TW201519565A - AC-AC voltage transformation device and voltage transformation method thereof - Google Patents
AC-AC voltage transformation device and voltage transformation method thereof Download PDFInfo
- Publication number
- TW201519565A TW201519565A TW102139822A TW102139822A TW201519565A TW 201519565 A TW201519565 A TW 201519565A TW 102139822 A TW102139822 A TW 102139822A TW 102139822 A TW102139822 A TW 102139822A TW 201519565 A TW201519565 A TW 201519565A
- Authority
- TW
- Taiwan
- Prior art keywords
- diode
- coil
- transformer
- electronic switch
- alternating current
- Prior art date
Links
Abstract
Description
本發明係與電源轉換有關;特別是指一種交交流變壓裝置及其變壓方法。 The invention relates to power conversion; in particular to an AC alternating voltage transformer and a transformer method thereof.
傳統變壓器大多以一、二側線圈間之匝數比之設計做為升降壓之依據,而導致傳統變壓器具有體積大、成本高、無保護電路且不適用於交交流轉換等缺點。為改善上述缺點,遂有業者研發如圖1所示之電子式交交流變壓裝置,交流電源300透過橋式整流器30將能量儲存於電容器C1、C2,當主動開關S1導通時,儲存於電容器C1的能量經過主動開關S1並透過變壓器40變壓後傳送至負載400,而當主動開關S2導通時,儲存於電容器C2的能量經過主動開關S2並透過變壓器40變壓傳送至負載400,如此一來,透過上述動作的切換,便可達到將變壓後之交流電能供予負載400之目的。 Conventional transformers mostly use the turns ratio between the one and two side coils as the basis for the buck-boost, which leads to the disadvantages of large size, high cost, no protection circuit and not suitable for AC conversion. In order to improve the above disadvantages, a manufacturer has developed an electronic AC voltage transformer device as shown in FIG. 1. The AC power source 300 stores energy in the capacitors C1 and C2 through the bridge rectifier 30, and stores the capacitor in the capacitor when the active switch S1 is turned on. The energy of C1 is transmitted to the load 400 through the active switch S1 and transformed by the transformer 40, and when the active switch S2 is turned on, the energy stored in the capacitor C2 is transmitted to the load 400 through the active switch S2 and transmitted through the transformer 40, so that Therefore, the switching of the above-mentioned actions can achieve the purpose of supplying the converted AC power to the load 400.
然而,上述之設計為達到較佳之能量緩衝效果,電容C1、C2通常會使用單價較高之大容值電容器,不僅增加了體積,同時也增加了成本支出,更會因電容器充放電能之次數限制,而使得交交流變壓裝置無法具有較長的使用壽命。除此之外,上述之交交流變壓裝置之電路設計亦有安全之疑慮,意即,若主動開關S1、S2同時導通時,則會造成內部線路短路導致燒毀之情形發生。 However, the above design is to achieve a better energy buffering effect. Capacitors C1 and C2 usually use a large-capacity capacitor with a higher unit price, which not only increases the volume, but also increases the cost, and the number of times the capacitor can be charged and discharged. Restriction, so that the AC alternating voltage transformer can not have a long service life. In addition, the circuit design of the above-mentioned alternating current transformer device also has safety concerns, that is, if the active switches S1 and S2 are simultaneously turned on, the inner circuit short circuit may cause the burning to occur.
有鑑於此,本發明之目的用於提供一種交交流變壓裝置及其變壓方法,不僅安全、使用壽命長且電路操作簡單。 In view of this, the object of the present invention is to provide an AC alternating voltage transformer and a method for transforming the same, which are not only safe, have a long service life, and are simple in circuit operation.
緣以達成上述目的,本發明所提供交交流變壓裝置用以將一交流電源之電能的電壓改變後輸出供予一負載,且該交流電源具有一第一端以及一第二端;該交交流變壓裝置包含有一第一二極體、一第二二極體、一第三二極體、一第四二極體、一變壓器、一電子開關以及一控制模組。其中,該第一二極體之正極與該交流電源之第一端連接。該第二二極體之負極連接至該第一二極體之正極與該交流電源之第一端的連接處。該第三二極體之正極與該交流電源之第二端連接。該第四二極體之負極連接至該第三二極體之正極與該交流電源之第二端的連接處,而其正極連接至該二二極體之正極。該變壓器具有一一次側以及一二次側,該一次側具有一第一線圈以及一第二線圈,該第一線圈一端與該第二線圈一端連接,且該第一線圈另一端與該第一二極體之負極連接,而該第二線圈之另一端與該第三二極體之負極連接;該二次側與該負載連接。該電子開關一端連接至該第二二極體之正極與該第四二極體之正極的連接處,另一端連接至該第一線圈與該第二線圈之連接處。該控制模組與該電子開關電性連接,用以控制該電子開關導通或阻斷。 In order to achieve the above object, the AC alternating voltage transformer device provided by the present invention is configured to change a voltage of an alternating current power source and output it to a load, and the alternating current power source has a first end and a second end; The AC voltage transformer includes a first diode, a second diode, a third diode, a fourth diode, a transformer, an electronic switch, and a control module. The anode of the first diode is connected to the first end of the alternating current power source. The cathode of the second diode is connected to the junction of the anode of the first diode and the first end of the AC power source. The anode of the third diode is connected to the second end of the alternating current power source. The cathode of the fourth diode is connected to the junction of the anode of the third diode and the second end of the AC power source, and the anode thereof is connected to the anode of the diode. The transformer has a primary side and a secondary side, the primary side has a first coil and a second coil, one end of the first coil is connected to one end of the second coil, and the other end of the first coil and the first A cathode of the diode is connected, and the other end of the second coil is connected to a cathode of the third diode; the secondary side is connected to the load. The electronic switch is connected at one end to a junction of a positive pole of the second diode and a positive pole of the fourth diode, and the other end is connected to a junction of the first coil and the second coil. The control module is electrically connected to the electronic switch to control whether the electronic switch is turned on or off.
依據上述構思,本發明更提供有該交交流變壓裝置之變壓方法,包含有下列步驟:A.導通該電子開關,使該交流電源之電能通過該第一二極體、該第一線圈、該電子開關與該第四二極體,或是通過該第三二極體、該第二線圈、該電子 開關與該第二二極體,而使該交流電源透過該變壓器將電能由該二次側輸出至該負載;B.阻斷該電子開關,使該交流電源與該一次側之間呈斷路,而使該變壓器之二次側停止輸出電能予該負載。 According to the above concept, the present invention further provides a method for transforming the alternating current transformer device, comprising the steps of: A. conducting the electronic switch, and passing the electrical energy of the alternating current source through the first diode, the first coil The electronic switch and the fourth diode, or the third diode, the second coil, the electron a switch and the second diode, wherein the AC power source outputs electrical energy from the secondary side to the load through the transformer; B. blocking the electronic switch to open the AC power source and the primary side, The secondary side of the transformer stops outputting electrical energy to the load.
依據上述構思,於步驟A中,當該交流電源之電能為正半波時,則通過該第一二極體、該第一線圈、該電子開關與該第四二極體;當該交流電源之電能為負半波時,則通過該第三二極體、該第二線圈、該電子開關與該第二二極體。 According to the above concept, in step A, when the electrical energy of the alternating current power source is a positive half wave, the first diode, the first coil, the electronic switch and the fourth diode are passed; when the alternating current power source When the electric energy is a negative half wave, the third diode, the second coil, the electronic switch and the second diode are passed.
藉此,透過上述結構與方法之設計,便可使該交交流變壓裝置具有安全、使用壽命長且電路操作簡單之優點。 Thereby, through the design of the above structure and method, the AC alternating current transformer device can have the advantages of safety, long service life and simple circuit operation.
D1~D4‧‧‧二極體 D1~D4‧‧‧ Diode
SW‧‧‧電子開關 SW‧‧‧Electronic switch
10‧‧‧變壓器 10‧‧‧Transformers
11‧‧‧一次側 11‧‧‧First side
N1‧‧‧第一線圈 N1‧‧‧ first coil
N2‧‧‧第二線圈 N2‧‧‧second coil
N3‧‧‧第三線圈 N3‧‧‧ third coil
12‧‧‧二次側 12‧‧‧second side
20‧‧‧控制模組 20‧‧‧Control Module
21‧‧‧迴授控制電路 21‧‧‧Feedback control circuit
211‧‧‧電壓偵測端 211‧‧‧voltage detection terminal
212‧‧‧電流偵測端 212‧‧‧current detection terminal
213‧‧‧輸出端 213‧‧‧ Output
22‧‧‧脈衝寬度調變電路 22‧‧‧ pulse width modulation circuit
23‧‧‧震盪線圈變換器電路 23‧‧‧Shock coil converter circuit
100‧‧‧交流電源 100‧‧‧AC power supply
110‧‧‧第一端 110‧‧‧ first end
120‧‧‧第二端 120‧‧‧second end
200‧‧‧負載 200‧‧‧load
C1、C2‧‧‧電容器 C1, C2‧‧‧ capacitor
S1、S2‧‧‧主動開關 S1, S2‧‧‧ active switch
30‧‧‧橋式整流器 30‧‧‧Bridge rectifier
40‧‧‧變壓器 40‧‧‧Transformers
300‧‧‧交流電源 300‧‧‧AC power supply
400‧‧‧負載 400‧‧‧load
圖1為習用交交流變壓裝置之電路結構圖;圖2為本發明第一較佳實施例之電路結構圖;圖3為正半波時之等效電路圖;圖4為負半波時之等效電路圖;圖5為本發明第二較佳實施例之電路結構圖;圖6為本發明第三較佳實施例之電路結構圖;圖7為本發明第四較佳實施例之電路結構圖。 1 is a circuit structural diagram of a conventional AC alternating voltage transformer; FIG. 2 is a circuit configuration diagram of a first preferred embodiment of the present invention; FIG. 3 is an equivalent circuit diagram of a positive half wave; FIG. 4 is a negative half wave FIG. 5 is a circuit structural diagram of a second preferred embodiment of the present invention; FIG. 6 is a circuit configuration diagram of a third preferred embodiment of the present invention; FIG. Figure.
為能更清楚地說明本發明,茲舉較佳實施例並 配合圖示詳細說明如後。請參圖2所示,本發明一較佳實施例之交交流變壓裝置用以將一交流電源100之電能的電壓改變後輸出供予一負載200,且該交流電源100具有一第一端110以及一第二端120。該交交流變壓裝置包含有四個二極體(第一二極體D1至第四二極體D4)、一變壓器10、一電子開關SW以及一控制模組20。其中:該第一二極體D1之正極與該交流電源100之第一端110連接。 In order to more clearly illustrate the invention, the preferred embodiment is The detailed description with the illustration is as follows. Referring to FIG. 2, an alternating current transformer device according to a preferred embodiment of the present invention is configured to change a voltage of an electric power of an alternating current power source 100 and output it to a load 200, and the alternating current power source 100 has a first end. 110 and a second end 120. The AC alternating voltage transformer includes four diodes (a first diode D1 to a fourth diode D4), a transformer 10, an electronic switch SW, and a control module 20. The anode of the first diode D1 is connected to the first end 110 of the AC power source 100.
該第二二極體D2之負極連接至該第一二極體D1之正極與該交流電源100之第一端110的連接處。 The cathode of the second diode D2 is connected to the junction of the anode of the first diode D1 and the first end 110 of the AC power source 100.
該第三二極體D3之正極與該交流電源100之第二端120連接。 The anode of the third diode D3 is connected to the second end 120 of the AC power source 100.
該第四二極體D4之負極連接至該第三二極體D3之正極與該交流電源100之第二端120的連接處,而其正極連接至該二二極體D2之正極。 The cathode of the fourth diode D4 is connected to the junction of the anode of the third diode D3 and the second terminal 120 of the AC power source 100, and the anode thereof is connected to the anode of the diode D2.
該變壓器10具有一一次側11以及一二次側12,且於本實施例中,該變壓器10為中間抽頭式變壓器,使該一次側11具有一第一線圈N1以及一第二線圈N2,且該第一線圈N1一端與該第二線圈N2一端連接,而該第一線圈N1另一端則與該第一二極體D1之負極連接,且該第二線圈N2之另一端與該第三二極體D3之負極連接。該二次側12與該負載200連接。 The transformer 10 has a primary side 11 and a secondary side 12, and in the embodiment, the transformer 10 is a center tapped transformer, such that the primary side 11 has a first coil N1 and a second coil N2. One end of the first coil N1 is connected to one end of the second coil N2, and the other end of the first coil N1 is connected to the negative pole of the first diode D1, and the other end of the second coil N2 is opposite to the third The negative electrode of the diode D3 is connected. The secondary side 12 is connected to the load 200.
該電子開關SW一端連接至該第二二極體D2之正極與該第四二極體D4之正極的連接處,另一端連接至該第一線圈N1與該第二線圈N2之連接處,且可受控制地導通或阻斷。 One end of the electronic switch SW is connected to the junction of the anode of the second diode D2 and the anode of the fourth diode D4, and the other end is connected to the junction of the first coil N1 and the second coil N2, and Controlled to conduct or block.
該控制模組20與該電子開關SW電性連接,用以控制該電子開關SW導通或阻斷。於本實施例中,該控制 模組20包含有一迴授控制電路21以及一脈衝寬度調變(Pulse Width Modulation,PWM)電路22,其中該迴授控制電路21具有一電壓偵測端211、一電流偵測端212以及一輸出端213,該電壓偵測端211與該電流偵測端212電性連接至該變壓器10一次側11處,以偵測該變壓器10一次側11處之電壓與電流,使該輸出端213輸出對應之訊號。本實施例中之電壓偵測端211係連接至該交流電源100以測得供予該一次側11的電壓,而該電流偵測端212係連接至該電子開關SW與該第二二極體D2及該第四二極體D4的連接處以測得供予該一次側11的電流。當然在實際實施上,亦可選擇連接至其他位置來達到同樣之目的。該脈衝寬度調變電路22一端與該輸出端213電性連接,另一端電性連接至該電子開關SW,用以接收該輸出端213輸出之訊號,並依據該輸出端213輸出之訊號產生對應之脈衝寬度調變訊號予該電子開關SW,以控制該電子開關導通或阻斷。 The control module 20 is electrically connected to the electronic switch SW for controlling the electronic switch SW to be turned on or off. In this embodiment, the control The module 20 includes a feedback control circuit 21 and a pulse width modulation (PWM) circuit 22, wherein the feedback control circuit 21 has a voltage detection terminal 211, a current detection terminal 212, and an output. The voltage detecting end 211 and the current detecting end 212 are electrically connected to the primary side 11 of the transformer 10 to detect the voltage and current at the primary side 11 of the transformer 10, so that the output end 213 outputs correspondingly. Signal. The voltage detecting end 211 in this embodiment is connected to the AC power source 100 to measure the voltage supplied to the primary side 11, and the current detecting end 212 is connected to the electronic switch SW and the second diode. The junction of D2 and the fourth diode D4 is used to measure the current supplied to the primary side 11. Of course, in actual implementation, you can also choose to connect to other locations to achieve the same purpose. One end of the pulse width modulation circuit 22 is electrically connected to the output end 213, and the other end is electrically connected to the electronic switch SW for receiving the signal output by the output end 213, and generating a signal according to the output end 213. Corresponding pulse width modulation signal is applied to the electronic switch SW to control the electronic switch to be turned on or off.
於本實施例中,輸入電壓、輸出電壓、該電子開關SW之切換頻率以及該負載200之規格如下表所示:
藉此,透過上述結構設計與規格,在利用下述方法,便可達到功因校正與變壓之目的,而該方法包含有下列步驟: Therefore, through the above structural design and specifications, the following methods can be used to achieve the purpose of power factor correction and voltage transformation, and the method includes the following steps:
A.請參閱圖3與圖4,導通該電子開關SW一 第一預定時間,使該交流電源100之電能於正半波時,該交流電源100之電能通過該第一二極體D1、該第一線圈N1、該電子開關SW與該第四二極體D4,而透過該變壓器10將電能由該二次側12輸出至該負載200(如圖3)。而該交流電源100之電能於負半波時,該交流電源100之電能則通過該第三二極體D3、該第二線圈N2、該電子開關SW與該第二二極體D2,而透過該變壓器10將電能由該二次側12輸出至該負載200(如圖4)。 A. Please refer to FIG. 3 and FIG. 4, and turn on the electronic switch SW. The first predetermined time, when the electric energy of the alternating current power source 100 is in the positive half wave, the electric energy of the alternating current power source 100 passes through the first diode D1, the first coil N1, the electronic switch SW and the fourth diode D4, and electrical energy is output from the secondary side 12 to the load 200 through the transformer 10 (Fig. 3). When the power of the AC power source 100 is in a negative half wave, the power of the AC power source 100 passes through the third diode D3, the second coil N2, the electronic switch SW, and the second diode D2. The transformer 10 outputs electrical energy from the secondary side 12 to the load 200 (Fig. 4).
B.阻斷該電子開關SW一第二預定時間,使該交流電源100與該一次側11之間呈現斷路,而使該變壓器10之二次側12停止輸出電能予該負載200。 B. Blocking the electronic switch SW for a second predetermined time, causing an open circuit between the AC power source 100 and the primary side 11, and causing the secondary side 12 of the transformer 10 to stop outputting electrical energy to the load 200.
另外,每執行一次步驟A至步驟B後,則表示完成一次週期之作動。是以,在該交交流變壓裝置持續作動之情況下,於步驟B後,便繼續重複執行步驟A至步驟B,直至該交交流變壓裝置停止作動。 In addition, after each step A to step B is performed, it indicates that the operation of one cycle is completed. Therefore, in the case where the AC alternating voltage changing device is continuously operated, after step B, the steps A to B are continuously repeated until the AC alternating voltage changing device stops operating.
藉此,透過上述之設計,便可透過調整該第一預定時間與該第二預定時間之長短,達到改變輸出予負載200的電壓大小以及提升功率因數之目的。另外,由於整體電路不須使用電容器,且只須要透過該電子開關SW進行即可控制,不僅具有使用壽命長且控制簡單之優點,更不會有習用變壓裝置容易產生電路短路的疑慮。 Thereby, through the above design, the purpose of changing the voltage output to the load 200 and improving the power factor can be achieved by adjusting the length of the first predetermined time and the second predetermined time. In addition, since the overall circuit does not need to use a capacitor, and only needs to be controlled by the electronic switch SW, it has the advantages of long service life and simple control, and there is no doubt that the conventional transformer device is prone to short circuit.
除此之外,該控制模組20之迴授控制電路21亦可如圖5般,將其電壓偵測端211與電流偵測端212電性連接至該變壓器10二次側12處,以偵測該變壓器10二次側12處之電壓與電流,而可更徑確地控制該脈衝寬度調變電路22輸出對應之脈衝寬度調變訊號以導通或阻斷該電子開關SW達到相同之目的。 In addition, the feedback control circuit 21 of the control module 20 can also electrically connect the voltage detecting end 211 and the current detecting end 212 to the secondary side 12 of the transformer 10, as shown in FIG. Detecting the voltage and current at the secondary side 12 of the transformer 10, and more accurately controlling the pulse width modulation circuit 22 to output a corresponding pulse width modulation signal to turn on or block the electronic switch SW to achieve the same purpose.
另外,除上述以該脈衝寬度調變電路22做為 該電子開關SW導通或阻斷之控制外,請參閱圖6與圖7,當該變壓器10之一次側11更設有一第三線圈N3時,亦可透過該第三線圈N3設計震盪線圈變換器(Ringing Choke Converter,RCC)電路23替換前述之脈衝寬度調變電路21以達到控制該電子開關SW導通或阻斷之目的,且此架構下,該迴授控制電路22同樣可依需求電性連接至該一次側11處(如圖6)或是二次側12處(如圖7)進行電壓與電流之量測以達到前述實施例之目的。 In addition, the pulse width modulation circuit 22 is used as the In addition to the control of the electronic switch SW being turned on or off, please refer to FIG. 6 and FIG. 7. When the primary side 11 of the transformer 10 is further provided with a third coil N3, the oscillating coil converter can also be designed through the third coil N3. The Ringing Choke Converter (RCC) circuit 23 replaces the pulse width modulation circuit 21 described above to achieve the purpose of controlling the conduction or blocking of the electronic switch SW. In this architecture, the feedback control circuit 22 can also be electrically connected according to requirements. Connect to the primary side 11 (as in Figure 6) or the secondary side 12 (as in Figure 7) for voltage and current measurements to achieve the objectives of the foregoing embodiments.
再者,以上所述僅為本發明較佳可行實施例而已,且在電氣特性以及電路動作原理相同之情況下,前述各電路元件之設置位置以及數量、以及舉凡應用本發明說明書及申請專利範圍所為之等效電路變化,理應包含在本發明之專利範圍內。 Furthermore, the above description is only a preferred embodiment of the present invention, and in the case where the electrical characteristics and the circuit operation principle are the same, the position and the number of the foregoing circuit components are set, and the specification and the patent application scope of the present invention are applied. The equivalent circuit variations are intended to be included in the scope of the present invention.
D1~D4‧‧‧二極體 D1~D4‧‧‧ Diode
SW‧‧‧電子開關 SW‧‧‧Electronic switch
10‧‧‧變壓器 10‧‧‧Transformers
11‧‧‧一次側 11‧‧‧First side
N1‧‧‧第一線圈 N1‧‧‧ first coil
N2‧‧‧第二線圈 N2‧‧‧second coil
12‧‧‧二次側 12‧‧‧second side
20‧‧‧控制模組 20‧‧‧Control Module
21‧‧‧迴授控制電路 21‧‧‧Feedback control circuit
211‧‧‧電壓偵測端 211‧‧‧voltage detection terminal
212‧‧‧電流偵測端 212‧‧‧current detection terminal
213‧‧‧輸出端 213‧‧‧ Output
22‧‧‧脈衝寬度調變電路 22‧‧‧ pulse width modulation circuit
100‧‧‧交流電源 100‧‧‧AC power supply
110‧‧‧第一端 110‧‧‧ first end
120‧‧‧第二端 120‧‧‧second end
200‧‧‧負載 200‧‧‧load
Claims (8)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
TW102139822A TWI504123B (en) | 2013-11-01 | 2013-11-01 | Flow Transformer Transformer and Its Transforming Method |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
TW102139822A TWI504123B (en) | 2013-11-01 | 2013-11-01 | Flow Transformer Transformer and Its Transforming Method |
Publications (2)
Publication Number | Publication Date |
---|---|
TW201519565A true TW201519565A (en) | 2015-05-16 |
TWI504123B TWI504123B (en) | 2015-10-11 |
Family
ID=53721090
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
TW102139822A TWI504123B (en) | 2013-11-01 | 2013-11-01 | Flow Transformer Transformer and Its Transforming Method |
Country Status (1)
Country | Link |
---|---|
TW (1) | TWI504123B (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN107708246A (en) * | 2016-08-09 | 2018-02-16 | 东林科技股份有限公司 | LED drive and its driving method |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3898410A (en) * | 1972-06-16 | 1975-08-05 | Environment One Corp | AC to RF converter circuit for induction cooking unit |
JP3341832B2 (en) * | 1999-12-27 | 2002-11-05 | 日本電気株式会社 | Power supply circuit and smoothing method |
JP3304944B2 (en) * | 2000-02-07 | 2002-07-22 | 株式会社ニプロン | Uninterruptible switching regulator |
TWI599265B (en) * | 2011-11-15 | 2017-09-11 | Hep Tech Co Ltd | Light supply module |
CN103337968B (en) * | 2013-07-25 | 2016-05-04 | 重庆大学 | Single-stage high-frequency AC/AC converter |
TWM476417U (en) * | 2013-11-01 | 2014-04-11 | Hep Tech Co Ltd | AC-AC transformer device |
-
2013
- 2013-11-01 TW TW102139822A patent/TWI504123B/en not_active IP Right Cessation
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN107708246A (en) * | 2016-08-09 | 2018-02-16 | 东林科技股份有限公司 | LED drive and its driving method |
Also Published As
Publication number | Publication date |
---|---|
TWI504123B (en) | 2015-10-11 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
TWI646761B (en) | Converter and control method thereof | |
TWI619342B (en) | Converter and control method thereof | |
JP2015139358A5 (en) | ||
TW201601436A (en) | DC voltage converter and clamp circuit | |
KR101654490B1 (en) | Converter and bi-directional converter | |
TWI521850B (en) | Power converting device | |
WO2015072009A1 (en) | Bidirectional converter | |
JP5919750B2 (en) | Power supply | |
TWI504123B (en) | Flow Transformer Transformer and Its Transforming Method | |
JP5535290B2 (en) | Bidirectional converter | |
TWI608694B (en) | Static magnetoresistive magnetic amplifying device | |
TWI521849B (en) | High Power Factor Isolated Power Supply | |
JP5992820B2 (en) | Converter and bidirectional converter | |
TWI568163B (en) | Isolated converter and isolated converter? control method | |
WO2015070515A1 (en) | Power conversion device and conversion method thereof | |
WO2015078094A1 (en) | Ac-ac voltage transformation device and voltage transformation method thereof | |
JP6347389B2 (en) | Non-contact power feeding device, non-contact power receiving device, and non-contact power feeding system | |
TWM477732U (en) | Quadrature alternating current power conversion device | |
JP6088869B2 (en) | DC-DC converter | |
CN203813673U (en) | AC-AC voltage transformation device | |
JP5765075B2 (en) | Power conversion device and charging device | |
TWI543508B (en) | Dc voltage converter | |
TWI577123B (en) | Isolated multi-level dc-dc converter and method thereof | |
TWI504116B (en) | Power conversion device and conversion method thereof | |
JP2016082715A (en) | Series resonant power transfer apparatus |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
MM4A | Annulment or lapse of patent due to non-payment of fees |