CN116111714A - Uninterruptible power supply, control method and device thereof and readable medium - Google Patents
Uninterruptible power supply, control method and device thereof and readable medium Download PDFInfo
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- CN116111714A CN116111714A CN202310376406.9A CN202310376406A CN116111714A CN 116111714 A CN116111714 A CN 116111714A CN 202310376406 A CN202310376406 A CN 202310376406A CN 116111714 A CN116111714 A CN 116111714A
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J9/00—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting
- H02J9/04—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source
- H02J9/06—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source with automatic change-over, e.g. UPS systems
- H02J9/062—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source with automatic change-over, e.g. UPS systems for AC powered loads
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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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- Emergency Management (AREA)
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
- Stand-By Power Supply Arrangements (AREA)
Abstract
The invention provides an uninterruptible power supply, a control method, a control device and a readable medium thereof. The control method comprises the following steps: obtaining detection data, wherein the detection data comprises: input voltage of main input circuit
Maximum operating current of rectifier
Charging voltage of accumulator
Charging current of accumulator
Rectifier efficiency
Inverter efficiency
Charging efficiency of storage battery
And the actual power demand of the load
The method comprises the steps of carrying out a first treatment on the surface of the And controlling the on-off of the first static switch and the second static switch according to the detection data, and controlling the charging power of the storage battery. The invention solves the problems that: the technical scheme in the related art cannot reasonably distribute electric energy when the mains voltage is too low so as to meet the power supply requirements of the storage battery and the load.
Description
Technical Field
The invention relates to the technical field of uninterruptible power supplies, in particular to an uninterruptible power supply, a control method and device thereof and a readable medium.
Background
The uninterrupted power supply is an energy storage device, which uses a rectifier, an inverter and a storage battery as main components and is mainly used for providing uninterrupted power supply for equipment with high requirements on power stability. When the mains supply is normally input, the uninterruptible power supply is used for stabilizing the voltage of the mains supply and supplying the stabilized voltage to a load, and the uninterruptible power supply is an alternating current type voltage stabilizer and charges an internal storage battery; when the commercial power is interrupted, the uninterrupted power supply immediately supplies 220V alternating current to the load by using the method of switching and converting of the inverter, so that the load keeps working normally and soft and hardware of the load are protected from damage.
When the mains voltage is too low and the load power is large, the input current of the uninterruptible power supply is increased to meet the power requirements of the storage battery and the load, and the increased input current possibly exceeds the maximum working current allowed by the internal components of the uninterruptible power supply, so that potential safety hazards are caused; in the prior art, the input current is reduced by a method for reducing the working current of the storage battery, but the method can lead the working power of the storage battery to be too low, so that the electricity storage quantity of the storage battery is in an unsaturated state, and the reliability of the uninterruptible power supply is reduced.
As can be seen, the problems in the related art are: the technical scheme in the related art cannot reasonably distribute electric energy when the mains voltage is too low so as to meet the power supply requirements of the storage battery and the load.
Disclosure of Invention
The invention solves the problems that: the technical scheme in the related art cannot reasonably distribute electric energy when the mains voltage is too low so as to meet the power supply requirements of the storage battery and the load.
In order to solve the above problems, a first object of the present invention is to provide a control method of an uninterruptible power supply with a split control logic for controlling on/off of an output port.
The second object of the present invention is to provide a control device for uninterruptible power supply with a sub-control logic for controlling on-off of an output port.
A third object of the present invention is to provide an uninterruptible power supply.
A fourth object of the present invention is to provide a readable storage medium.
To achieve the first object of the present invention, an embodiment of the present invention provides a control method of an uninterruptible power supply having a sub-control logic to control on/off of an output port, the uninterruptible power supply including: a main input circuit, the main input circuit comprising: the main input circuit is connected with a load through the first static switch; a bypass input circuit, the bypass input circuit comprising: the bypass input circuit is connected with the load through the second static switch;
the control method comprises the following steps:
s100: obtaining detection data, wherein the detection data comprises: input voltage of main input circuit
Maximum operating current of rectifier->
Battery charging voltage->
Battery charging current->
Rectifier efficiency->
Inverter efficiency->
Battery charging efficiency->
And load actual demand power +.>
；
S200: and controlling the on-off of the first static switch and the second static switch according to the detection data, and controlling the charging power of the storage battery.
Compared with the prior art, the technical effect achieved by adopting the technical scheme is as follows: the method of the invention performs judgment control by acquiring detection data, wherein the detection data comprises input voltage of a main input circuit
Battery charging efficiency->
And load actual demand power +.>
Real-time data are obtained, so that the working states of the uninterrupted power supply and the load can be controlled more accurately, the on-off of the first static switch and the second static switch and the charging power of the storage battery are controlled accurately, and the power supply requirements of the storage battery and the load are met.
In one embodiment of the present invention, S200 includes:
s210: according to the input voltage of the main input circuit
Maximum operating current of rectifier->
Rectifier efficiency->
Inverter efficiency->
Battery charging efficiency->
And load actual demand power +.>
Determining a maximum allowable power of a first storage battery
S220: according to the input voltage of the main input circuit
Maximum operating current of rectifier->
Rectifier efficiency->
And battery charging efficiency->
Determining the maximum permissible power of the second accumulator +.>
；
S230: according to the input voltage of the main input circuit
Maximum operating current of rectifier->
Rectifier efficiency->
And inverter efficiency->
Determining the maximum output power of the main input circuit>
；
S240: according to the charge voltage of the accumulator
And battery charging current->
Determining the real-time power of the storage battery>
；
S250: maximum output power of main input circuit
And load actual demand power->
Comparing the sizes;
s260: when (when)
＜
When the control circuit is used, the first static switch is controlled to be closed, the second static switch is controlled to be opened, the main input circuit supplies power for the storage battery, the bypass input circuit supplies power for the load, and the control circuit controls the bypass input circuit to supply power for the load according to the real-time power of the storage battery +.>
And a second battery maximum allowable power
Controlling the charging power of the storage battery;
s270: when (when)
≥
In time, according to the real-time power of the storage battery>
And the first battery maximum allowable power +.>
And controlling the on-off of the first static switch and the second static switch, and controlling the charging power of the storage battery.
Compared with the prior art, the technical effect achieved by adopting the technical scheme is as follows: the method of the embodiment is based on the maximum output power of the main input circuit
And load actual demand power +.>
Preliminary control of the first and second static switch is performed when +.>
＜
When the main input circuit is not able to meet the power supply requirement of the load, and is therefore connected to the load by a bypass input circuit capable of providing higher power, the main input circuit is used for supplying power to the battery, and when + ->
≥
When the power supply device is used, the main input circuit can meet the power supply requirement of a load, so that the main input circuit can directly supply power to the storage battery and the load, and further the power supply distribution efficiency of the uninterruptible power supply is effectively improved.
In one embodiment of the present invention, S260 includes:
s261: when (when)
＞
In this case, the charging power of the battery is controlled to be reduced until +.>
=
；/>
S262: when (when)
≤
And when the charging power of the storage battery is controlled to be unchanged.
Compared with the prior art, the technical effect achieved by adopting the technical scheme is as follows: when (when)
＞
When the power supply system is used, the condition that the working current of the rectifier is too high can occur, at the moment, the problem can be solved by controlling the charging power of the storage battery to be reduced, the power supply requirement of a load is met, and the potential safety hazard in the uninterrupted power supply is avoided.
In one embodiment of the present invention, S270 includes:
s271: controlling the charging power of the storage battery to make the power obtained by the load be the actual required power of the load
；
S272: when (when)
＞
When the charging power of the storage battery is controlled to be reduced to +.>
=
According to rated charging power of accumulator>
And the first battery maximum allowable power +.>
Controlling the on-off of the first static switch and the second static switch;
s273: when (when)
≤
When the charging device is in use, the first static switch is controlled to be turned on, the second static switch is controlled to be turned off, the main input circuit supplies power to the storage battery and the load, and the charging power of the storage battery is controlled to be unchanged.
Compared with the prior art, the technical effect achieved by adopting the technical scheme is as follows: the method of the embodiment is that
≥
In the case of (2) according to the real-time power of the accumulator>
And the first battery maximum allowable power +.>
The on-off of the first static switch and the second static switch is controlled, and the charging power of the storage battery is controlled; on one hand, the power supply requirement of the load is met, on the other hand, the charging requirement of the storage battery is also met, and the situation that the storage battery is in an unsaturated state for a long time when the mains voltage fluctuates is avoided.
In one embodiment of the present invention, S272 includes:
when (when)
When the first static switch is controlled to be closed and the second static switch is controlled to be opened, the main input circuit supplies power for the storage battery, the bypass input circuit supplies power for the load, and the power of the storage battery is controlled to be not more than +.>
；
When (when)
When the first static switch is controlled to be opened, the second static switch is controlled to be closed, and the main input circuit supplies power for the storage battery and the load;
wherein ,
and the charging coefficient of the storage battery.
Compared with the prior art, the technical effect achieved by adopting the technical scheme is as follows: the method of the embodiment further considers whether the main input circuit can meet the power supply requirements of the load and the storage battery at the same time, and under the condition that the main input circuit does not meet the power supply requirements of the load and the storage battery, the control method of the embodiment of the invention can timely switch the on-off of the first static switch and the second static switch so as to meet the power supply requirements of the load and the storage battery.
To achieve the second object of the present invention, an embodiment of the present invention provides a control device for an uninterruptible power supply having a sub-control logic for controlling on/off of an output port, the uninterruptible power supply including: a main input circuit, the main input circuit comprising: the main input circuit is connected with a load through the first static switch; a bypass input circuit, the bypass input circuit comprising: the bypass input circuit is connected with the load through the second static switch;
the control device comprises:
the detection module is used for acquiring detection data, and the detection data comprises: input voltage of main input circuit
Maximum operating current of rectifier->
Battery charging voltage->
Battery charging current->
Rectifier efficiency->
Inverter efficiency->
Battery charging efficiency->
And load actual demand power +.>
；
And the control module is used for controlling the on-off of the first static switch and the second static switch according to the detection data and controlling the charging power of the storage battery.
The control device according to the embodiment of the present invention implements the steps of the control method of the uninterruptible power supply according to any embodiment of the present invention, so that the control device has all the advantages of the control method of the uninterruptible power supply according to any embodiment of the present invention, and is not described herein.
To achieve the third object of the present invention, an embodiment of the present invention provides an uninterruptible power supply including: a processor, a memory, and a program or instructions stored in the memory and executable on the processor, which when executed by the processor, implement the steps of a method of controlling an uninterruptible power supply as in any of the embodiments of the invention.
The uninterruptible power supply according to the embodiment of the invention realizes the steps of the control method of the uninterruptible power supply according to any embodiment of the invention, so that the uninterruptible power supply has all the beneficial effects of the control method of the uninterruptible power supply according to any embodiment of the invention, and the detailed description is omitted.
To achieve the fourth object of the present invention, an embodiment of the present invention provides a readable storage medium having stored thereon a program or instructions which, when executed by a processor, implement the steps of the method for controlling an uninterruptible power supply according to any of the embodiments of the present invention.
The readable storage medium according to the embodiment of the present invention implements the steps of the control method of the uninterruptible power supply according to any embodiment of the present invention, so that the method of the uninterruptible power supply according to any embodiment of the present invention has all the advantages, and is not described herein.
Drawings
FIG. 1 is a flow chart of steps of a method for controlling an uninterruptible power supply according to some embodiments of the invention;
fig. 2 is a schematic structural diagram of an uninterruptible power supply according to some embodiments of the invention.
Reference numerals illustrate:
100-a main input circuit; 200-bypass input circuit.
Detailed Description
In order that the above objects, features and advantages of the invention will be readily understood, a more particular description of the invention will be rendered by reference to specific embodiments thereof which are illustrated in the appended drawings.
Referring to fig. 1 and 2, the present embodiment provides a control method of an uninterruptible power supply with a sub-control logic for controlling on-off of an output port, where the uninterruptible power supply includes:
a main input circuit 100, the main input circuit 100 comprising: the rectifier, inverter, battery and first static switch through which the main input circuit 100 is connected to the load;
the bypass input circuit 200, the bypass input circuit 200 includes: a second static switch through which the bypass input circuit 200 is connected to the load;
the control method comprises the following steps:
s100: obtaining detection data, wherein the detection data comprises: the main input circuit 100 inputs a voltage
Maximum operating current of rectifier->
Battery charging voltage->
Battery charging current->
Rectifier efficiency->
Inverter efficiency->
Battery charging efficiency->
And load actual demand power +.>
；
S200: and controlling the on-off of the first static switch and the second static switch according to the detection data, and controlling the charging power of the storage battery.
In this embodiment, the uninterruptible power supply includes a main input circuit 100 and a bypass input circuit 200; the main input circuit 100 stabilizes the commercial power and supplies the commercial power to the load for use, and the main input circuit 100 is an alternating current type electric stabilizer and charges a storage battery at the same time; when the mains supply is interrupted (accident power failure), the main input circuit 100 immediately supplies 220V alternating current to the load by using an inverter switching method, so that the load keeps working normally and the software and hardware of the load are protected from damage; when the ups is required to perform periodic maintenance or the overload time exceeds the output capability of the inverter, or when the ups fails, the load needs to be connected to the bypass input circuit 200, and the bypass input circuit 200 can isolate the inverter and provide a direct AC bypass power supply; the static switch is also called a static switch, and is an alternating current switch formed by reversely connecting two Silicon Controlled Rectifiers (SCRs) in parallel, the closing and the opening of the alternating current switch are controlled by a logic controller, and the static switch can cut off the power output with faults in the uninterrupted power supply, so that the main input circuit 100 and the bypass input circuit 200 in the commercial power can be switched without interruption.
Further, in S100, the detection data are obtained from the parameter data of the sensor or the sampling circuit or the uninterruptible power supply itself; the main input circuit 100 inputs a voltage
Refers to the input voltage of the rectifier, which is the mains input voltage and may fluctuate; maximum operating current of rectifier->
Refers to the maximum current at which the rectifier safely operates; battery charging voltage->
The charging voltage measured by the storage battery in real time is referred to; charging current of the accumulator>
The charging current measured by the storage battery in real time is referred to; rectifier efficiency->
Inverter efficiency->
And battery charging efficiency->
Obtaining parameter data of the uninterruptible power supply; load actual demand power +.>
Refers to the rated power of a load, which is connected with an uninterruptible power supply.
Further, in S200, according to the detection data, the on-off of the first static switch and the second static switch is controlled, and the charging power of the storage battery is controlled, so as to meet the power supply requirements of the storage battery and the load.
In the control method of the present invention, the on-off control of the first static switch and the second static switch and the control of the power of the storage battery are controlled by a controller disposed inside the uninterruptible power supply, and the specific control method is the prior art and will not be described here.
It will be appreciated that the method of the present invention performs the judgment control by acquiring detection data including the input voltage of the main input circuit 100
Battery charging efficiency->
And load actual demand power +.>
Real-time data are obtained, so that the working states of the uninterrupted power supply and the load can be controlled more accurately, the on-off of the first static switch and the second static switch and the charging power of the storage battery are controlled accurately, and the power supply requirements of the storage battery and the load are met.
Further, in a specific embodiment, S200 includes:
s210: according to the input voltage of the main input circuit 100
Maximum operating current of rectifier->
Rectifier efficiency->
Inverter efficiency->
Battery charging efficiency->
And load actual demand power +.>
Determining the maximum permissible power of the first accumulator +.>
；
S220: according to the input voltage of the main input circuit 100
Maximum operating current of rectifier->
Rectifier efficiency->
And battery charging efficiency->
Determining the maximum permissible power of the second accumulator +.>
；
S230: according to the input voltage of the main input circuit 100
Maximum operating current of rectifier->
Rectifier efficiency->
And inverter efficiency->
Determining the maximum output power of the main input circuit 100 +.>
；
S240: according to the charge voltage of the accumulator
And battery charging current->
Determining the real-time power of the storage battery>
；/>
S250: maximum output power of the main input circuit 100
And load actual demand power->
Comparing the sizes;
s260: when (when)
＜
When the first static switch is controlled to be closed and the second static switch is controlled to be opened, the main input circuit 100 supplies power to the storage battery, the bypass input circuit 200 supplies power to the load, and the real-time power of the storage battery is +.>
And a second battery maximum allowable power +.>
Controlling the charging power of the storage battery;
s270: when (when)
≥
In time, according to the real-time power of the storage battery>
And the first battery maximum allowable power +.>
And controlling the on-off of the first static switch and the second static switch, and controlling the charging power of the storage battery.
Further, in S210, the main input circuit 100 inputs a voltage
Is a value that varies in real time, maximum operating current of the rectifier +.>
Rectifier efficiency->
Inverter efficiency->
Battery charging efficiency->
And load actual demand power +.>
Relatively unchanged, the input current at the main input circuit 100 is the maximum operating current of the rectifier +.>
In this case, the maximum permissible power of the battery, i.e., the maximum permissible power of the first battery, can be calculated>
The method comprises the steps of carrying out a first treatment on the surface of the When the battery power exceeds +.>
At this time, it is explained that the current of the main input circuit 100 exceeds the maximum operating current of the rectifier +.>
At this time, there is a potential safety hazard.
Further, in S220, a voltage is input according to the main input circuit 100
Maximum operating current of rectifier->
Rectifier efficiency->
And battery charging efficiency->
Determining the maximum permissible power of the second accumulator +.>
The method comprises the steps of carrying out a first treatment on the surface of the That is, when the main input circuit 100 supplies only the battery, the maximum allowable power of the battery; when the main input circuit 100 only supplies the battery and the battery power exceeds +.>
At this time, it is explained that the current of the main input circuit 100 exceeds the maximum operating current of the rectifier +.>
At this time, there is a potential safety hazard.
Further, in S230, a voltage is input according to the main input circuit 100
Maximum operating current of rectifier->
Rectifier efficiency->
And inverter efficiency->
Determining the maximum output power of the main input circuit 100 +.>
The method comprises the steps of carrying out a first treatment on the surface of the I.e. at the input voltage of the circuit +.>
When the main input circuit 100 is capable of providing maximum output power.
Further, in S240, according to the battery charging voltage
And battery charging current->
Determining the real-time power of the storage battery>
I.e. the real-time charging power of the accumulator.
Further, in S260, when
＜
When the mains supply input voltage is +.>
In the case of (1), the maximum output power of the main input circuit 100 cannot satisfy the load actual demand power +.>
Because the bypass input circuit 200 is directly connected with the load for the mains supply, and the main input circuit 100 needs to be attenuated by the efficiency of the rectifier and the inverter, the power provided by the bypass input circuit 200 is larger than the power provided by the main input circuit 100, at this time, the first static switch is controlled to be closed, the second static switch is controlled to be opened, the main input circuit 100 supplies power to the storage battery, the bypass input circuit 200 supplies power to the load, and the real-time power is based on the storage battery
And a second battery maximum allowable power +.>
Controlling the accumulatorCharging power.
Further, in S270, when
≥
When the mains supply input voltage is +.>
In the case of (1), the maximum output power of the main input circuit 100 can satisfy the load actual demand power +.>
Thus according to the real-time power of the accumulator->
And the first battery maximum allowable power +.>
And controlling the on-off of the first static switch and the second static switch, and controlling the charging power of the storage battery.
It will be appreciated that the method of the present embodiment is based on the maximum output power of the main input circuit 100
And load actual demand power +.>
Preliminary control of the first and second static switch is performed when +.>
＜
When the main input circuit 100 cannot meet the power supply requirement of the load, and thus the bypass input circuit 200 capable of providing higher power is connected with the load, the main input circuit 100 is used for supplying power to the storage battery, and when>
≥
In this case, the main input circuit 100 can meet the power supply requirement of the load, so that the main input circuit 100 can directly supply power to the storage battery and the load, and the power distribution efficiency of the uninterruptible power supply is effectively increased.
Further, in a specific embodiment, S260 includes:
s261: when (when)
＞
In this case, the charging power of the battery is controlled to be reduced until +.>
=
；
S262: when (when)
≤
And when the charging power of the storage battery is controlled to be unchanged.
Further, in S261, the first static switch is turned off, the second static switch is turned on, the main input circuit 100 supplies power to the battery, the bypass input circuit 200 supplies power to the load, and when
＞
At this time, the real-time power of the storage battery is described>
Is greater than the maximum allowable power of the second storage battery>
Therefore, there is a need for a reduction in the charge power of the battery, in particular, to reduce the charge current of the battery to reduce the charge power of the battery and thus the operating current of the rectifier, when +.>
=
When the operating current of the rectifier is +.>
。
Further, in S262, the first static switch is turned off and the second static switch is turned on, the main input circuit 100 supplies the battery, the bypass input circuit 200 supplies the load, and when
≤
At this time, the real-time power of the storage battery is described>
Less than or equal to the maximum allowable power of the second storage battery->
At this time, the operating current of the rectifier is smaller than the maximum operating current of the rectifier +.>
The charging power of the storage battery is controlled to be unchanged.
It will be appreciated that when
＞
In this case, the operating current of the rectifier is excessively high, and the power storage is controlledThe charging power of the battery is reduced, the problem can be solved, the power supply requirement of a load is met, and the potential safety hazard in the uninterrupted power supply is avoided.
Further, in a specific embodiment, S270 includes:
s271: controlling the charging power of the storage battery to make the power obtained by the load be the actual required power of the load
；
S272: when (when)
＞
When the charging power of the storage battery is controlled to be reduced to +.>
=
According to rated charging power of accumulator>
And the first battery maximum allowable power +.>
Controlling the on-off of the first static switch and the second static switch;
s273: when (when)
≤
When the first static switch is controlled to be opened and the second static switch is controlled to be closed, the main input circuit 100 supplies power to the storage battery and the load, and the charging power of the storage battery is controlled to be unchanged.
The rated charge power of the storage battery
Obtained from the relevant parameter data of the uninterruptible power supply.
Further, in S271, the charging power of the battery is controlled so that the power obtained by the load is the load actual demand power
The method comprises the steps of carrying out a first treatment on the surface of the I.e. when the main input circuit 100 inputs voltage +.>
A ripple reduction occurs and the maximum output power of the main input circuit 100 is +.>
Is greater than the actual power demand of the load>
At this time, it is explained that the main input circuit 100 can meet the power supply requirement of the load, and when the main input circuit 100 inputs the voltage +>
When the power available to the main input circuit 100 decreases, the power supply requirement of the load needs to be preferentially met, that is, the charging power of the storage battery is controlled so that the power available to the load is the actual required power of the load +.>
。
Further, in S272, when
＞
At the moment, i.e. battery real-time power->
Is greater than the maximum allowable power of the first storage battery>
Explaining thisWhen the real-time power of the storage battery is overlarge, the current passing through the rectifier is larger than the maximum working current of the rectifier +.>
It is therefore necessary to control the charging power of the battery to be reduced to +.>
=
The method comprises the steps of carrying out a first treatment on the surface of the At this time, according to the rated charge power of the storage battery->
And the first battery maximum allowable power +.>
Controlling the on-off of the first static switch and the second static switch, namely when the real-time power of the storage battery is +.>
When the power of the storage battery is reduced, the storage battery may be too low, so that the storage battery is in an unsaturated state for a long time, and to avoid this situation, whether the first static switch and the second static switch need to be controlled to be switched on or off needs to be considered according to the actual situation, so that the main input circuit 100 independently supplies power to the storage battery, and the bypass input circuit 200 independently supplies power to the load.
Further, in S273, when
≤
At the moment, i.e. battery real-time power->
Less than or equal to the maximum allowable power of the first storage battery->
The first static switch is controlled to be opened, the second static switch is controlled to be closed,the main input circuit 100 supplies power to the battery and the load, and controls the charging power of the battery to be unchanged.
It will be appreciated that the method of the present embodiment is
≥
In the case of (2) according to the real-time power of the accumulator>
And the first battery maximum allowable power +.>
The on-off of the first static switch and the second static switch is controlled, and the charging power of the storage battery is controlled; on one hand, the power supply requirement of the load is met, on the other hand, the charging requirement of the storage battery is also met, and the situation that the storage battery is in an unsaturated state for a long time when the mains voltage fluctuates is avoided.
Further, in a specific embodiment, S272 includes:
when (when)
When the first static switch is controlled to be closed and the second static switch is controlled to be opened, the main input circuit 100 supplies power to the storage battery, the bypass input circuit 200 supplies power to the load, and the power of the storage battery is controlled to be not more than +.>
；
When (when)
When the first static switch is controlled to be opened and the second static switch is controlled to be closed, the main input circuit 100 supplies power for the storage battery and the load;
wherein ,
and the charging coefficient of the storage battery.
Optionally, aThe ground is used to determine the position of the ground,
0.5-0.8.
In the present embodiment, in S272, the charging power of the battery is always controlled to be reduced due to the method of the present invention
=
Thus->
The size of the battery is the real-time charging power of the storage battery, when +.>
At this time, the real-time charging power of the battery is too low, and the main input circuit 100 cannot meet the power supply requirement of the battery while meeting the power supply requirement of the load, so that the first static switch is controlled to be turned off, the second static switch is controlled to be turned on, the main input circuit 100 supplies power to the battery, the bypass input circuit 200 supplies power to the load, and the power of the battery is controlled to be no more than->
，
For maximum permissible power of the battery in case the main input circuit 100 only supplies the battery, i.e. the second battery maximum permissible power +.>
The real-time charging power of the storage battery is not more than +.>
The safety of the rectifier can be ensured, and the real-time charging power of the storage battery does not exceed +.>
Can ensure the charging safety of the storage batteryAll-in-one; when->
At this time, it is indicated that the real-time charging power of the battery is not too low, so that the first static switch is controlled to be turned on, the second static switch is controlled to be turned off, and the main input circuit 100 supplies power to the battery and the load at the same time.
It can be appreciated that the method of the present embodiment further considers whether the main input circuit 100 can meet the power supply requirements of the load and the storage battery at the same time, and in the case of not meeting the power supply requirements of the load and the storage battery, the control method of the present invention can switch the on/off of the first static switch and the second static switch in time so as to meet the power supply requirements of the load and the storage battery.
Further, the present embodiment provides a control device of an uninterruptible power supply having a sub-control logic for controlling on-off of an output port, the uninterruptible power supply including: a main input circuit 100, the main input circuit 100 comprising: the rectifier, inverter, battery and first static switch through which the main input circuit 100 is connected to the load; the bypass input circuit 200, the bypass input circuit 200 includes: a second static switch through which the bypass input circuit 200 is connected to the load; the control device comprises:
the detection module is used for acquiring detection data, and the detection data comprises: the main input circuit 100 inputs a voltage
Maximum operating current of rectifier->
Battery charging voltage->
Battery charging current->
Rectifier efficiency->
Inverter efficiency->
Battery charging efficiency->
And load actual demand power +.>
；
And the control module is used for controlling the on-off of the first static switch and the second static switch according to the detection data and controlling the charging power of the storage battery.
The control device according to the embodiment of the present invention implements the steps of the control method of the uninterruptible power supply according to any embodiment of the present invention, so that the control device has all the advantages of the control method of the uninterruptible power supply according to any embodiment of the present invention, and is not described herein.
Further, the present embodiment provides an uninterruptible power supply, which includes: a processor, a memory, and a program or instructions stored in the memory and executable on the processor, which when executed by the processor, implement the steps of a method of controlling an uninterruptible power supply as in any of the embodiments of the invention.
The uninterruptible power supply according to the embodiment of the invention realizes the steps of the control method of the uninterruptible power supply according to any embodiment of the invention, so that the uninterruptible power supply has all the beneficial effects of the control method of the uninterruptible power supply according to any embodiment of the invention, and the detailed description is omitted.
Further, the present embodiment provides a readable storage medium, on which a program or an instruction is stored, which when executed by a processor, implements the steps of the method for controlling an uninterruptible power supply according to any of the embodiments of the present invention.
The readable storage medium according to the embodiment of the present invention implements the steps of the control method of the uninterruptible power supply according to any embodiment of the present invention, so that the method of the uninterruptible power supply according to any embodiment of the present invention has all the advantages, and is not described herein.
Although the present invention is disclosed above, the present invention is not limited thereto. Various changes and modifications may be made by one skilled in the art without departing from the spirit and scope of the invention, and the scope of the invention should be assessed accordingly to that of the appended claims.
Claims (8)
1. A control method of uninterrupted power supply with sub-control logic for controlling on-off of output port is characterized by that,
the uninterruptible power supply includes:
a primary input circuit, the primary input circuit comprising: the main input circuit is connected with a load through the first static switch;
a bypass input circuit, the bypass input circuit comprising: a second static switch through which the bypass input circuit is connected to the load;
the control method comprises the following steps:
s100: obtaining detection data, the detection data comprising: input voltage of main input circuit
Maximum operating current of rectifier->
Battery charging voltage->
Battery charging current->
Rectifier efficiency->
Inverter efficiency->
Battery charging efficiency->
And load actual demand power +.>
；
S200: and controlling the on-off of the first static switch and the second static switch according to the detection data, and controlling the charging power of the storage battery.
2. The control method according to claim 1, characterized in that S200 includes:
s210: according to the input voltage of the main input circuit
Maximum operating current of the rectifier +.>
Said rectifier efficiency->
Said inverter efficiency->
Said battery charging efficiency->
And the load actual demand power +.>
Determining the maximum permissible power of the first accumulator +.>
；
S220: according to the input voltage of the main input circuit
Maximum operating current of the rectifier +.>
Said rectifier efficiency->
And the battery charging efficiency->
Determining the maximum permissible power of the second accumulator +.>
；
S230: according to the input voltage of the main input circuit
Maximum operating current of the rectifier +.>
Said rectifier efficiency->
And the inverter efficiency->
Determining the maximum output power of the main input circuit>
；
S240: according to the charging voltage of the storage battery
And the battery charging current->
Determining the real-time power of the storage battery>
；
S250: the saidMaximum output power of main input circuit
And the actual required power of the load +.>
Comparing the sizes;
s260: when (when)
＜
When the first static switch is controlled to be closed, the second static switch is controlled to be opened, the main input circuit supplies power for the storage battery, the bypass input circuit supplies power for the load, and the bypass input circuit is controlled to supply power for the load according to the real-time power of the storage battery>
And said second battery maximum allowable power +.>
Controlling the charging power of the storage battery;
s270: when (when)
≥
In this case, the real-time power of the accumulator is determined by +.>
And said first battery maximum allowable power +.>
And controlling the on-off of the first static switch and the second static switch, and controlling the charging power of the storage battery.
3. The control method according to claim 2, characterized in that said S260 comprises:
s261: when (when)
＞
In this case, the charging power of the battery is controlled to be reduced until +.>
=
；
S262: when (when)
≤
And controlling the charging power of the storage battery to be unchanged.
4. The control method according to claim 2, characterized in that said S270 includes:
s271: controlling the charging power of the storage battery to ensure that the power obtained by the load is the actual required power of the load
；
S272: when (when)
＞
At the time, the charging power of the storage battery is controlled to be reduced to +.>
=
According to rated charging power of accumulator>
And the first battery maximum allowable power +.>
Controlling the on-off of the first static switch and the second static switch;
s273: when (when)
≤
And when the first static switch is controlled to be turned on, the second static switch is controlled to be turned off, the main input circuit supplies power for the storage battery and the load, and the charging power of the storage battery is controlled to be unchanged.
5. The control method according to claim 4, characterized in that S272 includes:
when (when)
When the first static switch is controlled to be closed, the second static switch is controlled to be opened, the main input circuit supplies power for the storage battery, the bypass input circuit supplies power for the load, and the power of the storage battery is controlled to be not more than +.>
；
When (when)
When the first static switch is controlled to be opened, the second static switch is controlled to be closed, and the main input circuit is theA battery and the load supply power;
wherein ,
and the charging coefficient of the storage battery.
6. An uninterruptible power supply control device with a sub-control logic for controlling on-off of an output port, wherein the uninterruptible power supply comprises:
a primary input circuit, the primary input circuit comprising: the main input circuit is connected with a load through the first static switch;
a bypass input circuit, the bypass input circuit comprising: a second static switch through which the bypass input circuit is connected to the load;
the control device includes:
the detection module is used for acquiring detection data, and the detection data comprises: input voltage of main input circuit
Maximum operating current of rectifier->
Battery charging voltage->
Battery charging current->
Rectifier efficiency->
Inverter efficiency->
Battery charging efficiency->
And load actual demand power +.>
；
And the control module is used for controlling the on-off of the first static switch and the second static switch according to the detection data and controlling the charging power of the storage battery.
7. An uninterruptible power supply, the uninterruptible power supply comprising: a processor, a memory and a program or instruction stored on the memory and executable on the processor, which when executed by the processor, implements the steps of the control method according to any one of claims 1 to 5.
8. A readable storage medium, characterized in that it stores thereon a program or instructions that, when executed by a processor, implement the steps of the control method according to any one of claims 1 to 5.
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