CN106130372B - AC variable step-up power supply - Google Patents
AC variable step-up power supply Download PDFInfo
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- CN106130372B CN106130372B CN201610574160.6A CN201610574160A CN106130372B CN 106130372 B CN106130372 B CN 106130372B CN 201610574160 A CN201610574160 A CN 201610574160A CN 106130372 B CN106130372 B CN 106130372B
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M7/00—Conversion of AC power input into DC power output; Conversion of DC power input into AC power output
- H02M7/02—Conversion of AC power input into DC power output without possibility of reversal
- H02M7/04—Conversion of AC power input into DC power output without possibility of reversal by static converters
- H02M7/12—Conversion of AC power input into DC power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
- H02M7/145—Conversion of AC power input into DC power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a thyratron or thyristor type requiring extinguishing means
- H02M7/155—Conversion of AC power input into DC power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a thyratron or thyristor type requiring extinguishing means using semiconductor devices only
- H02M7/19—Conversion of AC power input into DC power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a thyratron or thyristor type requiring extinguishing means using semiconductor devices only arranged for operation in series, e.g. for voltage multiplication
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Abstract
Description
技术领域technical field
本发明涉及一种无变升压电路，具体为一种交流电无变升压电源。The invention relates to a non-variable boost circuit, in particular to an AC non-variable boost power supply.
背景技术Background technique
在电子电路应用中，如果想把低压交流电，变成此低压交流电电压几倍的直流电，通常使用的方法就是利用升压变压器升压，然后再用二极管整流得到所需要的高压直流电。这种电压变换方法简单实用，但它体积大比较笨重，电能损耗大利用率低，而且变压器本身就有电磁干扰，会对电路产生一定的影响。In electronic circuit applications, if you want to convert low-voltage alternating current into direct current several times the voltage of the low-voltage alternating current, the usual method is to use a step-up transformer to boost the voltage, and then rectify it with a diode to obtain the required high-voltage direct current. This voltage conversion method is simple and practical, but it is bulky and cumbersome, the power loss is large and the utilization rate is low, and the transformer itself has electromagnetic interference, which will have a certain impact on the circuit.
发明内容Contents of the invention
本发明解决了现有技术的不足，提供了一种电路结构简单、体积小重量轻、干扰且电能转换利用率高的交流电无变升压电源。The invention solves the deficiencies of the prior art, and provides an AC non-variable step-up power supply with simple circuit structure, small volume, light weight, interference and high utilization rate of electric energy conversion.
为了达到上述目的，本发明所采用的技术方案是：In order to achieve the above object, the technical scheme adopted in the present invention is:
一种交流电无变升压电源，包括低压交流电输入端P1、二极管D1、D2、D3、D4、D5、D6、D7、光耦U1、U2、U3、电容C1、C2、C3、C4、电阻R1、直流电输出端P2，所述二极管D1的正极与交流电输入端P1的一端连接，二极管D1的负极分别与光耦U1的输出端的集电极、电容C1的一端连接，光耦U1的输出端的发射极与直流电输出端P2的一端连接，光耦U1的输入端的一端与低压交流电输入端P1的一端连接，光耦U1的输入端的另一端与电阻R1的一端连接，所述二极管D3的正极与交流电输入端P1的一端连接，二极管D3的负极分别与光耦U2的输出端的集电极、电容C2的一端连接，光耦U2的输出端的发射极与电容C1的另一端连接，光耦U2的输入端的一端与低压交流电输入端P1的一端连接，光耦U2的输入端的另一端与电阻R1的一端连接，所述二极管D5的正极与交流电输入端P1的一端连接，二极管D5的负极分别与光耦U3的输出端的集电极、电容C3的一端连接，光耦U3的输出端的发射极与电容C2的另一端连接，光耦U3的输入端的一端与低压交流电输入端P1的一端连接，光耦U3的输入端的另一端与电阻R1的一端连接，二极管D2的正极与电容C1的另一端连接，二极管D4的正极与电容C2另一端连接，二极管D6的正极分别与电容C3的另一端、直流电输出端P2的另一端连接，二极管D2的负极、二极管D4的负极及二极管D6的负极分别与低压交流电输入端P1的另一端连接，电容C4连接在直流电输出端P2之间，二极管D7的正极与低压交流输入端P1的另一端连接，二极管D7的负极与电阻R1的另一端连接。An AC non-variable step-up power supply, including a low-voltage AC input terminal P1, diodes D1, D2, D3, D4, D5, D6, D7, optocouplers U1, U2, U3, capacitors C1, C2, C3, C4, and a resistor R1 , DC output terminal P2, the anode of the diode D1 is connected to one end of the AC input terminal P1, the negative pole of the diode D1 is respectively connected to the collector of the output terminal of the optocoupler U1, and one end of the capacitor C1, and the emitter of the output terminal of the optocoupler U1 One end of the input end of the optocoupler U1 is connected to one end of the low-voltage AC input end P1, the other end of the input end of the optocoupler U1 is connected to one end of the resistor R1, and the anode of the diode D3 is connected to the input end of the AC power One end of the terminal P1 is connected, the cathode of the diode D3 is respectively connected to the collector of the output end of the optocoupler U2, and one end of the capacitor C2, the emitter of the output end of the optocoupler U2 is connected to the other end of the capacitor C1, and one end of the input end of the optocoupler U2 It is connected to one end of the low-voltage AC input terminal P1, the other end of the input terminal of the optocoupler U2 is connected to one end of the resistor R1, the anode of the diode D5 is connected to one end of the AC input terminal P1, and the cathode of the diode D5 is respectively connected to the optocoupler U3. The collector of the output end is connected to one end of the capacitor C3, the emitter of the output end of the optocoupler U3 is connected to the other end of the capacitor C2, one end of the input end of the optocoupler U3 is connected to one end of the low-voltage AC input end P1, and the input end of the optocoupler U3 The other end is connected to one end of the resistor R1, the anode of the diode D2 is connected to the other end of the capacitor C1, the anode of the diode D4 is connected to the other end of the capacitor C2, the anode of the diode D6 is respectively connected to the other end of the capacitor C3 and the other end of the DC output terminal P2 One end is connected, the cathode of diode D2, the cathode of diode D4 and the cathode of diode D6 are respectively connected to the other end of the low-voltage AC input terminal P1, the capacitor C4 is connected between the DC output terminals P2, and the anode of the diode D7 is connected to the low-voltage AC input terminal P1 The other end of the diode D7 is connected to the other end of the resistor R1.
本发明通过几个参数相同的电容器，在输入交流电的正半周时，低压交流电对电容器进行并联充电，在输入交流电的负半周时，电容器串联对负载放电，从而达到交流电无变升压的目的。本发明电路结构简单、体积小重量轻、干扰且电能转换利用率高，节约了低压交流电升压的成本。The invention uses several capacitors with the same parameters. When the positive half cycle of the input alternating current is used, the low-voltage alternating current charges the capacitors in parallel, and when the negative half cycle of the input alternating current is used, the capacitors are connected in series to discharge the load, thereby achieving the purpose of stepping up the alternating current without change. The invention has the advantages of simple circuit structure, small size, light weight, interference and high utilization rate of electric energy conversion, and saves the cost of boosting low-voltage alternating current.
附图说明Description of drawings
图1为本发明的电路原理图。Fig. 1 is the schematic circuit diagram of the present invention.
具体实施方式Detailed ways
下面结合附图对本发明作进一步描述：The present invention will be further described below in conjunction with accompanying drawing:
如图1所示，一种交流电无变升压电源，包括低压交流电输入端P1、二极管D1、D2、D3、D4、D5、D6、D7、光耦U1、U2、U3、电容C1、C2、C3、C4、电阻R1、直流电输出端P2，所述二极管D1的正极与交流电输入端P1的一端连接，二极管D1的负极分别与光耦U1的输出端的集电极、电容C1的一端连接，光耦U1的输出端的发射极与直流电输出端P2的一端连接，光耦U1的输入端的一端与低压交流电输入端P1的一端连接，光耦U1的输入端的另一端与电阻R1的一端连接，所述二极管D3的正极与交流电输入端P1的一端连接，二极管D3的负极分别与光耦U2的输出端的集电极、电容C2的一端连接，光耦U2的输出端的发射极与电容C1的另一端连接，光耦U2的输入端的一端与低压交流电输入端P1的一端连接，光耦U2的输入端的另一端与电阻R1的一端连接，所述二极管D5的正极与交流电输入端P1的一端连接，二极管D5的负极分别与光耦U3的输出端的集电极、电容C3的一端连接，光耦U3的输出端的发射极与电容C2的另一端连接，光耦U3的输入端的一端与低压交流电输入端P1的一端连接，光耦U3的输入端的另一端与电阻R1的一端连接，二极管D2的正极与电容C1的另一端连接，二极管D4的正极与电容C2另一端连接，二极管D6的正极分别与电容C3的另一端、直流电输出端P2的另一端连接，二极管D2的负极、二极管D4的负极及二极管D6的负极分别与低压交流电输入端P1的另一端连接，电容C4连接在直流电输出端P2之间，二极管D7的正极与低压交流输入端P1的另一端连接，二极管D7的负极与电阻R1的另一端连接。As shown in Figure 1, an AC non-variable step-up power supply includes a low-voltage AC input terminal P1, diodes D1, D2, D3, D4, D5, D6, D7, optocouplers U1, U2, U3, capacitors C1, C2, C3, C4, resistor R1, DC output terminal P2, the anode of the diode D1 is connected to one end of the AC input terminal P1, the cathode of the diode D1 is respectively connected to the collector of the output terminal of the optocoupler U1, and one end of the capacitor C1. The emitter of the output terminal of U1 is connected to one end of the DC output terminal P2, one end of the input terminal of the optocoupler U1 is connected to one end of the low-voltage AC input terminal P1, the other end of the input terminal of the optocoupler U1 is connected to one end of the resistor R1, and the diode The positive pole of D3 is connected to one end of the AC input terminal P1, the negative pole of the diode D3 is connected to the collector of the output terminal of the optocoupler U2 and one end of the capacitor C2, and the emitter of the output terminal of the optocoupler U2 is connected to the other end of the capacitor C1. One end of the input end of the coupler U2 is connected to one end of the low-voltage AC input end P1, the other end of the input end of the optocoupler U2 is connected to one end of the resistor R1, the anode of the diode D5 is connected to one end of the AC input end P1, and the cathode of the diode D5 Connect to the collector of the output end of the optocoupler U3 and one end of the capacitor C3 respectively, the emitter of the output end of the optocoupler U3 is connected to the other end of the capacitor C2, one end of the input end of the optocoupler U3 is connected to one end of the low-voltage AC input end P1, The other end of the input end of the optocoupler U3 is connected to one end of the resistor R1, the anode of the diode D2 is connected to the other end of the capacitor C1, the anode of the diode D4 is connected to the other end of the capacitor C2, and the anode of the diode D6 is respectively connected to the other end of the capacitor C3, The other end of the DC output terminal P2 is connected, the cathode of the diode D2, the cathode of the diode D4 and the cathode of the diode D6 are respectively connected to the other end of the low-voltage AC input terminal P1, the capacitor C4 is connected between the DC output terminals P2, and the anode of the diode D7 It is connected with the other end of the low-voltage AC input terminal P1, and the cathode of the diode D7 is connected with the other end of the resistor R1.
如图1所示，本发明的工作原理如下：As shown in Figure 1, the working principle of the present invention is as follows:
低压交流电输入端P1，交流电分为正半周和负半周。当输入的低压交流电为正半周时，低压交流电对电容C1、C2、C3进行并联充电。三条充电途径为，①P1的上端开始→D1→C1→D2→P1的下端，②P1的上端开始→D3→C2→D4→P1的下端，③P1的上端开始→D5→C3→D6→P1的下端。此时二极管D7反向截止不会导通。当输入的低压交流电为负半周时，二极管D1至D6都反向截止不会导通。二极管D7开始导通，电流途径为，P1的下端→D7→R1→U1、U2、U3的触发输入端→P1的上端。此时光耦U1、U2、U3的输出端，在交流电负半周的触发下开始导通。U1、U2、U3的输出端导通后，构成了C1、C2、C3的串联放电回路。电容C1、C2、C3的放电途径为，从C4的负极开始→C3→U3的输出端→C2→U2的输出端→C1→U1的输出端→C4的正极。这样在交流电负半周时，C1、C2、C3上充得的电串联后对电容C4进行放电，并由P2输出直流电。Low-voltage alternating current input terminal P1, alternating current is divided into positive half cycle and negative half cycle. When the input low-voltage alternating current is a positive half cycle, the low-voltage alternating current charges the capacitors C1, C2, and C3 in parallel. The three charging paths are: ①Start from the upper end of P1→D1→C1→D2→lower end of P1, ②start from the upper end of P1→D3→C2→D4→lower end of P1, ③start from the upper end of P1→D5→C3→D6→lower end of P1. At this time, the reverse cut-off of the diode D7 will not be conducted. When the input low-voltage alternating current is a negative half cycle, the diodes D1 to D6 are reverse cut off and will not conduct. The diode D7 starts to conduct, and the current path is: the lower end of P1 → D7 → R1 → trigger input terminals of U1, U2, U3 → the upper end of P1. At this time, the output terminals of the optocouplers U1, U2, and U3 start to conduct under the trigger of the negative half cycle of the alternating current. After the output ends of U1, U2, and U3 are turned on, a series discharge circuit of C1, C2, and C3 is formed. The discharge path of capacitors C1, C2, and C3 is, starting from the negative pole of C4 → C3 → the output terminal of U3 → C2 → the output terminal of U2 → C1 → the output terminal of U1 → the positive pole of C4. In this way, during the negative half cycle of the alternating current, the electricity charged on C1, C2, and C3 is connected in series to discharge the capacitor C4, and the direct current is output by P2.
综上所述，本发明交流电无变升压电源的应用原理为，在输入低压交流电为正半周时，此正半周电压对C1、C2、C3进行并联充电，在C1、C2、C3上充得的电压值约等于低压直流电的电压值；在输入低压直流电为负半周时，C1、C2、C3串联后对电容C4进行充电，在C4上充得的电压值约等于低压直流电电压的3倍，由P2输出，实现了交流电无变升压的目的。In summary, the application principle of the AC non-variable step-up power supply of the present invention is that when the input low-voltage alternating current is a positive half cycle, the positive half cycle voltage charges C1, C2, and C3 in parallel, and the charge on C1, C2, and C3 is The voltage value of the capacitor is approximately equal to the voltage value of the low-voltage direct current; when the input low-voltage direct current is a negative half cycle, C1, C2, and C3 are connected in series to charge the capacitor C4, and the voltage value charged on C4 is approximately equal to three times the voltage of the low-voltage direct current. The output from P2 realizes the purpose of stepping up the alternating current without change.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610574160.6A CN106130372B (en) | 2016-07-21 | 2016-07-21 | AC variable step-up power supply |
| CN201810693427.2A CN108809125A (en) | 2016-07-21 | 2016-07-21 | Alternating current is without the method for becoming boosting |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1409472A (en) * | 2001-09-26 | 2003-04-09 | 三洋电机株式会社 | DC-DC converter |
| CN101645657A (en) * | 2008-09-14 | 2010-02-10 | 李书灿 | Electrical isolation rectification DC power supply |
| CN102684243A (en) * | 2011-03-18 | 2012-09-19 | 祥业科技股份有限公司 | Integrated battery charger |
| CN102843047A (en) * | 2012-08-10 | 2012-12-26 | 河南科技大学 | Transformer with microprocessor to control series-parallel connection conversion of a capacitor |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI298970B (en) * | 2004-07-29 | 2008-07-11 | Sanyo Electric Co | Voltage reduction type dc-dc converter |
| CN103354426B (en) * | 2013-03-22 | 2016-11-23 | 杭州鸿德照明科技有限公司 | AC-DC changes insulating power supply circuit |
| CN103856085A (en) * | 2014-03-24 | 2014-06-11 | 卫斌鹏 | Changeless voltage-reducing rectification converter |
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1409472A (en) * | 2001-09-26 | 2003-04-09 | 三洋电机株式会社 | DC-DC converter |
| CN101645657A (en) * | 2008-09-14 | 2010-02-10 | 李书灿 | Electrical isolation rectification DC power supply |
| CN102684243A (en) * | 2011-03-18 | 2012-09-19 | 祥业科技股份有限公司 | Integrated battery charger |
| CN102843047A (en) * | 2012-08-10 | 2012-12-26 | 河南科技大学 | Transformer with microprocessor to control series-parallel connection conversion of a capacitor |
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| CN108809125A (en) | 2018-11-13 |
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