CN212726552U - High-efficiency energy-saving intelligent UPS (uninterrupted Power supply) based on quick switching of silicon controlled rectifier or IGBT (insulated Gate Bipolar transistor) - Google Patents
High-efficiency energy-saving intelligent UPS (uninterrupted Power supply) based on quick switching of silicon controlled rectifier or IGBT (insulated Gate Bipolar transistor) Download PDFInfo
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- CN212726552U CN212726552U CN202020296841.2U CN202020296841U CN212726552U CN 212726552 U CN212726552 U CN 212726552U CN 202020296841 U CN202020296841 U CN 202020296841U CN 212726552 U CN212726552 U CN 212726552U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B70/00—Technologies for an efficient end-user side electric power management and consumption
- Y02B70/30—Systems integrating technologies related to power network operation and communication or information technologies for improving the carbon footprint of the management of residential or tertiary loads, i.e. smart grids as climate change mitigation technology in the buildings sector, including also the last stages of power distribution and the control, monitoring or operating management systems at local level
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
- Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
- Y04S20/00—Management or operation of end-user stationary applications or the last stages of power distribution; Controlling, monitoring or operating thereof
- Y04S20/20—End-user application control systems
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Abstract
The utility model discloses a high-efficiency energy-saving intelligent UPS power supply based on silicon controlled rectifier or IGBT fast switching, which comprises a main control circuit, a first silicon controlled rectifier or IGBT change-over switch, a second silicon controlled rectifier or IGBT change-over switch, a power supply conversion circuit and a storage battery; the storage battery is connected with the input end of the power conversion circuit, the output end of the power conversion circuit is connected with the second silicon controlled rectifier or IGBT change-over switch, and the alternating current power supply is connected with the first silicon controlled rectifier or IGBT change-over switch; the first silicon controlled rectifier or IGBT change over switch and the second silicon controlled rectifier or IGBT change over switch are connected with the power output interface, the main control circuit is respectively connected with the first silicon controlled rectifier or IGBT change over switch and the second silicon controlled rectifier or IGBT change over switch, the parameters of the alternating current power supply are collected, and the first silicon controlled rectifier or IGBT change over switch and the second silicon controlled rectifier or IGBT change over switch are controlled to be switched. The main control circuit collects parameters of the alternating current power supply, and the silicon controlled rectifier or the IGBT change-over switch is switched according to fluctuation change of the alternating current power supply, so that quick response is realized, and loss is reduced.
Description
Technical Field
The utility model relates to a UPS power technical field especially indicates a high-efficient energy-conserving intelligent UPS power based on silicon controlled rectifier or IGBT fast switch over.
Background
UPS is an abbreviation for Uninterruptable Power Supply, which is called Uninterruptible Power Supply in Chinese. With the development of modern technology, people have higher and higher requirements on a power supply system, and the attention degree on the power technology is gradually improved. The performance of the equipment is improved, the quality of a power supply system also needs to be improved, and the UPS can realize uninterrupted power supply as a novel power supply system. In the present situation, UPS power sources are widely used in various industries, and especially, they play an important role in computer systems and semiconductor industries.
UPS uninterruptible power supplies currently on the market are mainly classified into two main categories: an online UPS power supply and a backup UPS power supply. The backup UPS is mainly suitable for occasions with small fluctuation of commercial power and low requirement on power supply quality. Backup UPS switching times are typically less than 10 milliseconds and are therefore not suitable for use in critical power supply interruption situations. When the mains supply of the online UPS is normal, the AC is firstly changed into the DC, then the pulse width modulation and the filtering are carried out, then the DC is converted into the AC again to supply power to the load, and once the power system detects the interruption of the mains supply, the storage battery inverter is immediately changed to supply power to the load, so that the output of the online UPS is a pure sine wave power supply which is completely isolated from the mains supply power grid, but because the online UPS is always in a working state, the energy efficiency loss is more than 5 percent.
SUMMERY OF THE UTILITY MODEL
The utility model provides an energy-efficient intelligent UPS power based on silicon controlled rectifier or IGBT fast switch over has solved among the prior art backup UPS switching time long, the high problem of online UPS efficiency loss.
The technical scheme of the utility model is realized like this:
a high-efficiency energy-saving intelligent UPS based on silicon controlled rectifier or IGBT fast switching comprises a main control circuit, a first silicon controlled rectifier or IGBT change-over switch, a second silicon controlled rectifier or IGBT change-over switch, a power conversion circuit and a storage battery; the storage battery is connected with the input end of the power supply conversion circuit, the output end of the power supply conversion circuit is connected with the second silicon controlled rectifier or IGBT change-over switch, and an alternating current power supply is connected with the first silicon controlled rectifier or IGBT change-over switch; the first silicon controlled rectifier or IGBT change over switch and the second silicon controlled rectifier or IGBT change over switch are connected with a power output interface, the main control circuit is respectively connected with the first silicon controlled rectifier or IGBT change over switch and the second silicon controlled rectifier or IGBT change over switch, the parameters of the alternating current power supply are collected, and the first silicon controlled rectifier or IGBT change over switch and the second silicon controlled rectifier or IGBT change over switch are controlled to be switched.
As a preferred embodiment of the present invention, the storage battery includes an AC/DC charging circuit and a battery pack, and output pins of the AC/DC charging circuit are connected to positive and negative electrodes of the battery pack, respectively.
As a preferred embodiment of the present invention, the AC/DC charging circuit includes a DC/DC conversion circuit of a preceding stage rectification boost PFC circuit and a subsequent stage LLC topology.
As a preferred embodiment of the present invention, the input terminal of the storage battery is connected to an ac power supply.
As a preferred embodiment of the present invention, the power conversion circuit includes a DC/DC boost circuit and a DC/AC inverter circuit, the battery is connected to the DC/DC boost circuit input end, the output end of the DC/DC boost circuit is connected to the input end of the DC/AC inverter circuit.
As a preferred embodiment of the present invention, the DC/DC boost circuit includes two boost circuits of LLC topology.
As a preferred embodiment of the present invention, the DC/DC boost circuit outputs a 400V DC power supply.
As a preferred embodiment of the present invention, the DC/AC inverter circuit adopts a three-level half-bridge LC filter structure.
As a preferred embodiment of the present invention, the main control circuit includes an MCU or a single chip microcomputer.
The beneficial effects of the utility model reside in that: the main control circuit collects parameters of the alternating current power supply, and the silicon controlled rectifier or the IGBT change-over switch is switched according to fluctuation change of the alternating current power supply, so that quick response is realized, and loss is reduced.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without inventive exercise.
Fig. 1 is a circuit diagram of an embodiment of an efficient energy-saving intelligent UPS power supply based on thyristor or IGBT fast switching of the present invention;
FIG. 2 is a circuit schematic of a DC/DC boost circuit;
FIG. 3 is a circuit diagram of a single-phase DC/AC inverter circuit;
FIG. 4 is a circuit schematic of a three-phase DC/AC inverter circuit.
In the figure, 1-master control circuit; 2-a first thyristor or IGBT diverter switch; 3-a second thyristor or IGBT diverter switch; 4-a power conversion circuit; 5-a storage battery; 51-AC/DC charging circuit; and 52-a battery pack.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
As shown in fig. 1-4, the utility model provides a high-efficiency energy-saving intelligent UPS power supply based on silicon controlled rectifier or IGBT fast switch, which comprises a main control circuit 1, a first silicon controlled rectifier or IGBT change-over switch 2, a second silicon controlled rectifier or IGBT change-over switch 3, a power conversion circuit 4 and a storage battery 5; the storage battery 5 is connected with the input end of the power supply conversion circuit 4, the output end of the power supply conversion circuit 4 is connected with the second silicon controlled rectifier or IGBT change-over switch 3, and the alternating current power supply is connected with the first silicon controlled rectifier or IGBT change-over switch 2; the first silicon controlled rectifier or IGBT change over switch 2, the second silicon controlled rectifier or IGBT change over switch 3 connect the power output interface, the main control circuit 1 connects with first silicon controlled rectifier or IGBT change over switch 2, the second silicon controlled rectifier or IGBT change over switch 3 separately, gather the parameter of the alternating current power, and control the first silicon controlled rectifier or IGBT change over switch 2, the second silicon controlled rectifier or IGBT change over switch 3 to switch over.
The storage battery 5 comprises an AC/DC charging circuit 51 and a battery pack 52, and output pins of the AC/DC charging circuit 51 are respectively connected with the positive electrode and the negative electrode of the battery pack 52. The AC/DC charging circuit 51 includes a preceding stage rectification boost PFC circuit and a DC/DC conversion circuit of a succeeding stage LLC topology. The constant current and the constant voltage are provided to charge and manage the battery pack 52, the power factor reaches more than 0.99, and the charging efficiency reaches more than 93%.
The input end of the storage battery 5 is connected with an alternating current power supply. Specifically, the ac power supply is a commercial power input.
The power conversion circuit 4 comprises a DC/DC booster circuit and a DC/AC inverter circuit, the storage battery 5 is connected with the input end of the DC/DC booster circuit, and the output end of the DC/DC booster circuit is connected with the input end of the DC/AC inverter circuit. The DC/DC booster circuit comprises two paths of booster circuits with LLC topology, and the DC/DC booster circuit isolates and boosts the battery voltage to two paths of 400V and provides stable positive and negative 400V direct-current power supplies for the post-stage DC/AC. The DC/AC inverter circuit adopts a three-level half-bridge LC filter structure to generate stable inverter voltage output.
The main control circuit 1 comprises an MCU or a singlechip, and the specific model can be customized by technical personnel according to the user requirement. The method comprises the steps of utilizing an MCU/singlechip to sample and record data such as power grid voltage, current and frequency in real time, analyzing the sampled data at a sampling recording interval of 67us, carrying out phase-locked tracking on sine waveform of the power grid voltage, and controlling SCR/IGBT-1 and SCR/IGBT-2 to carry out fast switching when voltage sag and current of a power grid are overlarge, wherein the response speed is less than 2 ms.
The utility model discloses a theory of operation does: when the mains supply is normal, the mains supply is output and supplied to the electric equipment through a first silicon controlled rectifier or IGBT change-over switch 2(SCR/IGBT-1), and the storage battery 5 is in a charging state. When the voltage sag occurs, the power supply conversion circuit 4 works, the direct current Vbus provided by the battery is boosted through the DC/DC, and is converted into stable alternating current through the DC/AC inverter circuit, and then the SCR/IGBT-1 is switched off, and the SCR/IGBT-2 is switched on and output to the electric equipment. When the commercial power returns to normal, the SCR/IGBT-2 is cut off, the SCR/IGBT-1 is connected, the commercial power supply is restored, the MCU/single chip microcomputer monitors the commercial power input in real time, when the commercial power input drops temporarily, the MCU/single chip microcomputer can respond quickly, and controls the SCR/IGBT-1 and the SCR/IGBT-2 to be switched, so that the response time of less than 2ms is realized.
The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (9)
1. The utility model provides an energy-efficient intelligent UPS power based on silicon controlled rectifier or IGBT fast switch over which characterized in that: the power supply switching circuit comprises a main control circuit, a first silicon controlled rectifier or IGBT change-over switch, a second silicon controlled rectifier or IGBT change-over switch, a power supply switching circuit and a storage battery; the storage battery is connected with the input end of the power supply conversion circuit, the output end of the power supply conversion circuit is connected with the second silicon controlled rectifier or IGBT change-over switch, and an alternating current power supply is connected with the first silicon controlled rectifier or IGBT change-over switch; the first silicon controlled rectifier or IGBT change over switch and the second silicon controlled rectifier or IGBT change over switch are connected with a power output interface, the main control circuit is respectively connected with the first silicon controlled rectifier or IGBT change over switch and the second silicon controlled rectifier or IGBT change over switch, the parameters of the alternating current power supply are collected, and the first silicon controlled rectifier or IGBT change over switch and the second silicon controlled rectifier or IGBT change over switch are controlled to be switched.
2. An efficient energy-saving intelligent UPS power supply based on silicon controlled rectifier or IGBT fast switching according to claim 1 is characterized in that: the storage battery comprises an AC/DC charging circuit and a battery pack, and output pins of the AC/DC charging circuit are respectively connected with the positive electrode and the negative electrode of the battery pack.
3. An efficient energy-saving intelligent UPS power supply based on silicon controlled rectifier or IGBT fast switching according to claim 2 is characterized in that: the AC/DC charging circuit comprises a front stage rectification boost PFC circuit and a rear stage LLC topological DC/DC conversion circuit.
4. An efficient energy-saving intelligent UPS power supply based on silicon controlled rectifier or IGBT fast switching according to any one of claims 1-3, characterized in that: and the input end of the storage battery is connected with an alternating current power supply.
5. An efficient energy-saving intelligent UPS power supply based on silicon controlled rectifier or IGBT fast switching according to claim 1 is characterized in that: the power conversion circuit comprises a DC/DC booster circuit and a DC/AC inverter circuit, the storage battery is connected with the input end of the DC/DC booster circuit, and the output end of the DC/DC booster circuit is connected with the input end of the DC/AC inverter circuit.
6. An efficient energy-saving intelligent UPS power supply based on silicon controlled rectifier or IGBT fast switch according to claim 5 is characterized in that: the DC/DC booster circuit comprises two paths of booster circuits with LLC topology.
7. An efficient energy-saving intelligent UPS power supply based on silicon controlled rectifier or IGBT fast switch according to claim 6 is characterized in that: the DC/DC booster circuit outputs 400V direct current power supply.
8. An efficient energy-saving intelligent UPS power supply based on silicon controlled rectifier or IGBT fast switch according to claim 5 is characterized in that: the DC/AC inverter circuit adopts a three-level half-bridge LC filter structure.
9. An efficient energy-saving intelligent UPS power supply based on silicon controlled rectifier or IGBT fast switching according to claim 1 is characterized in that: the main control circuit comprises an MCU or a singlechip.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020296841.2U CN212726552U (en) | 2020-03-11 | 2020-03-11 | High-efficiency energy-saving intelligent UPS (uninterrupted Power supply) based on quick switching of silicon controlled rectifier or IGBT (insulated Gate Bipolar transistor) |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020296841.2U CN212726552U (en) | 2020-03-11 | 2020-03-11 | High-efficiency energy-saving intelligent UPS (uninterrupted Power supply) based on quick switching of silicon controlled rectifier or IGBT (insulated Gate Bipolar transistor) |
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| Publication Number | Publication Date |
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| CN212726552U true CN212726552U (en) | 2021-03-16 |
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| CN202020296841.2U Active CN212726552U (en) | 2020-03-11 | 2020-03-11 | High-efficiency energy-saving intelligent UPS (uninterrupted Power supply) based on quick switching of silicon controlled rectifier or IGBT (insulated Gate Bipolar transistor) |
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| CN (1) | CN212726552U (en) |
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