CN117889149B - UPS-free magnetic suspension bearing control method, system, equipment and storage medium - Google Patents
UPS-free magnetic suspension bearing control method, system, equipment and storage medium Download PDFInfo
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Abstract
The application relates to the technical field of UPS-free magnetic suspension bearing control, and discloses a UPS-free magnetic suspension bearing control method, a UPS-free magnetic suspension bearing control system, UPS-free magnetic suspension bearing control equipment and a UPS-free magnetic suspension bearing storage medium. The method comprises the following steps: respectively carrying out state detection on a first power supply and a second power supply in the UPS-free magnetic suspension bearing control system to obtain first state information of the first power supply and second state information of the second power supply; if the first state information and the second state information are normal, the UPS-free magnetic suspension bearing control system is powered; if the first state information is abnormal and the second state information is normal, power is supplied through the second power supply; if the first state information is normal and the second state information is abnormal, power is supplied through the frequency converter; if the first state information and the second state information are abnormal, a power-off constant voltage algorithm is adopted to supply power, so that the cost of the UPS is saved, and the reliability and the safety of the system are improved.
Description
Technical Field
The application relates to the technical field of UPS-free magnetic suspension bearing control, in particular to a UPS-free magnetic suspension bearing control method, a UPS-free magnetic suspension bearing control system, UPS-free magnetic suspension bearing control equipment and a UPS-free magnetic suspension bearing storage medium.
Background
The existing high-speed magnetic suspension bearing controller adopts an alternating current 220V power supply to supply power, and the direct current required by the magnetic suspension bearing controller is obtained through an AC/DC converter. The magnetic suspension bearing controller plays a decisive role in the safe and reliable operation of the whole system, so that the stability of a power supply is also required to be high. In order to prevent unexpected abnormal power failure on site, a UPS power supply needs to be added at the front end of the magnetic levitation power supply to ensure that the system is not affected by the power failure. As shown in FIG. 1, FIG. 1 is a wiring diagram of a magnetic suspension bearing control system with UPS.
In a high-speed magnetic suspension motor, the cost of a magnetic suspension bearing is relatively high, and the power supply requirement of a suspension controller in a magnetic suspension system is extremely high in reliability. The suspension bearing running at high speed can drop under the high-speed running state of the bearing due to the power failure of the suspension controller, so that the bearing is damaged, and the bearing is broken when serious. The problem can be overcome by using the UPS to supply power to the suspension controller, but the reliability of the UPS is not high, and the service life of a UPS battery is short, so that the subsequent maintenance cost is high. Because the UPS contains the storage battery, and the storage battery is easy to explode, the application environment of the UPS is greatly limited. It cannot be used in high temperature (temperature rise, life is rapidly reduced), inflammable and explosive situations. UPS's can cause severe safety accidents such as explosions and fires in the field if maintained and serviced at irregular intervals. There are still many applications for current magnetic levitation motor control systems with UPS.
Disclosure of Invention
The application provides a UPS-free magnetic suspension bearing control method, a system, equipment and a storage medium, thereby saving the cost of a UPS power supply and improving the reliability and the safety of the system.
The first aspect of the application provides a UPS-free magnetic suspension bearing control method, which comprises the following steps:
Respectively carrying out state detection on a first power supply and a second power supply in a UPS-free magnetic suspension bearing control system to obtain first state information of the first power supply and second state information of the second power supply;
If the first state information and the second state information are normal, the UPS-free magnetic suspension bearing control system is powered according to a preset power supply priority, and the power supply priority is as follows: the frequency converter is larger than the second power supply and larger than the first power supply;
If the first state information is abnormal and the second state information is normal, supplying power to the UPS-free magnetic suspension bearing control system through the second power supply;
If the first state information is normal and the second state information is abnormal, supplying power to the UPS-free magnetic suspension bearing control system through the frequency converter;
And if the first state information and the second state information are abnormal, switching a motor in the UPS-free magnetic suspension bearing control system from an electric mode to a power generation mode by adopting a preset power-off constant voltage algorithm, and keeping the bus voltage of the frequency converter at a target voltage value so as to supply power to the UPS-free magnetic suspension bearing control system.
The second aspect of the present application provides a UPS-free magnetic suspension bearing control system, including:
the detection module is used for respectively carrying out state detection on a first power supply and a second power supply in the UPS-free magnetic suspension bearing control system to obtain first state information of the first power supply and second state information of the second power supply;
the first power supply module is configured to supply power to the UPS-free magnetic suspension bearing control system according to a preset power supply priority if the first state information and the second state information are both normal, where the power supply priority is: the frequency converter is larger than the second power supply and larger than the first power supply;
the second power supply module is used for supplying power to the UPS-free magnetic suspension bearing control system through the second power supply if the first state information is abnormal and the second state information is normal;
the third power supply module is used for supplying power to the UPS-free magnetic suspension bearing control system through the frequency converter if the first state information is normal and the second state information is abnormal;
and the fourth power supply module is used for switching a motor in the UPS-free magnetic suspension bearing control system from an electric mode to a power generation mode by adopting a preset power-off constant voltage algorithm if the first state information and the second state information are abnormal, and keeping the bus voltage of the frequency converter at a target voltage value so as to supply power to the UPS-free magnetic suspension bearing control system.
A third aspect of the present application provides a UPS-free magnetic bearing control apparatus, comprising: a memory and at least one processor, the memory having instructions stored therein; the at least one processor invokes the instructions in the memory to cause the UPS-less magnetic bearing control apparatus to perform the UPS-less magnetic bearing control method described above.
A fourth aspect of the application provides a computer readable storage medium having instructions stored therein which, when run on a computer, cause the computer to perform the UPS-less magnetic bearing control method described above.
In the technical scheme provided by the application, the first power supply and the second power supply in the UPS-free magnetic suspension bearing control system are respectively subjected to state detection to obtain the first state information of the first power supply and the second state information of the second power supply; if the first state information and the second state information are normal, the UPS-free magnetic suspension bearing control system is powered; if the first state information is abnormal and the second state information is normal, power is supplied through the second power supply; if the first state information is normal and the second state information is abnormal, power is supplied through the frequency converter; if the first state information and the second state information are abnormal, power is supplied by adopting a power-off constant-voltage algorithm, and when the power supply of the system is normal, power is supplied by a power grid power supply; when the power supply of the system is abnormal, the frequency converter supplies power, and the frequency converter adopts a special algorithm to enable the motor to work in a power generation state so as to ensure the power consumption requirement of the system, thereby saving the cost of the UPS power supply and improving the reliability and the safety of the system.
Drawings
FIG. 1 is a wiring diagram of a magnetic suspension bearing control system with a UPS in an embodiment of the application;
FIG. 2 is a schematic diagram of an embodiment of a UPS-free magnetic bearing control method according to an embodiment of the present application;
FIG. 3 is a wiring diagram of a UPS-free magnetic bearing control system in an embodiment of the application;
FIG. 4 is a flowchart of a power outage operation of a UPS-free magnetic bearing control system according to an embodiment of the present application;
FIG. 5 is a block diagram of an interrupt constant voltage FM control in accordance with an embodiment of the present application;
FIG. 6 is a schematic diagram of an embodiment of a UPS-free magnetic bearing control system according to an embodiment of the present application.
Detailed Description
The embodiment of the application provides a UPS-free magnetic suspension bearing control method, a system, equipment and a storage medium, thereby saving the cost of a UPS power supply and improving the reliability and safety of the system.
The terms "first," "second," "third," "fourth" and the like in the description and in the claims and in the above drawings, if any, are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used may be interchanged where appropriate such that the embodiments described herein may be implemented in other sequences than those illustrated or otherwise described herein. Furthermore, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed or inherent to such process, method, article, or apparatus.
For ease of understanding, a specific flow of an embodiment of the present application is described below with reference to fig. 2, where an embodiment of a UPS-less magnetic bearing control method according to the embodiment of the present application includes:
Step 101, respectively carrying out state detection on a first power supply and a second power supply in a UPS-free magnetic suspension bearing control system to obtain first state information of the first power supply and second state information of the second power supply;
it is to be understood that the execution body of the present application may be a UPS-free magnetic suspension bearing control system, and may also be a terminal or a server, which is not limited herein. The embodiment of the application is described by taking a server as an execution main body as an example.
Step 102, if the first state information and the second state information are both normal, powering the UPS-free magnetic suspension bearing control system according to a preset power supply priority, wherein the power supply priority is as follows: the frequency converter is larger than the second power supply and larger than the first power supply;
step 103, if the first state information is abnormal and the second state information is normal, supplying power to the UPS-free magnetic suspension bearing control system through a second power supply;
104, if the first state information is normal and the second state information is abnormal, supplying power to the UPS-free magnetic suspension bearing control system through the frequency converter;
And 105, if the first state information and the second state information are abnormal, switching a motor in the UPS-free magnetic suspension bearing control system from an electric mode to a power generation mode by adopting a preset power-off constant-voltage algorithm, and keeping the bus voltage of the frequency converter at a target voltage value so as to supply power to the UPS-free magnetic suspension bearing control system.
In the embodiment of the application, the state detection is respectively carried out on a first power supply and a second power supply in a UPS-free magnetic suspension bearing control system, so as to obtain the first state information of the first power supply and the second state information of the second power supply; if the first state information and the second state information are normal, the UPS-free magnetic suspension bearing control system is powered; if the first state information is abnormal and the second state information is normal, power is supplied through the second power supply; if the first state information is normal and the second state information is abnormal, power is supplied through the frequency converter; if the first state information and the second state information are abnormal, power is supplied by adopting a power-off constant-voltage algorithm, and when the power supply of the system is normal, power is supplied by a power grid power supply; when the power supply of the system is abnormal, the frequency converter supplies power, and the frequency converter adopts a special algorithm to enable the motor to work in a power generation state so as to ensure the power consumption requirement of the system, thereby saving the cost of the UPS power supply and improving the reliability and the safety of the system.
In a specific embodiment, the process of executing step 105 may specifically include the following steps:
(1) If the first state information and the second state information are abnormal, judging whether the bus voltage of the frequency converter is lower than a target voltage value by adopting a preset power-off constant voltage algorithm;
(2) If the bus voltage is lower than the target voltage value, switching the motor in the UPS-free magnetic suspension bearing control system from an electric mode to a power generation mode, and if the bus voltage is not lower than the target voltage value, determining that the motor works in an electric state;
(3) Calculating the adjusting frequency output by a preset frequency modulation controller, wherein the frequency modulation controller is a PI controller;
(4) Based on the regulation frequency, the operation frequency of the motor is reduced, and whether the bus voltage is recovered to a normal value is judged;
(5) And if the busbar voltage is recovered to a normal value, determining that the motor works in an electric state, and supplying power to the UPS-free magnetic suspension bearing control system.
Specifically, as shown in fig. 3, fig. 3 is a wiring diagram of a UPS-free magnetic suspension bearing control system.
In one embodiment, the first power source is a 380V power source and the second power source is a 220V power source.
In one embodiment, the target voltage value is 430V.
In a specific embodiment, calculating the adjustment frequency of the output of the preset fm controller, where the fm controller is a PI controller, includes:
Calculating the adjusting frequency output by a preset frequency modulation controller through a preset output frequency calculating function, wherein the frequency modulation controller is a PI controller, and the output frequency calculating function is as follows: ，/> Representing the modulation frequency of the FM controller output,/> Representing the scaling factor of a PI regulator,/>Representing the integral coefficient of the PI regulator, S representing the laplace transform operator,/>Indicating the deviation between the target bus voltage and the actual bus voltage.
In a specific embodiment, the UPS-free magnetic suspension bearing control method further includes:
acquiring the storage frequency of the frequency modulation controller before the frequency modulation controller enters the power-off constant voltage;
and performing setting frequency calculation on the adjusting frequency and the storage frequency through a preset setting frequency calculation function to obtain the setting frequency, wherein the setting frequency calculation function comprises the following steps: ，/> representing the set frequency,/> Representing the preservation frequency,/>Representing the adjustment frequency.
In one embodiment, the integral coefficient is calculated as:， Is an integral coefficient,/> Is the motor power generation torque,/>For a long time
The number of the product is the number,Representing busbar voltage,/>Intermediate frequency bandwidth,/>Is the capacity of the bus capacitor;
The calculation function of the proportionality coefficient is: 。
Specifically, when the power supply of the 380V power supply and the 220V power supply is normal, the direct current power supply of the frequency converter is preferentially used for power supply; when the 380V power supply is abnormal and the 220V power supply is normal, the 220V power supply can be used for supplying power; when the 220V power supply is abnormal and the 380V power supply is normal, the direct current power supply of the frequency converter can be used for supplying power; the most critical is how to effectively ensure that the power supply of the magnetic suspension system is still normal when the power supply of the 220V power supply and the 380V power supply are abnormal. The application not only effectively ensures the normal power supply of the magnetic suspension control system by adopting the dual-power redundancy design, but also designs a continuous and reliable power supply control algorithm when dual power supplies are abnormal. When the dual power inputs are abnormal, the frequency converter enables the motor to be switched from an electric mode to a power generation mode through a power-off constant voltage algorithm. The bus voltage of the frequency converter is kept constant at 430V through an algorithm, so that the normal power supply of a control system is ensured. When the power grid is abnormal, as shown in fig. 4, fig. 4 is a power outage work flow chart of the power grid of the UPS-free magnetic suspension bearing control system. As can be seen from fig. 4, when the power grid is abnormal, the constant voltage of the busbar of the frequency converter is ensured mainly by adjusting the running frequency of the magnetic levitation motor. The accuracy and response speed of the frequency adjustment play a key role in the control effect. The PI parameter design of the frequency regulator is particularly important.
The power-off constant-voltage frequency modulation controller is a PI controller, and the output of the power-off constant-voltage frequency modulation controller is the regulation frequency, as shown in a formula 1.1. The frequency f outputted by the frequency modulation PI regulator is linearly overlapped with the stored frequency f0 before the power-off constant voltage to obtain the set frequency f when the power-off synchronization is obtained, as shown in the formula 1.2, and the set frequency f needs to be converted into the angular frequency。
(1.1)：；
(1.2)：；
Angular frequency of actual operationRelative to a given angular frequency/>With a certain hysteresis, it can be considered that there is a first-order inertia link between them, assuming that the time constant of the inertia link is/>. As shown in formula 1.3:
(1.3)：；
according to the power balance, the power generated is equal to the power poured into the DC bus, namely There is thus a transfer function shown in equation 1.4:
(1.4)：；
Bus voltage Where C is the bus capacitance capacity. The transfer function between bus voltage and current can be obtained as shown in equation 1.5:
(1.5)：；
According to the formulas 1.1 to 1.5, a structural block diagram of the bus voltage frequency modulation control in the power-off constant voltage process can be obtained, as shown in fig. 5, and according to the formula 1.6, an open loop transfer function can be obtained according to the formula 5. In the middle of The generated torque of the motor can be calculated by the motor power and the running speed.
(1.6)：; It can be seen that equation 1.6 is a typical type II system, so that it is possible to design/>, based on the parameter tuning method of the typical type II systemAnd/>. As shown in formulas 1.7 and 1.8:
(1.7)：；
(1.8)：；
the values 1.7 and 1.8 can be determined And/>. Considering the rapidity and stability of the system response, the intermediate frequency bandwidth/>The value may be 8. As shown in formulas 1.9 and 1.10.
(1.9)：；
(1.10)：；
Wherein,For the driver bus voltage,/>Is the proportionality coefficient of PI regulator,/>Is the integral coefficient of the PI regulator. The system of the application can save a UPS power supply and save cost; the application does not need a battery, and effectively improves the reliability and the safety of the system; the UPS in the original scheme can only supply power to the magnetic suspension controller, and the phenomenon that the system PLC and the man-machine interface cannot work when the power grid is powered off can occur.
The method for controlling the UPS-free magnetic suspension bearing in the embodiment of the present application is described above, and the UPS-free magnetic suspension bearing control system in the embodiment of the present application is described below, referring to fig. 6, where one embodiment of the UPS-free magnetic suspension bearing control system in the embodiment of the present application includes:
The detection module is used for respectively carrying out state detection on a first power supply and a second power supply in the UPS-free magnetic suspension bearing control system to obtain first state information of the first power supply and second state information of the second power supply;
The first power supply module is used for supplying power to the UPS-free magnetic suspension bearing control system according to a preset power supply priority if the first state information and the second state information are normal, wherein the power supply priority is as follows: the frequency converter is larger than the second power supply and larger than the first power supply;
The second power supply module is used for supplying power to the UPS-free magnetic suspension bearing control system through a second power supply if the first state information is abnormal and the second state information is normal;
The third power supply module is used for supplying power to the UPS-free magnetic suspension bearing control system through the frequency converter if the first state information is normal and the second state information is abnormal;
And the fourth power supply module is used for switching the motor in the UPS-free magnetic suspension bearing control system from an electric mode to a power generation mode by adopting a preset power-off constant-voltage algorithm if the first state information and the second state information are abnormal, and keeping the bus voltage of the frequency converter at a target voltage value so as to supply power to the UPS-free magnetic suspension bearing control system.
Through the cooperative cooperation of the components, the state detection is carried out on a first power supply and a second power supply in the UPS-free magnetic suspension bearing control system respectively, so that first state information of the first power supply and second state information of the second power supply are obtained; if the first state information and the second state information are normal, the UPS-free magnetic suspension bearing control system is powered; if the first state information is abnormal and the second state information is normal, power is supplied through the second power supply; if the first state information is normal and the second state information is abnormal, power is supplied through the frequency converter; if the first state information and the second state information are abnormal, power is supplied by adopting a power-off constant-voltage algorithm, and when the power supply of the system is normal, power is supplied by a power grid power supply; when the power supply of the system is abnormal, the frequency converter supplies power, and the frequency converter adopts a special algorithm to enable the motor to work in a power generation state so as to ensure the power consumption requirement of the system, thereby saving the cost of the UPS power supply and improving the reliability and the safety of the system.
The application also provides a UPS-free magnetic suspension bearing control device, which comprises a memory and a processor, wherein the memory stores computer readable instructions, and the computer readable instructions, when executed by the processor, cause the processor to execute the steps of the UPS-free magnetic suspension bearing control method in the above embodiments.
The present application also provides a computer readable storage medium, which may be a non-volatile computer readable storage medium, and may also be a volatile computer readable storage medium, where instructions are stored in the computer readable storage medium, when the instructions are executed on a computer, cause the computer to perform the steps of the UPS-less magnetic suspension bearing control method.
It will be clearly understood by those skilled in the art that, for convenience and brevity of description, the specific working processes of the above-described systems, systems and units may refer to the corresponding processes in the foregoing method embodiments, which are not repeated herein.
The integrated units, if implemented in the form of software functional units and sold or used as stand-alone products, may be stored in a computer readable storage medium. Based on such understanding, the technical solution of the present application may be embodied essentially or in part or all of the technical solution or in part in the form of a software product stored in a storage medium, including instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) to perform all or part of the steps of the method according to the embodiments of the present application. And the aforementioned storage medium includes: a U-disk, a removable hard disk, a read-only memory (ROM), a random access memory (random access memory, RAM), a magnetic disk, or an optical disk, or other various media capable of storing program codes.
The above embodiments are only for illustrating the technical solution of the present application, and not for limiting the same; although the application has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present application.
Claims (8)
1. The UPS-free magnetic suspension bearing control method is characterized by comprising the following steps of:
respectively carrying out state detection on a first power supply and a second power supply in a UPS-free magnetic suspension bearing control system to obtain first state information of the first power supply and second state information of the second power supply;
If the first state information and the second state information are normal, the UPS-free magnetic suspension bearing control system is powered according to a preset power supply priority, and the power supply priority is as follows: the frequency converter is larger than the second power supply and larger than the first power supply;
If the first state information is abnormal and the second state information is normal, supplying power to the UPS-free magnetic suspension bearing control system through the second power supply;
If the first state information is normal and the second state information is abnormal, supplying power to the UPS-free magnetic suspension bearing control system through the frequency converter;
If the first state information and the second state information are abnormal, a preset power-off constant voltage algorithm is adopted to switch a motor in the UPS-free magnetic suspension bearing control system from an electric mode to a power generation mode, and the bus voltage of the frequency converter is kept at a target voltage value so as to supply power to the UPS-free magnetic suspension bearing control system; the method specifically comprises the following steps: if the first state information and the second state information are abnormal, judging whether the bus voltage of the frequency converter is lower than a target voltage value by adopting a preset power-off constant voltage algorithm; if the bus voltage is lower than a target voltage value, switching a motor in the UPS-free magnetic suspension bearing control system from an electric mode to a power generation mode, and if the bus voltage is not lower than the target voltage value, determining that the motor works in an electric state; calculating the adjusting frequency output by a preset frequency modulation controller through a preset output frequency calculating function, wherein the frequency modulation controller is a PI controller, and the output frequency calculating function is as follows: ，/> Representing the modulation frequency of the FM controller output,/> Representing the scaling factor of a PI regulator,/>Representing the integral coefficient of the PI regulator,/>Representing Laplace transform operator,/>Representing a deviation between the target bus voltage and the actual bus voltage; based on the adjusting frequency, the operating frequency of the motor is reduced, and whether the bus voltage is recovered to a normal value is judged; and if the busbar voltage is recovered to a normal value, determining that the motor works in an electric state, and supplying power to the UPS-free magnetic suspension bearing control system.
2. The UPS-less magnetic bearing control method of claim 1, wherein the first power source is a 380V power source and the second power source is a 220V power source.
3. The UPS-less magnetic bearing control method of claim 1, wherein the target voltage value is 430V.
4. The UPS-less magnetic bearing control method according to claim 1, further comprising:
acquiring the storage frequency of the frequency modulation controller before the frequency modulation controller enters a power-off constant voltage;
And calculating the set frequency of the adjusting frequency and the stored frequency through a preset set frequency calculation function to obtain the set frequency, wherein the set frequency calculation function comprises the following steps: ，/> representing the set frequency,/> Representing the preservation frequency,/>Representing the adjustment frequency.
5. The UPS-less magnetic bearing control method of claim 1, wherein the integral coefficient is calculated as a function of:，/> Is an integral coefficient,/> Representing the motor generating torque,/>Is a time constant,/>Representing busbar voltage,/>Representing intermediate frequency bandwidth,/>Representing the capacity of the bus capacitor;
The calculation function of the proportionality coefficient is as follows: 。
6. a UPS-less magnetic bearing control system, the UPS-less magnetic bearing control system comprising:
The detection module is used for respectively carrying out state detection on a first power supply and a second power supply in the UPS-free magnetic suspension bearing control system to obtain first state information of the first power supply and second state information of the second power supply;
the first power supply module is configured to supply power to the UPS-free magnetic suspension bearing control system according to a preset power supply priority if the first state information and the second state information are both normal, where the power supply priority is: the frequency converter is larger than the second power supply and larger than the first power supply;
the second power supply module is used for supplying power to the UPS-free magnetic suspension bearing control system through the second power supply if the first state information is abnormal and the second state information is normal;
the third power supply module is used for supplying power to the UPS-free magnetic suspension bearing control system through the frequency converter if the first state information is normal and the second state information is abnormal;
The fourth power supply module is used for switching a motor in the UPS-free magnetic suspension bearing control system from an electric mode to a power generation mode by adopting a preset power-off constant voltage algorithm if the first state information and the second state information are abnormal, and keeping the bus voltage of the frequency converter at a target voltage value so as to supply power to the UPS-free magnetic suspension bearing control system; the method specifically comprises the following steps: if the first state information and the second state information are abnormal, judging whether the bus voltage of the frequency converter is lower than a target voltage value by adopting a preset power-off constant voltage algorithm; if the bus voltage is lower than a target voltage value, switching a motor in the UPS-free magnetic suspension bearing control system from an electric mode to a power generation mode, and if the bus voltage is not lower than the target voltage value, determining that the motor works in an electric state; calculating the adjusting frequency output by a preset frequency modulation controller through a preset output frequency calculating function, wherein the frequency modulation controller is a PI controller, and the output frequency calculating function is as follows: ，/> Representing the modulation frequency of the FM controller output,/> Representing the scaling factor of a PI regulator,/>Representing the integral coefficient of the PI regulator,/>Representing Laplace transform operator,/>Representing a deviation between the target bus voltage and the actual bus voltage; based on the adjusting frequency, the operating frequency of the motor is reduced, and whether the bus voltage is recovered to a normal value is judged; and if the busbar voltage is recovered to a normal value, determining that the motor works in an electric state, and supplying power to the UPS-free magnetic suspension bearing control system.
7. A UPS-less magnetic bearing control apparatus, the UPS-less magnetic bearing control apparatus comprising: a memory and at least one processor, the memory having instructions stored therein;
The at least one processor invoking the instructions in the memory to cause the UPS-less magnetic bearing control apparatus to perform the UPS-less magnetic bearing control method of any of claims 1-5.
8. A computer readable storage medium having instructions stored thereon, which when executed by a processor, implement the UPS-less magnetic bearing control method of any of claims 1-5.
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| WO2022121332A1 (en) * | 2020-12-11 | 2022-06-16 | 珠海格力电器股份有限公司 | Power supply control device and method for bearing controller, and magnetic suspension system |
| CN116317327A (en) * | 2023-05-15 | 2023-06-23 | 湖南大学 | Lunar base energy storage and power supply system and control method thereof |
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| CN110417334A (en) * | 2019-07-30 | 2019-11-05 | 东北大学 | A kind of kinetic energy back voltage interruption protection system and method for magnetic suspension bearing |
| CN111954439A (en) * | 2020-07-17 | 2020-11-17 | 珠海格力电器股份有限公司 | Cooling device, cooling method, magnetic suspension bearing system and air conditioning unit |
| CN112039190A (en) * | 2020-07-27 | 2020-12-04 | 珠海格力电器股份有限公司 | Power supply control device and method of magnetic suspension system and magnetic suspension system |
| CN112152185A (en) * | 2020-10-20 | 2020-12-29 | 珠海格力电器股份有限公司 | Power supply control device and method of magnetic suspension system and magnetic suspension system |
| WO2022121332A1 (en) * | 2020-12-11 | 2022-06-16 | 珠海格力电器股份有限公司 | Power supply control device and method for bearing controller, and magnetic suspension system |
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