201006105 九、發明說明： 【發明所屬之技術領域】 -種功因校正電路架構，是應用在主動式PFC的控㈣路架構。 【先前技術】 現今電源供應器已普遍應用於各種電子產品，且技術不斷精進， 其輸出功轉稍上升，為了更進—步提高功率，勢必要提高工作之 效率；影應n效率關數主要包含輸人電力之辨因數以及 轉換電力軸祕，其巾電祕應时的功因校正電路（p_rFact〇r C〇細ion ’ _為PFC)即极善輸人電力功率因數的重要電路，尤 其是主動式功因校正電路更將工作效率提高至8〇%以上，而包含該功 因校正電路的電源供應器如圖i所示，係取得一輸入電力，該輸入電 力經過-整流電路8後由該功因校正電路！調變該輸入電力之相位， 再經由-電力轉換電路9調變為輸出電壓，其中該電力轉換電路9可 為-轉換器（C_rte〇或者為—切換式之轉換電路，而其中該功因 校正電路丨與該電力轉換電路9則分職據—控 作，其中典型的功因校正電路i包含—開關元件12、一電 、-電容雜14以及該控制單幻卜其帽控制單心自該功因 校正電路1後端取得-碰訊號，並搭配零電流侧迴路（zcd)以 及- SR正反器以產生一週期控制訊號驅動該開關元件12，而令該電 感元件U與該電容元件14調變該輸人電力之相位，該功因校正電路 1之工作_為術領域具—般知識者賴知，故不再贅述 習知的功因校正電路1亦有其使用壽命，大部份的功因校正電路！的 故障皆因其中的電容元件14在長期吸收輸入電力的功率波動下壽命 會較快衰減，且為了吸收該功率波動，必須選用電容值較大 的電容元件，因而成本無法降低；上述習知功因校正電路ι因壽命 受限於電容的哀減，搭配工作壽命長的電子元件會造成浪費，例如驅 動發光二極體的驅動電路中利用上述習知的功因校正電路！時，由於 發光二極體本身至少具有十萬小時的壽命但由於該電容树Μ的 哀減’造成該功因校正電路1可能幾千小時就已無法工作（該電容元 201006105 件14的平均壽命）’此時鋪設該功因校正電路1的電路板以及焊接 於其上的發光二極體皆必須一併更換，使該發光二極體使用還不到其 壽命一半的時候就必須連同整個電路板一同廢棄，造成額外的浪費與 成本增加；藉由上述例子可知’習知功因校正電路1的壽命受限於該 電容元件14為必須解決的問題。 【發明内容】 有鑑於習知功因校正電路的壽命受限於電容元件之壽命，因此本 發明之目的即在於提供一種電路架構改善習知的缺失，延長該電容元 件與該功因校正電路的使用壽命。 φ 本發明為一種功因校正電路架構，該功因校正電路具有一電感元 件、一電容元件、—開關元件以及一控制單元，該控制單元產生一週 期控制訊驗繼開關元件切換，藉此控獅職電感元件之電感電 流，而該功因校正電路更包括一諧波調變單元以及一波形調變單元， ' 其巾觸波$變單元係取得錄人電力並藉由計算產生-諧波訊號， 該波形調變單元則取得—回授職以及該諧波滅，並依據該諸波訊 號的相位將細授職機產生-諧波媒動訊號，該補單觸依據 該諸波驅動職以機該週驗制職之聊寬度；其巾該譜波訊號 係由該輸人電力的分壓峨經過多絲法運算而產生—魏，該諸波 S與稀人電力械而轉職波職，以綱波織加人調變該週 籲雛制訊號之程序中’可調變該電感電流之波形與該微驅動訊號相 ，，以此方式降低可該輸人電力的功率波動而達舰長該電容元件的 哥命，並且可選用電容值較顿電容元件（例如使㈣膜電容取代習 知電路常用的電解電容）而具有成本較低之優點。 【實施方式】 :參閱圖2，該騎福本酬之電路架構方塊圖，本發明為一 種提高功因校正電路壽命之電路架構，其中該功因校正電路 1係應用 於-電源供應器中，該電源供應器取得一輸入電力後送至一整流電路 8 ’經過整流後即由該功因校正電路i調變該輸人電力之功率因數， 最後再送至-電力轉換電路9產生—輸出電力，其中，該功因校正電 201006105 路1具有一電感元件13、一電容元件14、一開關元件12以及一控制 單兀11，該控制單元1〗產生一週期控制訊號驅動該開關元件12切 換，藉此控制通過該電感元件13之電感電流，使該電感電流的相位 與跨在該電容元件14之電壓相位接近而達到提高功率因數之效果， 然而’為了該電容元件14得以延長壽命，該功因校正電路1更包括 -譜波調變單元2以及-跡顺單元3，其巾該驗調變單元2係 取得該輸人電力並藉树算產生—諧波魏，誠形調變單元3則自 該功因校正f路1之輸丨端取得—賴減，並錄據麟波訊號的 相位將該回授訊號調變產生一諧波驅動訊號，亦即將該回授訊號調變 為與該譜舰朗她秘成該触鶴織，觸波驅動訊號送至 該控制單元η ’ _解元u職據麟波鶴織關變該週期 控制訊號之週期寬度，而該週期控制訊號驅動該開關元件12之導通 與截止即於調變該鶴電流之相位，因此利践諧波驅動訊號調變 該週期控槪號即可令該電感電流具有與雜波訊號__位（亦 即令該電感電流亦具有諧波成份）；上述之電路架構係透過在週期控 制訊號中加入諧波訊號的成份，進而調變該電感電流亦同樣具有與該 諧波訊號相同的相位，諳波成份加入電感電流中時，該電感電流的波 動將改變，該電感電流與輸入電壓乘積亦改變，使該輸入電力的功率 波動減小，連帶的使該電容元件14要吸收的功率波動減小，因而避 免該電容元件14過快衰退，延長該電容元件14之壽命，並可選用電 容值較小的電容元件14。 為了實施將諧波成份加入週期調變的電路，該諧波調變單元2則 包含一個以上的乘法器以及一減法器，該乘法器自該輸入電力擷取一 分壓訊號，並將該分壓訊號相乘以取得一諧波，上述電路架構之實施 態樣可參閱圖4，該諧波調變單元2具有兩個乘法器21、22，該兩乘 法器21、22自該輸入電力的同一分壓訊號乂，其中一乘法器21將該 分壓訊號Va彼此相乘以得到該分壓訊號％二次方之諧波，另一乘 法器22將該分壓訊號二次方之諧波y2a與該分壓訊號％再次相乘以得 到該分壓訊號Va三次方之諧波v3a送至該減法器，該減法器係由一運 201006105 算放大器U1以及複數電阻IU、R2、R3 ' R4所構成，並透過減法器 將該輸入電力與該諧波v3a相減而產生該諧波訊號％，因此該諧波訊 號％實為一具有三次諧波成份的訊號；該波形調變單元2亦可為一乘 法器，該波形調變單元2將該回授訊號與該諧波訊號Vc相乘而產生該 諧波驅動訊號，因此該諧波驅動訊號亦同樣的具有三次諧波的成份； 在圖3的電路中，該控制單元u利用一比較器取得該諧波驅動訊號與 該開關元件12之電流’並比較兩者之大小以決定該開關元件截止 之時序，當偵測該電感電流大於該諧波驅動訊號時，該比較器會輸出 高準位重置該SR正反器的輸出，令該驅動單元截止該開關元件12， 因此，通過該電感電流會限制在該諧波驅動訊號所形成之波形内，使 該電感電流將形成具有三次譜波成份的波形。 請參閱圖4-1與圖4-2，其中圖4-1為習知功因校正電路之電流波 形圖，圖4-2為本發明上述電路之電流波形圖；圖4_ι中分別可見一 習知電感電流71、一習知電流+值包絡線72以及一習知電流平均值 73之波形，該習知電感電流71是受控於該開關元件12之導通與截 止，而習知電路會產生該習知電流峰值包絡線72，亦即強迫該開關元 件12截止之電流最大值，限制該習知電感電流71小於該習知電流峰 值包絡線72 ’而透過運算得出該習知電流平均值73 ;圖4_2中可見該 電流峰值包絡線75因加入了諧波成份，使得該電感電流74之峰值以 及該電流平均值76亦形成具有諧波成份之波形；請再參閱圖5-1與圖 5-2，圖5-1為習知電路之節點波形圖，圖5_2為本發明之節點波形 圖；其中vg定義為輸入電力整流後之電壓波形，v。定義為該功因校正 電路1之輸出電壓’ va3定義為該諧波調變單元2所產生的諧波，iL為 該電感電流；在圖5-1中由於習知電路並為具有產生諧波之電路，故 va3以一直線代表其不存在，該輸入電壓波形Vg為―正弦波，該習知 的電感電流iL為一正弦波，因此當輸入電壓波形Vg與習知的電感電流 之相位調變至相近時，兩者相乘所產生之蜂值功率較大，與功率最 低值相比具有較大的落差，需透過該電容元件14吸收與釋放的功率 亦較大；再請參閱圖5-2，加入諸波va3之成份後，該電感電流iL之蜂 201006105 值與輸入電壓波形vg之峰值相位錯開，因此兩者相乘所產生之峰值功 率可明顯降低，需透過該電容元件14吸收與釋放的功率亦較小，可 避免該電容元件14長期的充放電後提早衰退，達到延長壽命的功 效。 藉由上述電路使輸入功率峰值降低，可使該電容元件14需吸收 與釋放的功率波動降低，並且可一併選用電容值較小的電容元件14， 亦達到延長其壽命之效果，避免該功因校正電路丨因該電容元件14 衰退而損毁’並可《賴電容取代f知電財㈣電解f容；雖然 ❹ 本發明已讀佳實施觸露如上，麟並_ 定本發明，任何熟 習此技藝者，在不脫離本發明之精神和範_，而所作之些許更動與 濁飾’皆應涵蓋於本發财，本發明之賴範g當視後附之 專利範圍所界定者為準。 综上所述，本發明較習知之電路增進上述功效，應已充分符 穎性及進步性之法定創新專利要件，爰依法提出應 准本件發明專利申請案，以勵創作，至感 “貴局核 201006105 【圖式簡單說明】 圖1為習知功因校正電路架構圖。 圖2為本發明之電路架構方塊圖。 圖3為本發明之電路實施態樣圖。 圖4-1為習知功因校正電路之電流波形圖。 圖4-2為本發明之電流波形圖。 圖5-1為習知功因校正電路之各節點波形圖。 圖5-2為本發明之各節點波形圖。 【主要元件符號說明】201006105 IX. Invention Description: [Technical field of invention] - The power factor correction circuit architecture is a control (four) road architecture applied to active PFC. [Prior Art] Nowadays, power supplies have been widely used in various electronic products, and the technology has been continuously improved. The output power has increased slightly. In order to further improve power, it is necessary to improve the efficiency of work. Including the discriminating factor of the input power and the power axis of the conversion, the power factor correction circuit (p_rFact〇r C〇fine ion ' _ is PFC) is the important circuit for inputting the power factor of the power, especially The active power factor correction circuit further increases the working efficiency to more than 8〇%, and the power supply including the power factor correction circuit is an input power obtained after passing through the rectifier circuit 8 as shown in FIG. Correct the circuit by this power factor! The phase of the input power is modulated, and then converted to an output voltage via a power conversion circuit 9, wherein the power conversion circuit 9 can be a converter (C_rte〇 or a switching type conversion circuit, wherein the power factor correction The circuit 丨 and the power conversion circuit 9 are divided into jobs-controlled, wherein the typical power factor correction circuit i includes a switching element 12, an electric, a capacitor, and a control unit. The power factor correction circuit 1 obtains a collision signal at the back end, and cooperates with the zero current side circuit (zcd) and the -SR flip-flop to generate a period control signal to drive the switching element 12, and the inductance element U and the capacitance element 14 are Modulating the phase of the input power, the work of the correction circuit 1 is known to the general knowledge of the field of technology, so the conventional power factor correction circuit 1 does not repeat the useful life, most of which The failure of the power factor correction circuit is due to the fact that the capacitor element 14 has a relatively fast lifetime degradation under the power fluctuation of the input power for a long period of time, and in order to absorb the power fluctuation, a capacitor element having a large capacitance value must be selected, thereby costing The above-mentioned conventional power factor correction circuit ι is limited by the sorrow of the capacitor, and the electronic component with a long working life is wasteful. For example, the above-mentioned power factor correction circuit is used in the driving circuit for driving the light-emitting diode! At the time, since the light-emitting diode itself has a life of at least 100,000 hours, the power-correcting circuit 1 may be inoperable for several thousand hours due to the sorrow of the capacitor tree (the average life of the capacitor element 201006105) "At this time, the circuit board on which the power factor correction circuit 1 is laid and the light-emitting diodes soldered thereon must be replaced together, so that the light-emitting diode must be used together with the entire circuit when it is less than half of its life. The board is discarded together, causing additional waste and cost increase; by the above example, it can be seen that the life of the conventional power factor correction circuit 1 is limited by the capacitor element 14 as a problem that must be solved. [Explanation] The life of the circuit is corrected in view of the conventional power factor. Limited by the life of the capacitive element, it is therefore an object of the present invention to provide a circuit architecture that improves the lack of conventional knowledge and extends The life of the capacitor element and the power factor correction circuit. φ The present invention is a power factor correction circuit architecture having an inductance component, a capacitor component, a switching component, and a control unit, the control unit generating a The cycle control signal is switched by the switching element, thereby controlling the inductor current of the Lion's inductive component, and the power factor correction circuit further comprises a harmonic modulation unit and a waveform modulation unit, 'the wiper wave variable unit Obtaining the recording power and generating a -harmonic signal by calculation, the waveform modulation unit obtains - returning the teaching and the harmonic extinguishing, and according to the phase of the wave signals, the fine induction machine generates - harmonic medium Signal, the patch touches the width of the job according to the wave driver's job, and the spectrum signal is generated by the multi-filament method of the input power of the input power - Wei, the Zhubo S and the rare electric power equipment were transferred to the post, and the wave of the inductor circuit was tuned to the micro-drive signal in the program of the Zhou Yu-ling signal. Way to reduce the loss Force and power fluctuations of the capacitive element life brother captain, and the choice of the capacitance value of the capacitive element Dayton more (for example membrane capacitance (iv) substituted electrolytic capacitor commonly used conventional circuit) has the advantage of lower cost. [Embodiment]: Referring to FIG. 2, the block diagram of the circuit architecture of the ride, the present invention is a circuit architecture for improving the life of the power factor correction circuit, wherein the power factor correction circuit 1 is applied to a power supply, After the power supply takes an input power and sends it to a rectifier circuit 8', after rectification, the power factor of the input power is modulated by the power factor correction circuit i, and finally sent to the power conversion circuit 9 to generate and output power. The power factor correction circuit 201006105 has an inductance component 13, a capacitor component 14, a switching component 12, and a control unit 11, and the control unit 1 generates a period control signal to drive the switching component 12 to switch. Controlling the inductor current through the inductive component 13 such that the phase of the inductor current is close to the voltage phase across the capacitive component 14 to achieve an effect of increasing the power factor, however, the power factor is corrected for the capacitor element 14 to extend its lifetime. The circuit 1 further includes a spectral modulation unit 2 and a tracking unit 3, and the detection unit 2 obtains the input power and generates a harmonic Wei, Chengxing Modulation Unit 3 obtains the feedback from the input end of the f-channel 1 and records the phase of the L-wave signal to generate a harmonic drive signal. The feedback signal is changed to the secret of the spectrum, and the touch wave drive signal is sent to the control unit η ' _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ And the period control signal drives the switching element 12 to turn on and off to adjust the phase of the crane current, so that the harmonic driving signal can be modulated by the periodic control signal to make the inductor current have a clutter signal. __ bit (that is, the inductor current also has a harmonic component); the above circuit structure is obtained by adding a harmonic signal component to the periodic control signal, and then modulating the inductor current also has the same harmonic signal When the phase, chopping component is added to the inductor current, the fluctuation of the inductor current will change, and the product of the inductor current and the input voltage also changes, so that the power fluctuation of the input power is reduced, and the power that the capacitive component 14 is to absorb. The fluctuation is reduced, thereby avoiding the excessive decay of the capacitive element 14, prolonging the life of the capacitive element 14, and selecting the capacitive element 14 having a smaller capacitance value. In order to implement a circuit for adding harmonic components to the period modulation, the harmonic modulation unit 2 includes more than one multiplier and a subtractor, the multiplier extracts a voltage dividing signal from the input power, and the sub The voltage signals are multiplied to obtain a harmonic. The implementation of the above circuit architecture can be seen in FIG. 4. The harmonic modulation unit 2 has two multipliers 21, 22 from which the two power multipliers 21, 22 are input. The same voltage dividing signal 乂, one of the multipliers 21 multiplies the voltage dividing signals Va to obtain the harmonic of the square of the divided voltage signal, and the other multiplier 22 the harmonic of the quadratic voltage of the divided signal Y2a is multiplied by the voltage division signal % again to obtain the harmonics v3a of the voltage division signal Va, which is sent to the subtractor, and the subtractor is the amplifier 061 and the complex resistors IU, R2, R3 'R4 Constructing, and subtracting the input power from the harmonic v3a by a subtractor to generate the harmonic signal %, so the harmonic signal % is a signal having a third harmonic component; the waveform modulation unit 2 is also Can be a multiplier, the waveform modulation unit 2 will return The signal is multiplied by the harmonic signal Vc to generate the harmonic driving signal, so the harmonic driving signal has the same third harmonic component; in the circuit of FIG. 3, the control unit u uses a comparator to obtain The harmonic drive signal and the current of the switching element 12 are compared to determine the timing of the switching element being turned off. When the detected inductor current is greater than the harmonic driving signal, the comparator outputs a high level. Resetting the output of the SR flip-flop, causing the driving unit to turn off the switching element 12, so that the inductor current is limited to the waveform formed by the harmonic driving signal, so that the inductor current will form a cubic spectrum The waveform of the ingredients. Please refer to FIG. 4-1 and FIG. 4-2, wherein FIG. 4-1 is a current waveform diagram of a conventional power factor correction circuit, and FIG. 4-2 is a current waveform diagram of the above circuit of the present invention; FIG. 4_1 respectively shows a conventional inductor The current 71, a conventional current + value envelope 72, and a conventional current average 73 are controlled by the switching element 12 to be turned on and off, and conventional circuits generate the same Knowing the current peak envelope 72, that is, forcing the current maximum of the switching element 12 to cut off, limiting the conventional inductor current 71 to be smaller than the conventional current peak envelope 72' and obtaining the conventional current average 73 by operation; As shown in FIG. 4_2, the current peak envelope 75 is added with harmonic components, so that the peak value of the inductor current 74 and the current average value 76 form a waveform having harmonic components; please refer to FIG. 5-1 and FIG. 2, FIG. 5-1 is a node waveform diagram of a conventional circuit, and FIG. 5_2 is a node waveform diagram of the present invention; wherein vg is defined as a voltage waveform after input power rectification, v. The output voltage 'va3' defined as the power factor correction circuit 1 is defined as the harmonic generated by the harmonic modulation unit 2, iL is the inductor current; in FIG. 5-1, due to the conventional circuit and having harmonic generation The circuit, so va3 represents its absence in a straight line, the input voltage waveform Vg is a "sine wave", the conventional inductor current iL is a sine wave, so when the input voltage waveform Vg and the conventional inductor current phase modulation When they are close to each other, the power of the bee generated by multiplying them is relatively large, and there is a large drop compared with the lowest value of the power. The power required to be absorbed and released through the capacitive element 14 is also large; see FIG. 5 again. 2. After adding the components of the wave va3, the value of the bee 201006105 of the inductor current iL is shifted from the peak phase of the input voltage waveform vg, so the peak power generated by multiplying the two can be significantly reduced, and the capacitance component 14 needs to be absorbed by the capacitor element 14 The power released is also small, which can avoid the early decline of the capacitor element 14 after long-term charging and discharging, thereby achieving the effect of prolonging the life. By reducing the input power peak by the above circuit, the power fluctuation of the capacitor element 14 to be absorbed and released can be reduced, and the capacitor element 14 having a smaller capacitance value can be selected together, thereby achieving the effect of prolonging the life thereof and avoiding the work. Because the correction circuit 损 is damaged due to the decay of the capacitive element 14 and can be replaced by the capacitance of the capacitor (four) electrolysis f; although the invention has been read and implemented, as described above, Lin _ _ _ _ _ _ _ _ _ Any changes and omissions made by the present invention should be covered by the present invention, and the invention is defined by the scope of the appended patent. In summary, the conventional circuit of the present invention enhances the above-mentioned functions, and should have fully complimented and progressive statutory innovation patent requirements, and proposes that the invention patent application should be approved in accordance with the law, in order to encourage creation, to the sense that Figure 10 is a block diagram of a circuit architecture of the present invention. Figure 3 is a circuit diagram of the circuit of the present invention. Figure 4-1 is a conventional power factor correction circuit. Fig. 4-2 is a current waveform diagram of the present invention. Fig. 5-1 is a waveform diagram of each node of the conventional power factor correction circuit. Fig. 5-2 is a waveform diagram of each node of the present invention. 】
1 .......功因校正電路 11 .......控制單元 12 .......開關元件 13 .......電感元件 14 .......電容元件 2 .......諧波調變單元 3 .......波形調變單元 71 .......習知電感電流 72 .......習知電流峰值包絡線 73 .......習知電流平均值 74 .......電感電流 72 .......電流峰值包絡線 73 .......電流平均值 8 .......整流電路 9 .......電力轉換電路 91.......控制單元1 ....... power factor correction circuit 11 . . . control unit 12 .... switching element 13 .... inductance element 14 .... Capacitive element 2 ... harmonic modulation unit 3 ... waveform modulation unit 71 .... known inductor current 72 .... Peak envelope 73 . . . conventional current average 74 . . . inductor current 72 ... ... current peak envelope 73 ... ... current average 8 .......rectification circuit 9 .... power conversion circuit 91....... control unit