CN104135059A - Portable multifunctional alternating current power source - Google Patents
Portable multifunctional alternating current power source Download PDFInfo
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- CN104135059A CN104135059A CN201410419756.XA CN201410419756A CN104135059A CN 104135059 A CN104135059 A CN 104135059A CN 201410419756 A CN201410419756 A CN 201410419756A CN 104135059 A CN104135059 A CN 104135059A
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Abstract
The invention relates to a portable multifunctional alternating current power source. The portable multifunctional alternating current power source comprises a storage battery, a direct current input filter circuit, a preceding stage inverter circuit, a high-frequency transformer, a rectification filter circuit, a back stage inverter circuit and an alternating current output filter circuit, all of which are connected in sequence. A current and voltage detecting circuit detects and feeds the current output current and the current output voltage back to a DSP chip, the DSP chip is connected with the preceding stage inverter circuit through a preceding stage inversion drive circuit and controls the preceding stage inverter circuit to carry out inversion, and the DSP chip is connected with the back stage inverter circuit through a back stage inversion drive circuit. The DSP chip controls the back stage inverter circuit to provide 57.7-volt single phase alternating current voltage, 100-volt single phase alternating current voltage and 220-volt single phase alternating current voltage. The portable multifunctional alternating current power source is convenient to carry, low in cost and stable and reliable in running.
Description
Technical field
The present invention relates to a kind of portable power source, be specially a kind of portable multi-function AC power.
Background technology
At present in electric power system, once the system failure when repairing of electricity consumption customer requirement, have a power failure because on-the-spot, often cannot the electric power table or should use extremely inconveniently, cause being difficult to meet client's needs of clear and definite electric weight then and there.Now battery technology is very perfect, and not only convenient but also portable, the DC inverter that storage battery is provided is the alternating current supply of electrical energy table that electric pressure is suitable, can effectively solve above-mentioned contradiction, increases work efficiency.
Summary of the invention
The technical problem to be solved in the present invention is: for overcoming the problems referred to above, provide a kind of portable multi-function AC power that multiple voltage grade can be provided.
The technical solution adopted for the present invention to solve the technical problems is:
A kind of portable multi-function AC power, comprises storage battery, direct current input filter circuit, preceding-stage inversion circuit, high frequency transformer, current rectifying and wave filtering circuit, the rear class inverter circuit connecting successively and exchanges output filter circuit;
Described storage battery provides direct current input;
The low-voltage direct of described storage battery input is carried out filtering by described direct current input filter circuit;
The low-voltage direct of described direct current input filter circuit output is carried out inversion by described preceding-stage inversion circuit, obtains high-frequency ac and export to described high frequency transformer;
Described high frequency transformer boosts high-frequency ac, and output high-frequency and high-voltage exchanges to described current rectifying and wave filtering circuit;
Described current rectifying and wave filtering circuit is by after high-frequency and high-voltage AC rectification, and output high voltage direct current is given described rear class inverter circuit;
Described rear class inverter circuit carries out high voltage direct current after inversion, output high-voltage alternating;
Described interchange output filter circuit carries out the high-voltage alternating of described rear class inverter circuit output to export after filtering;
Described interchange output filter circuit is connected with current/voltage testing circuit, described current/voltage testing circuit connects with a dsp chip, described current/voltage testing circuit detects current output current and output voltage, and feed back to described dsp chip, described dsp chip is also connected with described preceding-stage inversion circuit by preceding-stage inversion drive circuit, control described preceding-stage inversion circuit and carry out inversion, described dsp chip is connected with described rear class inverter circuit by rear class inverse changing driving circuit, modulates the high-voltage alternating that makes its output multiple voltage grade by SPWM.
Preferably, described dsp chip is also connected with under-voltage protecting circuit.
Preferably, described dsp chip is also connected with overload protecting circuit.
Preferably, described dsp chip is also connected with thermal-shutdown circuit.
Preferably, described dsp chip is also connected with short-circuit protection circuit.
Preferably, the output of described storage battery is all connected with fuse with the described output that exchanges output filter circuit.
Preferably, described dsp chip is also connected with display, keyboard and temperature-controlled fan.
The invention has the beneficial effects as follows: the present invention is simple in structure, in this programme, plan adopts prime full-bridge high-frequency to boost, and the SPWM control technology of application based on dsp chip be the alternating current of required voltage grade by the DC inverter after boosting, the present invention can provide the single phase alternating current (A.C.) voltage of 57.7V, 100V, tri-kinds of grades of 220V by rear class inverter circuit described in dsp chip control.The present invention arranges temperature-controlled fan and realizes the intelligence adjusting to power case internal temperature, further improves system reliability of operation.Voltage digital shows employing liquid crystal display; the running status of understanding system directly perceived; adopt high frequency transformer; therefore make power volume reduce; weight saving; alleviate staff's physical load thereby be easy to carry, be also provided with under-voltage protecting circuit, overload protecting circuit, thermal-shutdown circuit and short-circuit protection circuit, the safety and stability of raising system operation.
Brief description of the drawings
Below in conjunction with drawings and Examples, the present invention is further described.
Fig. 1 is the structural representation of one embodiment of the invention;
Fig. 2 is the structural representation of one embodiment of the invention;
Fig. 3 is the circuit structure diagram of one embodiment of the invention;
Fig. 4 A and Fig. 4 B are the circuit diagrams of the testing circuit of current/voltage described in the present invention;
Fig. 5 A, Fig. 5 B, Fig. 5 C and Fig. 5 D are the circuit diagrams of the drive circuit of preceding-stage inversion described in the present invention;
Fig. 6 A, Fig. 6 B, Fig. 6 C and Fig. 6 D are the circuit diagrams of the inverse changing driving circuit of rear class described in the present invention;
Fig. 7 is the circuit diagram of under-voltage protecting circuit described in the present invention;
Fig. 8 is the circuit diagram of overload protecting circuit described in the present invention and short-circuit protection circuit;
Fig. 9 is the circuit diagram of thermal-shutdown circuit described in the present invention.
Embodiment
In conjunction with the accompanying drawings, the present invention is further detailed explanation.These accompanying drawings are the schematic diagram of simplification, and basic structure of the present invention is only described in a schematic way, and therefore it only shows the formation relevant with the present invention.
Of the present invention a kind of portable multi-function AC power as shown in Figure 1, comprise storage battery, direct current input filter circuit, preceding-stage inversion circuit, high frequency transformer, current rectifying and wave filtering circuit, the rear class inverter circuit connecting successively and exchange output filter circuit, what in the present embodiment, described storage battery employing was conventional can provide the galvanic storage battery of 36V;
Described storage battery provides the direct current input of 36V;
Described direct current input filter circuit is in the present embodiment for being connected in parallel on the capacitor C 1 of described storage battery both sides, and as shown in Figure 3, its 36V low-voltage direct by described storage battery input carries out filtering;
In the present embodiment, described preceding-stage inversion circuit is selected multiple MOSFET pipes, as shown in Figure 3, comprise MOSFET1, MOSFET2, MOSFET3, MOSFET4, D1, D2, D3 and D4, its 36V low-voltage direct by the output of described direct current input filter circuit carries out inversion, obtains high-frequency ac and outputs to the primary side of described high frequency transformer;
Described high frequency transformer boosts high-frequency ac, output high-frequency and high-voltage exchanges to described current rectifying and wave filtering circuit, owing to adopting high-frequency inverter, therefore can greatly reduce the volume and weight of filter inductance and electric capacity, therefore make power volume reduce, weight saving, alleviates staff's physical load thereby be easy to carry;
Described current rectifying and wave filtering circuit is by after high-frequency and high-voltage AC rectification, and output high voltage direct current is given described rear class inverter circuit, and in the present embodiment, described current rectifying and wave filtering circuit comprises diode VD1, VD2, VD3, VD4 and capacitor C 2, and described capacitor C 2 is for eliminating clutter;
Described rear class inverter circuit carries out high voltage direct current after inversion, output high-voltage alternating, in the present embodiment, described rear class inverter circuit adopts insulated gate bipolar transistor IGBT (Insulated Gate Bipolar Transistor), comprise IGBT1, IGBT2, IGBT3, IGBT4, D5, D6, D7 and D8, as shown in Figure 3, its pulsating voltage is modulated by SPWM mode;
Described interchange output filter circuit carries out the high-voltage alternating of described rear class inverter circuit output to export after filtering, and in the present embodiment, as shown in Figure 3, described interchange output filter circuit is LC filter circuit, comprises inductance L and capacitor C 3;
Described interchange output filter circuit is connected with current/voltage testing circuit, in the present embodiment, described current/voltage testing circuit comprises current detection circuit and voltage detecting circuit, and respectively as shown in Figure 4 A and 4 B shown in FIG., described current detection circuit comprises current transformer 21CE-5A type, 4 operational amplifier LM224D, resistance R 4, resistance R 5, resistance R 6, resistance R 7, resistance R 8, resistance R 9, resistance R 10, resistance R 11, resistance R 12, diode D9, diode D10, capacitor C 4, capacitor C 5, described voltage detecting circuit comprises current transformer ZMPT101B type, 4 operational amplifier LM224D, resistance R 13, resistance R 14, resistance R 15, resistance R 16, resistance R 17, resistance R 18, resistance R 19, resistance R 20, resistance R 21, resistance R 22, diode D11, diode D12, capacitor C 6 and capacitor C 7, described current detection circuit is all connected with dsp chip with voltage detecting circuit, described current/voltage testing circuit detects current output current and output voltage, and feed back to described dsp chip, in the present embodiment, 32 TMS320F28035 microcontrollers that described dsp chip adopts American TI Company to produce, its control performance excellence, and cheap, therefore very applicable, described dsp chip is also connected with described preceding-stage inversion circuit by preceding-stage inversion drive circuit, described preceding-stage inversion drive circuit respectively with MOSFET1, MOSFET2, MOSFET3, MOSFET4 connects, and in the present embodiment, Fig. 5 A is the MOSFET1 preceding-stage inversion drive circuit being connected with MOSFET1, and it comprises power module B1515LS, optical coupler TLP250, resistance R 23, resistance R 24, resistance R 25, capacitor C 8 and capacitor C 9, Fig. 5 B is the MOSFET2 preceding-stage inversion drive circuit being connected with MOSFET2, it comprises power module B1515LS, optical coupler TLP250, resistance R 26, resistance R 27, resistance R 28, capacitor C 10 and capacitor C 11, Fig. 5 C is the MOSFET3 preceding-stage inversion drive circuit being connected with MOSFET3, it comprises power module B1515LS, optical coupler TLP250, resistance R 29, resistance R 30, resistance R 31, capacitor C 12 and capacitor C 13, Fig. 5 D is the MOSFET4 preceding-stage inversion drive circuit being connected with MOSFET4, it comprises power module B1515LS, optical coupler TLP250, resistance R 32, resistance R 33, resistance R 34, capacitor C 14 and capacitor C 15, it is controlled described preceding-stage inversion circuit and carries out inversion, as shown in Figure 3, described dsp chip sends and drives signal controlling two MOSFET pipes conducting simultaneously at diagonal angle each other, and upper and lower two the MOSFET pipe alternate conduction of the same side half-bridge, low-voltage direct is reverse into high-frequency ac and is added in the primary side of described high frequency transformer, and then boost again.Drive the duty ratio of signal by change, just can change the voltage that is added in described high frequency transformer primary side.In the time driving signal dutyfactor constant, output voltage is directly proportional to the turn ratio of high frequency transformer.For fear of upper and lower two the MOSFET pipes of the same side half-bridge in the process of the change of current, occur of short duration in conducting phenomenon and damage power device, so duty ratio can not exceed 50%.
Described dsp chip is connected with described rear class inverter circuit by rear class inverse changing driving circuit, in SPWM technology, carrier wave is triangular wave, modulating wave is sinusoidal wave, two kinds of waveforms are compared and just can be obtained the square wave that pulsewidth changes by sinusoidal rule, also be SPWM ripple, and by regulating the ratio of modulating wave amplitude and triangular wave amplitude, it is modulation ratio, just can change gained duty cycle square wave, square wave high level time has determined the service time of IGBT, so just can effectively regulate inversion gained alternating voltage effective value by changing modulation ratio, thereby provide 57.7V, 100V, the single phase alternating current (A.C.) voltage of tri-kinds of grades of 220V.Described dsp chip sends SPWM control signal through rear class inverse changing driving circuit control IGBT, the main settling signal conversion of described rear class inverse changing driving circuit and isolation features, adopt the integrated drive chips of light-coupled isolation, its respectively with IGBT1, IGBT2, the corresponding setting of IGBT3, IGBT4, be the IGBT1 rear class inverse changing driving circuit being connected with IGBT1 as shown in Figure 6A, it comprises modular power source QA01, optical coupler TLP250, resistance R 35, resistance R 36, resistance R 37, resistance R 38, capacitor C 16, capacitor C 17, capacitor C 18, capacitor C 19 and diode D12; Be the IGBT2 rear class inverse changing driving circuit being connected with IGBT2 as shown in Figure 6B, it comprises modular power source QA01, optical coupler TLP250, resistance R 39, resistance R 40, resistance R 41, resistance R 42, capacitor C 20, capacitor C 21, capacitor C 22, capacitor C 23 and diode D13; Be the IGBT3 rear class inverse changing driving circuit being connected with IGBT3 as shown in Figure 6 C, it comprises modular power source QA01, optical coupler TLP250, resistance R 43, resistance R 44, resistance R 45, resistance R 46, capacitor C 24, capacitor C 25, capacitor C 26, capacitor C 27 and diode D14; Be the IGBT4 rear class inverse changing driving circuit being connected with IGBT4 as shown in Figure 6 D, it comprises modular power source QA01, optical coupler TLP250, resistance R 47, resistance R 48, resistance R 49, resistance R 50, capacitor C 28, capacitor C 29, capacitor C 30, capacitor C 31 and diode D15.
In preferred embodiments; described dsp chip is also connected with under-voltage protecting circuit; as shown in Figure 7; it comprises resistance R 51, resistance R 52, voltage-stabiliser tube VD5, diode D16, triode Q1 and relay K 1 and switch thereof; it is in the time that brownout affects instrument work, and the switch of described relay K 1 is cut off the electricity supply.
In preferred embodiments, described dsp chip is also connected with overload protecting circuit; In preferred embodiments, described dsp chip is also connected with thermal-shutdown circuit, and as shown in Figure 9, it comprises resistance R 53, K switch 2 and capacitor C 32, realizes overheat protector by it.
In preferred embodiments; described dsp chip is also connected with short-circuit protection circuit; as shown in Figure 8; Fig. 8 is the circuit diagram of described short-circuit protection circuit and overload protecting circuit entirety; it realizes short circuit and overload protection, and figure comprises operational amplifier LM311, d type flip flop, resistance R 54, resistance R 55, resistance R 56, resistance R 57, resistance R 58, resistance R 59, diode D17, capacitor C 33 and capacitor C 34.
In preferred embodiments, the output of described storage battery is all connected with fuse with the described output that exchanges output filter circuit, improves the safety-type of entire system operation.
In preferred embodiments, as shown in Figure 2, described dsp chip is also connected with display, keyboard and temperature-controlled fan, can manipulate easily by keyboard, and by the real-time display working condition of display, and reduce working temperature by temperature-controlled fan, the reliability of work is provided.
Taking above-mentioned foundation desirable embodiment of the present invention as enlightenment, by above-mentioned description, relevant staff can, not departing from the scope of this invention technological thought, carry out various change and amendment completely.The technical scope of this invention is not limited to the content on specification, must determine its technical scope according to claim scope.
Claims (7)
1. a portable multi-function AC power, is characterized in that, comprises storage battery, direct current input filter circuit, preceding-stage inversion circuit, high frequency transformer, current rectifying and wave filtering circuit, the rear class inverter circuit connecting successively and exchanges output filter circuit;
Described storage battery provides direct current input;
The low-voltage direct of described storage battery input is carried out filtering by described direct current input filter circuit;
The low-voltage direct of described direct current input filter circuit output is carried out inversion by described preceding-stage inversion circuit, obtains high-frequency ac and export to described high frequency transformer;
Described high frequency transformer boosts high-frequency ac, and output high-frequency and high-voltage exchanges to described current rectifying and wave filtering circuit;
Described current rectifying and wave filtering circuit is by after high-frequency and high-voltage AC rectification, and output high voltage direct current is given described rear class inverter circuit;
Described rear class inverter circuit carries out high voltage direct current after inversion, output high-voltage alternating;
Described interchange output filter circuit carries out the high-voltage alternating of described rear class inverter circuit output to export after filtering;
Described interchange output filter circuit is connected with current/voltage testing circuit, described current/voltage testing circuit connects with a dsp chip, described current/voltage testing circuit detects current output current and output voltage, and feed back to described dsp chip, described dsp chip is also connected with described preceding-stage inversion circuit by preceding-stage inversion drive circuit, control described preceding-stage inversion circuit and carry out inversion, described dsp chip is connected with described rear class inverter circuit by rear class inverse changing driving circuit, modulates the high-voltage alternating that makes its output multiple voltage grade by SPWM.
2. portable multi-function AC power as claimed in claim 1, is characterized in that, described dsp chip is also connected with under-voltage protecting circuit.
3. portable multi-function AC power as claimed in claim 1 or 2, is characterized in that, described dsp chip is also connected with overload protecting circuit.
4. the portable multi-function AC power as described in claim 1-3 any one, is characterized in that, described dsp chip is also connected with thermal-shutdown circuit.
5. the portable multi-function AC power as described in claim 1-4 any one, is characterized in that, described dsp chip is also connected with short-circuit protection circuit.
6. the portable multi-function AC power as described in claim 1-5 any one, is characterized in that, the output of described storage battery is all connected with fuse with the described output that exchanges output filter circuit.
7. the portable multi-function AC power as described in claim 1-6 any one, is characterized in that, described dsp chip is also connected with display, keyboard and temperature-controlled fan.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410419756.XA CN104135059A (en) | 2014-08-24 | 2014-08-24 | Portable multifunctional alternating current power source |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410419756.XA CN104135059A (en) | 2014-08-24 | 2014-08-24 | Portable multifunctional alternating current power source |
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| CN104135059A true CN104135059A (en) | 2014-11-05 |
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| CN201410419756.XA Pending CN104135059A (en) | 2014-08-24 | 2014-08-24 | Portable multifunctional alternating current power source |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104865998A (en) * | 2014-12-10 | 2015-08-26 | 重庆希诺达通信有限公司 | Programmable control single-phase alternating current power supply device |
| CN106452151A (en) * | 2016-12-02 | 2017-02-22 | 中车青岛四方车辆研究所有限公司 | Single-phase inverter for motor train unit |
| CN106849329A (en) * | 2017-01-25 | 2017-06-13 | 青岛盛邦慧通能源科技有限公司 | A kind of electric energy meter power supply circuit |
| CN107124009A (en) * | 2017-04-27 | 2017-09-01 | 西安许继电力电子技术有限公司 | A kind of inverse type subway Way of Regenerating Energy Feedback device |
| CN109194101A (en) * | 2018-10-23 | 2019-01-11 | 西安热工研究院有限公司 | Portable multi-type high-voltage power supply |
| CN109217706A (en) * | 2018-11-01 | 2019-01-15 | 深圳市新泰胜电子科技有限公司 | A kind of Portable inverter power source |
| CN112531879A (en) * | 2020-12-05 | 2021-03-19 | 青岛鼎信通讯股份有限公司 | Acquisition terminal standby power supply device capable of being automatically switched |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07146724A (en) * | 1993-11-25 | 1995-06-06 | Sharp Corp | System interconnection type inverter |
| CN201550026U (en) * | 2009-09-03 | 2010-08-11 | 中国电子科技集团公司第十四研究所 | Special photovoltaic control inverter for solar energy |
| CN201898454U (en) * | 2010-12-20 | 2011-07-13 | 河南鸿马实业有限公司 | Vehicle-mounted power supply inverter |
| CN204156550U (en) * | 2014-08-24 | 2015-02-11 | 曲阜师范大学 | Portable multi-function AC power |
-
2014
- 2014-08-24 CN CN201410419756.XA patent/CN104135059A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07146724A (en) * | 1993-11-25 | 1995-06-06 | Sharp Corp | System interconnection type inverter |
| CN201550026U (en) * | 2009-09-03 | 2010-08-11 | 中国电子科技集团公司第十四研究所 | Special photovoltaic control inverter for solar energy |
| CN201898454U (en) * | 2010-12-20 | 2011-07-13 | 河南鸿马实业有限公司 | Vehicle-mounted power supply inverter |
| CN204156550U (en) * | 2014-08-24 | 2015-02-11 | 曲阜师范大学 | Portable multi-function AC power |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104865998A (en) * | 2014-12-10 | 2015-08-26 | 重庆希诺达通信有限公司 | Programmable control single-phase alternating current power supply device |
| CN106452151A (en) * | 2016-12-02 | 2017-02-22 | 中车青岛四方车辆研究所有限公司 | Single-phase inverter for motor train unit |
| CN106849329A (en) * | 2017-01-25 | 2017-06-13 | 青岛盛邦慧通能源科技有限公司 | A kind of electric energy meter power supply circuit |
| CN107124009A (en) * | 2017-04-27 | 2017-09-01 | 西安许继电力电子技术有限公司 | A kind of inverse type subway Way of Regenerating Energy Feedback device |
| CN109194101A (en) * | 2018-10-23 | 2019-01-11 | 西安热工研究院有限公司 | Portable multi-type high-voltage power supply |
| CN109217706A (en) * | 2018-11-01 | 2019-01-15 | 深圳市新泰胜电子科技有限公司 | A kind of Portable inverter power source |
| CN112531879A (en) * | 2020-12-05 | 2021-03-19 | 青岛鼎信通讯股份有限公司 | Acquisition terminal standby power supply device capable of being automatically switched |
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Application publication date: 20141105 |