CN2206004Y - High-performance in-line interruption electric source - Google Patents
High-performance in-line interruption electric source Download PDFInfo
- Publication number
- CN2206004Y CN2206004Y CN 94205736 CN94205736U CN2206004Y CN 2206004 Y CN2206004 Y CN 2206004Y CN 94205736 CN94205736 CN 94205736 CN 94205736 U CN94205736 U CN 94205736U CN 2206004 Y CN2206004 Y CN 2206004Y
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- output
- transformer
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Abstract
The utility model relates to a high-performance on-line uninterrupted power supply which is composed of a wave filter (1), an input power supply transformer (2), a rectifier (3), a battery charging loop (4), a storage battery (15), a variable DC power supply (5), a sine signal generator (6), a voltage amplitude controller (7), a voltage amplifier (8), a power amplifier (9), an output transformer (11), a feedback transformer (12), an attenuator (10), a current mutual inductor (13), a bypass relay (14), etc. The utility model has the advantages of low harmonic distortion of the output voltage, high dynamic and static state stability, strong adaptability to loads, etc.
Description
The utility model relates to a kind of supply unit, particularly a kind of online uninterrupted power supply of high-performance sinewave output, and being applicable to has instrument and equipment requirement or that have no progeny and still need intermittently use to the mains-supplied quality in mains-supplied.
Existing uninterrupted power supply mainly contains three classes: (1). square wave or sinewave output backup type, (2). and sinewave output is online, (3). in the emitter-base bandgap grading push-pull power amplifier mode of output voltage DC power supply.Figure (1) is square wave or sinewave output backup type circuit block diagram, its advantage is that circuit is simple, low price, the harmonic distortion of output waveform is lower, shortcoming is strict to load request, for the strict occasion of quality of power supply, the harmonic distortion of its output voltage and stability still can not meet the demands, and can not realize the continuous uninterrupted power supply to load.Figure (2) be the online circuit block diagram of sinewave output, and its advantage is the continuous uninterrupted power supply that can realize when mains-supplied is interrupted load, and output voltage is the voltage stabilization and frequency stabilization sine voltage that not influenced by Disturbance in Power Net, and shortcoming is the circuit complexity, the cost height.Figure (3) is that its advantage is that circuit is simple with the fixing circuit block diagram of the emitter-base bandgap grading push-pull power amplifier mode of DC power supply, and the harmonic wave of output voltage distortion is low, the load driving ability is strong, and load is not had strict demand, and shortcoming is that power loss is big, efficient is low, and the complete machine cost is big.
The purpose of this utility model is to overcome the deficiency in the prior art, provide a kind of sinewave output online uninterrupted power supply, the harmonic distortion of its output voltage, dynamically, index such as static stability all is improved, circuit structure is simple, and cost is low, overall efficiency is high.
Structure of the present utility model is mainly by filter (1), input power transformer (2), rectifier (3), charge in batteries loop (4), batteries (15), variable DC power supply (5), sinusoidal signal generator (6), voltage amplitude controller (7), voltage amplifier (8), power amplifier (9), output transformer (11), feedback transformer (12), attenuator (10), current transformer (13), bypass relay compositions such as (14), filter (1) is given input power transformer (2) after the various interference on the utility grid are filtered, input power transformer (2) becomes low-voltage AC with civil power, become direct current behind rectifier (3) rectifying and wave-filtering, the one tunnel charges to batteries (15) through battery charge loop (4); Another road powers to power amplifier (9) through variable DC power supply (5), voltage amplifier (8) is sent to power amplifier (9) after the output signal of sinusoidal signal generator (6) is amplified simultaneously, power to the load after boosting by output transformer (11) again, one negative-feedback circuit of being made up of feedback transformer (12) and attenuator (10) is arranged between the input of the output of output transformer (11) and voltage amplifier (8), and current transformer is connected between output transformer (11) and the voltage amplitude controller (7).
The utility model is because the variable DC power supply that has adopted the output voltage of output voltage and sinusoidal signal generator to have functional relation, with differential amplifier as input, with the power amplifier of push-pull amplifier as output, with the negative-feedback circuit of forming by feedback transformer and attenuator, thereby make the harmonic distortion of output voltage of uninterrupted power supply low, dynamically, the static stability height, strong to workload-adaptability, it is simple to have circuit structure, the reliability height, assembling easily, advantages such as the cost of material is low are a kind of desirable uninterrupted power supplys of instrument and equipment that still need continue to use to having no progeny in mains-supplied quality requirement height or the mains-supplied.
The utility model will be further described below in conjunction with drawings and Examples.
Figure (1) is square wave or sinewave output backup type circuit structure block diagram.
Figure (2) is the online circuit structure block diagram of sinewave output.
Figure (3) is for pushing off formula power amplifier mode circuit structure block diagram with the fixing emitter-base bandgap grading of DC power supply.
Figure (4) is the utility model circuit structure block diagram.
Figure (5) is variable DC power supply circuit figure of the present utility model.
Figure (6) is a voltage amplitude controller circuit diagram of the present utility model.
By accompanying drawing (4) as can be known, structure of the present utility model is made up of filter (1), input power transformer (2), rectifier (3), charge in batteries loop (4), batteries (15), variable DC power supply (5), sinusoidal signal generator (6), voltage amplitude controller (7), voltage amplifier (8), power amplifier (9), output transformer (11), feedback transformer (12), attenuator (10), current transformer (13), bypass relay (14) and temperature relay etc.Filter (1) is a low pass filter, when mains-supplied just often, it gives input power transformer (2) to the frequency from civil power after filtering is carried out in the interference more than the 50Hz, the step-down ratio of input power transformer (2) is 3, it gives rectifier (3) after with the civil power step-down, rectifier (3) is made of bridge rectifier, it becomes pulsating dc voltage to the low-voltage AC from input power transformer (2), after filter capacitor filtering, become direct voltage again, be divided into two-way then: one tunnel loop that charges a battery; Variable DC power supply is given on another road, the charge in batteries loop is common constant current charge circuit, it is at the charging initial stage, suitably reduce charging voltage, to keep constant current charge (about 1A) to batteries, reduce to about 0.8A when charging current and charging voltage to be risen to 96 volts again, variable DC power supply circuit as shown in Figure 5, the output voltage (VIN) of sinusoidal signal generator (6) carries out anti-phase amplification through U3D, U3B and U3C carry out the rectification of positive-negative half-cycle respectively to the output voltage of U3D, U3A carries out the pulsating direct current of U3B and U3C output to give U1 after homophase amplifies, U1 is the pulse width modulation controlled integrated circuit, it exports the pulse that a frequency is 20KHz, this pulse is given Q1 after photoelectrical coupler U2 isolates, amplify and Q2 through Q1, give Q7 after the Q3 buffering, Q4, the grid of three field effect transistor of Q5 makes its height along with impulse level produce switch motion, L1, C15, R16 is to carrying out filtering because of the switch motion of field effect transistor in the pulse voltage that the FP node produces since with the Voltage Feedback of FP node to U1, thereby make the FP node obtain one more level and smooth and can follow the voltage that the U3A output voltage is done synchronous variation.The PGND end points of variable DC power supply (5) connects the final stage positive supply supply side of power amplifier (9), and the V-end points connects rectifier (3) negative output terminal.Sinusoidal signal generator (6) is made up of quartz oscillator, frequency divider and band pass filter, the output voltage of quartz oscillator obtains the square-wave voltage of 50Hz behind the frequency dividing circuit frequency division, after band-pass filter, become the sine voltage of 50Hz again, the one tunnel give the control end (VIN) of variable DC power supply (5) then as control signal; The input of voltage amplitude controller (7) is given on another road.The circuit of voltage amplitude controller (7) is shown in figure (6), inverting amplifier U5A carries out the output voltage from current transformer to give two transistor Q6 after the voltage amplitude adjustment, the base stage of Q8, make Q6 when the complete machine output overloading, control thereby Q8 takes turns the output voltage amplitude of carrying out of conducting offset of sinusoidal signal generator (6).Voltage amplifier (8) is the inverting amplifier of 30dB for voltage gain, it gives power amplifier (9) after the output voltage of voltage amplitude controller (7) is amplified, power amplifier be a voltage gain be 26dB with differential amplifier as input, with the amplifier of push-pull amplifier as output, it gives output transformer (11) after the output voltage of voltage amplifier (8) is done further amplification, the step-up ratio of output transformer (11) is 4.8, and it boosts the output voltage of power amplifier (9) is that 220 volts of alternating voltages power to the load.The step-down ratio of feedback transformer (12) is 18, giving electric resistance partial pressure type attenuator (10) after the output voltage step-down of output transformer (11), by giving the input of voltage amplifier (8) after attenuator (10) decay.The step-up ratio of the mutual salty device of electric current (13) is 2200, and it is elementary to be connected in series with the complete machine output loop, and secondary output voltage is as the control voltage of voltage amplitude controller (7).The controlling temperature that rises of temperature relay is 85 ℃, and it is installed on the radiator of power amplifier (9) final stage power amplifier pipe and is serially connected in the power drives loop of bypass relay (14), to realize the overtemperature protection bypass.Relay (14) is the single-pole double throw relay, and the secondary end of its normally opened contact and output transformer (11) is connected, and common contact is connected with an end of complete machine accessory power outlet, and normally-closed contact is connected with the output of input filter (1).When mains-supplied is interrupted, the variable DC power supply (5) that the output voltage of batteries (15) by output voltage and sinusoidal signal generator has functional relation is powered to power amplifier (9), simultaneously voltage amplifier (8) is sent to power amplifier (9) after the 50Hz low-distortion sine wave voltage amplification of sinusoidal signal generator (6) output, is done by power amplifier (9) that to boost through output transformer (11) after the further amplification be that 220 volts of alternating currents power to the load again.Overload protection is by realizing with the output voltage control voltage amplitude controller (7) that is serially connected in the current transformer (13) in the complete machine output loop.
Claims (3)
1, the online uninterrupted power supply of a kind of high-performance, by filter (1), input power transformer (2), rectifier (3), charge in batteries loop (4), batteries (15), variable DC power supply (5), sinusoidal signal generator (6), voltage amplitude controller (7), voltage amplifier (8), power amplifier (9), output transformer (11), feedback transformer (12), attenuator (10), current transformer (13), compositions such as bypass relay (14) and temperature relay, it is characterized in that giving input power transformer (2) after filter (1) filters the various interference on the utility grid, input power transformer (2) becomes the low pressure unsteady flow with civil power, become direct current behind rectifier (3) rectifying and wave-filtering, the one tunnel charges to batteries (15) through charge in batteries loop (4); Another road powers to power amplifier (9) through variable DC power supply (5), voltage amplifier (8) is sent to power amplifier (9) after the output signal of sinusoidal signal generator (6) is amplified, power to the load after boosting by output transformer (11) again, a negative-feedback circuit of being made up of attenuator (10), feedback transformer (12) is arranged between the input of the output of output transformer (11) and voltage amplifier (8).Current transformer (13) is connected between output transformer (11) and the voltage amplitude controller (7).
2, the online uninterrupted power supply of high-performance as claimed in claim 1, the output that it is characterized in that (VIN) termination sinusoidal signal generator (6) of described variable DC power supply circuit (5), the output voltage of sinusoidal signal generator (6) is through the anti-phase amplification of amplifier (U3D), by (U3B) with (U3C) output voltage of (U3D) is carried out the positive-negative half-cycle rectification, output voltage after the rectification is sent into pulse-width modulation 2 control integrated circuit (U1) after (U3A) amplifies, after isolating, gives by photoelectrical coupler (U2) triode (Q1) again, again through (Q2), (Q5) send into field effect transistor (Q7) after the buffering, (Q4), (Q5), (V-) termination rectifier (3) negative output terminal of variable DC power supply (5), (FP) termination power amplifier (9) level negative supply supply side not, (PGND) termination power amplifier (9) of variable DC power supply (5) is level positive supply supply side not.
3, the online uninterrupted power supply of high-performance as claimed in claim 1, it is characterized in that described power amplifier (9) with differential amplifier as input, with push-pull amplifier as output.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 94205736 CN2206004Y (en) | 1994-03-26 | 1994-03-26 | High-performance in-line interruption electric source |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 94205736 CN2206004Y (en) | 1994-03-26 | 1994-03-26 | High-performance in-line interruption electric source |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2206004Y true CN2206004Y (en) | 1995-08-23 |
Family
ID=33824588
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 94205736 Expired - Fee Related CN2206004Y (en) | 1994-03-26 | 1994-03-26 | High-performance in-line interruption electric source |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2206004Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102571638A (en) * | 2010-12-10 | 2012-07-11 | 深圳市凯旺电子有限公司 | Multimode gateway with functions of data collection and analysis |
| CN105915096A (en) * | 2016-06-28 | 2016-08-31 | 西安太世德航空电器有限公司 | SPWM waveform modulation method and modulation circuit applicable to inverter power supply |
| CN108847778A (en) * | 2018-07-23 | 2018-11-20 | 佛山市众盈电子有限公司 | A kind of inversion controlling method of online high frequency UPS |
-
1994
- 1994-03-26 CN CN 94205736 patent/CN2206004Y/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102571638A (en) * | 2010-12-10 | 2012-07-11 | 深圳市凯旺电子有限公司 | Multimode gateway with functions of data collection and analysis |
| CN105915096A (en) * | 2016-06-28 | 2016-08-31 | 西安太世德航空电器有限公司 | SPWM waveform modulation method and modulation circuit applicable to inverter power supply |
| CN105915096B (en) * | 2016-06-28 | 2018-06-19 | 西安太世德航空电器有限公司 | Suitable for the SPWM waveform modulateds method and modulation circuit of inverter |
| CN108847778A (en) * | 2018-07-23 | 2018-11-20 | 佛山市众盈电子有限公司 | A kind of inversion controlling method of online high frequency UPS |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |