TWI802110B - Balance device to reduce leakage current - Google Patents

Balance device to reduce leakage current Download PDF

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TWI802110B
TWI802110B TW110144153A TW110144153A TWI802110B TW I802110 B TWI802110 B TW I802110B TW 110144153 A TW110144153 A TW 110144153A TW 110144153 A TW110144153 A TW 110144153A TW I802110 B TWI802110 B TW I802110B
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coil
current
balance
load
magnetic field
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TW202312638A (en
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陳洛麟
金志烘
金善永
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紘嘉電子股份有限公司
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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F27/00—Details of transformers or inductances, in general
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F27/00—Details of transformers or inductances, in general
    • H01F27/28—Coils; Windings; Conductive connections
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F27/00—Details of transformers or inductances, in general
    • H01F27/34—Special means for preventing or reducing unwanted electric or magnetic effects, e.g. no-load losses, reactive currents, harmonics, oscillations, leakage fields
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H3/00—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection
    • H02H3/16—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to fault current to earth, frame or mass
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H3/00—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection
    • H02H3/26—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to difference between voltages or between currents; responsive to phase angle between voltages or between currents

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Charge And Discharge Circuits For Batteries Or The Like (AREA)
  • Breakers (AREA)
  • Control Of Electrical Variables (AREA)
  • Silver Salt Photography Or Processing Solution Therefor (AREA)
  • Emergency Protection Circuit Devices (AREA)
  • Testing Of Short-Circuits, Discontinuities, Leakage, Or Incorrect Line Connections (AREA)
  • Control Of Voltage And Current In General (AREA)

Abstract

一種減少洩漏電流之平衡裝置，包括：一設置於預設負載及電源端之間的平衡線圈模組，以及一控制模組；該平衡線圈模組具有第一線圈、第二線圈、第三線圈，該第一線圈、第二線圈分別連結於該負載之二端，該第三線圈連結於該控制模組，該第一線圈能受到一由電源端往該負載方向的供給電流通過而產生一個正向磁場，該第二線圈能受到一由負載往電源端方向的回歸電流通過而產生一個反向磁場，該控制模組能偵測並計算該供給電流與回歸電流之間的差異，並控制該第三線圈產生一個可以彌補該正向磁場與反向磁場之間差距的補償磁場，藉以使該平衡線圈模組內部的磁場及電流維持平衡狀態，達到降低漏觸電流及維持基本供電之功效。A balance device for reducing leakage current, comprising: a balance coil module set between a preset load and a power supply terminal, and a control module; the balance coil module has a first coil, a second coil, and a third coil , the first coil and the second coil are respectively connected to the two ends of the load, the third coil is connected to the control module, and the first coil can receive a supply current from the power supply end to the load direction to generate a Forward magnetic field, the second coil can receive a return current from the load to the direction of the power supply to generate a reverse magnetic field, the control module can detect and calculate the difference between the supply current and the return current, and control The third coil generates a compensating magnetic field that can bridge the gap between the forward magnetic field and the reverse magnetic field, so as to keep the magnetic field and current inside the balance coil module in a balanced state, so as to reduce the leakage current and maintain the basic power supply .

Description

減少洩漏電流之平衡裝置Balance device to reduce leakage current

本發明是有關減少洩漏電流之平衡裝置，尤指一種在電器設備淹水或人體觸電時，可有效降低漏(觸)電流，並維持對電器設備供電，以確保人員安全及維持電器設備基本運作之平衡裝置。 The present invention relates to a balance device for reducing leakage current, especially a device that can effectively reduce leakage (touch) current and maintain power supply to electrical equipment when electrical equipment is flooded or human body gets an electric shock, so as to ensure the safety of personnel and maintain the basic operation of electrical equipment The balance device.

隨著各種電器及電子裝置的逐漸普及化，人們對於各種用電需求亦不斷增加，在大多數(家庭或工業)的用電環境中，市電乃為一種穩定且便利的電力來源，而目前的市電供應皆係由發電廠經由電線高壓傳輸後，再經變壓至各種固定規格的電壓，以供不同終端消費者依需求經由電線連結至電器及電子裝置；然而，在一般的生活環境及用電過程中，往往會遇到許多天災或人為疏失，造成各種漏(觸)電情形發生。 With the gradual popularization of various electrical appliances and electronic devices, people's demand for various electricity consumption is also increasing. In most (household or industrial) electricity consumption environments, the mains power is a stable and convenient source of electricity, and the current The mains power supply is transmitted by the power plant through high-voltage wires, and then transformed to various fixed voltages for different end consumers to connect to electrical appliances and electronic devices through wires according to their needs; however, in general living environments and users During the electrical process, many natural disasters or human errors are often encountered, resulting in various leakage (shock) situations.

眾所周知，當電器設備浸水時，可能會由接電部(電器設備之插頭連接電源插座的部位或導入電源之電線裸露部位)往大地產生漏電流，或者當人體接觸到該外露的接電部時，會由接電部透過人體往大地產生電流，此種漏電流往往會造成使用人員的人體傷害及相關電器設備的損壞，因此目前大多數的輸配電或供電設備中會配置漏電斷路開關，可在供電線路或電器設備、電子裝置發生漏電時立即切斷與電源的連結，以達到保護人員及電器設備的用電安全；然而，上述漏電斷路開關其僅能於漏電情形發生後切斷電源，並不具有 降低或消除漏電流的功能，再者，許多電器設備(例如：維持生命之醫療設備或儲存資料之電腦設備)並不允許隨時斷電，任何非預期的斷電皆會造成生命及經濟上的嚴重損失。 As we all know, when electrical equipment is immersed in water, leakage current may be generated from the power connection part (the part where the plug of the electrical equipment is connected to the power socket or the exposed part of the wire leading into the power supply) to the earth, or when the human body touches the exposed power connection part , will generate current through the human body to the earth from the power connection part. This kind of leakage current will often cause human injury to the user and damage to related electrical equipment. Therefore, most current transmission and distribution or power supply equipment will be equipped with a leakage circuit breaker switch. Immediately cut off the connection with the power supply when a leakage occurs in the power supply line or electrical equipment or electronic device, so as to protect the safety of personnel and electrical equipment; however, the above-mentioned leakage circuit breaker can only cut off the power supply after the leakage occurs. does not have The function of reducing or eliminating leakage current. Moreover, many electrical equipment (such as: life-supporting medical equipment or computer equipment for storing data) do not allow power-off at any time. Any unexpected power-off will cause life and economic loss. serious loss.

因此，在韓國登記專利10-2270589號專利案中提供一種防電氣事故的安全裝置，依據該專利所揭露的內容，在電器線路浸水的情況之下，該安全裝置可以預防觸電事故之外，亦可對於電氣設備持續供應最低所需電力，讓電氣設備持續正常運轉。 Therefore, a safety device for preventing electrical accidents is provided in Korean Registered Patent No. 10-2270589. According to the content disclosed in the patent, in the case of electrical circuit immersion, the safety device can prevent electric shock accidents and also It can continuously supply the minimum required power to the electrical equipment, so that the electrical equipment can continue to operate normally.

除此之外，韓國登記專利10-1705090號專利案中揭露了具有接地斷線感測裝置及電源保護裝置等結構；而韓國登記專利10-2181899號專利案中公開了淹水時的防漏電裝置及使用該防漏電裝置的漏電和觸電保護方法，雖然在其說明書中記載著「發生觸電事故時，透過一平衡變壓器可以抵銷洩漏電流所產生的磁場之後，讓洩漏電流的強度可以降低到對於人體不會造成危險的程度」，然而在其專利說明書中只有提交負載和串聯連接關係的簡易圖式，因此該領域的一般技術人員無法直接由該專利所揭露的內容執行相關技術手段，更不知道該專利內容能否實際動作，即使依照該專利之內容能正常運作，也因為該正常運作的時間點落在接電部已被淹水或人體已被觸電之後的時刻，所以無法適當地預防觸電事故。 In addition, Korean registered patent No. 10-1705090 discloses structures with grounding disconnection sensing devices and power protection devices; device and the leakage and electric shock protection method using the leakage prevention device, although it is recorded in its instruction manual that "when an electric shock accident occurs, after a balance transformer can offset the magnetic field generated by the leakage current, the intensity of the leakage current can be reduced to To the extent that it does not cause danger to the human body”, however, in its patent specification, there is only a simple diagram of the relationship between load and series connection, so ordinary technical personnel in this field cannot directly implement the relevant technical means from the content disclosed in the patent, let alone I don't know whether the content of the patent can actually work. Even if it can operate normally according to the content of the patent, it is impossible to properly operate because the time point of the normal operation falls after the electrical connection part has been flooded or the human body has been electrocuted. Prevent electric shock accidents.

再者，上述洩漏電流大小係依照該接電部和大地之間所形成的線路狀態(包括人體等)而有所變化，因此在平衡變壓器之正向(由電源的電線流至負載方向)線圈上所流動的電流和逆向(由負載回流至電源的電線方向)線圈所流動的電流都會產生變化，其結果在流動正向電流的線圈和流動逆向電流的線圈上所產生的磁場大小互相不同，導致無法確實維持電流之間的平衡。 而且由於經過外露的接電部流向大地的電流會增加，所以無法適當地應付處理觸電事故。 Furthermore, the magnitude of the above-mentioned leakage current varies according to the state of the line formed between the power connection part and the earth (including the human body, etc.). Both the current flowing on the coil and the current flowing in the reverse direction (from the load back to the power supply) coil will change. As a result, the magnitude of the magnetic field generated on the coil flowing forward current and the coil flowing reverse current will be different from each other. As a result, the balance between currents cannot be reliably maintained. Furthermore, since the electric current flowing to the earth through the exposed contact part increases, it is impossible to properly deal with electric shock accidents.

另外，在韓國登記專利10-0749837號專利案中揭露了一種平衡變壓器，該平衡變壓器可以讓並聯方式連接之負載上所流動的電流調整為均勻狀態。從理論來說，在該專利中有提到一種「透過逆向連接的線圈以維持流動的電流之平衡」的方法，但該方法只是一種讓流動在並聯負載上的電流可以維持平衡狀態的理論而已；換句話說，該理論與可防止由外露之接電部流向大地的電流所造成的觸電事故完全無關。 In addition, Korean Registered Patent No. 10-0749837 discloses a balance transformer, which can adjust the current flowing on loads connected in parallel to a uniform state. Theoretically speaking, the patent mentions a method of "maintaining the balance of the flowing current through reversely connected coils", but this method is only a theory that allows the current flowing on the parallel load to maintain a balanced state. ; In other words, this theory has nothing to do with preventing electric shock accidents caused by the current flowing from the exposed contact part to the earth.

由於上述漏(觸)電過程中，在接電部和負載、大地之間會形成多種不同的電流路徑之外，依照各種條件(例如：淹水條件、接電部和大地之間的條件、整體電路接地條件等)差異，在電流路徑上所產生的電阻值(以下簡稱"漏洩負載")也會產生變化；因此，如何能因應不同漏(觸)電條件差異而產生相同減少漏(觸)電流的效果，並可維持對相關電器設備持續供電以避免失能，乃為相關業者所亟待努力之課題。 Due to the above-mentioned leakage (shock) process, in addition to forming a variety of different current paths between the power connection part, the load and the earth, according to various conditions (such as: flooding conditions, conditions between the power connection part and the earth, overall circuit grounding conditions, etc.), the resistance value generated on the current path (hereinafter referred to as "leakage load") will also change; therefore, how to reduce the leakage (touch) ) current, and can maintain continuous power supply to related electrical equipment to avoid failure, which is an urgent issue for relevant industry players.

有鑑於習見之減少漏電或防止觸電的裝置於實際應用時有上述缺點，發明人乃針對該些缺點研究改進之道，終於有本發明產生。 In view of the above-mentioned shortcomings in the actual application of conventional devices for reducing electric leakage or preventing electric shocks, the inventors have studied and improved ways to address these shortcomings, and finally have the present invention.

本發明之主要目的在於提供一種減少洩漏電流之平衡裝置，其包括：一設置於預設負載及電源端之間的平衡線圈模組，以及一控制模組；該平衡線圈模組具有第一線圈、第二線圈、第三線圈；其中該第一線圈、第二線圈分別串聯於該負載之二端，該第三線圈連結於該控制模組，該第一線圈能受到 一由電源端往該負載方向流動的供給電流通過而產生一個正向磁場，該第二線圈能受到一由負載往電源端方向流動的回歸電流通過而產生一個反向磁場，該控制模組能偵測並計算該供給電流與回歸電流之間的差異，並控制該第三線圈產生一個可以補償該供給電流與回歸電流之間差距的補償磁場，藉以使該平衡線圈模組內部之磁場保持一平衡狀態，達到減少上述漏電流、確實保護人命安全之功效。 The main purpose of the present invention is to provide a balance device for reducing leakage current, which includes: a balance coil module set between a preset load and a power supply terminal, and a control module; the balance coil module has a first coil , the second coil, and the third coil; wherein the first coil and the second coil are respectively connected in series with the two ends of the load, the third coil is connected to the control module, and the first coil can be subjected to A supply current flowing from the power supply terminal to the load direction passes through to generate a positive magnetic field. The second coil can receive a return current flowing from the load to the power supply terminal to generate a reverse magnetic field. The control module can Detect and calculate the difference between the supply current and the return current, and control the third coil to generate a compensation magnetic field that can compensate the difference between the supply current and the return current, so as to maintain the magnetic field inside the balance coil module In a balanced state, the effect of reducing the above-mentioned leakage current and truly protecting human life is achieved.

本發明之另一目的在於提供一種減少洩漏電流之平衡裝置，其由於該平衡線圈模組之第三線圈係依需要而可配合該第一線圈或第二線圈形成互動，可使該平衡線圈模組內部之磁場接***衡，進而將上述漏電流的強度降到最低的狀態，以達到使漏電或觸電之危險最輕微化之功效。 Another object of the present invention is to provide a balance device that reduces leakage current. Since the third coil of the balance coil module can cooperate with the first coil or the second coil to form an interaction as required, the balance coil module can The magnetic field inside the group is close to balance, and then the strength of the above-mentioned leakage current is reduced to the lowest state, so as to achieve the effect of minimizing the risk of leakage or electric shock.

本發明之又一目的在於提供一種減少洩漏電流之平衡裝置，其於該平衡線圈模組中各線圈進行互動的過程中，可同時對該負載提供最基本的電力供應，以確保該負載能維持基本正常的運作，進而可避免非預期斷電造成生命安全或經濟的損失。 Another object of the present invention is to provide a balance device for reducing leakage current, which can provide the most basic power supply to the load at the same time during the interaction of the coils in the balance coil module to ensure that the load can maintain Basic normal operation, thereby avoiding life safety or economic losses caused by unexpected power outages.

為達成上述目的及功效，本發明所採行的技術手段包括：一種減少洩漏電流之平衡線圈模組，包括：一設置於預設負載及電源端之間的平衡線圈模組；該平衡線圈模組具有第一線圈、第二線圈、第三線圈；其中該第一線圈、第二線圈分別連結於該負載之二端，該第一線圈能流通由電源端往該負載方向流動的供給電流，而產生一個正向磁場，該第二線圈能流通由負載往電源端方向流動的回歸電流，而產生一個反向磁場，該第三線圈能夠被提供一電流，以產生一個可以彌補該正向磁場與反向磁場之間差距的補償磁場。 In order to achieve the above purpose and effect, the technical means adopted by the present invention include: a balance coil module for reducing leakage current, including: a balance coil module arranged between a preset load and a power supply terminal; the balance coil module The group has a first coil, a second coil, and a third coil; wherein the first coil and the second coil are respectively connected to the two ends of the load, and the first coil can flow the supply current flowing from the power supply end to the load direction, To generate a positive magnetic field, the second coil can flow a return current flowing from the load to the power supply end, thereby generating a reverse magnetic field, and the third coil can be supplied with a current to generate a positive magnetic field that can compensate The compensating magnetic field for the gap with the opposing magnetic field.

本發明所採行的技術手段另包括：一種利用上述之平衡線圈模組所構成的減少洩漏電流之平衡裝置，其中該平衡線圈模組之該第一線圈、第二 線圈分別連結於該負載之二端，而該第三線圈連結於一控制模組，該第一線圈能受到一由該電源端往該負載方向流動的供給電流通過，而產生一個正向磁場，該第二線圈能受到一由該負載往該電源端方向流動的回歸電流通過，而產生一個反向磁場，該控制模組能偵測並計算該供給電流與回歸電流之間的差值，並控制一電流通過該第三線圈，藉以產生一個可以彌補該正向磁場與反向磁場之間差距的補償磁場。 The technical means adopted by the present invention also includes: a balance device for reducing leakage current formed by the above-mentioned balance coil module, wherein the first coil, the second coil of the balance coil module The coils are respectively connected to the two ends of the load, and the third coil is connected to a control module. The first coil can receive a supply current flowing from the power supply end to the load direction to generate a positive magnetic field. The second coil can receive a return current flowing from the load to the power terminal to generate a reverse magnetic field. The control module can detect and calculate the difference between the supply current and the return current, and A current is controlled to pass through the third coil, so as to generate a compensating magnetic field that can make up the difference between the forward magnetic field and the reverse magnetic field.

依上述結構，其中該控制模組具有一供給電流感測部及一回歸電流感測部，分別設置於該負載的二端；該控制模組係能分別感測通過該供給電流感測部之該供給電流的大小，以及通過該回歸電流感測部之該回歸電流的大小，再計算出該供給電流與回歸電流之間的大小差異之後，以控制通過該第三線圈的電流。 According to the above structure, the control module has a supply current sensing part and a return current sensing part, which are respectively arranged at the two ends of the load; the control module can respectively sense the current passing through the supply current sensing part The magnitude of the supply current and the magnitude of the return current passing through the return current sensing part are calculated to control the current passing through the third coil after calculating the magnitude difference between the supply current and the return current.

依上述結構，其中該控制模組係能輸出一控制電流至該第三線圈，藉以使該第三線圈產生該補償磁場。 According to the above structure, the control module can output a control current to the third coil, so as to make the third coil generate the compensation magnetic field.

依上述結構，其中該控制模組係將該控制電流之方向控制調整到與通過該第一線圈之供給電流方向一致的狀態。 According to the above structure, the control module adjusts the direction control of the control current to be consistent with the direction of the supply current passing through the first coil.

依上述結構，其中該控制模組係將該控制電流之方向控制調整到與通過該第二線圈之回歸電流方向一致的狀態。 According to the above structure, the control module adjusts the direction of the control current to be consistent with the direction of the return current passing through the second coil.

依上述結構，其中該第三線圈係分別連結於該電源端，該控制模組包括一設於該第三線圈與該電源端之間的切換開關組，當該控制模組操作該切換開關組導通該第三線圈與該電源端，能使該第三線圈通電產生該補償磁場。 According to the above structure, wherein the third coils are respectively connected to the power supply terminals, the control module includes a switch group arranged between the third coil and the power supply terminals, when the control module operates the switch group Conducting the third coil and the power supply terminal can make the third coil energized to generate the compensation magnetic field.

依上述結構，其中第一線圈之匝數：第二線圈之匝數：第三線圈之匝數=1：1：2。 According to the above structure, the number of turns of the first coil: the number of turns of the second coil: the number of turns of the third coil = 1:1:2.

依上述結構，其中該第三線圈具有一中間抽頭，能將該第三線圈均分為二相同匝數之線圈，且該切換開關組包括第一切換開關及第二切換開關，該第一切換開關係設置於該第三線圈一端與該電源端之間，該第二切換開關係設置於該中間抽頭與該電源端之間。 According to the above structure, wherein the third coil has an intermediate tap, the third coil can be equally divided into two coils with the same number of turns, and the switch group includes a first switch and a second switch, the first switch The switch relationship is arranged between one end of the third coil and the power supply end, and the second switching switch relationship is arranged between the middle tap and the power supply end.

依上述結構，其中第一線圈之匝數：第二線圈之匝數：第三線圈之匝數=1：1：1。 According to the above structure, the number of turns of the first coil: the number of turns of the second coil: the number of turns of the third coil = 1:1:1.

依上述結構，其中該切換開關組另包括一斷電開關，該斷電開關係設置於該平衡線圈模組與該電源端之間。 According to the above structure, the switching switch group further includes a power-off switch, and the power-off switch is arranged between the balance coil module and the power supply terminal.

為使本發明的上述目的、功效及特徵可獲致更具體的瞭解，茲依下列附圖說明如下： In order to obtain a more specific understanding of the above-mentioned purpose, effect and characteristics of the present invention, the following drawings are hereby described as follows:

10:平衡線圈模組 10: Balance coil module

20:控制模組 20: Control module

21:供給電流感測部 21: Supply current sensing unit

22:回歸電流感測部 22: Return current sensing part

23:切換開關組 23: switch group

231:第一切換開關 231: The first toggle switch

232:第二切換開關 232: Second toggle switch

24:斷電開關 24:Power off switch

25:插座 25: socket

100:減少洩漏電流之平衡裝置 100: Balance device to reduce leakage current

200:負載 200: load

300:漏洩負載電路 300: Leakage load circuit

DI:電源端子與觸電位置之間的距離 DI: the distance between the power terminal and the electric shock position

DO:接地端子與觸電位置之間的距離 DO: the distance between the ground terminal and the electric shock location

Ls、Lt、Lp:漏電感 Ls, Lt, Lp: leakage inductance

Lm:磁化電感 Lm: magnetizing inductance

IB:漏電流 IB: leakage current

IC:控制電流 IC: Control Current

IL:負載電流 IL: load current

Iin:供給電流 Iin: supply current

Iout:回歸電流 Iout: return current

N1:第一線圈 N1: the first coil

N2:第二線圈 N2: second coil

N3:第三線圈 N3: the third coil

N11:第一端 N11: first end

N12:第二端 N12: second end

N21:第三端 N21: third end

N22:第四端 N22: the fourth terminal

N31:中間抽頭 N31: Center tap

NS、N:接地端子 NS, N: Ground terminal

PS、R、S、T:電源端子 PS, R, S, T: Power terminals

R1、R2、R3、Rbody:電阻 R1, R2, R3, Rbody: resistance

Rs、Rt、Rp:內部電阻 Rs, Rt, Rp: internal resistance

S:觸電位置 S: electric shock position

VC:控制電壓 VC: control voltage

Vin:電源端 Vin: power terminal

第1圖係本發明第一實施例之完整電路方塊圖。 Fig. 1 is a complete circuit block diagram of the first embodiment of the present invention.

第2圖係第1圖之電路方塊於特定元件數值時的模擬等效電路圖。 Figure 2 is an analog equivalent circuit diagram of the circuit block in Figure 1 at specific component values.

第3圖係第2圖之電路結構中，未設置平衡線圈模組且在漏洩負載電路連接於負載(非正常狀態)時的負載電流及漏電流比對圖。 Fig. 3 is a comparison diagram of load current and leakage current when no balance coil module is installed in the circuit structure of Fig. 2 and the leakage load circuit is connected to the load (abnormal state).

第4圖係第2圖之電路結構中，控制模組未驅動平衡線圈模組動作且在漏洩負載電路連接於負載(非正常狀態)時的負載電流及漏電流比對圖。 Fig. 4 is a comparison diagram of load current and leakage current when the control module does not drive the balance coil module in the circuit structure of Fig. 2 and the leakage load circuit is connected to the load (abnormal state).

第5圖係第2圖之電路結構中，控制模組驅動平衡線圈模組動作前、後的負載電流及漏電流比對圖。 Figure 5 is a comparison diagram of the load current and leakage current before and after the control module drives the balance coil module in the circuit structure of Figure 2.

第6圖係本發明第一實施例應用於三相四線式電源及負載之間的實施例圖。 Fig. 6 is an embodiment diagram of the first embodiment of the present invention applied between a three-phase four-wire power supply and a load.

第7圖係本發明第一實施例應用於三相三線式電源及負載之間的實施例圖。 Fig. 7 is an embodiment diagram of the first embodiment of the present invention applied between a three-phase three-wire power supply and a load.

第8圖係本發明第一實施例之一應用情形示意圖。 Fig. 8 is a schematic diagram of an application situation of the first embodiment of the present invention.

第9圖係本發明第二實施例之電路方塊圖。 Fig. 9 is a circuit block diagram of the second embodiment of the present invention.

第10圖係本發明第三實施例之電路方塊圖。 Fig. 10 is a circuit block diagram of the third embodiment of the present invention.

第11圖係本發明第四實施例之電路方塊圖。 Fig. 11 is a circuit block diagram of the fourth embodiment of the present invention.

請參第1至2圖所示，可知本發明第一實施例之減少洩漏電流之平衡裝置100主要結構包括：平衡線圈模組10及控制模組20等部份；其中該平衡線圈模組10係設置於一負載200及電源端Vin之間，該平衡線圈模組10具有第一線圈N1、第二線圈N2、第三線圈N3，該第一線圈N1一端具有一第一端N11，連接於該電源端Vin供電之電源端子PS，該第一線圈N1另一端具有一第二端N12，連接於該負載200之一端，該第二線圈N2一端具有一第四端N22，連接於該電源端Vin之接地端子NS，該第二線圈N2另一端具有一第三端N21，連接於該負載200之另一端，藉以使該第一線圈N1、第二線圈N2形成分別串聯於該負載200二端之組合狀態。 Please refer to Figures 1 to 2, it can be seen that the main structure of the balance device 100 for reducing leakage current according to the first embodiment of the present invention includes: a balance coil module 10 and a control module 20; wherein the balance coil module 10 It is arranged between a load 200 and a power supply terminal Vin. The balance coil module 10 has a first coil N1, a second coil N2, and a third coil N3. One end of the first coil N1 has a first terminal N11 connected to The power supply terminal PS of the power supply terminal Vin, the other end of the first coil N1 has a second terminal N12 connected to one end of the load 200, and one end of the second coil N2 has a fourth terminal N22 connected to the power supply terminal The ground terminal NS of Vin, the other end of the second coil N2 has a third end N21, which is connected to the other end of the load 200, so that the first coil N1 and the second coil N2 are respectively connected in series to the two ends of the load 200 combination state.

該第三線圈N3連結於該控制模組20，該控制模組20具有一供給電流感測部21及一回歸電流感測部22，分別設置於該負載200的二端；該控制模組20能分別感測通過該供給電流感測部21之由電源端Vin往該負載200方向 流動的供給電流Iin大小，以及通過該回歸電流感測部22之由負載200往電源端Vin方向流動的回歸電流Iout大小，並計算該供給電流Iin和回歸電流Iout之大小差異，再輸出一控制電流IC至該第三線圈N3產生一補償磁場，藉以驅使該平衡線圈模組10中分別經由該供給電流Iin和回歸電流Iout所產生的磁場大小形成平衡。 The third coil N3 is connected to the control module 20, and the control module 20 has a supply current sensing part 21 and a return current sensing part 22, which are respectively arranged at two ends of the load 200; the control module 20 Can respectively sense the direction from the power supply terminal Vin to the load 200 passing through the supply current sensing part 21 The magnitude of the flowing supply current Iin, and the magnitude of the return current Iout flowing from the load 200 to the power terminal Vin through the return current sensing part 22, and calculate the magnitude difference between the supply current Iin and the return current Iout, and then output a control The current IC flows to the third coil N3 to generate a compensating magnetic field, so as to drive the magnetic field generated by the supply current Iin and return current Iout respectively in the balance coil module 10 to form a balance.

上述結構中，該控制模組20係為一種可執行AC-AC轉換功能的電路裝置，且係由通電之後即開始運作，其具體之結構及運作方法屬於一種本領域中普遍的技術內容，所以在此不再針對該控制模組20作詳細的說明敘述。 In the above-mentioned structure, the control module 20 is a circuit device capable of performing an AC-AC conversion function, and it starts to operate after being powered on. Its specific structure and operation method belong to a common technical content in the field, so A detailed description of the control module 20 is omitted here.

在實際應用時，由於人體接觸到該負載200(即電器、電子產品)外露之導電部位時，或該負載200之導電部位浸水時，該導電部位與大地之間會形成多種漏電迴路，且各漏電迴路係與負載200之間形成並聯迴路；為了便於了解，在第1圖中於該負載200二端並聯一漏洩負載電路300，藉以模擬該負載200在漏電或觸電等異常狀態時的電流流動狀態。 In actual application, when the human body touches the exposed conductive parts of the load 200 (i.e. electrical appliances, electronic products), or when the conductive parts of the load 200 are immersed in water, various leakage circuits will be formed between the conductive parts and the earth, and each A parallel circuit is formed between the leakage circuit system and the load 200; in order to facilitate understanding, a leakage load circuit 300 is connected in parallel to the two ends of the load 200 in Figure 1, so as to simulate the current flow of the load 200 in abnormal states such as leakage or electric shock state.

在一個可行的實施例中，該漏洩負載電路300具有一並聯於該負載200二端之電阻R3，於該電阻R3之二端分別經由一電阻R1、電阻R2共同連接一電阻Rbody的一端，且由該電阻Rbody的另一端接地。 In a feasible embodiment, the leakage load circuit 300 has a resistor R3 connected in parallel to the two terminals of the load 200, and the two terminals of the resistor R3 are respectively connected to one end of a resistor Rbody via a resistor R1 and a resistor R2, and The other end of the resistor Rbody is grounded.

在模擬條件為PSIM 64-bit Version 9.0，AC 220V：peak voltage 311V(=RMS 220V)、由控制模組20向第三線圈N3所供應的電源為60Hz之AC 44V：peak voltage 62.2V(=RMS 44V)；以及該負載200係由10mH電感和100Ω電阻串聯而成，且該漏洩負載電路300的電阻R1為80Ω、電阻R2為20Ω、電阻R3為20Ω、電阻Rbody為500Ω之下，上述第1圖之模擬等效電路乃如第2圖所示。 The simulation condition is PSIM 64-bit Version 9.0, AC 220V: peak voltage 311V (=RMS 220V), the power supplied by the control module 20 to the third coil N3 is 60Hz AC 44V: peak voltage 62.2V (=RMS 44V); and the load 200 is composed of a 10mH inductance and a 100Ω resistor in series, and the resistance R1 of the leakage load circuit 300 is 80Ω, the resistance R2 is 20Ω, the resistance R3 is 20Ω, and the resistance Rbody is 500Ω, the above-mentioned first The analog equivalent circuit of the figure is shown in Figure 2.

請參第3至5圖所示，在一般不具有類似本發明之減少洩漏電流之平衡裝置100的負載200於運作過程中(即第2圖中，缺少該減少洩漏電流之平衡裝置100之結構)發生漏電或觸電等異常狀態時，該供給電流Iin的大小係為通過負載200之負載電流IL、通過電阻Rbody之漏電流IB，以及流動在電阻R1、電阻R2、電阻R3上之電流的總和，而該回歸電流Iout的大小係為由供給電流Iin扣除往電阻Rbody方向流動的漏電流IB；此時，由第2圖中該模擬等效電路中測出通過該負載200之負載電流IL以及通過該電阻Rbody之模擬漏電流IB的大小及波形，乃如第3圖所示，其中，該負載電流IL約略為3.1A，而該漏電流IB約略為0.125A。 Please refer to Figures 3 to 5, in general, the load 200 that does not have the balance device 100 for reducing leakage current similar to the present invention is in operation (that is, in Figure 2, the structure of the balance device 100 for reducing leakage current is lacking. ) when an abnormal state such as leakage or electric shock occurs, the magnitude of the supply current Iin is the sum of the load current IL passing through the load 200, the leakage current IB passing through the resistor Rbody, and the current flowing through the resistors R1, R2, and R3 , and the size of the return current Iout is the supply current Iin minus the leakage current IB flowing in the direction of the resistance Rbody; at this time, the load current IL passing through the load 200 and the The magnitude and waveform of the simulated leakage current IB passing through the resistor Rbody are shown in FIG. 3 , wherein the load current IL is approximately 3.1A, and the leakage current IB is approximately 0.125A.

在上述第2圖之結構中，該平衡線圈模組10的第一線圈N1、第二線圈N2、第三線圈N3的線圈匝數各設為100匝，且第一線圈N1的內部電阻Rs、第二線圈N2之內部電阻Rt及第三線圈N3的內部電阻Rp皆設為0.1Ω，且該第一線圈N1的漏電感Ls、第二線圈N2的漏電感Lt及第三線圈N3的漏電感Lp皆為0.0001H；此時，磁化電感Lm為0.2H。 In the structure of the above-mentioned Fig. 2, the coil turns of the first coil N1, the second coil N2, and the third coil N3 of the balance coil module 10 are each set to 100 turns, and the internal resistance Rs of the first coil N1, The internal resistance Rt of the second coil N2 and the internal resistance Rp of the third coil N3 are both set to 0.1Ω, and the leakage inductance Ls of the first coil N1, the leakage inductance Lt of the second coil N2 and the leakage inductance of the third coil N3 Both Lp are 0.0001H; at this time, the magnetizing inductance Lm is 0.2H.

因此，該平衡線圈模組10的各項參數如下表所列：

Figure 110144153-A0305-02-0011-2
Therefore, the parameters of the balance coil module 10 are listed in the following table:
Figure 110144153-A0305-02-0011-2

同理，在上述第2圖之結構中，在相同發生漏電或觸電等異常狀態時，若該減少洩漏電流之平衡裝置100並未正常運作的情形下，通過該負載200之負載電流IL以及通過該電阻Rbody之模擬漏電流IB的大小及波形，乃如第4圖所示；由上述該第3圖及第4圖所示，無論是未設置該平衡線圈模組10，或該平衡線圈模組10未動作，通過該負載200之負載電流IL以及模擬之漏電流IB的電流大小並不會有太大的變化。 Similarly, in the structure of the above-mentioned Fig. 2, when abnormal conditions such as electric leakage or electric shock occur, if the balance device 100 for reducing leakage current does not operate normally, the load current IL passing through the load 200 and passing through The magnitude and waveform of the simulated leakage current IB of the resistor Rbody are as shown in Figure 4; as shown in Figure 3 and Figure 4 above, no matter the balance coil module 10 is not set, or the balance coil module When the group 10 is not in operation, the magnitudes of the load current IL passing through the load 200 and the simulated leakage current IB will not change much.

然而，本發明上述第一實施例的結構中，在相同發生漏電或觸電等異常狀態時，若該減少洩漏電流之平衡裝置100正常運作，則該控制模組20可經由該供給電流感測部21感測該供給電流Iin的大小，並經由該回歸電流感測部22感測該回歸電流Iout的大小，並計算該供給電流Iin和回歸電流Iout之大小差異；其中，若該供給電流Iin大於該回歸電流Iout，則該控制模組20輸出之控制電流IC係與流動於該第二線圈N2之回歸電流Iout相同方向，使該第三線圈N3產生一與該第二線圈N2相同方向的補償磁場，藉以平衡該供給電流Iin通過該第一線圈N1所產生之正向磁場；而在部份特殊的情形下，若該供給電流Iin小於該回歸電流Iout，則該控制模組20輸出之控制電流IC係與流動於該第一線圈N2之供給電流Iin相同方向，使該第三線圈N3產生一與該第一線圈N1相同方向的補償磁場，藉以平衡該回歸電流Iout通過該第二線圈N2所產生之反向磁場；因此，利用上述方式可使該平衡線圈模組10中分別經由該供給電流Iin和回歸電流Iout所產生的磁場大小形成平衡。 However, in the structure of the above-mentioned first embodiment of the present invention, when abnormal conditions such as electric leakage or electric shock occur, if the balance device 100 for reducing leakage current operates normally, the control module 20 can supply current through the sensing part 21 senses the size of the supply current Iin, and senses the size of the return current Iout through the return current sensing part 22, and calculates the magnitude difference between the supply current Iin and the return current Iout; wherein, if the supply current Iin is greater than The return current Iout, the control current IC output by the control module 20 is in the same direction as the return current Iout flowing in the second coil N2, so that the third coil N3 generates a compensation in the same direction as the second coil N2 magnetic field, so as to balance the positive magnetic field generated by the supply current Iin passing through the first coil N1; and in some special cases, if the supply current Iin is smaller than the return current Iout, the output control of the control module 20 The current IC is in the same direction as the supply current Iin flowing in the first coil N2, so that the third coil N3 generates a compensating magnetic field in the same direction as the first coil N1, so as to balance the return current Iout through the second coil N2 The generated reverse magnetic field; therefore, using the above method, the magnetic field generated by the supply current Iin and the return current Iout respectively in the balance coil module 10 can be balanced.

此時，通過該負載200之負載電流IL以及通過該電阻Rbody之模擬漏電流IB的大小及波形，乃如第5圖所示，且由該第5圖所揭露的內容中，明顯可看出通過該負載200之負載電流IL約略為3.1A，與前述第3、4圖所示 之大小相同，表示在發生漏電或觸電等異常狀態時，仍可對該負載200提供基本正常供電，但該模擬之漏電流IB則由原來約略為0.125A降至約略為0.003A，因此該漏電流IB大小明顯降低表示可有效降低漏、觸電流之情形。 At this time, the magnitude and waveform of the load current IL passing through the load 200 and the simulated leakage current IB passing through the resistor Rbody are as shown in Fig. 5, and it can be clearly seen from the content disclosed in Fig. 5 The load current IL passing through the load 200 is approximately 3.1A, which is the same as that shown in Figures 3 and 4 above. The values are the same, which means that in the event of abnormal conditions such as electric leakage or electric shock, the load 200 can still be provided with a basically normal power supply, but the simulated leakage current IB is reduced from approximately 0.125A to approximately 0.003A. Significant reduction in the magnitude of current IB indicates that leakage and contact currents can be effectively reduced.

請參第6、7圖所示，可知本發明之上述第一實施例的結構，若將其應用於三相四線式電源時，各減少洩漏電流之平衡裝置100係分別設置於該三相電源各供電之電源端子R、S、T與接地端子N之間(如第6圖所示)；而若將其應用於三相三線式電源時，則各減少洩漏電流之平衡裝置100係分別設置於該三相電源各供電之電源端子R、S、T之間(如第7圖所示)。 Please refer to Figures 6 and 7. It can be seen that the structure of the above-mentioned first embodiment of the present invention, if it is applied to a three-phase four-wire power supply, each balancing device 100 for reducing leakage current is respectively arranged on the three-phase Between the power supply terminals R, S, T of each power supply and the ground terminal N (as shown in Figure 6); and if it is applied to a three-phase three-wire power supply, each balancing device 100 for reducing leakage current is respectively It is arranged between the power terminals R, S, and T of each power supply of the three-phase power supply (as shown in Fig. 7).

請參第8圖所示，可知本發明之上述減少洩漏電流之平衡裝置100於實際應用時，在一電源端Vin經由該減少洩漏電流之平衡裝置100連結一插座25或其它能與負載200連結之接電組件，且該負載200經由該插座25取得電源之使用環境(即一般較常見的漏觸電環境)下；當該插座25浸水而造成一漏電環境，且於該漏電環境中產生一觸電位置S，假設該插座25中的電源接點(即連結於該電源端子PS的接點)與觸電位置S之間的距離為DI，而該插座25中的接地接點(即連結於該接地端子NS的接點)與觸電位置S之間的距離為DO，則在上述該插座25中的電源接點與接地接點間距離足夠接近的條件下，該電源接點與觸電位置S之間的距離DI可視為等於該接地接點與觸電位置S之間的距離DO。 Please refer to FIG. 8, it can be seen that the above-mentioned balance device 100 for reducing leakage current of the present invention is actually used, and a power supply terminal Vin is connected to a socket 25 or other devices that can be connected to a load 200 through the balance device 100 for reducing leakage current. In the environment where the load 200 obtains power through the socket 25 (i.e., the more common electric leakage environment); when the socket 25 is immersed in water, a leakage environment is caused, and an electric shock occurs in the leakage environment Position S, assuming that the distance between the power contact in the socket 25 (that is, the contact that is connected to the power terminal PS) and the electric shock position S is DI, and the ground contact in the socket 25 (that is, that that is connected to the ground The distance between the contact point of terminal NS) and the electric shock position S is DO, then under the condition that the distance between the power contact and the ground contact in the socket 25 is close enough, the distance between the power contact and the electric shock position S The distance DI can be regarded as equal to the distance DO between the ground contact and the electric shock location S.

請參第9圖所示，由於在上述第8圖中之漏電環境下，該減少洩漏電流之平衡裝置100中的控制模組20輸出至第三線圈N3使漏電流最小化之控制電壓VC，係由該觸電位置S分別至該插座25中的電源接點、接地接點之間通過水下路徑的電阻(即該漏洩負載電路300中之電阻R1、電阻R2)比例所 決定；依上述該電源接點與觸電位置S之間的距離DI等於該接地接點與觸電位置S之間的距離DO的結論，可知由該電源接點與觸電位置S之間的距離DI及該接地接點與觸電位置S之間的距離DO等二路徑所產生之電阻(即該漏洩負載電路300中之電阻R1、電阻R2)幾乎相同。 Please refer to Fig. 9, because in the leakage environment in Fig. 8 above, the control module 20 in the balance device 100 for reducing leakage current outputs the control voltage VC to the third coil N3 to minimize the leakage current, It is determined by the ratio of the electric shock position S to the power contact in the socket 25 and the ground contact through the underwater path (ie, the resistance R1 and the resistance R2 in the leakage load circuit 300 ). Determine; according to the conclusion that the distance DI between the power contact and the electric shock position S is equal to the distance DO between the ground contact and the electric shock position S, it can be known that the distance DI and the distance between the power contact and the electric shock position S The resistance generated by the two paths such as the distance DO between the ground contact and the electric shock position S (ie, the resistance R1 and the resistance R2 in the leakage load circuit 300 ) is almost the same.

在上述情形下，若該平衡線圈模組10中第一線圈N1之匝數：第二線圈N2之匝數：第三線圈N3之匝數=1：1：1，則該控制電壓VC=電源端Vin的電壓/2；而若該平衡線圈模組10中第一線圈N1之匝數：第二線圈N2之匝數：第三線圈N3之匝數=1：1：2，則該控制電壓VC=電源端Vin電壓。 Under the above circumstances, if the number of turns of the first coil N1 in the balance coil module 10: the number of turns of the second coil N2: the number of turns of the third coil N3=1:1:1, then the control voltage VC=power supply The voltage of the terminal Vin/2; and if the number of turns of the first coil N1 in the balance coil module 10: the number of turns of the second coil N2: the number of turns of the third coil N3=1:1:2, then the control voltage VC=Vin voltage at the power supply terminal.

此時，在本發明第二實施例中，若採用該平衡線圈模組10中第一線圈N1之匝數：第二線圈N2之匝數：第三線圈N3之匝數=1：1：2之組成架構，將該第三線圈N3二端分別連結於該電源端Vin，且該控制模組20再於該第三線圈N3與該電源端Vin之間設置一切換開關組23，其餘各部電路結構則與前述第一實施例相同；藉此，當該控制模組20感測並計算該供給電流Iin和回歸電流Iout具有大小差異後，可直接驅動該切換開關組23導通該第三線圈N3與該電源端Vin，使該第三線圈N3通電產生該補償磁場，以降低該漏電流IB的電流大小。 At this time, in the second embodiment of the present invention, if the number of turns of the first coil N1 in the balance coil module 10: the number of turns of the second coil N2: the number of turns of the third coil N3=1:1:2 The structure of the structure is that the two ends of the third coil N3 are respectively connected to the power supply terminal Vin, and the control module 20 is further provided with a switch group 23 between the third coil N3 and the power supply terminal Vin, and the other parts of the circuit The structure is the same as that of the aforementioned first embodiment; thereby, when the control module 20 senses and calculates the magnitude difference between the supply current Iin and the return current Iout, it can directly drive the switch group 23 to turn on the third coil N3 Connecting to the power terminal Vin, the third coil N3 is energized to generate the compensating magnetic field, so as to reduce the magnitude of the leakage current IB.

由於此種架構中，該控制模組20無需執行複雜的運算及操作(轉換該電源端Vin之電壓，並調整該控制電流IC之大小)動作，因此可有效簡化該控制模組20的架構，達到降低成本、提昇經濟效益等功效。 Because in this structure, the control module 20 does not need to perform complex calculations and operations (convert the voltage of the power supply terminal Vin, and adjust the size of the control current IC), so the structure of the control module 20 can be effectively simplified. To reduce costs, improve economic efficiency and other effects.

請參第10圖所示，可知在上述第8圖中的應用環境下，若該漏電發生的位置在連接於該電源端Vin之電源端子PS直接接地(與大地連接)的情形下，則該電阻R1、電阻R2、電阻R3組合後之總和為0；此時，若該平衡 線圈模組10中第一線圈N1之匝數：第二線圈N2之匝數：第三線圈N3之匝數=1：1：1，則該控制電壓VC=電源端Vin電壓為最佳。 Please refer to Figure 10, it can be seen that in the application environment in Figure 8 above, if the location where the leakage occurs is that the power terminal PS connected to the power terminal Vin is directly grounded (connected to the ground), then the The sum of resistance R1, resistance R2 and resistance R3 combined is 0; at this time, if the balance The number of turns of the first coil N1 in the coil module 10 : the number of turns of the second coil N2 : the number of turns of the third coil N3 = 1:1:1, then the control voltage VC=the voltage of the power supply terminal Vin is optimal.

因此，在本發明第三實施例中，若採用該平衡線圈模組10中第一線圈N1之匝數：第二線圈N2之匝數：第三線圈N3之匝數=1：1：1之組成架構，將該第三線圈N3二端分別連結於該電源端Vin，且該控制模組20再於該第三線圈N3與該電源端Vin之間設置一切換開關組23，其餘各部電路結構則與前述第一實施例相同；藉此，當該控制模組20感測並計算該供給電流Iin和回歸電流Iout具有大小差異後，可直接驅動該切換開關組23導通該第三線圈N3與該電源端Vin，使該第三線圈N3通電產生該補償磁場，以降低該漏電流IB的電流大小。 Therefore, in the third embodiment of the present invention, if the number of turns of the first coil N1 in the balanced coil module 10: the number of turns of the second coil N2: the number of turns of the third coil N3=1:1:1 To form a structure, the two ends of the third coil N3 are respectively connected to the power supply terminal Vin, and the control module 20 is further provided with a switching switch group 23 between the third coil N3 and the power supply terminal Vin, and the other parts of the circuit structure It is the same as the aforementioned first embodiment; thereby, when the control module 20 senses and calculates that the supply current Iin and the return current Iout have a magnitude difference, it can directly drive the switch group 23 to turn on the third coil N3 and the return current Iout. The power terminal Vin energizes the third coil N3 to generate the compensating magnetic field, so as to reduce the magnitude of the leakage current IB.

請參第11圖所示，可知本發明第四實施例中該減少洩漏電流之平衡裝置100的結構包括：平衡線圈模組10及控制模組20等部份；其中該平衡線圈模組10具有第一線圈N1、第二線圈N2、第三線圈N3，該第一線圈N1之匝數：第二線圈N2之匝數：第三線圈N3之匝數=1：1：2，該第一線圈N1、第二線圈N2係分別串聯於一負載200的二端，該第三線圈N3具有一中間抽頭N31，能將該第三線圈N3均分為二相同匝數之線圈。 Please refer to Fig. 11, it can be seen that the structure of the balance device 100 for reducing leakage current in the fourth embodiment of the present invention includes: a balance coil module 10 and a control module 20; wherein the balance coil module 10 has The first coil N1, the second coil N2, the third coil N3, the number of turns of the first coil N1: the number of turns of the second coil N2: the number of turns of the third coil N3=1:1:2, the number of turns of the first coil N1 and the second coil N2 are respectively connected in series with two ends of a load 200. The third coil N3 has a center tap N31, which can divide the third coil N3 into two coils with the same number of turns.

該控制模組20可分別操作控制一切換開關組23及一斷電開關24，該切換開關組23包括第一切換開關231及第二切換開關232，該第一切換開關231係設置於該第三線圈N3一端與該電源端Vin之間，該第二切換開關232係設置於該中間抽頭N31與該電源端Vin之間，而該斷電開關24係設置於該平衡線圈模組10與該電源端Vin之間；除此之外，該平衡線圈模組10、控制模組20與其它相關組件的連結關係皆與前述第二、三實施例相同，在此不多作贅述。 The control module 20 can operate and control a switching switch group 23 and a power-off switch 24 respectively. The switching switch group 23 includes a first switching switch 231 and a second switching switch 232. The first switching switch 231 is arranged on the second switching switch 231. Between one end of the three-coil N3 and the power supply terminal Vin, the second switch 232 is set between the center tap N31 and the power supply terminal Vin, and the power-off switch 24 is set between the balance coil module 10 and the power supply terminal Vin. Between the power supply terminals Vin; in addition, the connection relationship between the balance coil module 10, the control module 20 and other related components is the same as that of the second and third embodiments described above, and will not be repeated here.

在實際應用時，當該控制模組20感測並計算該供給電流Iin和回歸電流Iout具有大小差異後；可由該控制模組20先驅動該第一切換開關231導通該完整的第三線圈N3與該電源端Vin，此時該第一線圈N1之匝數：第二線圈N2之匝數：第三線圈N3之匝數=1：1：2，該減少洩漏電流之平衡裝置100具有與前述第二實施例相同之結構特徵，並可產生與該第二實施例相同之功效；若上述動作無法有效降低該漏電流IB大小，則該控制模組20再改驅動該第二切換開關232導通該中間抽頭N31與該電源端Vin，此時，該第一線圈N1之匝數：第二線圈N2之匝數：第三線圈N3之匝數=1：1：1，該減少洩漏電流之平衡裝置100具有與前述第三實施例相同之結構特徵，並可產生與該第三實施例相同之功效；而若上述操作仍無法將該漏電流IB大小降至所預期的範圍之下，則該控制模組20驅動該斷電開關24動作，以切斷該平衡線圈模組10與該電源端Vin之連接，以預防可能發生的觸電事故。 In actual application, after the control module 20 senses and calculates the magnitude difference between the supply current Iin and the return current Iout; the control module 20 can first drive the first switch 231 to turn on the complete third coil N3 With the power supply terminal Vin, the number of turns of the first coil N1: the number of turns of the second coil N2: the number of turns of the third coil N3=1:1:2, the balance device 100 for reducing leakage current has the same characteristics as the aforementioned The same structural features of the second embodiment, and can produce the same effect as the second embodiment; if the above actions can not effectively reduce the magnitude of the leakage current IB, then the control module 20 will drive the second switch 232 to be turned on again The center tap N31 and the power supply terminal Vin, at this time, the number of turns of the first coil N1: the number of turns of the second coil N2: the number of turns of the third coil N3 = 1:1:1, the balance of reducing the leakage current The device 100 has the same structural features as the aforementioned third embodiment, and can produce the same effect as the third embodiment; and if the above operations still cannot reduce the size of the leakage current IB below the expected range, then the The control module 20 drives the cut-off switch 24 to cut off the connection between the balance coil module 10 and the power terminal Vin, so as to prevent possible electric shock accidents.

綜合以上所述，本發明減少洩漏電流之平衡裝置確可達成在電器設備浸水或人體觸電時，可有效降低漏(觸)電流，並維持對電器設備基本正常供電之功效，實為一具新穎性及進步性之發明，爰依法提出申請發明專利；惟上述說明之內容，僅為本發明之較佳實施例說明，舉凡依本發明之技術手段與範疇所延伸之變化、修飾、改變或等效置換者，亦皆應落入本發明之專利申請範圍內。 Based on the above, the balance device for reducing leakage current of the present invention can effectively reduce the leakage (touch) current when the electrical equipment is immersed in water or the human body gets an electric shock, and maintain the effect of basically normal power supply to the electrical equipment. It is a novel device. For innovative and progressive inventions, please apply for an invention patent in accordance with the law; however, the content of the above description is only a description of the preferred embodiment of the present invention, for example, any changes, modifications, changes or other extensions based on the technical means and scope of the present invention Effective replacements should also fall within the scope of the patent application of the present invention.

10： 平衡線圈模組 20： 控制模組 21：供給電流感測部 22： 回歸電流感測部 100： 減少洩漏電流之平衡裝置 200： 負載 300：漏洩負載電路 IB：漏電流 IC：控制電流 IL：負載電流 Iin：供給電流 Iout：回歸電流 N1： 第一線圈 N2： 第二線圈 N3：第三線圈 N11：第一端 N12：第二端 N21：第三端 N22：第四端 NS：接地端子 PS：電源端子 R1、R2、R3、Rbody：電阻 Vin：電源端 10: Balance coil module 20: Control Module 21: Supply current sensing unit 22: Return current sensing part 100: Balance device to reduce leakage current 200: load 300: Leaky load circuit IB: leakage current IC: Control current IL: load current Iin: supply current Iout: return current N1: first coil N2: second coil N3: third coil N11: first end N12: second end N21: third end N22: Fourth terminal NS: Ground terminal PS: power terminal R1, R2, R3, Rbody: Resistors Vin: power terminal

Claims (9)

一種減少洩漏電流之平衡裝置，包括：一設置於預設負載(200)及電源端(Vin)之間的平衡線圈模組(10)；該平衡線圈模組(10)具有第一線圈(N1)、第二線圈(N2)、第三線圈(N3)；其中該平衡線圈模組(10)之該第一線圈(N1)、第二線圈(N2)分別連結於該負載(200)之二端，而該第三線圈(N3)連結於一控制模組(20)，該控制模組(20)具有一供給電流感測部(21)及一回歸電流感測部(22)，分別設置於該負載(200)的二端；該第一線圈(N1)能受到一由該電源端(Vin)往該負載(200)方向流動的供給電流(Iin)通過，而產生一個正向磁場，該第二線圈(N2)能受到一由該負載(200)往該電源端(Vin)方向流動的回歸電流(Iout)通過，而產生一個反向磁場，該控制模組(20)係能分別感測通過該供給電流感測部(21)之該供給電流(Iin)的大小，以及通過該回歸電流感測部(22)之該回歸電流(Iout)的大小，再計算出該供給電流(Iin)與回歸電流(Iout)之間的大小差異，並控制一電流通過該第三線圈(N3)，藉以產生一個可以彌補該正向磁場與反向磁場之間差距的補償磁場。 A balance device for reducing leakage current, comprising: a balance coil module (10) arranged between a preset load (200) and a power supply terminal (Vin); the balance coil module (10) has a first coil (N1 ), the second coil (N2), the third coil (N3); wherein the first coil (N1) and the second coil (N2) of the balance coil module (10) are respectively connected to two of the load (200) Terminal, and the third coil (N3) is connected to a control module (20), the control module (20) has a supply current sensing part (21) and a return current sensing part (22), respectively set At the two ends of the load (200); the first coil (N1) can receive a supply current (Iin) flowing in the direction of the load (200) from the power supply terminal (Vin), and generate a positive magnetic field, The second coil (N2) can receive a return current (Iout) flowing from the load (200) to the power supply terminal (Vin), and generate a reverse magnetic field, and the control module (20) can be respectively Sensing the magnitude of the supply current (Iin) passing through the supply current sensing part (21) and the magnitude of the return current (Iout) passing through the return current sensing part (22), and then calculating the supply current ( Iin) and the return current (Iout), and control a current to pass through the third coil (N3), so as to generate a compensation magnetic field that can make up the gap between the forward magnetic field and the reverse magnetic field. 如請求項1所述之減少洩漏電流之平衡裝置，其中該控制模組(20)係能輸出一控制電流(IC)至該第三線圈(N3)，藉以使該第三線圈(N3)產生該補償磁場。 The balance device for reducing leakage current as described in claim 1, wherein the control module (20) can output a control current (IC) to the third coil (N3), so that the third coil (N3) generates The compensating magnetic field. 如請求項2所述之減少洩漏電流之平衡裝置，其中該控制模組(20)係將該控制電流(IC)之方向控制調整到與通過該第一線圈(N1)之供給電流方向一致的狀態。 The balance device for reducing leakage current as described in claim 2, wherein the control module (20) adjusts the direction control of the control current (IC) to be consistent with the direction of the supply current passing through the first coil (N1) state. 如請求項2所述之減少洩漏電流之平衡裝置，其中該控制模組(20)係將該控制電流(IC)之方向控制調整到與通過該第二線圈(N2)之回歸電流方向一致的狀態。 The balance device for reducing leakage current as described in claim 2, wherein the control module (20) adjusts the direction control of the control current (IC) to be consistent with the return current direction passing through the second coil (N2) state. 如請求項1所述之減少洩漏電流之平衡裝置，其中該第三線圈(N3)係分別連結於該電源端(Vin)，該控制模組(20)包括一設於該第三線圈(N3)與該電源端(Vin)之間的切換開關組(23)，當該控制模組(20)操作該切換開關組(23)導通該第三線圈(N3)與該電源端(Vin)，能使該第三線圈(N3)通電產生該補償磁場。 The balance device for reducing leakage current as described in claim 1, wherein the third coil (N3) is connected to the power supply terminal (Vin) respectively, and the control module (20) includes a device located on the third coil (N3) ) and the switch group (23) between the power terminal (Vin), when the control module (20) operates the switch group (23) to conduct the third coil (N3) and the power terminal (Vin), The compensation magnetic field can be generated by energizing the third coil (N3). 如請求項5所述之減少洩漏電流之平衡裝置，其中該第一線圈(N1)之匝數：該第二線圈(N2)之匝數：該第三線圈(N3)之匝數=1：1：2。 The balance device for reducing leakage current as described in Claim 5, wherein the number of turns of the first coil (N1): the number of turns of the second coil (N2): the number of turns of the third coil (N3)=1: 1:2. 如請求項6所述之減少洩漏電流之平衡裝置，其中該第三線圈(N3)具有一中間抽頭(N31)，能將該第三線圈(N3)均分為二相同匝數之線圈，且該切換開關組(23)包括第一切換開關(231)及第二切換開關(232)，該第一切換開關(231)係設置於該第三線圈(N3)一端與該電源端(Vin)之間，該第二切換開關(232)係設置於該中間抽頭(N31)與該電源端(Vin)之間。 The balance device for reducing leakage current as described in claim 6, wherein the third coil (N3) has a center tap (N31), which can divide the third coil (N3) into two coils with the same number of turns, and The changeover switch group (23) includes a first changeover switch (231) and a second changeover switch (232), and the first changeover switch (231) is arranged at one end of the third coil (N3) and the power supply end (Vin) Between, the second switching switch (232) is arranged between the middle tap (N31) and the power terminal (Vin). 如請求項5所述之減少洩漏電流之平衡裝置，其中第一線圈(N1)之匝數：第二線圈(N2)之匝數：第三線圈(N3)之匝數=1：1：1。 The balance device for reducing leakage current as described in Claim 5, wherein the number of turns of the first coil (N1): the number of turns of the second coil (N2): the number of turns of the third coil (N3)=1:1:1 . 如請求項5或6或7或8所述之減少洩漏電流之平衡裝置，其中該切換開關組(23)另包括一斷電開關(24)，該斷電開關(24)係設置於該平衡線圈模組(10)與該電源端(Vin)之間。 The balance device for reducing leakage current as described in claim 5 or 6 or 7 or 8, wherein the switching switch group (23) further includes a power-off switch (24), and the power-off switch (24) is set on the balance Between the coil module (10) and the power supply terminal (Vin).
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