M382691 【新型所屬之技術領域】 本創作係有關一種自激式可調光高功因之電子安 定器，尤指一種驅動功率開關晶體採自激方式無需外 加主動控制元件如ic ’即可達到高功因及調光之功 能’有效的減少電路成本及增加能源使用效率。 【先前技術】 近年來電力電子技術迅速發展，使得安定器裝置得 以縮小化及輕量化’在現行自激式電子安定器，是以 對稱方波（即duty cycle = 0.5 )驅動功率開關晶體，若 欲進行輸出功率調整則採用變頻方式。 電子式安定器若要同時具備高功因及可調光功 能，必須外加1C(外激式）並採雙級或雙級合併成單級之 電力轉換器，使得前級電路負責功因校正，後級控制 輸出功率，也因此造成本的增加及電路的複雜度。然 而，以現行自激式電子安定器所採用的變頻電路，應 用在上述雙級及單級電力轉換器的架構，欲同時達到 高功因及可調光的功能是無法實現的，因為，當頻率 上升時，由於後級諳振電路之特性，欲使輸出電壓下 降，以達輸出功率降低，但此時由前級傳送至後級的 直流電壓（&，圖3所示）會隨著頻率上升而上升，迫使 輸出功率幾乎不變，而無法相有效的調光功能。因 M382691 此，現行自激式電子安定器以變頻方式是無法同 到高功因及可調光之功能，只能兩者取其一。 圖1所示，為市售菲利浦省電燈泡之自激式電子安 定器’此電路不具調光功能，經量測其功因只達〇.6’ 不具現行節能環保之需屯。园1 1卞心南衣。圖2為internati〇nal ⑽心所提供高功因電子安S器電路，在外加ic 後其電路變得複雜，以、具高功因不具調光功能。 φ 【新型内容】 由上述S知現行自激式電子安定器具備電路簡單的優 點’但功能不強；而外激式電子安定器則是功能較強， 但電路複雜且成本高，因此，提出此具備上述兩者之 優點的薪新自激式可調光高功因之電子安定器。 本創作提供一種自激式可調光高功因之電子安定 器《中自S式驅動控制電路為本創作之重點，組成上 讓 包括了一組多阻驅動變壓器、一個可變電阻性元件、 顆極體及一顆濟納二極體。此自激式驅動控制電路 可安置於單級或雙級式的自激式電子安定器，其中， 刚級為直流轉直流之電力轉換器（DC to DC verter)，所輸出的直流電壓作為後級直流轉交流之 換流器（DC to AC inverter)的輸人電源，而上述電力轉 M382691 f器中的功率開關晶體則是經由本創作之自激式驅 制電路所驅動。 <以圖3為例’此新型自激式控制驅動器應用於非對 稱半橋的換流11，經變壓器反射可等效如圖4及圖5 所不。圖6為將此控制器應用於對稱半橋之換流器， 圖7則為此控制器應用於全橋式換流器v 在圖3令，可變電阻性元件<=〇時，其控制功率 開關晶體的驅動波形為對稱方波（duty cycle=〇 5)，此 時滿載功因為0.998。當改變可變電阻性元件時即 則功率開關晶體操作頻率將改變，同時此控制 功率開關晶體的驅動波形不再是對稱方波，經量測操 作在滿載功率3G%日㈣功因為G 996。此自激式驅動控 制電路是同時使用變頻及脈波寬度調變技術（PWM)達 到調光之功能，而前級電感電流操作在不連續導通模 式’則可達高功因。 、 列舉本創作自激式控制驅動電路可應用之實例， 圖8為應用此自激式控制驅動電路於單級非隔離式電 子戈·定器’前級為升降壓電力轉換器結合後級非對稱 半橋換流器。圖9為應用此自激式控制驅動電路於雙 級非隔離式電子安定器，前級為升降壓電力轉換器結 合後級非對稱半橋換流器。圖1〇為應用於雙級隔離式 電子t定器，前級為反馳式電力轉換器結合後級非對 稱半橋換流器。 【實施方式】 圖8為此嶄新自激式可調光高功因之電子安定器的 實現，先選擇主架構前後級之電力電子電路。前級主要 •將電感1的電流設計於不連續導通模式即可達高功 .因。後級設計則當可變電阻性元件足=0時，即此電路 =最大功率輸出，並選定最大功率輸出時所欲操作之頻 率及適當的變壓器匝數比，即可得到串並聯諧振電路中 的^、Cs、cp，接著調整可變電阻性元件，同時量測 輪出之燈管功率，即可得到調光範圍所對應之可變電阻 性元件值的變動範圍。 【圖式簡單說明】 ‘圖1.係市售菲利浦省電燈泡之自激式電子安定器。 •圖2 :係1ntemationalRectifier高功因電子安定器電路。 圖3:係本創作之電路應用於非對稱半橋之換流器之架構圖。 •圖4 : _ 3本創作驅動電路反射至功率_晶私之等效電路。 圖5..係圖3本創作驅動電路反射至功率開關晶體&之等效電路。 圖6:係本創作電路應用於對稱半橋之電子安定器。 圖7:係本創作電路應用於全橋之電子安定器。 圖8 :係本創作電路應用於單級非隔離式之電子安定器。M382691 [New technical field] This is a kind of self-excited dimmable high-power electronic ballast, especially a kind of driving power switch crystal adopts self-excited mode without external active control components such as ic 'can reach high The function of power and dimming 'effectively reduce circuit costs and increase energy efficiency. [Prior Art] In recent years, the rapid development of power electronics technology has enabled the ballast device to be reduced and lightened. In the current self-excited electronic ballast, the power switch crystal is driven by a symmetrical square wave (ie duty cycle = 0.5). In order to adjust the output power, the frequency conversion method is adopted. If the electronic ballast has both high power and dimming functions, it must be added with 1C (external excitation) and combined with two or two stages into a single-stage power converter, so that the pre-stage circuit is responsible for the correction of the power factor. The latter stage controls the output power, which also causes the increase of the present and the complexity of the circuit. However, the inverter circuit used in the current self-excited electronic ballast is applied to the above-mentioned two-stage and single-stage power converter architecture, and it is impossible to achieve high power factor and dimming function at the same time, because when When the frequency rises, due to the characteristics of the post-stage resonant circuit, the output voltage is lowered to reduce the output power, but the DC voltage transmitted from the previous stage to the subsequent stage (&, as shown in Figure 3) will follow. As the frequency rises and rises, the output power is forced to be almost constant, and the effective dimming function cannot be achieved. Because of M382691, the current self-excited electronic ballast can not achieve the same function of high power and dimming in frequency conversion mode, only one of them can be used. As shown in Figure 1, it is a self-excited electronic stabilizer for the Phillips electric bulb in the market. This circuit does not have a dimming function. After measuring the power factor, it only reaches 〇.6’, which does not have the current energy saving and environmental protection needs. Park 1 1 heart Nan clothing. Figure 2 shows the high-power electronic S-circuit provided by the internati〇nal (10) core. The circuit becomes complicated after the addition of ic, and has high power because it does not have dimming function. φ [New content] From the above S, the current self-excited electronic ballast has the advantage of simple circuit 'but the function is not strong; and the external electronic ballast is more powerful, but the circuit is complicated and the cost is high. This is a new electronic self-excited dimmable high-power electronic ballast with the advantages of both. The present invention provides a self-exciting dimmable high-power electronic stabilizer "the S-drive control circuit is the focus of the creation, and consists of a set of multi-resistance drive transformers, a variable resistive component, A polar body and a Zener diode. The self-excited drive control circuit can be disposed in a single-stage or two-stage self-excited electronic ballast, wherein the DC-DC verter is a DC-DC power converter, and the output DC voltage is taken as a rear The input power of the DC to AC inverter is driven by the self-excited drive circuit of the above-mentioned power conversion M382691. < Take FIG. 3 as an example. The novel self-excited control driver is applied to the commutation 11 of the asymmetric half bridge, and the transformer reflection can be equivalent as shown in FIGS. 4 and 5. Figure 6 shows the controller applied to the symmetrical half-bridge converter, and Figure 7 shows the controller applied to the full-bridge converter v. In Figure 3, when the variable resistive element <=〇, The driving waveform of the control power switch crystal is a symmetrical square wave (duty cycle=〇5), and the full load is at 0.998. When the variable resistive element is changed, the power switching crystal operating frequency will change, and the driving waveform of the control power switching crystal is no longer a symmetrical square wave, and the measuring operation is performed at the full load power of 3 G% (four) due to G 996. This self-excited drive control circuit uses both frequency conversion and pulse width modulation (PWM) to achieve dimming, while pre-inductor current operation in discontinuous conduction mode is high. An example of the application of the self-excited control drive circuit can be applied. Figure 8 shows the application of the self-excited control drive circuit to the single-stage non-isolated electronic Ge setter. Symmetrical half bridge converter. Figure 9 shows the application of this self-excited control drive circuit to a two-stage non-isolated electronic ballast. The front stage is a step-up and step-down power converter combined with a rear-stage asymmetric half-bridge converter. Figure 1 shows the application of a two-stage isolated electronic t-converter. The front stage is a flyback power converter combined with a rear-stage asymmetrical half-bridge converter. [Embodiment] FIG. 8 shows the realization of the new self-excited dimmable high-power electronic ballast, and first selects the power electronic circuit of the front and rear stages of the main structure. The main stage is mainly • The current of the inductor 1 is designed to be in the discontinuous conduction mode to achieve high power. The latter design is when the variable resistive component is =0, that is, the circuit = maximum power output, and the frequency of the desired operation at the maximum power output and the appropriate transformer turns ratio can be obtained in the series-parallel resonant circuit. ^, Cs, cp, and then adjust the variable resistive element, while measuring the power of the rounded tube, you can get the range of variation of the variable resistive element value corresponding to the dimming range. [Simple description of the diagram] ‘Figure 1. A self-excited electronic ballast for a commercially available Phillips bulb. • Figure 2: 1NtemationalRectifier high power factor electronic ballast circuit. Figure 3: Architecture diagram of the circuit of the present invention applied to an inverter of an asymmetric half bridge. • Figure 4: _ 3 This authoring drive circuit is reflected to the equivalent circuit of the power _ crystal private. Figure 5. Figure 3 is the equivalent circuit of the creation drive circuit reflected to the power switch crystal & Figure 6: The electronic ballast of the symmetrical half bridge is used in this creative circuit. Figure 7: This is the application of the circuit to the full bridge electronic stabilizer. Figure 8: This is a circuit that is applied to a single-stage, non-isolated electronic ballast.