CN209488252U - A kind of off-line UPS system of sinusoidal output - Google Patents
A kind of off-line UPS system of sinusoidal output Download PDFInfo
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- CN209488252U CN209488252U CN201821929332.8U CN201821929332U CN209488252U CN 209488252 U CN209488252 U CN 209488252U CN 201821929332 U CN201821929332 U CN 201821929332U CN 209488252 U CN209488252 U CN 209488252U
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Abstract
The utility model proposes a kind of sinusoidal output off-line UPS system, it include: the first circuit being connected in parallel between exchange input and exchange output and second servo loop, the second servo loop includes charger, battery, DC/DC converter, inverter, the input terminal of the charger exchanges input connection with described, the input terminal of the battery is connect with the output end of the charger, the input terminal of the DC/DC converter is connect with the output end of the battery, and the input terminal of the inverter is connect with the output end of the DC/DC converter；First circuit includes AC voltage regulator, the input terminal of the AC voltage regulator is connect with the ac input end, the output end of the AC voltage regulator and the first port input terminal of change-over switch connect, the output end of the inverter and the second port input terminal of change-over switch connect, and the output end of the change-over switch is connect with ac output end.The utility model has structure simple, at low cost, and switching efficiency is high, technical effect reliable for operation.
Description
Technical field
The utility model relates to field of power supplies more particularly to a kind of off-line UPS systems of sinusoidal output.
Background technique
With social progress and development, the power supply of national most area is had been greatly developed, but very
More places still have the problem of grid supply quality not can guarantee.Due to the various undesirable elements from power grid, such as voltage
Surge, input waveform distortion, the interference of various spikes and noise etc., everything comes important institution facilities and the equipment that cannot be interrupted
Illustrate to show and constitute a threat to, so there is an urgent need to reliable UPS no-break power units.
UPS uninterruptible power supply is in recent years as a kind of use scope very extensive equipment of guarantee power supply
Reveal the impetus of rapid growth.In the epoch now, place, such as bank, hospitals and other places are often being entered and left, occupied space is needed
Smaller, at low cost and maintenance is simple, output power, the emergency no-break power unit of higher reliability.Existing UPS not between
The volume in power-off source is larger, and occupied space is larger, and safety and reliability is lower.
Utility model content
The utility model is exactly in view of the deficienciess of the prior art, simple, at low cost, the switching effect that provides a kind of structure
Rate is high, the off-line UPS system of sinusoidal output reliable for operation.
Technical solution adopted in the utility model is as follows:
A kind of off-line UPS system of sinusoidal output, comprising: first time be connected in parallel between exchange input and exchange output
Road and second servo loop, the second servo loop include charger, battery, DC/DC converter, inverter, the charger it is defeated
Enter end and exchange input connection with described, the input terminal of the battery is connect with the output end of the charger, and the DC/DC becomes
The input terminal of parallel operation is connect with the output end of the battery, and the input terminal of the inverter is defeated with the DC/DC converter
Outlet connection；First circuit includes AC voltage regulator, and the input terminal of the AC voltage regulator and the ac input end connect
It connects, the output end of the AC voltage regulator is connect with the first port input terminal of the change-over switch, the output of the inverter
End is connect with the second port input terminal of change-over switch, and the output end of the change-over switch is connect with ac output end.
Preferably, the DC/DC converter includes power input circuit and power output circuit, the power input circuit
Including power switch tube Q1 and Q2, two pairs of primary side windings, the anode of the battery is distinguished by the first winding and the second winding
Connect the drain electrode of power switch tube Q1 and Q2, the source electrode of cathode connection the power switch tube Q1 and Q2 of the battery；The function
Rate output circuit includes vice-side winding, diode D1, D2, D3, D4, inductance L1, capacitor C1, diode D2 anode and vice-side winding
Different name end, the connection of diode D4 cathode；Diode D1 anode is connect with vice-side winding Same Name of Ends, diode D3 cathode；Diode
D1 with D2 common cathode connects；Diode D3 is connected with D4 common-anode；One end of the cathode of diode D1 and D2 and the inductance L1
Connection, the other end connection converter output terminal anode of inductance L1；It is negative that diode D3 connects converter output terminal with the anode of D4
Pole；Capacitor C1 is connected between converter output terminal anode and cathode.
Preferably, the inverter includes inverter section and filtering part；The inverter section includes can by four
The electric bridge of device composition is controlled, the electric bridge has first port input terminal, first port output end, second port input terminal and the
Two-port netwerk output end, the first port input terminal and second port input terminal are electrically coupled the output end of converter, to be formed
The unidirectional parallel branch of electric bridge；Four controllable devices respectively with diode D5, D6, D7, D8 inverse parallel；The filtering part includes
After inductance L2 and capacitor C2, the inductance L2 and capacitor C2 connect, the inductance L2 is connected to the first port output end, institute
It states capacitor C2 and is connected to the second port output end.
Preferably, the inverter has control circuit, and the control circuit includes SPWM module and inverter control mould
Block, the input terminal of the Inverter control module and the output end of current-voltage transformer connect, the current-voltage transformer
It is arranged in inductance L2 and between the antiparallel controllable devices of diode D5, the output end and SPWM of the Inverter control module
The signal input part of module input connection, SPWM module input and inverter section connects.
Preferably, the controllable devices are metal-oxide-semiconductor.
Preferably, the voltage of the battery is 12V.
Compared with prior art, the implementation result of the utility model is as follows:
Present apparatus good compatibility, circuit is simple, and integrated level is high, stability and highly-safe；The waveform of output be standard just
String wave, waveform distortion is low, high frequency, does not generate idle pollution to power supply, small investment can complete design demand, can satisfy
The living needs of user.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the utility model；
Fig. 2 is the DC/DC converter principle figure of the utility model
Fig. 3 is the converter main circuit model of the utility model.
Specific embodiment
The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model
Describe to clear, integrality.Certainly, described embodiment is the utility model a part of the embodiment, rather than whole
Embodiment.
It is the structural schematic diagram of the utility model in conjunction with Fig. 1, Fig. 1.
The utility model proposes a kind of sinusoidal output off-line UPS system, including AC voltage regulator, charger, storage
Battery, DC/DC converter, inverter, change-over switch, and the first circuit in parallel is formed between exchange input and exchange output
And second servo loop.
First circuit AC voltage regulator, AC voltage regulator input terminal are connect with ac input end, and AC voltage regulator is defeated
The connection of the first port input terminal of outlet and change-over switch.
The second servo loop includes charger, battery, DC/DC converter, inverter, the input terminal of the charger with
The exchange input connection, the input terminal of the battery are connect with the output end of the charger, the DC/DC converter
Input terminal is connect with the output end of the battery, and the output end of the input terminal of the inverter and the DC/DC converter connects
It connects, the output end of the inverter and the second port input terminal of change-over switch connect.
Change-over switch output end connection ac output end (load) power supply.When electric main is normal, change-over switch
It is switched to powering load on the first circuit, when electric main occurs abnormal, is directly switch on second servo loop and is supplied to load
Electricity.
It is the DC/DC converter principle figure of the utility model in conjunction with Fig. 2, Fig. 2.
For DC/DC converter when providing input direct-current voltage to inverter, DC voltage has to be larger than 380V, could be defeated
The alternating voltage of 220V out.The voltage of battery in the present embodiment is 12V, it is necessary to by converter by voltage transformation at electricity
Press higher stable DC voltage.It is inputted in conjunction with the low-voltage of this system, the actual features of high voltage output, the present embodiment uses
The push-pull converter of two-switch control.The converter includes power input circuit and power output circuit, the power input circuit
Including power switch tube Q1 and Q2, two pairs of primary side windings, the anode of the battery is distinguished by the first winding and the second winding
Connect the drain electrode of power switch tube Q1 and Q2, the source electrode of cathode connection the power switch tube Q1 and Q2 of the battery；The function
Rate output circuit includes vice-side winding, diode D1, D2, D3, D4, inductance L1, capacitor C1, diode D2 anode and vice-side winding
Different name end, the connection of diode D4 cathode；Diode D1 anode is connect with vice-side winding Same Name of Ends, diode D3 cathode；Diode
D1 with D2 common cathode connects；Diode D3 is connected with D4 common-anode；One end of the cathode of diode D1 and D2 and the inductance L1
Connection, the other end connection converter output terminal anode of inductance L1；It is negative that diode D3 connects converter output terminal with the anode of D4
Pole；Capacitor C1 is connected between converter output terminal anode and cathode.
The principle of converter in the present embodiment is as follows: by two switching tube Q1 and Q2 of control with identical switching frequency
Alternate conduction, and the duty ratio d of each switching tube is respectively less than 50%, reserves certain dead time to avoid Q1 and Q2 while leading
It is logical.Recommending inversion for input direct-current low-voltage inverter by prime is ac high frequency low-voltage, is sent to high frequency transformer primary side, and lead to
It crosses transformer coupled, ac high frequency high voltage is obtained on secondary side, using the full-bridge being made of reversed fast recovery diode FRD
Desired DC high voltage is obtained after rectification, filtering.RC buffer circuit is connected between Q1 and the drain electrode of Q2, is also referred to as absorbed
Circuit, for inhibiting the generation of peak voltage.And in order to give energy feedback to provide feedback loop, the both ends Q1 and Q2 all it is anti-simultaneously
Sustained diode on connection.
It is the converter main circuit model of the utility model in conjunction with Fig. 3, Fig. 3.
Inverter is the core of entire ups system, is reverse into the exchange electricity output of 220V, 50Hz.It is inverse in the present embodiment
Become device and use powerful MOS module full bridge inverter, is made of the metal-oxide-semiconductor that four corresponding pins are connected.The inverter
Including inverter section and filtering part；The inverter section includes the electric bridge being made of four controllable devices, the electric bridge
With first port input terminal, first port output end, second port input terminal and second port output end, the first port
Input terminal and second port input terminal are electrically coupled the output end of converter, to form the unidirectional parallel branch of electric bridge；Four can
Control device respectively with diode D5, D6, D7, D8 inverse parallel；The filtering part includes inductance L2 and capacitor C2, the inductance
After L2 and capacitor C2 series connection, the inductance L2 is connected to the first port output end, and the capacitor C2 is connected to described second
Port output end.
Inverter is stated with control circuit, the control circuit includes SPWM module and Inverter control module, described inverse
The output end of the input terminal and current-voltage transformer that become device control module connects, and the current-voltage transformer is arranged in inductance
L2 and between the antiparallel controllable devices of diode D5, the output end and SPWM module input of the Inverter control module
The signal input part of connection, SPWM module input and inverter section connects.
Special EG8010-SPWM pure sinusoid inverter control chip can be used in control circuit, generates and is used for SPWM module
The modulating wave of modulation control, and 4 control device work are driven, control unit can be used metal-oxide-semiconductor, pass through 380V direct current
Metal-oxide-semiconductor modulates 220V pure sine wave alternating current.
The above is only the preferred embodiment of the utility model only, is not intended to limit the utility model, all at this
Made any modifications, equivalent replacements, and improvements etc., should be included in the utility model within the spirit and principle of utility model
Protection scope within.
Claims (6)
1. a kind of off-line UPS system of sinusoidal output characterized by comprising be connected in parallel on exchange and input and exchange output
Between the first circuit and second servo loop, the second servo loop include charger, battery, DC/DC converter, inverter, it is described
The input terminal of charger exchanges input connection with described, and the input terminal of the battery is connect with the output end of the charger,
The input terminal of the DC/DC converter is connect with the output end of the battery, the input terminal of the inverter and the DC/DC
The output end of converter connects；First circuit includes AC voltage regulator, the input terminal of the AC voltage regulator and the friendship
Input terminal connection is flowed, the output end of the AC voltage regulator and the first port input terminal of change-over switch connect, the inverter
Output end and the second port input terminal of change-over switch connect, the output end of the change-over switch connect with ac output end.
2. the off-line UPS system of sinusoidal output according to claim 1, which is characterized in that the DC/DC converter packet
Include power input circuit and power output circuit, the power input circuit include power switch tube Q1 and Q2, two pairs of primary sides around
Group, the anode of the battery is separately connected the drain electrode of power switch tube Q1 and Q2 by the first winding and the second winding, described
The source electrode of cathode connection the power switch tube Q1 and Q2 of battery；The power output circuit include vice-side winding, diode D1,
D2, D3, D4, inductance L1, capacitor C1, diode D2 anode are connect with vice-side winding different name end, diode D4 cathode；Diode D1
Anode is connect with vice-side winding Same Name of Ends, diode D3 cathode；Diode D1 is connected with D2 common cathode；Diode D3 and D4 common anode
Pole connection；The cathode of diode D1 and D2 are connect with one end of the inductance L1, the other end connection converter output of inductance L1
Rectify pole；Diode D3 connects converter output terminal cathode with the anode of D4；Capacitor C1 be connected on converter output terminal anode and
Between cathode.
3. the off-line UPS system of sinusoidal output according to claim 1, which is characterized in that the inverter includes inverse
Become device part and filtering part；The inverter section includes the electric bridge being made of four controllable devices, and the electric bridge has the
Single port input terminal, first port output end, second port input terminal and second port output end, the first port input terminal
It is electrically coupled the output end of converter, with second port input terminal to form the unidirectional parallel branch of electric bridge；Four controllable devices
Respectively with diode D5, D6, D7, D8 inverse parallel；The filtering part includes inductance L2 and capacitor C2, the inductance L2 and capacitor
After C2 series connection, the inductance L2 is connected to the first port output end, and the capacitor C2 is connected to the second port output
End.
4. the off-line UPS system of sinusoidal output according to claim 3, which is characterized in that the inverter has control
Circuit processed, the control circuit include SPWM module and Inverter control module, the input terminal of the Inverter control module with
The output end of current-voltage transformer connects, the current-voltage transformer setting inductance L2 and with diode D5 it is antiparallel
Between controllable devices, the output end of the Inverter control module is connect with SPWM module input, SPWM module input with
The signal input part of inverter section connects.
5. the off-line UPS system of sinusoidal output according to claim 3, which is characterized in that the controllable devices are MOS
Pipe.
6. the off-line UPS system of sinusoidal output according to claim 1, which is characterized in that the voltage of the battery
For 12V.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821929332.8U CN209488252U (en) | 2018-11-22 | 2018-11-22 | A kind of off-line UPS system of sinusoidal output |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821929332.8U CN209488252U (en) | 2018-11-22 | 2018-11-22 | A kind of off-line UPS system of sinusoidal output |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209488252U true CN209488252U (en) | 2019-10-11 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821929332.8U Expired - Fee Related CN209488252U (en) | 2018-11-22 | 2018-11-22 | A kind of off-line UPS system of sinusoidal output |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117713198A (en) * | 2023-12-08 | 2024-03-15 | 广州云酷智能设备有限公司 | Grid-connected inverter control core module and photovoltaic power conversion cabinet |
-
2018
- 2018-11-22 CN CN201821929332.8U patent/CN209488252U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117713198A (en) * | 2023-12-08 | 2024-03-15 | 广州云酷智能设备有限公司 | Grid-connected inverter control core module and photovoltaic power conversion cabinet |
| CN117713198B (en) * | 2023-12-08 | 2024-05-24 | 广州云酷智能设备有限公司 | Grid-connected inverter control core module and photovoltaic power conversion cabinet |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20191011 Termination date: 20211122 |