TWI697181B - Dc-to-dc converter with a power factor correction function - Google Patents
Dc-to-dc converter with a power factor correction function Download PDFInfo
- Publication number
- TWI697181B TWI697181B TW107137145A TW107137145A TWI697181B TW I697181 B TWI697181 B TW I697181B TW 107137145 A TW107137145 A TW 107137145A TW 107137145 A TW107137145 A TW 107137145A TW I697181 B TWI697181 B TW I697181B
- Authority
- TW
- Taiwan
- Prior art keywords
- transistor switch
- energy storage
- circuit
- turned
- storage unit
- Prior art date
Links
Images
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B70/00—Technologies for an efficient end-user side electric power management and consumption
- Y02B70/10—Technologies improving the efficiency by using switched-mode power supplies [SMPS], i.e. efficient power electronics conversion e.g. power factor correction or reduction of losses in power supplies or efficient standby modes
Landscapes
- Dc-Dc Converters (AREA)
- Stand-By Power Supply Arrangements (AREA)
Abstract
Description
本發明係有關一種直流對直流轉換器,尤指一種應用於不斷電系統中具功率因數修正功能的直流對直流轉換器。 The invention relates to a DC-to-DC converter, in particular to a DC-to-DC converter with power factor correction function applied in an uninterruptible power system.
一般而言,具有功率因數修正(Power Factor Correction,PFC)功能的轉換器應用於目前不斷電系統(Uninterruptible Power System,UPS)的3kVA架構下之電池模式時,在電網異常或停電的情況下不間斷地為電器等負載設備提供備援交流電源的供電,以維持電器正常運作的設備。通常情況下不斷電系統被用於維持電腦、伺服器等關鍵性商用設備或精密儀器的不間斷的供電,防止數據損失、通訊中斷或裝置失去控制。 Generally speaking, when the converter with Power Factor Correction (PFC) function is applied to the battery mode of the current uninterruptible power system (UPS) under the 3kVA architecture, in the case of abnormal power grid or power outage Uninterrupted power supply for electrical appliances and other load equipment to provide backup AC power to maintain the normal operation of electrical equipment. Normally, the uninterruptible power supply system is used to maintain uninterrupted power supply for critical commercial equipment or precision instruments such as computers and servers to prevent data loss, communication interruption, or device control.
然而,目前不斷電系統(UPS)當運作於3kVA架構下之電池模式時,最普遍的應用是配合鉛酸電池使用,而鉛酸電池的體積大、壽命短、維護上耗時耗成本,且傳統的直流對直流(DC-to-DC)轉換器為推挽式(Push-Pull)架構,不同於交流電網一端的Boost升壓電路。如此一來會佔據電路板上過多的佈線面積,增加電路板基材與製程時間,且因鉛酸電池體積大小與增加Push-Pull線路架構,對於不斷電系統之體積與成本都將因此增加。 However, the current uninterruptible power supply system (UPS), when operating in the battery mode of the 3kVA architecture, is most commonly used with lead-acid batteries, which are large in size, short in life, and time-consuming and costly to maintain. And the traditional DC-to-DC converter is a push-pull (Push-Pull) architecture, which is different from the Boost boost circuit at one end of the AC power grid. In this way, it will occupy too much wiring area on the circuit board, increase the circuit board base material and process time, and due to the volume of the lead-acid battery and increase the Push-Pull circuit structure, the volume and cost of the uninterruptible power system will therefore increase .
為此,如何設計出一種改進式的直流對直流轉換器,特別是在線路架構簡化的改進,來解決前述不斷電系統之體積與成本增加的技術問題,乃為本案發明人所研究的重要課題。 To this end, how to design an improved DC-DC converter, especially in the simplification of the line architecture, to solve the aforementioned technical problems of increasing the volume and cost of the uninterruptible power system is the important research of the inventor of the present case Subject.
本發明之目的在於提供一種具功率因數修正功能之直流對直流轉換器,透過在線路架構簡化的改進,能夠解決前述不斷電系統之體積與成本增加的技術問題,而達到降低生產成本、提高生產效率以及使用上便攜之目的。 The purpose of the present invention is to provide a DC-to-DC converter with power factor correction function, which can solve the technical problems of increasing the volume and cost of the uninterruptible power system by simplifying the improvement of the line structure, thereby reducing the production cost and improving Production efficiency and the purpose of being portable.
為了達到前述目的,本發明所提出的具功率因數修正功能之直流對直流轉換器,應用於對負載提供市電模式或電池模式的不斷電供電,具功率因數修正功能之直流對直流轉換器包括:第一電路,耦接交流電源的火線端;第一電路包括串聯耦接的第一功率開關電路以及備援電池;其中,第一功率開關電路耦接火線端;第二電路,耦接交流電源的火線端以及中性線端,且第二電路耦接第一電路;第二電路包括串聯耦接的儲能單元以及第二功率開關電路;其中,儲能單元耦接火線端以及第功率開關電路,第二功率開關電路耦接中性線端以及備援電池;以及第三電路,耦接第一電路、第二電路以及中性線端;其中,第三電路耦接第一電路的備援電池、第二電路的儲能單元以及第二功率開關電路;其中,當交流電源正常時,交流電源通過第二電路以及第三電路對負載提供市電模式的供電;當交流電源異常時,備援電池通過第一功率開關電路、第二電路以及第三電路對負載提供電池模式的供電。 In order to achieve the foregoing objective, the DC-DC converter with power factor correction function proposed by the present invention is applied to provide continuous power supply to the load in the commercial mode or battery mode. The DC-DC converter with power factor correction function includes : First circuit, coupled to the live terminal of the AC power supply; the first circuit includes a first power switch circuit and a backup battery coupled in series; wherein, the first power switch circuit is coupled to the live terminal; the second circuit, coupled to the AC The live terminal and the neutral terminal of the power supply, and the second circuit is coupled to the first circuit; the second circuit includes an energy storage unit and a second power switch circuit coupled in series; wherein the energy storage unit is coupled to the live terminal and the first power A switch circuit, the second power switch circuit is coupled to the neutral terminal and the backup battery; and a third circuit is coupled to the first circuit, the second circuit, and the neutral terminal; wherein, the third circuit is coupled to the The backup battery, the energy storage unit of the second circuit, and the second power switch circuit; wherein, when the AC power supply is normal, the AC power supply provides the mains mode power supply to the load through the second circuit and the third circuit; when the AC power supply is abnormal, The backup battery provides battery mode power supply to the load through the first power switch circuit, the second circuit, and the third circuit.
進一步而言,所述之具功率因數修正功能之直流對直流轉換器中,第一功率開關電路包括串聯耦接的第一二極體以及第一電晶體開關;其中,第一二極體耦接火線端以及第二電路的儲能單元,第一電晶體開關耦接備援電池。 Further, in the DC-DC converter with power factor correction function, the first power switch circuit includes a first diode and a first transistor switch coupled in series; wherein, the first diode is coupled The energy storage unit connected to the live end and the second circuit, the first transistor switch is coupled to the backup battery.
進一步而言,所述之具功率因數修正功能之直流對直流轉換器中,第二功率開關電路包括第四電晶體開關以及串聯耦接的第二電晶體開關以及第三電晶體開關;其中,第四電晶體開關的一端耦接第二電晶體開關以及第三電晶體開關,第四電晶體開關的另一端耦接備援電池以及第三電路;其中,第二電晶體開關耦接儲能單元以及第三電路,第三電晶體開關耦接中性線端。 Further, in the DC-DC converter with power factor correction function, the second power switch circuit includes a fourth transistor switch and a second transistor switch and a third transistor switch coupled in series; wherein, One end of the fourth transistor switch is coupled to the second transistor switch and the third transistor switch, and the other end of the fourth transistor switch is coupled to the backup battery and the third circuit; wherein, the second transistor switch is coupled to the energy storage The unit and the third circuit, the third transistor switch is coupled to the neutral terminal.
進一步而言,所述之具功率因數修正功能之直流對直流轉換器中,第三電路包括串聯耦接的第二二極體、第三二極體、第一電容器以及第二電容器;其中,第二二極體耦接第二電路的第四電晶體以及第一電路的備援電池,第三二極體耦接第二電路的儲能單元以及第二電晶體,第一電容器以及第二電容器耦接中性線端以及第二電路的第三電晶體開關。 Further, in the DC-DC converter with power factor correction function, the third circuit includes a second diode, a third diode, a first capacitor, and a second capacitor coupled in series; wherein, The second diode is coupled to the fourth transistor of the second circuit and the backup battery of the first circuit, the third diode is coupled to the energy storage unit of the second circuit and the second transistor, the first capacitor and the second The capacitor is coupled to the neutral terminal and the third transistor switch of the second circuit.
進一步而言,所述之具功率因數修正功能之直流對直流轉換器中,當運作於市電模式,且當直流對直流轉換器為正半週操作時:第一電晶體開關關斷、第二電晶體開關導通、第三電晶體開關導通且第四電晶體開關關斷,儲能單元為儲能操作;以及第一電晶體開關關斷、第二電晶體開關關斷、第三電晶體開關關斷且第四電晶體開關關斷,儲能單元為釋能操作。 Further, in the DC-DC converter with power factor correction function, when operating in the mains mode, and when the DC-DC converter is operating in the positive half cycle: the first transistor switch is turned off, the second The transistor switch is turned on, the third transistor switch is turned on, and the fourth transistor switch is turned off, and the energy storage unit is an energy storage operation; and the first transistor switch is turned off, the second transistor switch is turned off, and the third transistor switch It is turned off and the fourth transistor switch is turned off, and the energy storage unit is operated for energy release.
進一步而言,所述之具功率因數修正功能之直流對直流轉換器中,當運作於市電模式,且當直流對直流轉換器為負半週操作時:第一電晶體開關關斷、第二電晶體開關導通、第三電晶體開關導通且第四電晶體開關關斷,儲能單元為儲能操作;以及第一電晶體開關關斷、第二電晶體開關關斷、第三電晶體開關關斷且第四電晶體開關關斷,儲能單元為釋能操作。 Further, in the DC-DC converter with power factor correction function, when operating in the mains mode, and when the DC-DC converter is operating in a negative half cycle: the first transistor switch is turned off, the second The transistor switch is turned on, the third transistor switch is turned on, and the fourth transistor switch is turned off, and the energy storage unit is an energy storage operation; and the first transistor switch is turned off, the second transistor switch is turned off, and the third transistor switch It is turned off and the fourth transistor switch is turned off, and the energy storage unit is operated for energy release.
進一步而言,所述之具功率因數修正功能之直流對直流轉換器中,當運作於電池模式,且當直流對直流轉換器為正半週操作時:第一電晶體開關導通、第二電晶體開關導通、第三電晶體開關導通且第四電晶體開關導通,儲能單元為儲能操作;以及第一電晶體開關導通、第二電晶體開關關斷、第三電晶體開關導通且第四電晶體開關導通,儲能單元為釋能操作。 Further, in the DC-DC converter with power factor correction function, when operating in battery mode, and when the DC-DC converter is operating in the positive half cycle: the first transistor switch is turned on, the second power The crystal switch is turned on, the third transistor switch is turned on, and the fourth transistor switch is turned on, and the energy storage unit is an energy storage operation; and the first transistor switch is turned on, the second transistor switch is turned off, the third transistor switch is turned on, and the first The four transistor switch is turned on, and the energy storage unit is operated for energy release.
進一步而言,所述之具功率因數修正功能之直流對直流轉換器中,當運作於電池模式,且當直流對直流轉換器為負半週操作時:第一電晶體開關導通、第二電晶體開關導通、第三電晶體開關導通且第四電晶體開關導通,儲能單元為儲能操作;以及第一電晶體開關導通、第二電晶體開關導通、第三電晶體開關導通且第四電晶體開關關斷,儲能單元為釋能操作。 Further, in the DC-DC converter with power factor correction function, when operating in battery mode, and when the DC-DC converter is operating in a negative half cycle: the first transistor switch is turned on, the second power The crystal switch is turned on, the third transistor switch is turned on, and the fourth transistor switch is turned on, and the energy storage unit is an energy storage operation; and the first transistor switch is turned on, the second transistor switch is turned on, the third transistor switch is turned on, and the fourth The transistor switch is turned off, and the energy storage unit operates for energy release.
進一步而言,所述之具功率因數修正功能之直流對直流轉換器中,儲能單元為電感器、備援電池為鋰電池。 Further, in the DC-DC converter with power factor correction function, the energy storage unit is an inductor, and the backup battery is a lithium battery.
在使用本發明所述之具功率因數修正功能之直流對直流轉換器時,如交流電源正常,交流電源通過第二電路以及第三電路對負載提供 市電模式的供電,其中,第二電路以及第三電路可以對交流電源進行電壓轉換處理(例如:Boost升壓)之後提供給負載;如交流電源異常(例如:突波、欠電壓或停電),第一電路的第一功率開關電路以及第二電路的第二功率開關電路可以透過電路上導通與關斷的控制,使得備援電池輸出的電能可以通過第一功率開關電路進入第二電路以及第三電路進行電壓轉換處理,使得備援電池通過第一功率開關電路、第二電路以及第三電路對負載提供電池模式的供電。 When using the DC-DC converter with power factor correction function according to the present invention, if the AC power is normal, the AC power is provided to the load through the second circuit and the third circuit Power supply in mains mode, where the second circuit and the third circuit can perform voltage conversion processing (for example: Boost) on the AC power supply and provide it to the load; if the AC power supply is abnormal (for example: surge, undervoltage or power failure), The first power switch circuit of the first circuit and the second power switch circuit of the second circuit can be controlled by the on and off of the circuit, so that the power output by the backup battery can enter the second circuit and the second circuit through the first power switch circuit The three circuits perform voltage conversion processing, so that the backup battery provides battery mode power supply to the load through the first power switch circuit, the second circuit, and the third circuit.
為此,在交流電源異常時,僅透過第一功率開關電路,即可使得備援電池通過第二電路以及第三電路進行電壓轉換處理,而不需要額外獨立於交流電源流經路徑之外的其他電壓轉換電路(例如:Push-Pull轉換器),本發明透過線路架構簡化的改進,不需要佔據額外的電路板體積與其佈線面積,可以減少電路板基材與製程時間,進而解決不斷電系統之體積與成本增加的技術問題,而達到降低生產成本、提高生產效率以及使用上便攜使用之目的。 For this reason, when the AC power supply is abnormal, only the first power switch circuit can make the backup battery perform voltage conversion processing through the second circuit and the third circuit, and does not need to be independent of the AC power supply flow path. For other voltage conversion circuits (such as Push-Pull converters), the present invention simplifies the improvement of the circuit architecture, does not need to occupy additional circuit board volume and wiring area, can reduce the circuit board substrate and process time, and thus solve the uninterrupted power supply The technical problem of increasing the volume and cost of the system has achieved the goals of reducing production costs, improving production efficiency and being portable for use.
為了能更進一步瞭解本發明為達成預定目的所採取之技術、手段及功效,請參閱以下有關本發明之詳細說明與附圖,相信本發明特徵與特點,當可由此得一深入且具體之瞭解,然而所附圖式僅提供參考與說明用,並非用來對本發明加以限制者。 In order to further understand the technology, means and effects of the present invention to achieve the intended purpose, please refer to the following detailed description and drawings of the present invention. I believe that the features and characteristics of the present invention can be gained an in-depth and specific understanding However, the accompanying drawings are provided for reference and explanation only, and are not intended to limit the present invention.
10:第一電路 10: First circuit
11:第一功率開關電路 11: The first power switch circuit
12:備援電池 12: Backup battery
20:第二電路 20: Second circuit
21:儲能單元 21: Energy storage unit
22:第二功率開關電路 22: Second power switch circuit
30:第三電路 30: Third circuit
D1:第一二極體 D1: the first diode
D2:第二二極體 D2: Second diode
D3:第三二極體 D3: third diode
D4:第四二極體 D4: Fourth diode
L1:儲能單元 L1: Energy storage unit
200:負載 200: load
300:輸入濾波電路 300: input filter circuit
400:逆變器 400: inverter
500:輸出濾波電路 500: output filter circuit
Q1:第一電晶體開關 Q1: The first transistor switch
Q2:第二電晶體開關 Q2: Second transistor switch
Q3:第三電晶體開關 Q3: third transistor switch
Q4:第四電晶體開關 Q4: Fourth transistor switch
C1:第一電容器 C1: the first capacitor
C2:第二電容器 C2: second capacitor
L:火線端 L: FireWire
N:中性線端 N: Neutral terminal
Lns1:第一儲能路徑 Lns1: the first energy storage path
Lns2:第二儲能路徑 Lns2: second energy storage path
Lns3:第三儲能路徑 Lns3: third energy storage path
Lns4:第四儲能路徑 Lns4: fourth energy storage path
Lnr1:第一釋能路徑 Lnr1: the first energy release path
Lnr2:第二釋能路徑 Lnr2: the second energy release path
Lnr3:第三釋能路徑 Lnr3: The third energy release path
Lnr4:第四釋能路徑 Lnr4: the fourth energy release path
B1:備援電池 B1: Backup battery
圖1 為本發明所述具功率因數修正功能之直流對直流轉換器之一實施例配置於不斷電系統中的架構示意圖; 圖2 為本發明所述具功率因數修正功能之直流對直流轉換器之該實施例的電路示意圖;圖3 為本發明所述具功率因數修正功能之直流對直流轉換器之該實施例運作於市電模式且正半週操作時的第一儲能路徑示意圖;圖4 為本發明所述具功率因數修正功能之直流對直流轉換器之該實施例運作於市電模式且正半週操作時的第一釋能路徑示意圖;圖5 為本發明所述具功率因數修正功能之直流對直流轉換器之該實施例運作於市電模式且負半週操作時的第二儲能路徑示意圖;圖6 為本發明所述具功率因數修正功能之直流對直流轉換器之該實施例運作於市電模式且負半週操作時的第二釋能路徑示意圖;圖7 為本發明所述具功率因數修正功能之直流對直流轉換器之該實施例運作於電池模式且正半週操作時的第三儲能路徑示意圖;圖8 為本發明所述具功率因數修正功能之直流對直流轉換器之該實施例運作於電池模式且正半週操作時的第三釋能路徑示意圖;圖9 為本發明所述具功率因數修正功能之直流對直流轉換器之該實施例運作於電池模式且負半週操作時的第四儲能路徑示意圖;圖10 為本發明所述具功率因數修正功能之直流對直流轉換器之該實施例運作於電池模式且負半週操作時的第四釋能路徑示意圖;以及圖11 為本發明所述具功率因數修正功能之直流對直流轉換器之另一實施例運作於市電模式且負半週操作時的第五釋能路徑示意圖。 FIG. 1 is a schematic structural diagram of an embodiment of a DC-DC converter with power factor correction function configured in an uninterruptible power system according to the present invention; FIG. 2 is a circuit schematic diagram of the embodiment of the DC-DC converter with power factor correction function of the present invention; FIG. 3 is an embodiment of the DC-DC converter with power factor correction function of the present invention operating in The schematic diagram of the first energy storage path in the mains mode and the positive half cycle operation; FIG. 4 is the first embodiment of the DC-DC converter with power factor correction function according to the present invention operating in the mains mode and the positive half cycle operation. A schematic diagram of an energy release path; FIG. 5 is a schematic diagram of a second energy storage path when the embodiment of the DC-DC converter with power factor correction function according to the present invention operates in a commercial power mode and operates in a negative half cycle; FIG. 6 is a diagram The second energy-releasing path diagram of the embodiment of the DC-DC converter with power factor correction function in the invention operating in the mains mode and negative half-cycle operation; FIG. 7 is the DC with power factor correction function of the invention The schematic diagram of the third energy storage path when the embodiment of the DC converter operates in the battery mode and the positive half cycle operation; FIG. 8 is the embodiment of the DC-DC converter with power factor correction function according to the present invention. FIG. 9 is a schematic diagram of a third energy release path during battery mode and positive half cycle operation; FIG. 9 is the first embodiment of the DC-to-DC converter with power factor correction function of the present invention operating in battery mode and negative half cycle operation. Four energy storage path diagrams; FIG. 10 is a schematic diagram of a fourth energy release path when the embodiment of the DC-DC converter with power factor correction function of the present invention operates in battery mode and negative half cycle operation; and FIG. 11 is Another embodiment of the DC-to-DC converter with power factor correction function according to the present invention is a schematic diagram of a fifth energy release path when operating in a commercial power mode and operating in a negative half cycle.
以下係藉由特定的具體實施例說明本發明之實施方式,熟悉此技術之人士可由本說明書所揭示之內容輕易地瞭解本發明之其他優點及功效。本發明亦可藉由其他不同的具體實例加以施行或應用,本發明說明書中的各項細節亦可基於不同觀點與應用在不悖離本發明之精神下進行各種修飾與變更。 The following is a description of the embodiments of the present invention by specific specific examples. Those skilled in the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification. The present invention can also be implemented or applied by other different specific examples. Various details in the description of the present invention can also be modified and changed based on different viewpoints and applications without departing from the spirit of the present invention.
須知,本說明書所附圖式繪示之結構、比例、大小、元件數量等,均僅用以配合說明書所揭示之內容,以供熟悉此技術之人士瞭解與閱讀,並非用以限定本發明可實施之限定條件,故不具技術上之實質意義,任何結構之修飾、比例關係之改變或大小之調整,在不影響本發明所能產生之功效及所能達成之目的下,均應落在本發明所揭示之技術內容得能涵蓋之範圍內。 It should be noted that the structure, proportion, size, number of elements, etc. shown in the drawings in this specification are only used to match the contents disclosed in the specification for those familiar with this technology to understand and read, not to limit the invention. The implementation of the limited conditions, so it does not have the technical significance, any structural modification, proportional relationship change or size adjustment, without affecting the effectiveness of the present invention can be achieved and the purpose can be achieved, should fall within this The technical content disclosed by the invention can be covered.
茲有關本發明之技術內容及詳細說明,配合圖式說明如下。 The technical content and detailed description of the present invention are explained below in conjunction with the drawings.
請參閱圖1及圖2所示,其中,圖1為本發明所述具功率因數修正功能之直流對直流轉換器之一實施例配置於不斷電系統中的架構示意圖;圖2為本發明所述具功率因數修正功能之直流對直流轉換器之該實施例的電路示意圖。本發明的具功率因數修正功能之直流對直流轉換器之一實施例,應用於對負載200提供市電模式或電池模式的不斷電供電,具功率因數修正功能之直流對直流轉換器包括:第一電路10、第二電路20以及第三電路30。
Please refer to FIG. 1 and FIG. 2, wherein FIG. 1 is a schematic structural view of an embodiment of a DC-DC converter with power factor correction function configured in a continuous power system according to the present invention; FIG. 2 is a schematic view of the present invention The circuit schematic diagram of the embodiment of the DC-DC converter with power factor correction function. One embodiment of the DC-DC converter with power factor correction function of the present invention is applied to provide continuous power supply to the
其中,第一電路10耦接交流電源的火線端L;第一電路10包括串聯耦接的第一功率開關電路11以及備援電池12(如圖中元件標記
B1,在本實施例中為鋰電池);其中,第一功率開關電路11耦接火線端。詳細而言,第一功率開關電路11包括串聯耦接的第一二極體D1以及第一電晶體開關Q1;其中,第一二極體D1耦接火線端L以及第二電路20的儲能單元21(如圖中元件標記L1,在本實施例中為電感器),第一電晶體開關Q1耦接備援電池B1。
Among them, the
第二電路20耦接交流電源的火線端L以及中性線端N,且第二電路20耦接第一電路10;第二電路20包括串聯耦接的儲能單元21以及第二功率開關電路22;其中,儲能單元L1耦接火線端L以及第一功率開關電路11,第二功率開關電路22耦接中性線端N以及備援電池B1。詳細而言,第二功率開關電路22包括第四電晶體開關Q4以及串聯耦接的第二電晶體開關Q2以及第三電晶體開關Q3;其中,第四電晶體開關Q4的一端耦接第二電晶體開關Q2以及第三電晶體開關Q3,第四電晶體開關Q4的另一端耦接備援電池B1以及第三電路30;其中,第二電晶體開關Q2耦接儲能單元L1以及第三電路30,第三電晶體開關Q3耦接中性線端N。
The
第三電路30耦接第一電路10、第二電路20以及中性線端N;其中,第三電路30耦接第一電路10的備援電池B1、第二電路20的儲能單元L1以及第二功率開關電路22。詳細而言,第三電路30包括串聯耦接的第二二極體D2、第三二極體D3、第一電容器C1以及第二電容器C2;其中,第二二極體D2耦接第二電路20的第四電晶體開關Q4以及第一電路10的備援電池B1,第三二極體D3耦接第二電路20的儲能單元L1以及第二電晶體開關Q2,第一電容器C1以及第二電容器C2耦接中性線端N以及第二電路20的第三電晶體開關Q3。
The
附帶一提,前述的各電晶體開關可為,例如但不限制是金屬氧化物半導體場效電晶體(MOSFET)、雙載子接面電晶體(BJT)或絕緣柵雙極電晶體(IGBT)。 Incidentally, the aforementioned respective transistor switches may be, for example but not limited to, metal oxide semiconductor field effect transistors (MOSFET), double carrier junction transistors (BJT) or insulated gate bipolar transistors (IGBT) .
在本發明之所述實施例中,所述具功率因數修正功能之直流對直流轉換器是耦接輸入濾波電路300,其係可為EMI濾波電路,用以濾除輸入之交流電源的電磁干擾(Electromagnetic Interference,EMI)等雜訊(如圖1所示),且所述具功率因數修正功能之直流對直流轉換器透過耦接逆變器400對所述具功率因數修正功能之直流對直流轉換器輸出的直流供電進行為交流供電的轉換,以及透過耦接輸出濾波電路500,其係可為EMI濾波電路,用以濾除輸出至負載200的電磁干擾等雜訊。其中,當交流電源正常時,交流電源通過第二電路20以及第三電路30對負載200提供市電模式的供電;當交流電源異常時,備援電池B1通過第一功率開關電路11、第二電路20以及第三電路30對負載200提供電池模式的供電。
In the embodiment of the present invention, the DC-to-DC converter with power factor correction function is coupled to the
請參閱圖3、圖4所示,圖3為本發明所述具功率因數修正功能之直流對直流轉換器之該實施例運作於市電模式且正半週操作時的第一儲能路徑示意圖;圖4為本發明所述具功率因數修正功能之直流對直流轉換器之該實施例運作於市電模式且正半週操作時的第一釋能路徑示意圖。所述之具功率因數修正功能之直流對直流轉換器當運作於市電模式(交流電源正常時),且當直流對直流轉換器為正半週操作時:如圖3所示,通過控制第一電晶體開關Q1關斷、第二電晶體開關Q2導通、第三電晶體開關Q3導通且第四電晶體開關Q4關斷,此時,儲能單元L1為儲能操作(energy-storing operation);當儲能單元L1為 儲能操作時,火線端L、儲能單元L1、第二電晶體開關Q2、第三電晶體開關Q3以及中性線端N形成對儲能單元L1儲能的第一儲能路徑Lns1;以及如圖4所示,通過控制第一電晶體開關Q1關斷、第二電晶體開關Q2關斷、第三電晶體開關Q3關斷且第四電晶體開關Q4關斷,此時,儲能單元L1為釋能操作(energy-releasing operation);當儲能單元L1為釋能操作時,火線端L、儲能單元L1、第三二極體D3、第一電容器C1以及中性線端N形成儲能單元L1釋能的第一釋能路徑Lnr1。 Please refer to FIG. 3 and FIG. 4. FIG. 3 is a schematic diagram of a first energy storage path when the embodiment of the DC-DC converter with power factor correction function according to the present invention operates in a commercial mode and is operating in a positive half cycle; FIG. 4 is a schematic diagram of a first energy release path when the embodiment of the DC-DC converter with power factor correction function according to the present invention operates in the commercial mode and operates in the positive half cycle. The DC-to-DC converter with power factor correction function described above operates in the mains mode (when the AC power supply is normal), and when the DC-to-DC converter is operating in the positive half cycle: as shown in FIG. 3, by controlling the first The transistor switch Q1 is turned off, the second transistor switch Q2 is turned on, the third transistor switch Q3 is turned on, and the fourth transistor switch Q4 is turned off. At this time, the energy storage unit L1 is an energy-storing operation; When the energy storage unit L1 is During the energy storage operation, the live terminal L, the energy storage unit L1, the second transistor switch Q2, the third transistor switch Q3, and the neutral terminal N form a first energy storage path Lns1 for storing energy in the energy storage unit L1; and As shown in FIG. 4, by controlling the first transistor switch Q1 to turn off, the second transistor switch Q2 to turn off, the third transistor switch Q3 to turn off, and the fourth transistor switch Q4 to turn off, at this time, the energy storage unit L1 is an energy-releasing operation; when the energy storage unit L1 is an energy-releasing operation, the live terminal L, the energy storage unit L1, the third diode D3, the first capacitor C1 and the neutral terminal N are formed The first energy release path Lnr1 of the energy storage unit L1 releases energy.
請參閱圖5、圖6所示,圖5為本發明所述具功率因數修正功能之直流對直流轉換器之該實施例運作於市電模式且負半週操作時的第二儲能路徑示意圖;圖6為本發明所述具功率因數修正功能之直流對直流轉換器之該實施例運作於市電模式且負半週操作時的第二釋能路徑示意圖。所述之具功率因數修正功能之直流對直流轉換器當運作於市電模式(交流電源正常時),且當直流對直流轉換器為負半週操作時:如圖5所示,通過控制第一電晶體開關Q1關斷、第二電晶體開關Q2導通、第三電晶體開關Q3導通且第四電晶體開關Q4關斷,此時,儲能單元L1為儲能操作;當儲能單元L1為儲能操作時,中性線端N、第三電晶體開關Q3、第二電晶體開關Q2、儲能單元L1以及火線端L形成對儲能單元L1儲能的第二儲能路徑Lns2。 Please refer to FIG. 5 and FIG. 6. FIG. 5 is a schematic diagram of a second energy storage path when the embodiment of the DC-DC converter with power factor correction function according to the present invention operates in a commercial mode and operates in a negative half cycle; FIG. 6 is a schematic diagram of a second energy release path when the embodiment of the DC-DC converter with power factor correction function according to the present invention operates in a commercial power mode and operates in a negative half cycle. The DC-to-DC converter with power factor correction function described above operates in the mains mode (when the AC power supply is normal), and when the DC-to-DC converter is operating in a negative half cycle: as shown in FIG. 5, by controlling the first Transistor switch Q1 is off, second transistor switch Q2 is on, third transistor switch Q3 is on and fourth transistor switch Q4 is off. At this time, the energy storage unit L1 is an energy storage operation; when the energy storage unit L1 is During the energy storage operation, the neutral terminal N, the third transistor switch Q3, the second transistor switch Q2, the energy storage unit L1, and the live terminal L form a second energy storage path Lns2 that stores energy to the energy storage unit L1.
如圖6所示,通過控制第一電晶體開關Q1關斷、第二電晶體開關Q2關斷、第三電晶體開關Q3關斷且第四電晶體開關Q4關斷,此時,儲能單元L1為釋能操作;當儲能單元L1為釋能操作時,中性線端N、 第二電容器C2、第二二極體D2、第四電晶體開關Q4、第二電晶體開關Q2、儲能單元L1以及火線端L形成儲能單元L1釋能的第二釋能路徑Lnr2。附帶一提,對於儲能單元L1的釋能操作而言,由於第二電晶體開關Q2與第四電晶體開關Q4為關斷的狀態,因此儲能單元L1釋能的第二釋能路徑Lnr2係經由第二電晶體開關Q2的反向(寄生)二極體以及第四電晶體開關Q4的反向(寄生)二極體所提供的續流路徑所達成。 As shown in FIG. 6, by controlling the first transistor switch Q1 to turn off, the second transistor switch Q2 to turn off, the third transistor switch Q3 to turn off, and the fourth transistor switch Q4 to turn off, at this time, the energy storage unit L1 is the energy release operation; when the energy storage unit L1 is the energy release operation, the neutral terminal N, The second capacitor C2, the second diode D2, the fourth transistor switch Q4, the second transistor switch Q2, the energy storage unit L1, and the live terminal L form a second energy release path Lnr2 for energy release of the energy storage unit L1. Incidentally, for the energy releasing operation of the energy storage unit L1, since the second transistor switch Q2 and the fourth transistor switch Q4 are in an off state, the second energy releasing path Lnr2 of the energy storing unit L1 to release energy This is achieved through the freewheeling path provided by the reverse (parasitic) diode of the second transistor switch Q2 and the reverse (parasitic) diode of the fourth transistor switch Q4.
請參閱圖7、圖8所示,圖7為本發明所述具功率因數修正功能之直流對直流轉換器之該實施例運作於電池模式且正半週操作時的第三儲能路徑示意圖;圖8為本發明所述具功率因數修正功能之直流對直流轉換器之該實施例運作於電池模式且正半週操作時的第三釋能路徑示意圖。所述之具功率因數修正功能之直流對直流轉換器當運作於電池模式(交流電源異常時),且當直流對直流轉換器為正半週操作時:如圖7所示,通過控制第一電晶體開關Q1導通、第二電晶體開關Q2導通、第三電晶體開關Q3導通且第四電晶體開關Q4導通,此時,儲能單元L1為儲能操作;當儲能單元L1為儲能操作時,備援電池B1的正極、第一電晶體開關Q1、第一二極體D1、儲能單元L1、第二電晶體開關Q2、第四電晶體開關Q4以及備援電池B1的負極形成對儲能單元L1儲能的第三儲能路徑Lns3。 Please refer to FIG. 7 and FIG. 8. FIG. 7 is a schematic diagram of a third energy storage path when the embodiment of the DC-DC converter with power factor correction function of the present invention operates in a battery mode and is operating in a positive half cycle; FIG. 8 is a schematic diagram of a third energy release path when the embodiment of the DC-DC converter with power factor correction function of the present invention operates in a battery mode and operates in a positive half cycle. The DC-to-DC converter with power factor correction function described above operates in battery mode (when the AC power supply is abnormal), and when the DC-to-DC converter is operating in the positive half cycle: as shown in FIG. 7, by controlling the first The transistor switch Q1 is turned on, the second transistor switch Q2 is turned on, the third transistor switch Q3 is turned on, and the fourth transistor switch Q4 is turned on. At this time, the energy storage unit L1 is an energy storage operation; when the energy storage unit L1 is an energy storage During operation, the positive electrode of the backup battery B1, the first transistor switch Q1, the first diode D1, the energy storage unit L1, the second transistor switch Q2, the fourth transistor switch Q4, and the negative electrode of the backup battery B1 are formed The third energy storage path Lns3 storing energy for the energy storage unit L1.
如圖8所示,通過控制第一電晶體開關Q1導通、第二電晶體開關Q2關斷、第三電晶體開關Q3導通且第四電晶體開關Q4導通,此時,儲能單元L1為釋能操作;當儲能單元L1為釋能操作,備援電池B1的正極、第一電晶體開關Q1、第一二極體D1、儲能單元L1、第三二極體 D3、第一電容器C1、第三電晶體開關Q3、第四電晶體開關Q4以及備援電池B1的負極形成儲能單元L1釋能的第三釋能路徑Lnr3。 As shown in FIG. 8, by controlling the first transistor switch Q1 to turn on, the second transistor switch Q2 to turn off, the third transistor switch Q3 to turn on, and the fourth transistor switch Q4 to turn on, at this time, the energy storage unit L1 is released Can operate; when the energy storage unit L1 is the energy release operation, the anode of the backup battery B1, the first transistor switch Q1, the first diode D1, the energy storage unit L1, the third diode D3, the first capacitor C1, the third transistor switch Q3, the fourth transistor switch Q4, and the negative electrode of the backup battery B1 form a third energy release path Lnr3 for releasing energy of the energy storage unit L1.
請參閱圖9、圖10所示,圖9為本發明所述具功率因數修正功能之直流對直流轉換器之該實施例運作於電池模式且負半週操作時的第四儲能路徑示意圖;圖10為本發明所述具功率因數修正功能之直流對直流轉換器之該實施例運作於電池模式且負半週操作時的第四釋能路徑示意圖。所述之具功率因數修正功能之直流對直流轉換器當運作於電池模式(交流電源異常時),且當直流對直流轉換器為負半週操作時:如圖9所示,通過控制第一電晶體開關Q1導通、第二電晶體開關Q2導通、第三電晶體開關Q3導通且第四電晶體開關Q4導通,此時,儲能單元L1為儲能操作;當儲能單元L1為儲能操作時,備援電池B1的正極、第一電晶體開關Q1、第一二極體D1、儲能單元L1、第二電晶體開關Q2、第四電晶體開關Q4以及備援電池B1的負極形成對儲能單元L1儲能的第四儲能路徑Lns4。 Please refer to FIG. 9 and FIG. 10. FIG. 9 is a schematic diagram of a fourth energy storage path when the embodiment of the DC-DC converter with power factor correction function of the present invention operates in a battery mode and operates in a negative half cycle; FIG. 10 is a schematic diagram of a fourth energy release path when the embodiment of the DC-DC converter with power factor correction function of the present invention operates in a battery mode and operates in a negative half cycle. The DC-to-DC converter with power factor correction function described above operates in battery mode (when the AC power supply is abnormal), and when the DC-to-DC converter is operating in a negative half cycle: as shown in FIG. 9, by controlling the first The transistor switch Q1 is turned on, the second transistor switch Q2 is turned on, the third transistor switch Q3 is turned on, and the fourth transistor switch Q4 is turned on. At this time, the energy storage unit L1 is an energy storage operation; when the energy storage unit L1 is an energy storage During operation, the positive electrode of the backup battery B1, the first transistor switch Q1, the first diode D1, the energy storage unit L1, the second transistor switch Q2, the fourth transistor switch Q4, and the negative electrode of the backup battery B1 are formed The fourth energy storage path Lns4 storing energy for the energy storage unit L1.
如圖10所示,通過控制第一電晶體開關Q1導通、第二電晶體開關Q2導通、第三電晶體開關Q3導通且第四電晶體開關Q4關斷,此時,儲能單元L1為釋能操作;當儲能單元L1為釋能操作,備援電池B1的正極、第一電晶體開關Q1、第一二極體D1、儲能單元L1、第二電晶體開關Q2、第三電晶體開關Q3、第二電容器C2、第二二極體D2以及備援電池B1的負極形成儲能單元L1釋能的第四釋能路徑Lnr4。 As shown in FIG. 10, by controlling the first transistor switch Q1 to turn on, the second transistor switch Q2 to turn on, the third transistor switch Q3 to turn on, and the fourth transistor switch Q4 to turn off, at this time, the energy storage unit L1 is released Can operate; when the energy storage unit L1 is the energy release operation, the anode of the backup battery B1, the first transistor switch Q1, the first diode D1, the energy storage unit L1, the second transistor switch Q2, the third transistor The switch Q3, the second capacitor C2, the second diode D2, and the negative electrode of the backup battery B1 form a fourth energy release path Lnr4 for releasing energy of the energy storage unit L1.
請參閱圖11所示,為本發明所述具功率因數修正功能之直流對直流轉換器之另一實施例運作於市電模式且負半週操作時的第五釋能路 徑示意圖。其與前述圖6所示運作於市電模式且負半週操作時的該實施例大致相同,惟此實施例比前述該實施例更新增第四二極體D4,第四二極體D4一端耦接儲能單元L1、第二電晶體開關Q2以及第三二極體D3,第四二極體D4的另一端耦接第二二極體D2以及第二電容器C2。 Please refer to FIG. 11, which is a fifth energy-releasing circuit of another embodiment of the DC-DC converter with power factor correction function according to the present invention when it is operated in the mains mode and operates in the negative half cycle Path schematic. It is roughly the same as the embodiment shown in FIG. 6 when it is operating in the commercial power mode and is operating in the negative half cycle, but this embodiment is newer than the previous embodiment by adding a fourth diode D4, which is coupled at one end The energy storage unit L1, the second transistor switch Q2, and the third diode D3 are connected. The other end of the fourth diode D4 is coupled to the second diode D2 and the second capacitor C2.
如圖11所示,通過控制第一電晶體開關Q1關斷、第二電晶體開關Q2關斷、第三電晶體開關Q3關斷且第四電晶體開關Q4關斷,此時,儲能單元L1為釋能操作;當儲能單元L1為釋能操作時,中性線端N、第二電容器C2、第四二極體D4、儲能單元L1以及火線端L形成儲能單元L1釋能的第五釋能路徑Lnr5。相較於圖6所示的第二釋能路徑Lnr2,圖11所示的第五釋能路徑Lnr5在路徑上避免通過第四電晶體開關Q4以及第二電晶體開關Q2,可以有效地減少電晶體開關的導通損失與切換損失、受元件寄生電阻、寄生電容等因素影響而造成的額外功耗以及反應時間的延遲,能夠更進一步地提升轉換效率、電路響應以及降低運轉成本。 As shown in FIG. 11, by controlling the first transistor switch Q1 to turn off, the second transistor switch Q2 to turn off, the third transistor switch Q3 to turn off, and the fourth transistor switch Q4 to turn off, at this time, the energy storage unit L1 is the energy release operation; when the energy storage unit L1 is the energy release operation, the neutral terminal N, the second capacitor C2, the fourth diode D4, the energy storage unit L1 and the live terminal L form the energy storage unit L1 energy release The fifth energy release path Lnr5. Compared to the second energy release path Lnr2 shown in FIG. 6, the fifth energy release path Lnr5 shown in FIG. 11 avoids passing through the fourth transistor switch Q4 and the second transistor switch Q2 in the path, which can effectively reduce the power The conduction loss and switching loss of the crystal switch, the additional power consumption and the delay of the reaction time caused by the parasitic resistance and parasitic capacitance of the device can further improve the conversion efficiency, circuit response and reduce the operating cost.
如前所述,在使用本發明所述之具功率因數修正功能之直流對直流轉換器時,如交流電源正常,交流電源通過第二電路20以及第三電路30對負載200提供市電模式的供電,其中,第二電路20以及第三電路30可以對交流電源進行電壓轉換處理(例如:Boost升壓)之後提供給負載;如交流電源異常(例如:突波、欠電壓或停電),第一電路10的第一功率開關電路11以及第二電路20的第二功率開關電路22可以透過電路上導通與關斷的控制,使得備援電池B1輸出的電能可以通過第一功率開關電路11進入第二電路20以及第三電路30進行電壓轉換處理,使得備援電池B1
通過第一功率開關電路11、第二電路20以及第三電路30對負載提供電池模式的供電。
As mentioned above, when the DC-DC converter with power factor correction function according to the present invention is used, if the AC power supply is normal, the AC power supply provides the mains mode power supply to the
為此,在交流電源異常時,僅透過第一功率開關電路11,即可使得備援電池B1通過第二電路20以及第三電路30進行電壓轉換處理,而不需要額外獨立於交流電源流經路徑之外的其他電壓轉換電路(例如:Push-Pull轉換器),本發明透過線路架構簡化的改進,不需要佔據額外的電路板體積與其佈線面積,可以減少電路板基材與製程時間,進而解決不斷電系統之體積與成本增加的技術問題,而達到降低生產成本、提高生產效率以及使用上便攜使用之目的。
For this reason, when the AC power is abnormal, only the first
除此之外,本發明所述備援電池B1並不是採用傳統的鉛酸電池,而是採用鋰電池搭配使用,習用已知的鉛酸電池具有體積大、重量重、使用壽命短的缺點,為此,本發明所述之具功率因數修正功能之直流對直流轉換器更具有體積小、重量輕、使用壽命與可靠度較佳等的其他優點。 In addition, the backup battery B1 of the present invention is not a traditional lead-acid battery, but a lithium battery. The conventional known lead-acid batteries have the disadvantages of large volume, heavy weight, and short service life. For this reason, the DC-DC converter with power factor correction function described in the present invention has other advantages such as small size, light weight, better service life and reliability.
以上所述,僅為本發明較佳具體實施例之詳細說明與圖式,惟本發明之特徵並不侷限於此,並非用以限制本發明,本發明之所有範圍應以下述之申請專利範圍為準,凡合於本發明申請專利範圍之精神與其類似變化之實施例,皆應包括於本發明之範疇中,任何熟悉該項技藝者在本發明之領域內,可輕易思及之變化或修飾皆可涵蓋在以下本案之專利範圍。 The above is only the detailed description and drawings of the preferred embodiments of the present invention, but the features of the present invention are not limited to this, and are not intended to limit the present invention. All the scope of the present invention should be applied for the following patent scope Subject to the spirit of the patent application scope of the present invention and the embodiments of similar changes, should be included in the scope of the present invention, any person familiar with the art in the field of the present invention, can easily think of changes or Modifications can be covered in the patent scope of the following case.
10:第一電路 10: First circuit
11:第一功率開關電路 11: The first power switch circuit
12:備援電池 12: Backup battery
20:第二電路 20: Second circuit
21:儲能單元 21: Energy storage unit
22:第二功率開關電路 22: Second power switch circuit
30:第三電路 30: Third circuit
200:負載 200: load
300:輸入濾波電路 300: input filter circuit
400:逆變器 400: inverter
500:輸出濾波電路 500: output filter circuit
Claims (13)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
TW107137145A TWI697181B (en) | 2018-10-22 | 2018-10-22 | Dc-to-dc converter with a power factor correction function |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
TW107137145A TWI697181B (en) | 2018-10-22 | 2018-10-22 | Dc-to-dc converter with a power factor correction function |
Publications (2)
Publication Number | Publication Date |
---|---|
TW202017292A TW202017292A (en) | 2020-05-01 |
TWI697181B true TWI697181B (en) | 2020-06-21 |
Family
ID=71895419
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
TW107137145A TWI697181B (en) | 2018-10-22 | 2018-10-22 | Dc-to-dc converter with a power factor correction function |
Country Status (1)
Country | Link |
---|---|
TW (1) | TWI697181B (en) |
Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN103762630A (en) * | 2014-01-03 | 2014-04-30 | 深圳科士达科技股份有限公司 | Rectifier circuit and UPS system thereof |
US9024476B2 (en) * | 2011-07-28 | 2015-05-05 | Schneider Electric It Corporation | Single-battery power topologies for online UPS systems |
CN104638688A (en) * | 2013-11-07 | 2015-05-20 | 艾默生网络能源有限公司 | Single-phase uninterrupted power supply circuit and three-phase uninterrupted power supply circuit |
CN105529942A (en) * | 2014-09-29 | 2016-04-27 | 力博特公司 | PFC rectifier, uninterrupted power source, control method and control device |
CN105529941A (en) * | 2014-09-29 | 2016-04-27 | 力博特公司 | PFC rectifier and uninterrupted power source |
CN105991020A (en) * | 2015-01-30 | 2016-10-05 | 力博特公司 | Power factor correction rectifier and uninterrupted power supply |
TWI612752B (en) * | 2017-02-22 | 2018-01-21 | 亞源科技股份有限公司 | A Boost Modules For Uninterruptible Power Systems |
-
2018
- 2018-10-22 TW TW107137145A patent/TWI697181B/en active
Patent Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US9024476B2 (en) * | 2011-07-28 | 2015-05-05 | Schneider Electric It Corporation | Single-battery power topologies for online UPS systems |
CN104638688A (en) * | 2013-11-07 | 2015-05-20 | 艾默生网络能源有限公司 | Single-phase uninterrupted power supply circuit and three-phase uninterrupted power supply circuit |
CN103762630A (en) * | 2014-01-03 | 2014-04-30 | 深圳科士达科技股份有限公司 | Rectifier circuit and UPS system thereof |
CN105529942A (en) * | 2014-09-29 | 2016-04-27 | 力博特公司 | PFC rectifier, uninterrupted power source, control method and control device |
CN105529941A (en) * | 2014-09-29 | 2016-04-27 | 力博特公司 | PFC rectifier and uninterrupted power source |
CN105991020A (en) * | 2015-01-30 | 2016-10-05 | 力博特公司 | Power factor correction rectifier and uninterrupted power supply |
TWI612752B (en) * | 2017-02-22 | 2018-01-21 | 亞源科技股份有限公司 | A Boost Modules For Uninterruptible Power Systems |
Also Published As
Publication number | Publication date |
---|---|
TW202017292A (en) | 2020-05-01 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
WO2021232785A1 (en) | Three-bridge arm topology apparatus, control method, and uninterrupted power supply system | |
CN109104087B (en) | DC-DC converter with bridgeless power factor correction function | |
US9413227B2 (en) | Converter circuit with power factor correction for converting AC input voltage into DC output voltage | |
TWI513164B (en) | Flyback active clamping power converter | |
WO2021232749A1 (en) | Three-bridge-arm topological device and uninterrupted power supply system | |
CN109104086B (en) | DC-DC converter with power factor correction function | |
CN109391135B (en) | Power-down holding circuit and switching power supply | |
TW200402928A (en) | Power converter | |
US7710087B2 (en) | Power converter and power converting method | |
TWI704747B (en) | Uninterruptible power system | |
TWI705643B (en) | Uninterruptible power system | |
TWI697181B (en) | Dc-to-dc converter with a power factor correction function | |
US20150171663A1 (en) | Uninterruptible power systems using current source rectifiers and methods of operating the same | |
TWI705650B (en) | Dc-to-dc converter with bridgeless power factor correction function | |
CN110867949A (en) | Uninterrupted power system | |
US12046945B2 (en) | Power supply apparatus and power supply system | |
CN111327194B (en) | Power converter and power supply device sharing direct-current power supply | |
CN209545242U (en) | The switching circuit in common-battery pond and non-battery architecture altogether can be achieved | |
TWI729333B (en) | Power converter with common dc power source and power supply apparatus having the same | |
CN110429704A (en) | A kind of uninterrupted power system | |
TWI743929B (en) | Conversion device with three-level switching circuit and operation method of three-level switching circuit | |
CN201910739U (en) | Full-bridge phase-shift soft switching circuit | |
TWM584056U (en) | A switching circuit capable of a common battery and a non-common battery structure | |
TW201513540A (en) | Parallel input serial/parallel output isolation type DC/DC converter for wind power system | |
TWI410785B (en) | Power supply circuit and system |