reducing circuit, which is provided in an on-vehicle charger that receives an AC power and generates a DC power for charging a high- And a ripple reducing unit for reducing the ripple of the current rectified by the supplied AC power and transmitting the reduced ripple to the switching element.

본 발명의 일 실시예에 따르면, 리플 감소부가 정류 브릿지를 통해 전달되는 정류 전류의 리플을 감소시켜 스위칭 소자에 전달함으로써, 입력 전류 리플이 저감되는 효과가 있고, 역률 보상 부스트 컨버터의 인덕터 크기를 줄일 수 있게 됨에 따라 입력 필터를 축소/제거가 가능하여 제품 전체 크기가 축소되고 원가가 절감되는 효과가 있다. According to an embodiment of the present invention, the ripple reducing part reduces the ripple of the rectified current that is transmitted through the rectifying bridge, and transmits the reduced ripple to the switching element. Thus, the input current ripple is reduced, and the inductor size of the power factor- The input filter can be reduced / eliminated, thereby reducing the overall size of the product and reducing the cost.

본 발명의 일 실시예에서와 같이, 입력 전류 리플이 축소됨으로써, EMC(전자기파 적합성) 성능이 향상되고, 손실 전력이 감소하며, 발열이 개선되는 장점이 있다. As in the embodiment of the present invention, there is an advantage that the input current ripple is reduced, EMC (electromagnetic wave compatibility) performance is improved, loss power is reduced, and heat generation is improved.

도 1은 종래 부스트 컨버터를 이용한 역률 보상 회로를 도시한 도면.
도 2는 일반적인 입력 교류전원필터를 도시한 도면.
도 3은 본 발명의 일 실시예에 따른 역률 보상회로의 입력 전류 리플 저감 회로를 설명하기 위한 회도로.
도 4는 본 발명의 일 실시예와 종래 역률 보상 회로를 비교하기 위한 도면.
도 5는 도 4의 “Ⅴ” 확대도이다. BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a circuit diagram of a power factor correction circuit using a conventional boost converter. FIG.
Fig. 2 shows a general input AC power filter; Fig.
3 is a circuit diagram for explaining an input current ripple reducing circuit of a power factor correction circuit according to an embodiment of the present invention.
4 is a diagram for comparing an embodiment of the present invention with a conventional power factor correction circuit.
5 is an enlarged view of " V "

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 것이며, 단지 본 실시예들은 본 발명의 개시가 완전하도록 하며, 본 발명이 속하는 기술분야에서 통상의 지식을 가진 자에게 발명의 범주를 완전하게 알려주기 위해 제공되는 것이며, 본 발명은 청구항의 범주에 의해 정의될 뿐이다. 한편, 본 명세서에서 사용된 용어는 실시예들을 설명하기 위한 것이며 본 발명을 제한하고자 하는 것은 아니다. 본 명세서에서, 단수형은 문구에서 특별히 언급하지 않는 한 복수형도 포함한다. 명세서에서 사용되는 "포함한다(comprises)" 및/또는 "포함하는(comprising)"은 언급된 구성소자, 단계, 동작 및/또는 소자는 하나 이상의 다른 구성소자, 단계, 동작 및/또는 소자의 존재 또는 추가를 배제하지 않는다.BRIEF DESCRIPTION OF THE DRAWINGS The advantages and features of the present invention and the manner of achieving them will become apparent with reference to the embodiments described in detail below with reference to the accompanying drawings. The present invention may, however, be embodied in many different forms and should not be construed as being limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art. Is provided to fully convey the scope of the invention to those skilled in the art, and the invention is only defined by the scope of the claims. It is to be understood that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. In the present specification, the singular form includes plural forms unless otherwise specified in the specification. As used herein, the terms " comprises, " and / or " comprising " refer to the presence or absence of one or more other components, steps, operations, and / Or additions.

이하, 본 발명의 바람직한 실시예에 대하여 첨부한 도면을 참조하여 상세히 설명하기로 한다. 도 3에 도시된 바와 같이, 본 발명의 일 실시예에 따른 역률 보상회로의 입력 전류 리플 저감 회로는 전원 입력부(100), 정류 브릿지(200) 및 스위칭 소자(400)로 이루어진 차량 탑재형 충전기에 장착된다. Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. 3, the input current ripple reducing circuit of the power factor correction circuit according to the embodiment of the present invention includes a power source input unit 100, a rectifier bridge 200, and a switching device 400, Respectively.

전원 입력부(100)는 전원부에 연결되며, 전원부로부터 공급되는 전원을 정류 브릿지(200)에 공급하는 역할을 한다. The power input unit 100 is connected to the power supply unit and supplies power to the rectifier bridge 200 from the power supply unit.

그리고 정류 브릿지(200)는 상기 전원 입력부(100)를 통해 공급되는 교류 전원을 직류 전원으로 평활하는 역할을 한다. The rectifier bridge 200 smoothes the AC power supplied through the power input unit 100 into a DC power.

리플 감소부(300)는 정류 브릿지(200)를 통해 교류 전원을 정류한 전류의 리플을 감소시켜 스위칭 소자(400)에 전달할 수 있도록, 역률 보상 부스트 컨버터에서 발생하는 전류 리플을 감소시키는 역할을 한다. The ripple decreasing unit 300 reduces current ripple generated in the power factor compensated boost converter so that the ripple of the current rectified by the alternating current power source is reduced through the rectifier bridge 200 and is transmitted to the switching device 400 .

한편, 스위칭 소자(400)는 MOSFET, 다이오드 및 IGBT 등의 반도체 소자와 자성부품인 인덕터와 변압기로 이루어져, 상기 정류 브릿지(200)를 통해 정류된 전원을 승압하는 역할을 한다. 이러한 스위칭 소자(400)는 공지의 기술로서 그 세부적인 설명은 생략하기로 한다. The switching device 400 includes a semiconductor device such as a MOSFET, a diode, and an IGBT, and an inductor and a transformer, which are magnetic parts, and functions to boost a rectified power through the rectifying bridge 200. The switching element 400 is a well-known technique, and a detailed description thereof will be omitted.

이와 같이, 본 발명의 일 실시예에 따르면, 리플 감소부(300)가 정류 브릿지(200)를 통해 전달되는 정류 전류의 리플을 감소시켜 스위칭 소자(400)에 전달함으로써, 입력필터 축소 또는 제거가 가능하고, 입력 전류 리플이 저감되는 효과로 역률 보상 부스트 컨버터의 인덕터 크기를 줄일 수 있다. 이로 인해, 제품 전체 크기가 축소되고 원가가 절감되는 장점이 있다. As described above, according to the embodiment of the present invention, the ripple reducing unit 300 reduces the ripple of the rectified current transmitted through the rectifying bridge 200 and transmits the reduced ripple to the switching device 400, And the input current ripple is reduced, so that the inductor size of the power factor compensation boost converter can be reduced. As a result, the overall size of the product is reduced and the cost is reduced.

또한, 본 발명의 일 실시예에서와 같이, 입력 전류 리플이 축소됨으로써, EMC(전자기파 적합성) 성능이 향상되고, 손실 전력이 감소하며, 발열이 개선되는 장점이 있다. Further, as in the embodiment of the present invention, there is an advantage that the input current ripple is reduced, thereby improving EMC (electromagnetic wave compatibility) performance, reducing power loss, and improving heat generation.

본 발명의 일 실시예에 채용된 리플 감소부(300)는, 정류 브릿지(200)에 자화 인덕터(311)가 포함된 변압기(310)가 연결되고, 상기 변압기(310)의 2차 (-) 극단이 노이즈 필터 콘덴서(330)에 연결되며, 상기 변압기(310)의 2차 (+) 극단이 스위칭 소자(400)에 연결된다. The ripple reducing unit 300 employed in the embodiment of the present invention is constructed such that a transformer 310 including a magnetizing inductor 311 is connected to a rectifying bridge 200 and a secondary (+) Terminal of the transformer 310 is connected to the switching element 400. The switching element 400 is connected to the negative (+) terminal of the transformer 310,

그리고 노이즈 필터 콘덴서(330)는 상기 리플 감소부(300)를 통해 감소된 정류 전류의 리플을 제거 한다. The noise filter capacitor 330 removes the ripple of the reduced rectified current through the ripple reduction unit 300.

이러한 본 발명의 일 실시예는, 하기의 [수학식 1]에서와 같이 입력 전류(iin)는 변압기(310)의 턴비에 의해 전류 량이 감소하게 되고, 턴비에 의해 전류의 리플율 또한 감소하며, 노이즈 필터 콘덴서(330)가 전류의 리플을 흡수하고, 나머지 전류(iLin)는 스위칭 소자(400)의 인덕턴스(Lin)에 입력된다. In this embodiment of the present invention, the input current iin is decreased by the turn ratio of the transformer 310, the ripple rate of the current is decreased by the turn ratio, The noise filter capacitor 330 absorbs the ripple of the current and the remaining current i Lin is input to the inductance L in of the switching device 400. [

[수학식 1] [Equation 1]

Figure pat00001
Figure pat00001

여기서, iin은 입력전류, iCS는 변압기(310)측 1차 전류이고, iLc는 자화 인덕턴스(310)의 전류이며, Icp는 필터로 들어가는 전류이고, Nc는 변압기(310)의 턴비이며, Iin은 기본파(60hz의 전류)이고, iLin은 스위칭 소자로 입력되는 전류이다. Here, i in is the input current, i CS is a transformer (310) side of the primary current, i Lc is the current in the magnetizing inductance 310, I cp is the current entering the filter, Nc is a turns ratio of the transformer (310) I in is the fundamental wave (current of 60 Hz), and i Lin is the current input to the switching element.

[수학식 2]&Quot; (2) "

Figure pat00002
Figure pat00002

여기서, iin은 입력전류, iCS는 변압기(310)측 1차 전류이고, iLc는 자화 인덕턴스(310)의 전류이며, Icp는 필터로 들어가는 전류이고, Nc는 변압기(310)의 턴비이며, Iin은 기본파(60hz의 전류)이고, iLin은 스위칭 소자로 입력되는 전류이다. Here, i in is the input current, i CS is a transformer (310) side of the primary current, i Lc is the current in the magnetizing inductance 310, I cp is the current entering the filter, Nc is a turns ratio of the transformer (310) I in is the fundamental wave (current of 60 Hz), and i Lin is the current input to the switching element.

이와 같이, 상기 [수학식 1]과 [수학식 2]를 통해 입력 전류의 리플이 1/(1+Nc)배 감소하는 것을 알 수 있다. Thus, it can be seen that the ripple of the input current decreases by 1 / (1 + Nc) times through the above-described equations (1) and (2).

이러한 본 발명의 일 실시예에 따른 역률 보상회로의 입력 전류 리플 저감 회로는 입력전압(Vin) 220Vac, 출력전압 및 출력 전력(Vo/Po) 400Vdc/5kW, 입력 인덕터(Lin) 150uH, RAC 트랜스포머 턴비, 자화인덕턴스 10:1, 5uH, RAC용 필름 캐패시터 3.3uF, 동작 방법 CCM(전류 연속 모드)으로 동작하는 시물레이션 툴을 이용하여 검증할 수 있다. The input current ripple reduction circuit of the power factor correction circuit according to an embodiment of the present invention includes an input voltage V in of 220 V ac, an output voltage Vo / Po of 400 Vdc / 5 kW, an input inductor Lin of 150 uH, Turn ratio, magnetization inductance 10: 1, 5uH, RAC film capacitor 3.3uF, operation method It can be verified by simulation tool which operates in CCM (current continuous mode).

즉, 도 1에 도시된 바와 같은 종래 부스트 컨버터를 이용한 역률 보상 회로의 전류 리플(r)은 도 4 및 도 5에 도시된 바와 같이 일정 크기의 진폭을 가지고 있는데 반해, 본 발명의 부스트 컨버터를 이용한 역률 보상 회로의 전류 리플(R)은 도 4 및 도 5에 도시된 바와 같이 종래 전류 리플과 대비하여 1/10 정도인 것을 알 수 있다. That is, the current ripple (r) of the power factor correction circuit using the conventional boost converter as shown in FIG. 1 has an amplitude of a predetermined magnitude as shown in FIGS. 4 and 5, As shown in FIGS. 4 and 5, the current ripple R of the power factor correction circuit is about 1/10 of that of the conventional current ripple.

따라서, 본 발명에 따르면, 입력 전류 리플이 종래 대비 10% 수준으로 축소될 수 있고, 이로 인해 역률 보상 부스트 컨버터에 이용되는 인덕터 크기를 줄일 수 있고, 입력 필터를 축소하거나 제거할 수 있는 효과가 있다. Therefore, according to the present invention, the input current ripple can be reduced to about 10% of the conventional level, thereby reducing the size of the inductor used in the power factor compensation boost converter and reducing or eliminating the input filter .

즉, 도 2의 종래 입력 교류 전원 필터회로(40) 장착 시에는 11개의 소자가 필요한데 반해, 본 발명의 경우 2개의 소자만으로도 종래 필터 회로와 동일한 기능을 제공할 수 있게 됨에 따라, 제품의 크기를 축소하거나 원가를 절감할 수 있는 효과가 있다. That is, 11 elements are required when the conventional input AC power supply filter circuit 40 shown in FIG. 2 is installed. In the present invention, however, the same function as that of the conventional filter circuit can be provided with only two elements, And the cost can be reduced.

또한, 본 발명의 일 실시예에 따르면, 입력 전류 리플이 축소됨으로써, 종래에서와 같이 입력 교류전원 필터가 장착되지 않아도 되며, 제품의 자작 공정이 단순화되는 장점이 있다. Also, according to the embodiment of the present invention, the input current ripple is reduced, so that the input AC power filter does not need to be mounted as in the prior art, and the process of the product itself is simplified.

이상, 본 발명의 구성에 대하여 첨부 도면을 참조하여 상세히 설명하였으나, 이는 예시에 불과한 것으로서, 본 발명이 속하는 기술분야에 통상의 지식을 가진자라면 본 발명의 기술적 사상의 범위 내에서 다양한 변형과 변경이 가능함은 물론이다. 따라서 본 발명의 보호 범위는 전술한 실시예에 국한되어서는 아니되며 이하의 특허청구범위의 기재에 의하여 정해져야 할 것이다.While the present invention has been described in detail with reference to the accompanying drawings, it is to be understood that the invention is not limited to the above-described embodiments. Those skilled in the art will appreciate that various modifications, Of course, this is possible. Accordingly, the scope of protection of the present invention should not be limited to the above-described embodiments, but should be determined by the description of the following claims.

100 : 전원 입력부 200 : 정류 브릿지
300 : 리플 감소부 310 : 변압기
330 : 노이즈 필터 콘덴서 400 : 스위칭 소자 100: power input unit 200: rectifier bridge
300: ripple reduction part 310: transformer
330: Noise filter capacitor 400: Switching element

Claims (5)

입력전류 리플 저감 회로에 있어서,
공급되는 교류 전원을 정류한 전류의 리플을 감소시켜 스위칭 소자에 전달할 수 있도록, 정류된 교류 전원의 전류 감소를 통해 전류의 리플을 감소시키는 리플 감소부; 및
상기 리플 감소부를 통해 감소된 전류의 리플을 제거하는 노이즈 필터 콘덴서;를 포함하여 이루어진 것을 특징으로 하는 역률 보상회로의 입력 전류 리플 저감 회로.
In the input current ripple reducing circuit,
A ripple reducing unit for reducing the ripple of the current through reduction of the current of the rectified AC power source so that the ripple of the rectified current can be reduced and transmitted to the switching element; And
And a noise filter capacitor for removing the ripple of the current reduced through the ripple reducing unit.
제1항에 있어서,
상기 리플 감소부는,
정류 브릿지에 자화 인덕터를 구비한 변압기가 연결되고, 상기 변압기에 상기 노이즈 필터 콘덴서가 연결되며, 상기 변압기에 스위칭 소자가 연결되는 것인 역률 보상회로의 입력 전류 리플 저감 회로.
The method according to claim 1,
The ripple-
Wherein the rectifier bridge is connected to a transformer having a magnetizing inductor, the noise filter capacitor is connected to the transformer, and a switching element is connected to the transformer.
제 2항에 있어서,
상기 자화 인턱터를 구비한 변압기는,
자화 인덕터와의 턴비를 통해 입력 전류의 리플을 감소시키는 것인 역률 보상회로의 입력 전류 리플 저감 회로.
3. The method of claim 2,
Wherein the transformer having the magnetizing inductor comprises:
The input current ripple reduction circuit of the power factor correction circuit reduces the ripple of the input current through the turn ratio with the magnetizing inductor.
제 1항에 있어서,
상기 리플 감소부에는,
상기 공급되는 교류 전원이 정류된 후 전류의 리플을 감소된 전원을 승압하는 스위칭 소자가 더 구비된 역률 보상회로의 입력 전류 리플 저감 회로.
The method according to claim 1,
In the ripple reducing portion,
Further comprising a switching device for stepping up a power supply whose current ripple is reduced after the supplied AC power is rectified.
제 1항의 입력 전류 리플 저감 회로를 포함하는 차량 탑재형 충전기.
An on-vehicle charger comprising the input current ripple reduction circuit of claim 1.
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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20020074245A (en) * 2001-03-19 2002-09-30 주식회사 파웰 High efficiency soft-switching AC-DC boost converter using coupled inductor and energy recovery circuit having power factor correction function
US20050024056A1 (en) * 2003-08-01 2005-02-03 Sabate Juan Antonio Methods and apparatus for switching frequency ripple reduction in coils
JP2005086958A (en) * 2003-09-11 2005-03-31 Yokogawa Electric Corp Switching power supply
KR20160046416A (en) * 2014-10-20 2016-04-29 현대자동차주식회사 Noise compensation circuit

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20020074245A (en) * 2001-03-19 2002-09-30 주식회사 파웰 High efficiency soft-switching AC-DC boost converter using coupled inductor and energy recovery circuit having power factor correction function
US20050024056A1 (en) * 2003-08-01 2005-02-03 Sabate Juan Antonio Methods and apparatus for switching frequency ripple reduction in coils
JP2005086958A (en) * 2003-09-11 2005-03-31 Yokogawa Electric Corp Switching power supply
KR20160046416A (en) * 2014-10-20 2016-04-29 현대자동차주식회사 Noise compensation circuit

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