TWI420779B - Electrical energy dispatching circuit with multi-inputs - Google Patents
Electrical energy dispatching circuit with multi-inputs Download PDFInfo
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Description
本發明係關於一種電源處理電路，特別是關於一種具有多輸入端之電源處理電路。The present invention relates to a power processing circuit, and more particularly to a power processing circuit having multiple inputs.
一般而言，直流至交流電能轉換器可以將綠色能源，諸如：太陽能、風能或燃料電池等綠色能源所產生電力直接轉換成交流電供用戶端使用，由於該綠色能源為一不穩定之能源，因此往往需要配合市電併聯運轉，且必須在該綠色能源輸出端設置一儲能單元，如蓄電池，以作為電能之緩衝及蓄能，當該綠色能源因環境限制而無法持續供應電能時，得以接著由蓄存在該儲能單元內之直流電源進行供應，並透過該直流至交流電能轉換器轉換該直流電源以穩定輸出交流電。In general, the DC to AC power converter can directly convert the power generated by green energy, such as solar energy, wind energy or fuel cells, into AC power for the user to use. Since the green energy is an unstable energy source, Therefore, it is often necessary to cooperate with the commercial power supply in parallel, and an energy storage unit, such as a battery, must be disposed at the green energy output end to serve as a buffer and energy storage for the electric energy. When the green energy source cannot continuously supply electric energy due to environmental restrictions, it can be continued. The DC power source stored in the energy storage unit is supplied, and the DC power source is converted by the DC to AC power converter to stabilize the output AC power.
請參照第1圖所示，其揭示一種習用太陽電池之電源處理電路，其包含一電源組7、一直流電源接收單元8及一儲能單元9。該電源組7藉由一多芯電纜線6並聯連接該直流電源接收單元8及該儲能單元9，以便該電源組7可提供一電源予該直流電源接收單元8，以供應該直流電源接收單元8之電源所需；另一方面，該直流電源亦可對該儲能單元9進行供電儲能。其中該儲能單元9包含一緩衝電容91及一蓄電池92，該緩衝電容91用以緩衝該電源組7及該直流電源接收單元8之間之能量傳遞；而該蓄電池92用以蓄集該電源組7之電能。其中該電源組7及該儲能單元9之間另設有一防逆流二極體D，以防止該儲能單元9之電能回流至該電源組7。Referring to FIG. 1 , a power processing circuit for a conventional solar cell is disclosed, which comprises a power supply group 7 , a DC power receiving unit 8 and an energy storage unit 9 . The power pack 7 is connected in parallel to the DC power receiving unit 8 and the energy storage unit 9 by a multi-core cable 6 so that the power pack 7 can provide a power to the DC power receiving unit 8 to supply the DC power receiving. The power supply of the unit 8 is required; on the other hand, the DC power supply can also supply power to the energy storage unit 9. The energy storage unit 9 includes a buffer capacitor 91 and a battery 92. The buffer capacitor 91 is used to buffer energy transfer between the power pack 7 and the DC power receiving unit 8. The battery 92 is used to accumulate the power. Group 7 power. An anti-backflow diode D is further disposed between the power pack 7 and the energy storage unit 9 to prevent the power of the energy storage unit 9 from flowing back to the power pack 7 .
為方便說明，在此，以該電源組7為一太陽能電池為例進行電路結構及操作說明；配合第1圖，該電源組7係包含兩排並聯連接成一個輸出的太陽能電池模組，分別為由其中一排太陽能電池模組構成之一第一電源71及由另一排太陽能電池模組構成之一第二電源72，該第一電源71與該第二電源72係並聯連接，以便可分別透過該多芯電纜線6供應電能予該直流電源接收單元8及該儲能單元9。For convenience of explanation, here, the power supply group 7 is taken as a solar battery as an example for circuit structure and operation description; with the first figure, the power supply group 7 includes two rows of solar battery modules connected in parallel to form one output, respectively The first power source 71 and the second power source 72 are connected in parallel by one of the first power source 71 and the second power source 72. Power is supplied to the DC power receiving unit 8 and the energy storage unit 9 through the multi-core cable 6.
請參照第2圖所示，其揭示該電源組7之第一電源71及第二電源72之等效電路。該第一電源71包含一第一電流源711、一第一等效二極體組712及一第一旁路二極體713，其中該第一電流源711係模擬該太陽能電池受光時的短路電流；該第一等效二極體組712係模擬該太陽能電池無受光時的阻抗，該第一電流源711、該第一等效二極體組712及該第一旁路二極體713相互並聯連接。該第一等效二極體組712為該第一電源71由多個太陽能電池單元無受光時串聯之等效電路，在該第一電源71開路時，該第一等效二極體組712可供該第一電流源711之一第一電流Ia流通，並在一第一陽極端V71建立一電位；而該第一旁路二極體713係反向並聯該第一等效二極體組712(即該第一旁路二極體713之陽極連接一接地端)，故當雷擊發生時，可藉由該第一旁路二極體713之導引，避免雷擊之電流直接衝擊該第一電源71而造成損壞。另外，該第二電源72同樣包含一第二電流源721、一第二等效二極體組722及一第二旁路二極體723，其電路連接態樣及作用與該第一電源71相同，於此不作贅述。Referring to FIG. 2, an equivalent circuit of the first power source 71 and the second power source 72 of the power pack 7 is disclosed. The first power source 71 includes a first current source 711, a first equivalent diode set 712, and a first bypass diode 713. The first current source 711 simulates a short circuit when the solar cell receives light. The first equivalent diode set 712 simulates the impedance of the solar cell when no light is received, the first current source 711, the first equivalent diode set 712, and the first bypass diode 713 Connected in parallel with each other. The first equivalent diode set 712 is an equivalent circuit in which the first power source 71 is connected in series when the plurality of solar cells are not receiving light. When the first power source 71 is open, the first equivalent diode set 712 is a first current Ia of the first current source 711 is circulated, and a potential is established at a first anode terminal V71; and the first bypass diode 713 is connected in anti-parallel to the first equivalent diode The group 712 (ie, the anode of the first bypass diode 713 is connected to a grounding end), so when a lightning strike occurs, the first bypass diode 713 can be guided to prevent the lightning strike current from directly impacting the current. The first power source 71 causes damage. In addition, the second power source 72 also includes a second current source 721 , a second equivalent diode set 722 , and a second bypass diode 723 , and the circuit connection and the function and the first power source 71 . The same, no further description here.
在操作該第一電源71及該第二電源72時，該第一電流源711之第一電流Ia及第二電流源721之第二電流Ib可供應該直流電源接收單元8，並提供該儲能單元9進行電能儲存。When the first power source 71 and the second power source 72 are operated, the first current Ia of the first current source 711 and the second current Ib of the second current source 721 are available to the DC power receiving unit 8 and provide the storage. The energy unit 9 performs electrical energy storage.
請再參照第2圖所示，由於該電源組7之第一電源71及第二電源72係分別由數個太陽能電池單元串聯組成，由於各該太陽能電池單元容易因製程上的問題或受光不平均造成該第一電源71之第一陽極端V71之電位與該第二電源72之一第二陽極端V72之電位產生差異，例如當該第一陽極端V71之電位高於該第二陽極端V72之電位時，供電初期，該第一電流Ia一部分電流供應該直流電源接收單元8及該儲能單元9，而該第一電流Ia另一部分電流流向該第二電源72的第二等效二極體組722將能量直接耗損掉，上述情況會持續進行直到該直流電源接收單元8負載需求漸漸提高時，該第一電源71、第二電源72及該儲能單元9再同時供應電能予該直流電源接收單元8。Referring to FIG. 2 again, since the first power source 71 and the second power source 72 of the power source group 7 are respectively composed of a plurality of solar battery cells connected in series, each of the solar battery cells is easily damaged by the process or received by the light. The difference between the potential of the first anode terminal V71 of the first power source 71 and the potential of the second anode terminal V72 of the second power source 72 is caused, for example, when the potential of the first anode terminal V71 is higher than the second anode terminal. At the initial stage of power supply, a part of the current of the first current Ia is supplied to the DC power receiving unit 8 and the energy storage unit 9, and another current of the first current Ia flows to the second equivalent of the second power source 72. The polar body group 722 directly consumes energy, and the above situation continues until the load demand of the DC power receiving unit 8 gradually increases, and the first power source 71, the second power source 72, and the energy storage unit 9 simultaneously supply power to the DC power receiving unit 8.
更進一步言之，請參照第3圖所示，其揭示若該直流電源接收單元8為一直流至交流電能轉換器時的電流波形示意圖，該電流的形成原因係由於該直流至交流電能轉換器並聯一市電電網時，該直流至交流電能轉換器流入該市電電網的電流波形應為一交流弦波波形，因為該直流至交流電能轉換器的內部電路之設計，而使得電流流入該太陽能電池的負端，並由該太陽能電池的正端流出，因而可得知該電流流出的方向即為該太陽能電池能量的流出方向，其電流波形並非一穩定直流電流，而是接近於如第3圖所示的一個類似整流過的弦波波形，用以供應至該直流至交流電能轉換器。以下將各半波均分為7等分供電區間進行分析：在第一個供電區間T1，該第一電流Ia分流至該第二電源72、該直流至交流電能轉換器及該儲能單元9；在第二個供電區間T2，負載需求漸增，該第一電流Ia及該第二電流Ib同時供電至該直流至交流電能轉換器，並持續對該儲能單元9充電；在第三供電區間T3及第四個供電區間T4，負載需求逐漸提升至最大，該第一電流Ia、該第二電流Ib及該儲能單元9之緩衝電容91及蓄電池92所蓄集之電能同時供應該直流至交流電能轉換器；在第五供電區間T5，負載需求仍然維持與第三供電區間T3相同；在第六個供電區間T6，負載需求漸減，該第一電流Ia及該第二電流Ib持續供電至該直流至交流電能轉換器，但該儲能單元9則由該第一電流Ia及該第二電流Ib之供應轉換進入充電狀態；在第七個供電區間T7，負載需求減至最低，該第一電流Ia則分流至該第二電源72、該直流至交流電能轉換器及該儲能單元9。Furthermore, please refer to FIG. 3, which discloses a schematic diagram of a current waveform when the DC power receiving unit 8 is always flowing to an AC power converter, and the current is formed due to the DC to AC power converter. When a mains grid is connected in parallel, the current waveform of the DC-to-AC power converter flowing into the utility grid should be an AC sine wave waveform, because the internal circuit of the DC-to-AC power converter is designed to cause current to flow into the solar cell. The negative end flows out from the positive end of the solar cell, so that the direction in which the current flows out is the outflow direction of the solar cell energy, and the current waveform is not a stable direct current, but is close to that shown in FIG. A similarly rectified sinusoidal waveform is shown for supply to the DC to AC power converter. In the following, each half wave is divided into 7 equal power supply sections for analysis: in the first power supply interval T1, the first current Ia is branched to the second power source 72, the DC to AC power converter, and the energy storage unit 9 In the second power supply interval T2, the load demand is gradually increased, the first current Ia and the second current Ib are simultaneously supplied to the DC to AC power converter, and the charging unit 9 is continuously charged; In the interval T3 and the fourth power supply interval T4, the load demand is gradually increased to the maximum, and the first current Ia, the second current Ib, the snubber capacitor 91 of the energy storage unit 9, and the electric energy stored in the battery 92 simultaneously supply the DC To the AC power converter; in the fifth power supply interval T5, the load demand remains the same as the third power supply interval T3; in the sixth power supply interval T6, the load demand is gradually decreased, and the first current Ia and the second current Ib are continuously supplied. Up to the DC to AC power converter, but the energy storage unit 9 is switched into a state of charge by the supply of the first current Ia and the second current Ib; in the seventh power supply interval T7, the load demand is minimized, First current Ia Split to the second power supply 72, the DC-to-AC power converter and the energy storage unit 9.
然而，一般而言，上述習用電源處理電路具有以下缺點：However, in general, the above conventional power supply processing circuit has the following disadvantages:
1、電路設置成本及體積增加：由於該蓄電池92具有一定的充放電使用週期，亦即超過該使用週期，該蓄電池92必須予以更換，因此將增加日後維護的困難度；且由於該蓄電池92需要進行電能儲存之用，因此，該蓄電池92勢必選擇大額定容量及體積之元件，如此將導致整體電路成本增加及裝設體積增大等問題。1. Circuit installation cost and volume increase: Since the battery 92 has a certain charge and discharge use period, that is, exceeds the use period, the battery 92 must be replaced, thereby increasing the difficulty of maintenance in the future; and since the battery 92 is required For the storage of electric energy, the battery 92 is bound to select components with a large rated capacity and volume, which will cause problems such as an increase in overall circuit cost and an increase in installation volume.
2、轉換效率不佳：由於各該太陽能電池單元容易因製程上的問題或受光不平均使該第一陽極端V71之電位與該第二陽極端V72之電位產生差異，進而造成該第一電流Ia之該另一部分電流並無法供應該直流電源接收單元8及該儲能單元9，以致供電效率低落。2, the conversion efficiency is not good: because each of the solar cells is easy to cause a difference in the potential of the first anode terminal V71 and the potential of the second anode terminal V72 due to process problems or uneven light reception, thereby causing the first current The other part of the current of Ia cannot supply the DC power receiving unit 8 and the energy storage unit 9, so that the power supply efficiency is low.
本發明主要目的係提供一種多輸入端電源處理電路，可省去蓄電池之設置，以降低整體電路設置成本及降低電路設置體積。The main object of the present invention is to provide a multi-input power processing circuit that can eliminate the setting of the battery to reduce the overall circuit installation cost and reduce the circuit setting volume.
本發明次要目的係提供一種多輸入端電源處理電路，以有效提高供電效率。A secondary object of the present invention is to provide a multi-input power processing circuit to effectively improve power supply efficiency.
根據本發明多輸入端電源處理電路，其具有數個輸入端、一輸出端及數個儲能電容，該數個輸入端供對應連接數個電源端，且各該儲能電容具有一第一端及一第二端，該輸入端對應耦接該儲能電容之第一端，該儲能電容之第二端接地，該數個儲能電容之各該第一端另共同耦接至該輸出端，而該輸出端供連接一直流電源接收單元及一緩衝電容。According to the multi-input power processing circuit of the present invention, it has a plurality of input terminals, an output terminal and a plurality of energy storage capacitors, wherein the plurality of input terminals are connected to the plurality of power supply terminals, and each of the energy storage capacitors has a first And a second end, the input end is coupled to the first end of the storage capacitor, the second end of the storage capacitor is grounded, and the first ends of the plurality of storage capacitors are coupled to the first end The output terminal is connected to the DC power receiving unit and a buffer capacitor.
為讓本發明之上述之他目的、特徵及優點能更明顯易懂，下文特舉本發明之較佳實施例，並配合所附圖式，作詳細說明如下：The above described objects, features, and advantages of the present invention will become more apparent from the aspects of the invention.
請參照第4圖所示，其揭示一電源組1、本發明第一實施例之多輸入端電源處理電路2、一直流電源接收單元3及一緩衝電容4之電路連接示意圖。Referring to FIG. 4, a circuit connection diagram of a power supply unit 1, a multi-input power supply processing circuit 2, a DC power receiving unit 3, and a snubber capacitor 4 according to the first embodiment of the present invention is disclosed.
本發明第一實施例之該電源組1具有數個電源(本發明以兩個電源11、12為例進行說明)，且各該電源連接一電源端，並可自各該電源端透過一多芯電纜線6’連接該多輸入端電源處理電路2，以便該電源組1輸出一供應電流，並輸入至該多輸入端電源處理電路2各輸入端，以進行電能處理後，再供應至該直流電源接收單元3及該緩衝電容4。The power supply unit 1 of the first embodiment of the present invention has a plurality of power supplies (the present invention is described by taking two power supplies 11 and 12 as an example), and each of the power supplies is connected to a power supply end, and a multi-core can be transmitted from each of the power supply ends. The cable 6' is connected to the multi-input power processing circuit 2, so that the power pack 1 outputs a supply current, and is input to each input of the multi-input power processing circuit 2 for power processing, and then supplied to the DC The power receiving unit 3 and the snubber capacitor 4.
更進一步言之，該多輸入端電源處理電路2具有數個輸入端及一輸出端，該數個輸入端個別電性連接於該電源組1之數個電源端，而該多輸入端電源處理電路2輸出端供電性連接該直流電源接收單元3及該緩衝電容4，且該多輸入端電源處理電路2另具有數個電源處理單元個別電性連接該數個輸入端，該多輸入端電源處理電路2可將該電源組1未使用到的電能進行儲存，以提高電源的供電效率。Furthermore, the multi-input power processing circuit 2 has a plurality of input terminals and an output terminal, and the plurality of input terminals are electrically connected to the plurality of power terminals of the power source group 1 , and the multi-input power supply is processed. The output end of the circuit 2 is electrically connected to the DC power receiving unit 3 and the snubber capacitor 4, and the multi-input power processing circuit 2 further has a plurality of power processing units electrically connected to the plurality of input terminals, the multi-input power supply The processing circuit 2 can store the unused power of the power group 1 to improve the power supply efficiency of the power source.
請再參照第4圖所示，其中該電源組1將以兩排並聯連接的太陽能電池(分別為一第一電源11及一第二電源12)為例進行如下說明：該電源組1之第一電源11及第二電源12分別連接一第一電源端V11及一第二電源端V12，該二個電源端V11及V12可分別輸出一第一電流Id及一第二電流Ie等供應電流。Please refer to FIG. 4 again, wherein the power pack 1 will be described by taking two rows of solar cells connected in parallel (one first power source 11 and one second power source 12 respectively) as an example: the power pack 1 A power source 11 and a second power source 12 are respectively connected to a first power terminal V11 and a second power terminal V12. The two power terminals V11 and V12 respectively output a current such as a first current Id and a second current Ie.
該多輸入端電源處理電路2對應該太陽能電池之設置數量，具有二個輸入端V21及V22，且該多輸入端電源處理電路2另具有一輸出端V23，該多輸入端電源處理電路2包含一第一儲能電容21、一第二儲能電容22、一第一阻隔二極體23及一第二阻隔二極體24。該第一電源端V11電性連接該多輸入端電源處理電路2之第一輸入端V21；該第一儲能電容21具有一第一端及一第二端，該第一儲能電容21之第一端耦接該第一輸入端V21，且該第一儲能電容21之第一端亦耦接該輸出端V23，該第一儲能電容21之第一端較佳係透過該第一阻隔二極體23耦接至該輸出端V23，亦即該第一儲能電容21之第一端連接該第一阻隔二極體23之一陽極端，且該第一阻隔二極體23之一陰極端電性連接該輸出端V23；再者，該第一儲能電容21之第二端係連接至接地端，而該輸出端V23並進一步連接該直流電源接收單元3及該緩衝電容4，以便該第一電流Id可順向流通該第一阻隔二極體23，並供應至該直流電源接收單元3及該緩衝電容4；且該第一電源11產生的第一電流Id(即供應電流)亦透過該第一電源端V11及該多輸入端電源處理電路2之第一輸入端V21電性連接該第一儲能電容21，以便將該第一電流Id儲存在該第一儲能電容21。同樣的，該第二電源端V12電性連接該多輸入端電源處理電路2之第二輸入端V22；該第二儲能電容22具有一第一端及一第二端，該第二儲能電容22之第一端耦接該第二輸入端V22，且該第二儲能電容22之第一端亦耦接該輸出端V23，該第二儲能電容22之第一端較佳係透過該第二阻隔二極體24耦接至該輸出端V23，亦即該第二儲能電容22之第一端連接該第二阻隔二極體24之一陽極端，且該第二阻隔二極體24之一陰極端電性連接該多輸入端電源處理電路2之輸出端V23；再者，該第二儲能電容22之第二端係連接至接地端，而該輸出端V23並進一步連接該直流電源接收單元3及該緩衝電容4，以便該第二電流Ie可順向流通該第二阻隔二極體24，並供應至該直流電源接收單元3及該緩衝電容4；且該第二電源12產生的第二電流Ie(即供應電流)另透過該第二電源端V12及該多輸入端電源處理電路2之第二輸入端V22電性連接該第二儲能電容22，以便將該第二電流Ie儲存在該第二儲能電容22The multi-input power processing circuit 2 has two input terminals V21 and V22 corresponding to the number of solar cells, and the multi-input power processing circuit 2 further has an output terminal V23. The multi-input power processing circuit 2 includes A first storage capacitor 21, a second storage capacitor 22, a first blocking diode 23 and a second blocking diode 24. The first power supply terminal V11 is electrically connected to the first input end V21 of the multi-input power supply processing circuit 2; the first storage capacitor 21 has a first end and a second end, and the first storage capacitor 21 The first end is coupled to the first input end V21, and the first end of the first storage capacitor 21 is coupled to the output end V23. The first end of the first storage capacitor 21 is preferably transmitted through the first end. The barrier diode 23 is coupled to the output terminal V23, that is, the first end of the first storage capacitor 21 is connected to one anode end of the first blocking diode 23, and one of the first blocking diodes 23 The cathode end is electrically connected to the output terminal V23; further, the second end of the first storage capacitor 21 is connected to the ground end, and the output terminal V23 is further connected to the DC power receiving unit 3 and the buffer capacitor 4, Therefore, the first current Id can flow through the first blocking diode 23 and be supplied to the DC power receiving unit 3 and the snubber capacitor 4; and the first current Id generated by the first power source 11 (ie, the current is supplied) The first power terminal V11 and the first input terminal V21 of the multi-input power processing circuit 2 are electrically connected to the first The capacitor 21 is stored to store the first current Id in the first storage capacitor 21. Similarly, the second power terminal V12 is electrically connected to the second input terminal V22 of the multi-input power processing circuit 2; the second storage capacitor 22 has a first end and a second end, and the second energy storage device The first end of the capacitor 22 is coupled to the second input terminal V22, and the first end of the second storage capacitor 22 is coupled to the output terminal V23. The first end of the second storage capacitor 22 is preferably transmitted through The second blocking diode 24 is coupled to the output terminal V23, that is, the first end of the second storage capacitor 22 is connected to one of the anode ends of the second blocking diode 24, and the second blocking diode is One of the cathode ends is electrically connected to the output terminal V23 of the multi-input power processing circuit 2; further, the second end of the second storage capacitor 22 is connected to the ground, and the output terminal V23 is further connected to the a DC power receiving unit 3 and the snubber capacitor 4, so that the second current Ie can flow through the second blocking diode 24 and supply the DC power receiving unit 3 and the snubber capacitor 4; and the second power source The second current Ie generated by 12 (ie, the supply current) is further processed through the second power terminal V12 and the multi-input power supply. The second input terminal V22 of the circuit 2 is electrically connected to the second storage capacitor 22 to store the second current Ie in the second storage capacitor 22
另外，該直流電源接收單元3可分別透過該第一阻隔二極體23及該第二阻隔二極體24接收該電源組1產生之該第一電流Id及該第二電流Ie；該直流電源接收單元3為一直流至交流電能轉換器。其中該直流至交流電能轉換器可為一般型直流至交流電能轉換器；或為一被動式觸發型直流至交流電能轉換器。In addition, the DC power receiving unit 3 can receive the first current Id and the second current Ie generated by the power group 1 through the first blocking diode 23 and the second blocking diode 24 respectively; the DC power source The receiving unit 3 is always flowing to the AC power converter. The DC to AC power converter can be a general DC to AC power converter; or a passive trigger DC to AC power converter.
請參照第5圖所示，其揭示本發明第4圖之等效電路。該電源組1之第一電源11包含一第一電流源111、一第一等效二極體組112及一第一旁路二極體113，其中該第一電流源111係模擬該太陽能電池受光時的短路電流；該第一等效二極體組12係模擬該太陽能電池無受光時的阻抗狀態，該第一電流源111可產生該第一電流Id，該第一電流源111、該第一等效二極體組112及該第一旁路二極體113相互並聯連接。該第一等效二極體組112在該 第一電源11形成開路時，可供該第一電流Id流通；而該第一旁路二極體113係反向並聯(即該第一旁路二極體113之陽極連接一接地端)該第一等效二極體組112，故當雷擊發生時，可藉由該第一旁路二極體113之導引，避免雷擊之電流直接衝擊該第一電流源111而造成損壞。另外，該第二電源12同樣包含一第二電流源121、一第二等效二極體組122及一第二旁路二極體123，其電路連接態樣及作用與該第一電源11相同，於此不作贅述。Referring to Fig. 5, an equivalent circuit of Fig. 4 of the present invention is disclosed. The first power source 11 of the power pack 1 includes a first current source 111, a first equivalent diode set 112, and a first bypass diode 113. The first current source 111 simulates the solar cell. a short-circuit current when receiving light; the first equivalent diode set 12 simulates an impedance state when the solar cell is not receiving light, and the first current source 111 can generate the first current Id, the first current source 111, the The first equivalent diode set 112 and the first bypass diode 113 are connected in parallel with each other. The first equivalent diode set 112 is in the When the first power source 11 forms an open circuit, the first current Id is allowed to flow; and the first bypass diode 113 is connected in anti-parallel (ie, the anode of the first bypass diode 113 is connected to a ground). The first equivalent diode set 112, so that when a lightning strike occurs, the first bypass diode 113 can be guided to prevent the current of the lightning strike from directly impacting the first current source 111 to cause damage. In addition, the second power source 12 also includes a second current source 121, a second equivalent diode set 122, and a second bypass diode 123, and the circuit connection and the function of the first power source 11 The same, no further description here.
請再參照第4及5圖所示，該多輸入端電源處理電路2另設有一第一防逆流二極體25及一第二防逆流二極體26。該第一防逆流二極體25之一陽極端電性連接該第一輸入端V21，且該第一防逆流二極體25之一陰極端電性連接該第一儲能電容21之第一端及該第一阻隔二極體23之陽極端；該第二防逆流二極體26之陽極端電性連接該第二輸入端V22，且該第二防逆流二極體26之陰極端電性連接該第二儲能電容22之第一端及該第二阻隔二極體24之陽極端。故藉由上述連接，該第一防逆流二極體25可避免該第一儲能電容21之電能回流至該第一電源11；及該第二防逆流二極體26可避免該第二儲能電容22之電能回流至該第二電源12。Referring to FIGS. 4 and 5 again, the multi-input power processing circuit 2 is further provided with a first anti-backflow diode 25 and a second anti-backflow diode 26. The anode end of the first anti-countercurrent diode 25 is electrically connected to the first input end V21, and the cathode end of the first anti-countercurrent diode 25 is electrically connected to the first end of the first storage capacitor 21 And an anode end of the first blocking diode 23; an anode end of the second anti-countercurrent diode 26 is electrically connected to the second input end V22, and a cathode end of the second anti-countercurrent diode 26 is electrically connected The first end of the second storage capacitor 22 and the anode end of the second blocking diode 24 are connected. Therefore, the first anti-countercurrent diode 25 can prevent the electrical energy of the first storage capacitor 21 from flowing back to the first power source 11 by the above connection; and the second anti-countercurrent diode 26 can avoid the second storage The electrical energy of the capacitor 22 is returned to the second power source 12.
在操作該第一電源11及該第二電源12時，供電初期，由於該第一電源11電壓高於該第一儲能電容21及該緩衝電容4之電壓，且該第二電源12電壓高於該第二儲能電容22及該緩衝電容4之電壓，因此該第一電源11之該第一電流Id及該第二電源12之該第二電流Ie可同時供 應該直流電源接收單元3，並提供該第一儲能電容21、該第二儲能電容22及該緩衝電容4進行電能儲存。待該第一儲能電容21、該第二儲能電容22及該緩衝電容4充電至一預定電量，且該直流電源接收單元3之負載需求提高時，若該第一儲能電容21、該第二儲能電容22及該緩衝電容4所儲存的電流分別為Ic1、Ic2及Ic3，則同一時間所能供應至該直流電源接收單元3之最大電流Itotal,max 將可表示為：Itotal,max =Id+Ie+Ic1+Ic2+Ic3 (1)其中，該第一儲能電容21及第二儲能電容22係可選自高耐壓之電容器，且由於該第一儲能電容21及該第二儲能電容22可進行電量之分散儲存，因此該緩衝電容4可選用一小容量之電容器即可進行能量之緩衝作用。When the first power source 11 and the second power source 12 are operated, the voltage of the first power source 11 is higher than the voltage of the first storage capacitor 21 and the buffer capacitor 4, and the voltage of the second power source 12 is high. The voltage of the second storage capacitor 22 and the snubber capacitor 4, so the first current Id of the first power source 11 and the second current Ie of the second power source 12 can be simultaneously supplied to the DC power receiving unit 3, The first storage capacitor 21, the second storage capacitor 22 and the snubber capacitor 4 are provided for electrical energy storage. When the first storage capacitor 21, the second storage capacitor 22, and the snubber capacitor 4 are charged to a predetermined amount of power, and the load demand of the DC power receiving unit 3 is increased, if the first storage capacitor 21 is The currents stored in the second storage capacitor 22 and the snubber capacitor 4 are Ic1, Ic2, and Ic3, respectively, and the maximum current I total,max that can be supplied to the DC power receiving unit 3 at the same time can be expressed as: I total , max = Id + Ie + Ic1 + Ic2 + Ic3 (1) wherein the first storage capacitor 21 and the second storage capacitor 22 are selected from a capacitor having a high withstand voltage, and due to the first storage capacitor 21 And the second storage capacitor 22 can perform the storage and storage of the electric quantity. Therefore, the snubber capacitor 4 can use a small-capacity capacitor to perform energy buffering.
總而言之，以該直流電源接收單元3為直流至交流電能轉換器為例，在該直流至交流電能轉換器之負載需求不大時，即操作初期，該第一電流Id及該第二電流Ie同時提供該直流至交流電能轉換器電能之所需，並對該第一儲能電容21、該第二儲能電容22及該緩衝電容4儲能；漸漸的，若該直流至交流電能轉換器之負載需求變大之情況下，除了可由該第一電流Id及該第二電流Ie供應電能之外，不足之處，可由該第一儲能電容21、該第二儲能電容22及該緩衝電容4所蓄集之電流Ic1、Ic2及Ic3供應。In summary, the DC power receiving unit 3 is a DC to AC power converter. When the load demand of the DC to AC power converter is not large, that is, at the initial stage of operation, the first current Id and the second current Ie are simultaneously Providing the DC to AC power converter electrical energy, and storing the first storage capacitor 21, the second storage capacitor 22, and the buffer capacitor 4; gradually, if the DC to AC power converter In the case where the load demand becomes large, in addition to the electric energy that can be supplied from the first current Id and the second current Ie, the first storage capacitor 21, the second storage capacitor 22, and the snubber capacitor can be used. The four accumulated currents Ic1, Ic2, and Ic3 are supplied.
更進一步言之，請再參照第3及5圖所示，當該電源組1之數個電源端透過本發明之多輸入端電源處理電路2供應至一直流至交流電能轉換器時，在第一個供電區間T1，該第一電流Id及該第二電流Ie同時供應該直流至交流電能轉換器，並對該第一儲能電容21、該第二儲能電容22及該緩衝電容4充電；在第二個供電區間T2，負載需求漸增，該第一電流Id及該第二電流Ie持續供電及對該第一儲能電容21、該第二儲能電容22及該緩衝電容4進行充電操作；在第三供電區間T3及第四個供電區間T4，負載需求逐漸提升至最大，該第一電流Id、該第二電流Ie、該第一儲能電容21之電流Ic1、該第二儲能電容22之電流Ic2及該緩衝電容4之電流Ic3同時供應該直流至交流電能轉換器；在第五供電區間T5，負載需求仍然維持與第三供電區間T3相同操作；在第六個供電區間T6及第七個供電區間T7，負載需求漸減，該第一電流Id及該第二電流Ie持續供電至該直流至交流電能轉換器，但該第一儲能電容21、該第二儲能電容22及該緩衝電容4則再轉換進入充電狀態。Furthermore, please refer to FIGS. 3 and 5 again, when the plurality of power terminals of the power pack 1 are supplied to the AC power converter through the multi-input power processing circuit 2 of the present invention, a power supply interval T1, the first current Id and the second current Ie simultaneously supply the DC to the AC power converter, and charge the first storage capacitor 21, the second storage capacitor 22, and the buffer capacitor 4 In the second power supply interval T2, the load demand is gradually increased, the first current Id and the second current Ie are continuously supplied, and the first storage capacitor 21, the second storage capacitor 22, and the snubber capacitor 4 are performed. Charging operation; in the third power supply interval T3 and the fourth power supply interval T4, the load demand is gradually increased to the maximum, the first current Id, the second current Ie, the current Ic1 of the first storage capacitor 21, and the second The current Ic2 of the storage capacitor 22 and the current Ic3 of the snubber capacitor 4 simultaneously supply the DC to the AC power converter; in the fifth power supply interval T5, the load demand remains the same as the third power supply interval T3; Interval T6 and seventh power supply interval T7, The first current Id and the second current Ie are continuously supplied to the DC to AC power converter, but the first storage capacitor 21, the second storage capacitor 22, and the buffer capacitor 4 are reconverted. Enter the charging state.
綜上所述，本發明由於可利用該多輸入端電源處理電路2之第一儲能電容21及第二儲能電容22進行電量之蓄集，因此該緩衝電容4只要選用一小容量之電容器即可進行該電源組1與該直流電源接收單元3之間的能量緩衝，相較於習用電源處理電路，本發明將可省去習用電源處理電路之蓄電池92之設置，因此本發明具有降低整體電路設置成本及降低電路設置體積等功效。In summary, the present invention can utilize the first storage capacitor 21 and the second storage capacitor 22 of the multi-input power processing circuit 2 to accumulate the electric quantity. Therefore, the snubber capacitor 4 only needs a small-capacity capacitor. The energy buffer between the power pack 1 and the DC power receiving unit 3 can be performed. Compared with the conventional power processing circuit, the present invention can eliminate the setting of the battery 92 of the conventional power processing circuit, so the present invention has a reduced overall Circuit setup costs and reduced circuit setup volume.
再者，本發明藉由該多輸入端電源處理電路2之設置，一方面可對該電源組1進行第一電流Id及第二電流Ie的電量蓄集，且可將其蓄集的電量提供至該直流電源接收單元3，相較於習用電源處理電路，本發明將具有提升供電效率之功效。Furthermore, the present invention can perform the power storage of the first current Id and the second current Ie on the power supply group 1 by the setting of the multi-input power processing circuit 2, and can provide the accumulated power. To the DC power receiving unit 3, the present invention has the effect of improving the power supply efficiency as compared with the conventional power processing circuit.
此外，從第3圖之直流至交流電能轉換器的工作原理可知，以直流端抽取之電流進行分析，相較於習用技術，藉由該多輸入端電源處理電路2之設置，本發明在任一供電區間T1~T7，該第一電流Id及該第二電流Ie均維持對該直流至交流電能轉換器的供電狀態；且本發明在第四供電區間T1~T7發生時，該第一電流Id、該第二電流Ie、該第一儲能電容21之電流Ic1、該第二儲能電容22之電流Ic2及該緩衝電容4之電流Ic3將同時供應至該直流至交流電能轉換器，所以本發明以電流輸出為主的多輸入端之電源處理電路之設計可更進一步提高供電效率。In addition, from the working principle of the DC to AC power converter of FIG. 3, it can be known that the current drawn by the DC terminal is analyzed. Compared with the conventional technology, the present invention is in any one of the settings of the multi-input power processing circuit 2. The power supply interval T1~T7, the first current Id and the second current Ie maintain the power supply state of the DC to the AC power converter; and when the fourth power supply interval T1~T7 occurs, the first current Id The second current Ie, the current Ic1 of the first storage capacitor 21, the current Ic2 of the second storage capacitor 22, and the current Ic3 of the snubber capacitor 4 are simultaneously supplied to the DC to AC power converter, so The design of the power processing circuit of the multi-input terminal based on the current output can further improve the power supply efficiency.
且本發明亦可藉由將該第一儲能電容21之電壓、該第二儲能電容22之電壓及緩衝電容4之電壓迴授至一控制電路(未繪示)，以進一步觀察該多輸入端電源處理電路2能量的變化，以便該直流電源接收單元3可對應該能量的變化進行較佳的控制。The present invention can also further observe the voltage by feeding back the voltage of the first storage capacitor 21, the voltage of the second storage capacitor 22, and the voltage of the snubber capacitor 4 to a control circuit (not shown). The input power processing circuit 2 changes the energy so that the DC power receiving unit 3 can better control the change in energy.
又，請參照第6圖所示，其揭示本發明第二實施例之多輸入端電源處理電路2’，相較於第一實施例，第二實施例另提供一應用於風力發電之一電源組1’，該電源組1’係為一風力發電單元，以三相發電架構而言，其具有三個對應的三相交流電端R、S、T，各相交流電端R、S、T連接各該電源端，各該電源端亦透過一多芯電纜線6”連接該多輸入端電源處理電路2’之各輸入端，該風力發電單元受風力作用自該三相交流電端R、S、T產生三相交流電並自各該電源端輸出時，可利用該多輸入端電源處理電路2’之一整流器24’將該三相交流電進行全波整流，以轉換成三個直流電，並利用該多輸入端電源處理電路2’之一第一儲能電容21’、一第二儲能電容22’及一第三儲能電容23’進行直流電能儲存，藉此可使該緩衝電容4的電壓波形更為平穩，當然亦具有提高供電效率之功效。Please refer to FIG. 6, which discloses a multi-input power processing circuit 2' according to a second embodiment of the present invention. Compared with the first embodiment, the second embodiment further provides a power supply for wind power generation. Group 1', the power group 1' is a wind power unit, in the case of a three-phase power generation architecture, it has three corresponding three-phase AC terminals R, S, T, and each phase AC terminal R, S, T connection Each of the power terminals, each of the power terminals is also connected to each input end of the multi-input power processing circuit 2' via a multi-core cable 6", the wind power generating unit is subjected to wind force from the three-phase AC terminals R, S, When T generates three-phase alternating current and outputs from each of the power terminals, the three-phase alternating current can be full-wave rectified by one rectifier 24' of the multi-input power processing circuit 2' to be converted into three direct currents, and the The first storage capacitor 21', the second storage capacitor 22' and the third storage capacitor 23' of the input power processing circuit 2' perform DC power storage, thereby making the voltage waveform of the buffer capacitor 4 More stable, of course, also has improved power efficiency Effect.
再者，若上述風力發電單元為一個兩相的發電機時，該多輸入端電源處理電路之儲能電容數量可藉由電路的簡單變化修改為二個儲能電容，以進行各相之直流電能儲存。Furthermore, if the wind power generation unit is a two-phase generator, the number of storage capacitors of the multi-input power processing circuit can be modified into two storage capacitors by simple changes of the circuit to perform DC current of each phase. Can store.
雖然本發明已利用上述較佳實施例揭示，然其並非用以限定本發明，任何熟習此技藝者在不脫離本發明之精神和範圍之內，相對上述實施例進行各種更動與修改仍屬本發明所保護之技術範疇，因此本發明之保護範圍當視後附之申請專利範圍所界定者為準。While the invention has been described in connection with the preferred embodiments described above, it is not intended to limit the scope of the invention. The technical scope of the invention is protected, and therefore the scope of the invention is defined by the scope of the appended claims.
1．．．電源組1. . . Power pack
11．．．第一電源11. . . First power supply
111．．．第一電流源111. . . First current source
112．．．第一等效二極體組112. . . First equivalent diode set
113．．．第一旁路二極體113. . . First bypass diode
12．．．第二電源12. . . Second power supply
121．．．第二電流源121. . . Second current source
122．．．第二等效二極體組122. . . Second equivalent diode set
123．．．第二旁路二極體123. . . Second bypass diode
1’．．．電源組1'. . . Power pack
2．．．多輸入端電源處理電路2. . . Multi-input power processing circuit
21．．．第一儲能電容twenty one. . . First storage capacitor
22．．．第二儲能電容twenty two. . . Second storage capacitor
23．．．第一阻隔二極體twenty three. . . First blocking diode
24．．．第二阻隔二極體twenty four. . . Second blocking diode
25．．．第一防逆流二極體25. . . First anti-countercurrent diode
26．．．第二防逆流二極體26. . . Second anti-countercurrent diode
2’．．．多輸入端電源處理電路2'. . . Multi-input power processing circuit
21’．．．第一儲能電容twenty one'. . . First storage capacitor
22’．．．第二儲能電容twenty two'. . . Second storage capacitor
23’．．．第三儲能電容twenty three'. . . Third storage capacitor
24’．．．整流器twenty four'. . . Rectifier
3．．．直流電源接收單元3. . . DC power receiving unit
4．．．緩衝電容4. . . Snubber capacitor
6’．．．多芯電纜線6’. . . Multi-core cable
6”．．．多芯電纜線6”...multi-core cable
V11．．．第一電源端V11. . . First power terminal
V12．．．第二電源端V12. . . Second power terminal
V21．．．第一輸入端V21. . . First input
V22．．．第二輸入端V22. . . Second input
V23．．．輸出端V23. . . Output
6．．．多芯電纜線6. . . Multi-core cable
7．．．電源組7. . . Power pack
71．．．第一電源71. . . First power supply
711．．．第一電流源711. . . First current source
712．．．第一等效二極體組712. . . First equivalent diode set
713．．．第一旁路二極體713. . . First bypass diode
72．．．第二電源72. . . Second power supply
721．．．第二電流源721. . . Second current source
722．．．第二等效二極體組722. . . Second equivalent diode set
723．．．第二旁路二極體723. . . Second bypass diode
8．．．直流電源接收單元8. . . DC power receiving unit
9．．．儲能單元9. . . Energy storage unit
91．．．緩衝電容91. . . Snubber capacitor
92．．．蓄電池92. . . Battery
D．．．防逆流二極體D. . . Anti-countercurrent diode
V71．．．第一陽極端V71. . . First anode end
V72．．．第二陽極端V72. . . Second anode end
第1圖：習知電源電路之電路示意圖。Figure 1: Schematic diagram of a conventional power supply circuit.
第2圖：為第1圖之等效電路圖。Fig. 2 is an equivalent circuit diagram of Fig. 1.
第3圖：直流電源接收單元為一直流至交流電能轉換器時的負載電流波形示意圖。Figure 3: Schematic diagram of the load current waveform when the DC power receiving unit is always flowing to the AC power converter.
第4圖：本發明第一實施例多輸入端電源處理電路與電源組、直流電源接收單元及緩衝電容之電路連接示意圖。FIG. 4 is a schematic diagram showing the circuit connection between the multi-input power processing circuit and the power supply group, the DC power receiving unit, and the snubber capacitor according to the first embodiment of the present invention.
第5圖：為第4圖之等效電路圖。Figure 5: is the equivalent circuit diagram of Figure 4.
第6圖：本發明第二實施例多輸入端電源處理電路與電源組、直流電源接收單元及緩衝電容之電路連接示意圖。FIG. 6 is a schematic diagram showing the circuit connection between the multi-input power processing circuit and the power supply group, the DC power receiving unit, and the snubber capacitor according to the second embodiment of the present invention.
1．．．電源組1. . . Power pack
11．．．第一電源11. . . First power supply
12．．．第二電源12. . . Second power supply
2．．．多輸入端電源處理電路2. . . Multi-input power processing circuit
21．．．第一儲能電容twenty one. . . First storage capacitor
22．．．第二儲能電容twenty two. . . Second storage capacitor
23．．．第一阻隔二極體twenty three. . . First blocking diode
24．．．第二阻隔二極體twenty four. . . Second blocking diode
25．．．第一防逆流二極體25. . . First anti-countercurrent diode
26．．．第二防逆流二極體26. . . Second anti-countercurrent diode
3．．．直流電源接收單元3. . . DC power receiving unit
4．．．緩衝電容4. . . Snubber capacitor
6’．．．多芯電纜線6’. . . Multi-core cable
V11．．．第一供電端V11. . . First power supply
V12．．．第二供電端V12. . . Second power supply
V21．．．第一輸入端V21. . . First input
V22．．．第二輸入端V22. . . Second input
V23．．．輸出端V23. . . Output
Claims (8)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| TW99100925A TWI420779B (en) | 2010-01-14 | 2010-01-14 | Electrical energy dispatching circuit with multi-inputs |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| TW99100925A TWI420779B (en) | 2010-01-14 | 2010-01-14 | Electrical energy dispatching circuit with multi-inputs |
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| TW201125260A TW201125260A (en) | 2011-07-16 |
| TWI420779B true TWI420779B (en) | 2013-12-21 |
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TW200539557A (en) * | 2004-02-17 | 2005-12-01 | Semiconductor Components Ind | Low audible noise power supply method and controller therefor |
| TW200925843A (en) * | 2007-12-12 | 2009-06-16 | Phoenixtec Power Co Ltd | Converting device with multiple power inputs and UPS system having the same |
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TW200539557A (en) * | 2004-02-17 | 2005-12-01 | Semiconductor Components Ind | Low audible noise power supply method and controller therefor |
| TW200925843A (en) * | 2007-12-12 | 2009-06-16 | Phoenixtec Power Co Ltd | Converting device with multiple power inputs and UPS system having the same |
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| TW201125260A (en) | 2011-07-16 |
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