CN210327135U - Main/standby power supply type uninterrupted power supply system based on SiC bidirectional switch - Google Patents
Main/standby power supply type uninterrupted power supply system based on SiC bidirectional switch Download PDFInfo
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- CN210327135U CN210327135U CN201820412352.1U CN201820412352U CN210327135U CN 210327135 U CN210327135 U CN 210327135U CN 201820412352 U CN201820412352 U CN 201820412352U CN 210327135 U CN210327135 U CN 210327135U
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Abstract
The utility model relates to a host and backup power uninterrupted power supply system based on SiC two-way switch, including main power supply, stand-by power supply, first SiC two-way switch, second SiC two-way switch, control circuit, main power supply voltage current detection circuit, stand-by power supply voltage current detection circuit, drive circuit and human-computer interface; the main power supply is connected with the main power supply voltage and current detection circuit and the first SiC bidirectional switch, the main power supply voltage and current detection circuit is connected with the control circuit, the control circuit is connected with the drive circuit, and the drive circuit is connected with the first SiC bidirectional switch and the second SiC bidirectional switch; and the standby power supply is connected with the standby power supply voltage and current detection circuit and the second SiC bidirectional switch, and the standby power supply voltage and current detection circuit is connected with the control circuit.
Description
Technical Field
The invention relates to the technical field of uninterrupted power supply, in particular to a master and standby power supply type uninterrupted power supply system based on a SiC bidirectional switch.
Background
With the development of economy, the wide application of high-tech equipment and the continuous acceleration of marketization process of the power industry, the requirement of users on the reliability of power supply is continuously improved, and particularly, uninterrupted power supply is required for the first-level load which can cause great economic loss, serious environmental pollution, great political influence and social order disorder due to power supply interruption. The early manual switching mode is dangerous and long in switching time, so that short-time power supply interruption is caused; most of the traditional uninterrupted power supply systems are developed on the basis of silicon controlled rectifiers, and when power supply is abnormal, the main-standby switching time is long; meanwhile, peak voltage and surge current are easily generated on the electric load at the moment of switching, and the performance of the switching circuit is difficult to meet the requirement of a user on the power supply reliability which is continuously improved.
Disclosure of Invention
In order to shorten the switching time of the main power supply and the standby power supply when the main power supply fails, effectively inhibit the peak voltage and surge current at the moment of switching and improve the power supply reliability, the invention provides a main power supply and standby power supply type uninterrupted power supply system based on a SiC bidirectional switch,
in order to realize the purpose, the technical scheme is as follows:
a master and standby power supply type uninterrupted power supply system based on a SiC bidirectional switch comprises a main power supply, a standby power supply, a first SiC bidirectional switch, a second SiC bidirectional switch, a control circuit, a main power supply voltage and current detection circuit, a standby power supply voltage and current detection circuit, a driving circuit and a human-computer interface;
the main power supply is connected with the main power supply voltage and current detection circuit and the first SiC bidirectional switch, the main power supply voltage and current detection circuit is connected with the control circuit, the control circuit is connected with the drive circuit, and the drive circuit is connected with the first SiC bidirectional switch and the second SiC bidirectional switch;
and the standby power supply is connected with the standby power supply voltage and current detection circuit and the second SiC bidirectional switch, and the standby power supply voltage and current detection circuit is connected with the control circuit.
When the power supply is used specifically, the main power supply is connected with an electric load through the first SiC bidirectional switch to form a main power supply loop; the standby power supply is connected with the electric load through the second SiC bidirectional switch to form a standby power supply loop; the first SiC bidirectional switch and the second SiC bidirectional switch are connected with the LC auxiliary circuit to form a static switch; the main power supply is connected with the control circuit through a voltage and current detection circuit to form a main power supply side voltage and current detection subsystem; the standby power supply is connected to the control circuit through a standby power supply voltage and current detection circuit to form a standby power supply side voltage and current detection subsystem; the control circuit is connected with the static switch through the driving circuit to form a static switch driving subsystem; the human-computer interface is connected with the control circuit to form a human-computer interaction subsystem.
When the main power supply is abnormal, the control circuit captures the abnormality through the main power supply voltage and current detection circuit, the main power supply side static switch is disconnected through the driving circuit, and the electric load is connected to the standby power supply through the standby power supply side static switch; the SiC bidirectional switch is a fully-controlled switch formed by directly connecting two SiC MOS tubes of the same type in series, and the use of a novel semiconductor device shortens the time of main-standby switching; the introduction of the LC auxiliary circuit can effectively inhibit the peak voltage and surge current generated at the switching moment; the power supply reliability is improved, and the uninterrupted power supply is suitable for providing key loads.
Compared with the prior art, the invention has the beneficial effects that:
the uninterrupted power supply system provided by the invention adopts the novel semiconductor device to shorten the time of main/standby switching; the introduction of the LC auxiliary circuit can effectively inhibit the peak voltage and surge current generated at the switching moment; the power supply reliability is improved, and the uninterrupted power supply is suitable for providing key loads.
Drawings
Fig. 1 is a schematic structural diagram of an uninterruptible power supply system.
Detailed Description
The drawings are for illustrative purposes only and are not to be construed as limiting the patent;
the invention is further illustrated below with reference to the figures and examples.
Example 1
As shown in fig. 1, a main and standby power uninterrupted power supply system based on SiC bidirectional switches includes a main power supply, a standby power supply, a first SiC bidirectional switch, a second SiC bidirectional switch, a control circuit, a main power supply voltage and current detection circuit, a standby power supply voltage and current detection circuit, a driving circuit, and a human-computer interface;
the main power supply is connected with the main power supply voltage and current detection circuit and the first SiC bidirectional switch, the main power supply voltage and current detection circuit is connected with the control circuit, the control circuit is connected with the drive circuit, and the drive circuit is connected with the first SiC bidirectional switch and the second SiC bidirectional switch;
and the standby power supply is connected with the standby power supply voltage and current detection circuit and the second SiC bidirectional switch, and the standby power supply voltage and current detection circuit is connected with the control circuit.
When the power supply is used specifically, the main power supply is connected with an electric load through the first SiC bidirectional switch to form a main power supply loop; the standby power supply is connected with the electric load through the second SiC bidirectional switch to form a standby power supply loop; the first SiC bidirectional switch and the second SiC bidirectional switch are connected with the LC auxiliary circuit to form a static switch; the main power supply is connected with the control circuit through a voltage and current detection circuit to form a main power supply side voltage and current detection subsystem; the standby power supply is connected to the control circuit through a standby power supply voltage and current detection circuit to form a standby power supply side voltage and current detection subsystem; the control circuit is connected with the static switch through the driving circuit to form a static switch driving subsystem; the human-computer interface is connected with the control circuit to form a human-computer interaction subsystem.
When the main power supply is abnormal, the control circuit captures the abnormality through the main power supply voltage and current detection circuit, the main power supply side static switch is disconnected through the driving circuit, and the electric load is connected to the standby power supply through the standby power supply side static switch; the SiC bidirectional switch is a fully-controlled switch formed by directly connecting two SiC MOS tubes of the same type in series, and the use of a novel semiconductor device shortens the time of main-standby switching; the introduction of the LC auxiliary circuit can effectively inhibit the peak voltage and surge current generated at the switching moment; the power supply reliability is improved, and the uninterrupted power supply is suitable for providing key loads.
It should be understood that the above-described embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.
Claims (1)
1. A master and standby power uninterrupted power supply system based on a SiC bidirectional switch is characterized in that: the system comprises a main power supply, a standby power supply, a first SiC bidirectional switch, a second SiC bidirectional switch, a control circuit, a main power supply voltage and current detection circuit, a standby power supply voltage and current detection circuit, a driving circuit and a human-computer interface;
the main power supply is connected with the main power supply voltage and current detection circuit and the first SiC bidirectional switch, the main power supply voltage and current detection circuit is connected with the control circuit, the control circuit is connected with the drive circuit, and the drive circuit is connected with the first SiC bidirectional switch and the second SiC bidirectional switch;
the standby power supply is connected with the standby power supply voltage and current detection circuit and the second SiC bidirectional switch, and the standby power supply voltage and current detection circuit is connected with the control circuit;
the first SiC bidirectional switch and the second SiC bidirectional switch are connected with an LC auxiliary circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820412352.1U CN210327135U (en) | 2018-03-26 | 2018-03-26 | Main/standby power supply type uninterrupted power supply system based on SiC bidirectional switch |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820412352.1U CN210327135U (en) | 2018-03-26 | 2018-03-26 | Main/standby power supply type uninterrupted power supply system based on SiC bidirectional switch |
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| CN210327135U true CN210327135U (en) | 2020-04-14 |
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| CN201820412352.1U Active CN210327135U (en) | 2018-03-26 | 2018-03-26 | Main/standby power supply type uninterrupted power supply system based on SiC bidirectional switch |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108258800A (en) * | 2018-03-26 | 2018-07-06 | 广东电网有限责任公司 | A kind of main power supply formula uninterruptible power system based on SiC two-way switch |
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2018
- 2018-03-26 CN CN201820412352.1U patent/CN210327135U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108258800A (en) * | 2018-03-26 | 2018-07-06 | 广东电网有限责任公司 | A kind of main power supply formula uninterruptible power system based on SiC two-way switch |
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