CN212063617U - Power-off protection circuit of magnetic bearing control system - Google Patents
Power-off protection circuit of magnetic bearing control system Download PDFInfo
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- CN212063617U CN212063617U CN202020894266.6U CN202020894266U CN212063617U CN 212063617 U CN212063617 U CN 212063617U CN 202020894266 U CN202020894266 U CN 202020894266U CN 212063617 U CN212063617 U CN 212063617U
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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 magnetic bearing control system's power-off protection circuit, include: relay switching circuit, power monitoring circuit, power converting circuit. The relay switching circuit is used for switching the first main power supply and the second standby power supply; the power supply monitoring circuit is used for monitoring the first main power supply and the second standby power supply; the power supply conversion circuit realizes the conversion of alternating current power supply into direct current power supply required by the system. The content can improve the reliability of power supply, ensure that the equipment power supply is normal, can monitor the state of the power supply in real time, ensure the normal and stable work of the system, and the circuit structure is simple and practical, and is convenient to maintain.
Description
Technical Field
The utility model belongs to the technical field of the electron technique and specifically relates to a magnetic bearing control system's power-off protection is related to.
Background
The magnetic suspension bearing is a supporting form for supporting a load or a suspension rotor by utilizing magnetic field force, has the characteristics of no friction, no abrasion, no lubrication and the like, avoids mechanical contact between the rotor and a stator in the movement process, can rotate at high speed, has extremely low power consumption and noise, and can be suitable for various complex application environments.
The magnetic bearing system is generally divided into a magnetic bearing controller, a rotor, an electromagnet, a sensor and the like, wherein the controller is a key part of the magnetic bearing controller and determines the performance of the whole magnetic bearing system. However, in actual operation, the magnetic bearing controller is at risk of being out of operation when power is removed, which may cause the rotor rotating at high speed to lose support force, drop suddenly, rub against other mechanical parts at high speed, and damage the system.
To solve this problem, a power-off protection circuit of a magnetic bearing control system is proposed to solve the above-mentioned problem.
SUMMERY OF THE UTILITY MODEL
For solving the problem that the traditional magnetic bearing controller can not be used when the power is cut off, the utility model provides a magnetic bearing control system's power-off protection circuit for provide the protection for the magnetic bearing controller.
In order to realize the power-off protection circuit of the magnetic bearing control system, the power-off protection circuit comprises a relay switching circuit, a power supply monitoring circuit, a system power supply and the like;
the relay switching circuit comprises a relay with a 2-pole normally open normally closed contact, can realize the switching part of a main power supply and a standby power supply, and is respectively connected with the first main power supply, the second standby power supply and a rear-end power supply in a conversion mode.
The first main power supply adopts external power supply, and the second standby power supply adopts two phases of a three-phase motor as standby power supplies for power supply.
And a control coil of the relay switching circuit is connected with the first main power supply, and a normally open contact of the relay switching circuit is connected with the first main power supply.
And a normally closed contact of the relay switching circuit is connected with a second standby power supply.
And the common contact of the relay switching circuit is connected with a system power supply.
Power monitoring circuit, contain 2 power monitoring parts, can realize the control to first main power supply and second stand-by power supply, first main power supply keeps apart control 1 with the power and is connected, second stand-by power supply keeps apart control 2 with the second power and is connected, 2 way power supply keeps apart control output and is connected with power monitoring signal respectively.
The power conversion circuit is a rectifier bridge circuit and converts alternating current power supply into direct current power supply, and the output of the power conversion circuit is connected with the power supply output, so that the wiring polarity of the first main power supply and the second standby power supply can be not considered.
According to the utility model provides a concrete fact mode, the utility model discloses a following technological effect.
The utility model discloses an output and the input connection of relay switching circuit with first main power supply, second stand-by power supply's output and relay switching circuit's input connection, relay switching circuit's output and power conversion circuit's input connection, first main power supply and power monitoring circuit's input connection, second stand-by power supply and power monitoring circuit's another input connection, the power-off protection circuit has been constituted, the automatic switch-over of power has been realized with a relay, and monitor the power, circuit structure is simple and practical, it is convenient to maintain.
Drawings
FIG. 1 is a block diagram of the power-off protection circuit of the magnetic bearing control system of the present invention
FIG. 2 is a block diagram of the relay switching circuit of the protection circuit of the present invention
FIG. 3 is a block diagram of the protection circuit power conversion circuit of the present invention
FIG. 4 is a block diagram of the power supply monitoring circuit of the protection circuit of the present invention
Description of the symbols
A first main power supply-1; a second backup power supply-2; a relay switching circuit-3; a power supply monitoring circuit-4; a power conversion circuit-5; power supply monitor signal-6; power supply output-7; relay normally closed contact-31; relay common contact-32; relay normally open contact-33; a relay control coil-34; power isolation monitoring 1-41; power isolation monitoring 2-42; a rectifier circuit-51;
Detailed Description
For a better understanding of the present invention, reference will now be made to the following detailed description taken in conjunction with the accompanying drawings. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
The utility model aims at providing a magnetic bearing control system's power-off protection circuit has the reliability that improves the power supply, guarantees that the equipment power supply is normal, and the normal stable work of system is ensured to the state that can real time monitoring power simultaneously, and circuit structure is simple and practical, and it is convenient to maintain.
Fig. 1 is the overall block diagram of the present invention, as shown in fig. 1, the circuit of the present invention includes a relay switching circuit 1, a power monitoring circuit 4, a power conversion circuit 5, and other parts.
The first main power supply 1 adopts external power supply, and the second standby power supply 2 adopts two phases of a three-phase motor or UPS output as a standby power supply for power supply. The first main power supply and the second standby power supply can be alternating current or direct current.
The outputs of the first main power supply 1 and the second standby power supply 2 are connected with the input of the relay switching circuit 3, the output of the relay switching circuit 3 is connected with the input of the power supply conversion circuit 5, and the output of the power supply conversion circuit 5 is connected with the input of the power supply output 7.
The outputs of the first main power supply 1 and the second standby power supply 2 are connected with the input of a power supply monitoring circuit 4, and the output of the power supply monitoring circuit 4 is connected with the input of a power supply monitoring signal 6.
The relay switching circuit 3 is used for automatically switching according to the states of the first main power supply 1 and the second standby power supply 2 and controlling the input connection of the first main power supply 1 or the second standby power supply 2 and the power supply conversion circuit 5
Specifically, when the first main power supply 1 and the second standby power supply 2 supply power simultaneously or only the first main power supply 1 supplies power, the power supply is automatically switched to the first main power supply 1 to be connected with the power conversion circuit 5.
When the power is supplied by only the second standby power supply 2, the second standby power supply 2 is automatically switched to be connected with the power conversion circuit 5.
The power supply conversion circuit 5 is used for performing voltage conversion on the first main power supply 1 and the second standby power supply 2 and then is connected with the power supply output 7 in an input mode
Specifically, when the output of the relay switching circuit 3 is alternating current power supply, the output of the relay switching circuit is direct current power supply through the rectifying circuit, and then the power supply output 7 is connected.
When the output of the relay switching circuit 3 is the direct current power supply, the output of the relay switching circuit is connected with the power supply output 7 after the direct current power supply is kept through the output of the rectifying circuit.
The power supply monitoring circuit 5 is used for inputting and connecting the power supply monitoring signal 7 after the power supply monitoring is carried out on the first main power supply 1 and the second standby power supply 2
Specifically, when the first main power supply 1 is powered or unpowered, the power supply monitoring circuit is at a high level or a low level, respectively.
When the second standby power supply 2 is powered or unpowered, the power supply monitoring circuit is respectively at a high level or a level.
Fig. 2 is a block diagram of the relay switching circuit of the present invention.
As shown in fig. 2, the first power supply 1 is connected to a normally open contact 31, the power conversion circuit 5 is connected to a common contact 32, the second backup power supply 2 is connected to a normally closed contact 33, and the first main power supply 1 is connected to a control coil 34.
Fig. 3 is a block diagram of the power conversion circuit of the present invention.
As shown in fig. 3, the output of the relay switching circuit 3 is connected to the input of a rectifier circuit 51, and the output of the rectifier circuit 51 is connected to the input of the power supply output 7.
Fig. 4 is a block diagram of the power supply monitoring circuit of the present invention.
As shown in fig. 4, the first main power supply 1 is connected to the input of a power isolation monitor 41, and the output of the power isolation monitor 41 is connected to the input of a power monitoring signal 6
The second standby power supply 2 is connected with a power isolation monitor 42, and the output of the power isolation monitor 42 is connected with the input of a power monitoring signal 6
The utility model discloses an output and the input connection of relay switching circuit with first main power supply, second stand-by power supply's output and relay switching circuit's input connection, relay switching circuit's output and power conversion circuit's input connection, first main power supply and power monitoring circuit's input connection, second stand-by power supply and power monitoring circuit's another input connection, the power-off protection circuit has been constituted, the automatic switch-over of power has been realized with a relay, and monitor the power, circuit structure is simple and practical, it is convenient to maintain.
In the present description, the embodiments are described in a progressive manner, and the above description is only a specific embodiment of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is within the scope of the present invention, and all the technical solutions of the present invention and the concepts of the present invention should be covered by the protection scope of the present invention.
Claims (3)
1. A power down protection circuit for a magnetic bearing control system, comprising:
the relay switching circuit, the power supply monitoring circuit and the power supply conversion circuit;
the first main power supply adopts external power supply, and the second standby power supply adopts two phases of a three-phase motor as standby power supplies for power supply;
a relay switching circuit: the first main power supply and the second standby power supply are alternating current power supplies or direct current power supplies;
the power supply monitoring circuit: the first main power supply and the second standby power supply are monitored, a decision is made for a subsequent main control, the current power supply state is judged, and corresponding operation is performed.
2. The magnetic bearing control system circuit of claim 1 wherein said relay switching circuit is a 2-pole normally open normally closed contact relay;
the power supply monitoring circuit realizes power supply isolation monitoring through an optocoupler and respectively monitors a first main power supply and a second standby power supply;
the power supply conversion circuit is a rectification circuit and realizes the conversion of alternating current power supply into direct current power supply required by the system.
3. The power-off protection circuit for a magnetic bearing control system of claim 2 wherein the first main power supply is connected to the normally open contact of the relay, the first main power supply is connected to the relay control coil, the second backup power supply is connected to the normally closed contact of the relay, and the relay common contact is in alternating connection with the power supply;
the power supply monitoring circuit: the first main power supply is connected with the first power supply isolation monitoring, the second standby power supply is connected with the second power supply isolation monitoring, and the 2 paths of power supply monitoring output are respectively connected with power supply monitoring signals;
the power conversion circuit comprises: the relay switching circuit is connected with the power supply conversion circuit, the power supply conversion circuit is a rectifier bridge circuit and converts alternating current power supply into direct current power supply, and the output of the power supply conversion circuit is connected with the power supply output.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020894266.6U CN212063617U (en) | 2020-05-25 | 2020-05-25 | Power-off protection circuit of magnetic bearing control system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020894266.6U CN212063617U (en) | 2020-05-25 | 2020-05-25 | Power-off protection circuit of magnetic bearing control system |
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| Publication Number | Publication Date |
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| CN212063617U true CN212063617U (en) | 2020-12-01 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202020894266.6U Active CN212063617U (en) | 2020-05-25 | 2020-05-25 | Power-off protection circuit of magnetic bearing control system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113571347A (en) * | 2021-07-28 | 2021-10-29 | 江西科旺科技有限公司 | Integrated voltage stabilizing and transforming power supply |
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2020
- 2020-05-25 CN CN202020894266.6U patent/CN212063617U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113571347A (en) * | 2021-07-28 | 2021-10-29 | 江西科旺科技有限公司 | Integrated voltage stabilizing and transforming power supply |
| CN113571347B (en) * | 2021-07-28 | 2023-11-17 | 江西科旺科技有限公司 | Integral type steady voltage transformation power |
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