六、發明說明： 【發明所屬之技術領域】 一種具備功因校正之轉換器的元件參數配置方法，特別是一種改 變功因校正電路運作特性而達到適用電容值較小的儲能電容的方法。 【先前技術】 電子電路產業中所熟知的功因校正電路（power Factor correetiQn， 簡稱為PFC)係用於^:善輸入電力功率因數的重要電路，因此主要常 見於電源供應H等供電賴，或者内建於各種電氣設備之供電電路 中，現今常見的功因校正電路包括了雙級式以及單級式，雖然雙級式 可提供較高的功率因數與較低的總諧波失真（to-distortion) ’但單級式可提供較單純的電路與較低的成本因此各有其 適用的範嘴，但不論是那-種功因校正電路，其組成元件中必定包ς -儲能電容（常叫作「㈣eapadtor」）做為調節能量之用途；而以單 級式功因校正電路為例，其概要電路架構可參閱中華民國專利公告第 561675號「具有緩振電路之功因修正電路」，其中該前案的圖}為最基 本的功因修正電路架構，由—電感器⑽）…二極體（⑽）、一電 容器（109)以及一開關（106)所構成，其中該電容器（1〇9)在功因 修正電路中即為一般俗稱的儲能電容（bulk capacito小一輸入電路 (101)送人—絲錢電力，該開關導通時紐動直流電力 之功率儲存於該電容器（則中，同時該電容器⑽）則釋出功率 至一負載輸出端⑽）。該開關（106)截止時該電感器⑽）則將 功率傳送至該電㈣（1G9)，在如此的運倾式下形成-調變電力送 至該負載輸ίϋ端（1G5)’該功g)修正電路之卫作原理為該技術領域具 一般知識者所熟知。 然而上述之電源供應器為了要達到「IEC 1000-3-2」的標準，在母 線電壓Vbus (busvoltage，亦即主要傳送電力之路徑上的電壓）上的低 頻漣波（lowfrequencyripple)必須要小，且為了達到較高的功φ因數， 上述的母線電壓Vbus必須要提高，因此習知技術中只有使用電解電容 可以達到上述之目的，因而普遍的在功因校正電路中使用電解電容。 另一方面，為了提高變壓器中鐵芯的使用率以及單迴圈控制的穩定度 而使該功因校正電路工作於非連續電流模式（disc〇ntinu〇us current mode , DCM) 〇 惟，上述之電解電容的壽命較短，固態電解電容的壽命在丨仍它時 估計只有幾千小時的壽命，而液態電解電容則更低，因此以電解電容 作為功因校正電路的儲能電容時，該電解電容的使用壽命將直接限制 了該功因校正電路的使用壽命，以驅動發光二極體的驅動電路為例， 由於發光—極體本身至少具有十萬小時的壽命，但由於該儲能電容的 衰減，造成該功因校正電路可能幾千小時就已無法工作（該儲能電容 的平均壽命）’此咖設該功目校正電_電路板以及焊接於其上的發 光-極體皆必須-併更換’使該發光二極體使用還不到其壽命一半的 時候就必須制整個f路板—同廢棄，造綱外的浪f與成本增加； 藉由上述鮮可知，f知功隨正電路的壽命受限於該舰電容為必 須解決的問題。 【發明内容】 由於轉換器之功因校正電路壽命受限於該儲能電容，因此本案之 目的在於提出-獅置轉換電路之方法，透祕定轉換電路中各元件 之關係而達到在保證功率因數滿足規範且不變動功因校正電路之電路 架構的讀下提〶容壽命，進而延長轉㈣壽命的功效 f案為-種具備拥校正之轉換^的元件參數配置方法其中該 轉換器具有-功因校正電路將—輸人電力轉換為—調變電力，且該轉 ^器更具有-變壓器轉換該調變電力形成__輸出電力輸出至一負載。 其中本案之方法包括—觀電容配置步驟、—儲能電感配置步驟以及 一驗證步驟。其中該儲能電容配置步驟預先設定一試驗電壓以及一低 於該試驗電壓之額定母線電壓，並依據該試驗電壓決定一儲能電容之 參數，而且應用該儲能電容在轉換器中提供該額定母線電壓。該儲能 電感配置步驟則先選定該變壓器之一次側線圈之電感值，並決定一儲 能電感搭配該一次側線圈在非連續電流模式下工作之電感值，令該轉 換器之功因校正電路運作在非連續電流模式（discontinuous current mode ’ DCM)下’最後驗證該功因校正電路之配置是否令功率因數超 過0.9。該轉換器利用可適配於該試驗電壓的儲能電容供應低於該試驗 電壓的額定母線電壓，藉此令該儲能電容吸收較少的電壓波動，並且 透過限定該轉換器運作於非連續電流模式，進而可令設計者選用電容 值較小的電容元件作為儲能電容，尤其是可令設計者選用薄膜電容取 代習知電路㈣的f解電容，更進-步產生的效果是延長該儲能電容 的壽命，同時亦令該轉換器的壽命不需受限於該儲能電容。 綜上所嗥，本案可使用較小的電容元件作為儲能電容，進一步可 選用薄膜電容.而達到延長功因校正電路壽命的優點。 【實施方式】 本案為一種具備功因校正之轉換器的元件參數配置方法，請參閱 圖1，如圖所示該轉換器至少具有一功因校正電路3以及一變壓器4, ^中柄’正電路3係以非連續電細式調變—輸人電力形成—直 w之調變電力’並透過__變壓器4轉換該調變電力形成—輸出電力7 輸出至—負載。且該轉換器整體之電路架構更可包含一連接一電力來 源1取得該輸入電力之整流電路2以及一連接於該變壓器4二次側線 圈的輪出單元5’其中該整流電路2取得該輸人電力後將該輸入電力調 變為波動之直流電’磁動之輸人電力送至該紐電路2後端連接的 力因校正電路3。該輸入電力通過功因校正電路3調變為該調變電力後 通過趟翻4’並由該輸丨單元5取得該變㈣4二捕的感應電力 透過穩壓、濾波或者阻抗匹配等習知電路而提供該輸出電力7以驅動 負載。其中該整流電路2以及該輸出單元5之型態以及運作模式為業 界所習知，且並非本案所專注之重點，故不再贅述。 上述之功因校正電路3中包含一儲能電容32、一儲能電感31、一 開關元件33以及控制該開關元件33啟閉週期的一控制單元6,其中該 開關元件33 _定該輸入電力流通的方向，也就是決定該儲能電容32 的充放電職。又’該變壓^ 4之—次側線關樣需用__開關決定傳 送至該二次側線圈的功率，而在本案之電路示意圖中，該功因校正電 路3之開關元件33亦可一併控制該變壓器4傳送之功率，該功因校正 電路3與變麼器4共用開關元件Μ之技術已為業界所熟知，故本案亦 不再詳細解釋其運作。該雛電容32及該航電感31的參數對功率 因數的影響極顯著’因此本案提出該些元件參數的配置方法，其中該 方法包括了數個步驟。步驟-:—儲能電細置步驟，該步驟是預設 定-4驗電壓以及-低於賴驗電壓之母線，並依據該試驗 電壓決定該儲能電容32之參數（如圖2所示之流程—丨⑽），且應用該 儲能電容32提供魏定母線電壓。步驟二：雛電感配置步驟，係 選定該變壓器4之-次侧線圈之繞圈數，並蚊—儲能電感31搭配該 一次侧賴在非連續電麵式下卫作之電紐（如圖2所示之流程二 2〇0)。步驟三：一驗證步驟，係依據額定輸出規格配置輸出單元$ (如 圖2所示之流程三3〇〇)，並驗證該轉換器運作之神因數是否大於〇 9 (如圖2所不之流程四刪；若否，則回到步驟—調整該儲能電容η 之參數。若驗證該轉換器運作之功率因數大於〇 9，則繼續依據安規或 者客戶需求祕置其賊路單元（如圖2 _之流程五)，在此所 述的其他電路單元如保護f路、發光二極體燈號及相關電路接地線 =等，程五500所述的其他電路單元為設計轉換器（或電源供應 15 )業者所習知之技藝，不再贅述。 在設計轉換器的習知過程中，設計者必預先設定了該功因校正電 路3的額定之母線電壓（一般較常見該額定母線電壓為38〇v)，並配 置耐壓值辆母線電壓的習知儲能元件’令該習知儲能元件輸出的調 變電力恰可敎制攸定之母料S。在此必須再奴義清楚該母 線電壓係-電壓位準，而該功因校正電路3輸出調變電力之平均電壓 需升壓到達該母線電壓的位準。 本案之步驟一另設定一高於該額定母線電壓的試驗電壓，並依據 該試驗電壓之電壓絲蚊該儲能電容32的參數，透職試驗電壓決 定之儲能電容32再應用於該轉換器中，利用該控制單元6切換該開關 元件33運作而使5亥儲此電谷32充電並輸出到達該母線電壓的調變電 力。由於步驟一是透過較高之試驗電壓決定該儲能電容32，因此該儲 能電容32所輸出的調變電力會有些微波動，代表該儲能電容32吸收 較少的輸人電力波動，因此可_電容錄小的電容元件作為儲能電 容32。而步驟二中設定該儲能電感31的電感量需搭配該變壓器4 一次 側之繞匝數，而令該功因校正電路3運作於非連續電流模式，其中該 儲能電感31的電感量決定了通過該儲能電感31的電流變動速度，且 通過該變壓器4 一次侧線圈的繞圈數亦影響著電流上升與下降的速 度，故先選定該變壓器4之一次侧線圈之繞圈數，再以工作於非連續 電流模式為目標而選定該儲能電感31的電感值（即圖2中的流程二 200)。此時請先參閱圖！與圖4，圖4為圖1中各電節點的波形圖，電 流itp、電流its分別代表留過該變壓器4 一次側、二次側線圈的電流， 亦即該變壓器4 -次側、二次側功率傳輸的過程，而特別需指出的是 電流lib為流經該儲能電感31的電流’在每一個完整的工作週期之中電 "’Liib在上升後必定下降到零以後才會再開始下一個週期而滿足工作 在非連續電流模式之需求。而該變壓器4 一次侧線圈選定後需考慮到 該變壓器4的變壓比而決定變壓器4的二次側線圈，該變壓器4的二 1374348 次側線酬連接必要的輸出單元s，進-步提供穩定的輸出電力7。但 如此功因校正電路3的配置更需透過驗證，判斷該轉換器的功率因數 是否大於0.9，若否則回到步驟一重新決定儲能電容32之參數；若該 轉換器之功率因數大於0.9則可繼續配置其他電路單元（如圖2所述之 流程五500)。 在上述之配置方法中更可插入附加步驟，以令該轉換器之設計更 加完善’其中上述各步驟中更可包括一母線電壓驗證步驟，該母線電 壓驗證步驟係在接續步驟-之後’在選定該儲能電容32後觸該儲能 電容32輸出之調變電力電壓是否高於該輸入電力電壓。若是，則接續 執行步驟二；若否’則回到步驟一重新決定適當之健能電容32。而步 φ 驟二之後更包括一控制迴路設計步驟，該控制迴路設計步驟設計該控 制迴路提供-提南低頻;^+段]^抑制該功目校正電路3輸出之低頻 成份。上述各步驟的實施流程請參閱圖3所示，其中流程一 1〇〇決定 該儲能電容32參數彳 1接續-附加步驟—m職職雛電容η提 供之母線電壓是㈣於職人電力之電壓，若未高於該輸人電力電壓 則回到前步称重新決定該健成電谷32的參數；若驗證母線電壓高於 輸入電力之電壓則接續決定儲能電感31之參數、配置該變壓器4 一次 側、二次側的繞圈數以及配置該輸出單元5 (如圖3中的流程二2〇〇、 流程三300)。而流程三300後則接續一附加步驟二3〇1配置該控制電 路6，且令該控制電路6提高低頻增益，最後則驗證功率因數是否大於 〇·9 (如圖3中的流程四400)，並依據驗證結果而重新回到步驟一或接 續配置其他電路單元（如圖3中的流程五5〇〇)。 經過上述方法配置_校正電路3的各元件後，由於該雛電容 32的參數係依據該試驗電壓而決定的，且該試驗電壓高於設定的母線 電壓。而該_校正 3舰生_㈣力與輸人電力的波形圖可 參閱圖5，其中V<ac代表輸入電力，在本圖中明顯可見該輸入電力為 8 1374348 交流電，而透過該整流電路2進入該功因校正電路3後所輸出之調變 電力可見於圖5中的Vcb，該調變電力的平均值皆到達該母線電壓 (VCb_ave) ’該母線電壓必需局於該輸入電力之電墨。其中，由於步驟 一是透過較高之試驗電壓決定該儲能電容32,因此該儲能電容32所輸 出的調變電力會有些微波動，代表該儲能電容32吸收較少的輸入電力 波動，因此可選用電谷值較小的電容元件作為儲能電容％❶尤其是可 令設計者選用薄膜電容取代習知電路常用的電解電容，更進一步產生 的效果疋延長該儲能電容32的壽命，同時亦令該轉換器的壽命不需受 限於該健能電容32» • ，综上所述’上述之方法可令該轉換器使用電容值較小或是壽命較 長的電容器（如薄膜電容）作為功因校正電路3的储能電容32使用。 而上述之方法可細在賴n (eGnverte小適㈣（ad啊）或電源 供應器（powersupply)中’且特別適用於發光二極體光源的驅動點燈 電路中。 雖然本發明已續佳實施觸露如上，織並_以限定本發 明。任何熟習此技藝者’在不脫離本發明之精神和範圍内，而所作之 二許更動與;?轉’皆應涵蓋於本發明巾，因此本發明之保 • 後附之申請專利範圍所界定者為準。 綜上所述，本發明較習知之創作增進上述功效，應已充分符合新 賴性及進步性之法定創新專利要件，妥依法提出申請，懇請責局核 ' 准本件發明專利申請案，以勵創作，至感德便。 " 9 1374348 【圖式簡單說明】 圖1為該轉換器之電路示意圖。 圖2為本案之步驟方塊圖一。 圖3為本案之步驟方塊圖二。 圖4為圖1之各電路節點波形圖。 圖5為該母線電壓與輸出電力之波形圖。 【主要元件符號說明】 1 ......電力來源 2 ......整流電路 3 ......功因校正電路 31 ......儲能電感 32 ......儲能電容 33 ......開關元件 4 ......變壓器 5 ......輸出單元 6 ......控制單元 7 ......輸出電力 100 ......流程一 200 ......流程二 300 ......流程三 400 ......流程四 500 ......流程五 101 ......附加步驟一 301 ......附加步驟二VI. Description of the Invention: [Technical Field of the Invention] A component parameter configuration method of a converter having a power factor correction, in particular, a method of changing a function of a power factor correction circuit to achieve a storage capacitor having a small capacitance value. [Prior Art] A power factor correction circuit (PFC), which is well known in the electronic circuit industry, is used as an important circuit for inputting power factor of power. Therefore, it is mainly used in power supply such as power supply H, or Built into the power supply circuit of various electrical equipment, the common power correction circuit nowadays includes two-stage and single-stage, although the two-stage can provide higher power factor and lower total harmonic distortion (to- Distortion) 'But single-stage can provide a simpler circuit and lower cost, so each has its own applicable mouth, but no matter which kind of power correction circuit, its components must be packaged - storage capacitor ( Often referred to as "(4) eapadtor") for the purpose of regulating energy; and the single-stage power factor correction circuit is taken as an example. The schematic circuit structure can be referred to the Republic of China Patent Bulletin No. 561675 "A power factor correction circuit with a damper circuit" The picture of the previous case is the most basic power correction circuit architecture, consisting of an inductor (10), a diode (10), a capacitor (109), and a switch (106). The capacitor (1〇9) is a commonly known storage capacitor in the power factor correction circuit (bulk capacito small one input circuit (101) gives the money-silver power, when the switch is turned on, the power of the DC power is stored in The capacitor (then, at the same time the capacitor (10)) releases power to a load output (10). When the switch (106) is turned off, the inductor (10) transmits power to the electric (4) (1G9), and in such a tilting mode, a modulated power is sent to the load (1G5). The principle of the modified circuit is well known to those of ordinary skill in the art. However, in order to achieve the "IEC 1000-3-2" standard, the above-mentioned power supply must have a low frequency ripple on the bus voltage Vbus (bus voltage, that is, the voltage on the path of the main transmission power). In order to achieve a higher power φ factor, the above-mentioned bus voltage Vbus must be increased. Therefore, in the prior art, only the use of an electrolytic capacitor can achieve the above purpose, and thus an electrolytic capacitor is generally used in the power factor correction circuit. On the other hand, in order to improve the utilization rate of the iron core in the transformer and the stability of the single loop control, the power factor correction circuit operates in a discontinuous current mode (DCM), the above The life of the electrolytic capacitor is short. The life of the solid electrolytic capacitor is estimated to be only a few thousand hours of life, while the liquid electrolytic capacitor is lower. Therefore, when the electrolytic capacitor is used as the energy storage capacitor of the power correction circuit, the electrolysis The service life of the capacitor directly limits the service life of the power correction circuit. For example, the driving circuit of the LED is driven. Since the light-emitting body itself has at least 100,000 hours of life, due to the storage capacitor Attenuation, causing the power to be corrected due to the correction circuit may not work for thousands of hours (the average life of the storage capacitor) 'this coffee set power correction circuit board and the light-polar body soldered on it must be - And replace the 'when the use of the light-emitting diode is less than half of its life, it must be made of the entire f-board - with the waste, the wave outside the building and the cost increase; Fresh understood, f life with known positive power circuit is limited by the capacitance of the ship must be solved. SUMMARY OF THE INVENTION Since the power of the converter is limited by the storage capacitor life, the purpose of the present invention is to propose a method of the lion conversion circuit, which can achieve the guaranteed power in the relationship between the components in the conversion circuit. The factor satisfies the specification and does not change the readout life of the circuit structure of the power correction circuit, thereby prolonging the life of the turn (four) life. The case is a component parameter configuration method with a conversion of the correction ^ where the converter has - The power factor correction circuit converts the input power into the modulated power, and the converter further has a transformer that converts the modulated power to form an output power output to a load. The method of the present invention includes: a capacitor configuration step, a storage inductor configuration step, and a verification step. The storage capacitor configuration step presets a test voltage and a rated bus voltage lower than the test voltage, and determines a parameter of the storage capacitor according to the test voltage, and applies the storage capacitor to provide the rated value in the converter. bus voltage. The energy storage inductor configuration step first selects the inductance value of the primary side coil of the transformer, and determines a storage inductor with the inductance value of the primary side coil operating in the discontinuous current mode, so that the converter's power factor correction circuit Operating in a discontinuous current mode (DCM), it is finally verified whether the configuration of the power factor correction circuit causes the power factor to exceed 0.9. The converter supplies a rated bus voltage lower than the test voltage using a storage capacitor adaptable to the test voltage, thereby causing the storage capacitor to absorb less voltage fluctuations and operating the discontinuity by limiting the converter The current mode, in turn, allows the designer to select a capacitor element with a smaller capacitance value as the storage capacitor. In particular, the designer can select a thin film capacitor instead of the f-capacitor of the conventional circuit (4). The effect of the further step is to extend the effect. The life of the storage capacitor also makes the life of the converter not limited by the storage capacitor. In summary, in this case, a smaller capacitive component can be used as the storage capacitor, and a thin film capacitor can be further selected to achieve the advantage of prolonging the life of the power correction circuit. [Embodiment] The present invention is a component parameter configuration method of a converter with power factor correction. Referring to FIG. 1, the converter has at least one power factor correction circuit 3 and a transformer 4 as shown in the figure. The circuit 3 is modulated by a non-continuous electric fine-modulation-input power generation--transformed power of straight-w and converted by the transformer 4 to convert the modulated power to form-output power 7 to the load. The circuit structure of the converter may further include a rectifier circuit 2 connected to the power source 1 for obtaining the input power, and a turn-out unit 5' connected to the secondary side coil of the transformer 4, wherein the rectifier circuit 2 obtains the input After the human power is turned on, the input power is converted into a fluctuating direct current. The magnetic input power is sent to the force correction circuit 3 connected to the rear end of the circuit 2 of the circuit. The input power is converted into the modulated power by the power factor correction circuit 3, and the conventional circuit such as voltage regulation, filtering, or impedance matching is obtained by flipping 4' and obtaining the induced power of the variable (4) 4 and 2 catches by the power supply unit 5. The output power 7 is supplied to drive the load. The type and operation mode of the rectifier circuit 2 and the output unit 5 are well known in the industry, and are not the focus of the present application, and therefore will not be described again. The power factor correction circuit 3 includes a storage capacitor 32, a storage inductor 31, a switching element 33, and a control unit 6 for controlling the opening and closing period of the switching element 33, wherein the switching element 33_determines the input power The direction of circulation, that is, the charge and discharge of the storage capacitor 32 is determined. Moreover, the voltage of the secondary side is determined by the __ switch, and the power transmitted to the secondary side coil is determined. In the circuit diagram of the present case, the switching element 33 of the power correction circuit 3 can also be used. The power transmitted by the transformer 4 is controlled, and the technique for sharing the switching element between the correction circuit 3 and the transformer 4 is well known in the industry, and the operation of the present invention will not be explained in detail in this case. The parameters of the capacitor 32 and the aeronautical inductance 31 have a significant influence on the power factor. Therefore, the method of configuring the component parameters is proposed in the present invention, wherein the method includes several steps. Step-:--Storage energy fine-setting step, the step is pre-set-4 test voltage and - below the busbar of the voltage, and determine the parameter of the storage capacitor 32 according to the test voltage (as shown in FIG. 2) Flow—丨(10)), and the storage capacitor 32 is applied to provide a Weiding bus voltage. Step 2: The step of configuring the inductance of the chick is to select the number of turns of the secondary-side coil of the transformer 4, and the mosquito-storage inductor 31 is matched with the electric button of the primary side in the discontinuous electric-surface type. Process 2 shown in 2 is 2〇0). Step 3: A verification step is to configure the output unit $ according to the rated output specification (flow 3 3 shown in Figure 2), and verify whether the god factor of the converter is greater than 〇9 (as shown in Figure 2) The process is deleted; if not, the process returns to the step of adjusting the parameter of the storage capacitor η. If the power factor of the converter operation is verified to be greater than 〇9, then the thief unit is kept secret according to the safety regulations or customer requirements (as shown in the figure). 2 _ process 5), other circuit units described herein such as protection f-channel, LED light source and related circuit ground line = etc., other circuit units described in Cheng 5 500 are designed converters (or power supplies) Supply 15) The skill that the industry knows is not repeated. In the conventional process of designing the converter, the designer pre-sets the rated bus voltage of the power factor correction circuit 3 (generally the rated bus voltage is 38 〇v), and the conventional energy storage element of the voltage of the busbar voltage is configured to make the modulated power output of the conventional energy storage component exactly the predetermined masterbatch S. The busbar must be clarified again. Voltage system - voltage level, and The power factor correction circuit 3 outputs an average voltage of the modulated power to be boosted to reach the level of the bus voltage. Step 1 of the present invention further sets a test voltage higher than the rated bus voltage, and according to the voltage of the test voltage, the mosquito The parameter of the storage capacitor 32, the storage capacitor 32 determined by the test voltage is applied to the converter, and the control unit 6 is used to switch the operation of the switching element 33 to charge the battery 32 and output it. The power of the bus voltage is modulated. Since the first step is to determine the storage capacitor 32 through a higher test voltage, the modulated power outputted by the storage capacitor 32 may be slightly microwaved, indicating that the storage capacitor 32 is absorbed. The input power fluctuation is small, so the capacitance component of the capacitor can be used as the storage capacitor 32. In the second step, the inductance of the energy storage inductor 31 needs to be matched with the number of turns of the primary side of the transformer 4, and The power factor correction circuit 3 operates in a discontinuous current mode, wherein the inductance of the energy storage inductor 31 determines the current fluctuation speed through the energy storage inductor 31, and passes through the transformer 4 primary side coil The number of turns also affects the speed at which the current rises and falls. Therefore, the number of turns of the primary side coil of the transformer 4 is selected first, and then the inductance value of the energy storage inductor 31 is selected to operate in the discontinuous current mode (ie, In Figure 2, the flow is 200). At this time, please refer to the figure! and Figure 4, Figure 4 is the waveform diagram of each electrical node in Figure 1, the current itp, current it represents the primary side of the transformer 4, twice The current of the side coil, that is, the process of power transmission of the secondary side and the secondary side of the transformer, and it is particularly pointed out that the current lib is the current flowing through the energy storage inductor 31 'in each complete duty cycle The electric "'Liib must fall to zero after rising and then start the next cycle to meet the demand for working in the discontinuous current mode. The transformer 4 primary side coil must be selected to take into account the transformer 4 transformation ratio And determining the secondary side coil of the transformer 4, the two 1374348 secondary side lines of the transformer 4 are connected to the necessary output unit s, and the step-by-step provides stable output power 7. However, the configuration of the power factor correction circuit 3 needs to be verified to determine whether the power factor of the converter is greater than 0.9. Otherwise, return to step 1 to re-determine the parameters of the storage capacitor 32; if the power factor of the converter is greater than 0.9 Other circuit units can continue to be configured (Scheme 5, 500 as described in Figure 2). In the above configuration method, an additional step can be inserted to make the design of the converter more perfect. [The above steps may further include a bus voltage verification step, and the bus voltage verification step is selected after the subsequent step-after The energy storage capacitor 32 then touches whether the modulated power voltage output by the storage capacitor 32 is higher than the input power voltage. If yes, proceed to step 2; if no, go back to step 1 and re-determine the appropriate health capacitor 32. And after step φ, the second step further comprises a control loop design step, the control loop design step is designed to provide the control loop to provide a low frequency component; the ^+ segment] ^ suppresses the low frequency component of the output of the power correction circuit 3. The implementation process of the above steps is shown in Figure 3, where the process 1〇〇 determines the storage capacitor 32 parameter 彳1 connection-additional step-m service voltage η provides the bus voltage is (four) the voltage of the employee power If it is not higher than the input power voltage, return to the previous step to re-determine the parameters of the Jiancheng electricity valley 32; if the voltage of the bus voltage is higher than the voltage of the input power, the parameters of the energy storage inductor 31 are determined, and the transformer is configured. 4 The number of turns on the primary side and the secondary side and the output unit 5 (as shown in Figure 2, Flow 2, Flow 3, 300). After the process 300, an additional step 2 is performed to configure the control circuit 6, and the control circuit 6 is configured to increase the low frequency gain, and finally verify whether the power factor is greater than 〇·9 (see the flow 400 in FIG. 3). And according to the verification result, return to step one or continue to configure other circuit units (as shown in process 5 in FIG. 3). After the components of the correction circuit 3 are arranged by the above method, the parameters of the capacitor 32 are determined according to the test voltage, and the test voltage is higher than the set bus voltage. The waveform diagram of the _correction 3 _ (four) force and input power can be seen in Figure 5, where V < ac represents the input power, which is clearly visible in the figure, the input power is 8 1374348 AC, and through the rectifier circuit 2 The modulated power output after entering the power factor correction circuit 3 can be seen in Vcb in FIG. 5, and the average value of the modulated power reaches the bus voltage (VCb_ave). The bus voltage must be in the ink of the input power. . Wherein, since the first step is to determine the storage capacitor 32 through a higher test voltage, the modulated power outputted by the storage capacitor 32 may be somewhat microwaved, indicating that the storage capacitor 32 absorbs less input power fluctuations. Therefore, a capacitor element having a smaller electric valley value can be selected as the storage capacitor %. In particular, the designer can select a thin film capacitor to replace the electrolytic capacitor commonly used in the conventional circuit, and further has the effect of prolonging the life of the storage capacitor 32. At the same time, the life of the converter is not limited by the energy capacity 32» • , in summary, the above method can make the converter use a capacitor with a small capacitance value or a long life (such as a film capacitor). It is used as the storage capacitor 32 of the power factor correction circuit 3. The above method can be finely applied to the driving lighting circuit of the light source diode (eGnverte) or the power supply, and is particularly suitable for the driving light circuit of the light emitting diode light source. Although the invention has been continuously implemented The present invention is to be construed as being limited to the scope of the invention, and is intended to be included in the scope of the present invention. The invention is defined by the scope of the patent application. In summary, the above-mentioned functions of the present invention enhance the above-mentioned functions, and should fully comply with the statutory innovation patent requirements of new and progressive nature. Apply, please blame the Bureau for the approval of the invention patent application, to encourage creation, to the sense of virtue. " 9 1374348 [Simple diagram of the diagram] Figure 1 is the circuit diagram of the converter. Figure 2 step block of the case Figure 1. Figure 3 is a block diagram of the present invention. Figure 4 is a waveform diagram of each circuit node of Figure 1. Figure 5 is a waveform diagram of the bus voltage and output power. [Main component symbol description] 1 ..... Power source 2 ... rectifier circuit 3 ... power factor correction circuit 31 ... energy storage inductor 32 ... storage capacitor 33 ... switching element 4 ... transformer 5 ... output unit 6 ... control unit 7 ... output power 100 ... flow one 200 ... Process 2 300 ... Process 3 400 ... Process 4 500 ... Process 5 101 ... Additional Step 1 301 ... Additional Step 2