CN115562413A - Balance board circuit control method and device, electronic equipment and readable storage medium - Google Patents
Balance board circuit control method and device, electronic equipment and readable storage medium Download PDFInfo
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- CN115562413A CN115562413A CN202211119992.0A CN202211119992A CN115562413A CN 115562413 A CN115562413 A CN 115562413A CN 202211119992 A CN202211119992 A CN 202211119992A CN 115562413 A CN115562413 A CN 115562413A
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05F—SYSTEMS FOR REGULATING ELECTRIC OR MAGNETIC VARIABLES
- G05F1/00—Automatic systems in which deviations of an electric quantity from one or more predetermined values are detected at the output of the system and fed back to a device within the system to restore the detected quantity to its predetermined value or values, i.e. retroactive systems
- G05F1/10—Regulating voltage or current
- G05F1/46—Regulating voltage or current wherein the variable actually regulated by the final control device is dc
- G05F1/56—Regulating voltage or current wherein the variable actually regulated by the final control device is dc using semiconductor devices in series with the load as final control devices
- G05F1/561—Voltage to current converters
Abstract
The application relates to a balance board circuit control method, a balance board circuit control device, electronic equipment and a readable storage medium, wherein the method comprises the following steps: acquiring a sampling balance plate current of a balance plate circuit, and acquiring a balance plate current deviation according to the sampling balance plate current; inputting the current deviation of the balance plate into a quasi-PR controller to obtain a feedforward parameter; and generating a control signal according to the feedforward parameter, and sending the control signal to the balance board circuit. Through gathering the balance plate current, make can reflect the bias voltage condition between positive busbar voltage and the negative busbar voltage through the balance plate current deviation who obtains, and correct control signal so that the control signal who obtains can make positive busbar voltage and negative busbar voltage balance through accurate PR controller based on balance plate current deviation, accurate PR controller is to exchanging signal tracking effect preferred simultaneously, consequently, can further improve control signal's validity.
Description
Technical Field
The present disclosure relates to the field of circuit control, and in particular, to a method and an apparatus for controlling a balance board circuit, an electronic device, and a readable storage medium.
Background
The existing balance board control mode controls positive bus voltage and negative bus voltage by controlling an upper IGBT thyristor and a lower IGBT thyristor, theoretically, zero line current is 0, but in practical application, zero line current is not 0 due to unbalanced three-phase current, so that the problem of bias voltage of the positive bus voltage and the negative bus voltage is solved, and normal operation of a circuit is influenced.
Disclosure of Invention
The application provides a balance board circuit control method and device, electronic equipment and a readable storage medium, and aims to solve the technical problem that a balance board is biased in the prior art.
In order to solve the technical problems or at least partially solve the technical problems, the present application provides a balance board circuit control method, including:
acquiring a sampling balance plate current of a balance plate circuit, and acquiring a balance plate current deviation according to the sampling balance plate current;
inputting the current deviation of the balance plate into a quasi-PR controller to obtain a feedforward parameter;
and generating a control signal according to the feedforward parameter, and sending the control signal to the balance board circuit.
Optionally, the step of obtaining a balance plate current deviation according to the sampled balance plate current includes:
obtaining a given balance plate current;
taking the difference of the given balance plate current and the sampled balance plate current as the balance plate current deviation.
Optionally, the step of obtaining a given balance plate current comprises:
acquiring a three-phase current value, a positive bus voltage and a negative bus voltage;
determining a zero line current according to the three-phase current value;
and obtaining the given balance plate current according to the zero line current, the positive bus voltage and the negative bus voltage.
Optionally, the step of obtaining the given balance plate current according to the zero line current, the positive bus voltage and the negative bus voltage includes:
judging whether the current of the zero line is more than 0 or less than 0;
if the zero line current is larger than 0, taking the ratio of the product of the zero line current and the negative bus voltage to the positive bus voltage as the given balance plate current;
and if the zero line current is less than 0, taking the ratio of the product of the zero line current and the positive bus voltage to the negative bus voltage as the given balance plate current.
Optionally, the step of generating a control signal according to the feedforward parameter comprises:
acquiring an average positive voltage of a positive bus voltage and an average negative voltage of a negative bus voltage in a preset period, and taking a difference value of the average positive voltage and the average negative voltage as an average voltage deviation;
inputting the average voltage deviation into a PI controller to obtain a stable parameter;
and generating the control signal according to the stable parameter and the feedforward parameter.
Optionally, the step of generating the control signal according to the stability parameter and the feedforward parameter includes:
normalizing the sum of the stable parameter and the feedforward parameter to obtain a duty ratio;
generating the control signal according to the duty cycle.
Optionally, the step of generating a control signal according to the feedforward parameter and sending the control signal to the balance board circuit includes:
determining a first duty ratio of a first switching tube and a second duty ratio of a second switching tube of the balance board circuit according to the feedforward parameters;
generating a first control signal according to the first duty cycle and generating a second control signal according to the second duty cycle;
and sending the first control signal to the first switch tube, and sending the second control signal to the second switch tube.
In order to achieve the above object, the present application also provides a balance board circuit control device, including:
the first acquisition module is used for acquiring the sampling balance plate current of the balance plate circuit and acquiring the balance plate current deviation according to the sampling balance plate current;
the first execution module is used for inputting the current deviation of the balance plate into a quasi-PR controller to obtain a feedforward parameter;
and the first generation module is used for generating a control signal according to the feedforward parameter and sending the control signal to the balance board circuit.
To achieve the above object, the present application also provides an electronic device including a memory, a processor, and a computer program stored on the memory and executable on the processor, the computer program implementing the steps of the balance board circuit control method as described above when executed by the processor.
To achieve the above object, the present application also provides a computer-readable storage medium having a computer program stored thereon, which when executed by a processor, implements the steps of the balance board circuit control method as described above.
The application provides a balance board circuit control method, a balance board circuit control device, an electronic device and a readable storage medium, wherein the balance board circuit control method comprises the following steps: acquiring a sampling balance plate current of a balance plate circuit, and acquiring a balance plate current deviation according to the sampling balance plate current; inputting the current deviation of the balance plate into a quasi PR controller to obtain a feedforward parameter; and generating a control signal according to the feedforward parameter and sending the control signal to the balance board circuit. This application is through gathering the balance plate electric current for can reflect the bias voltage condition between positive busbar voltage and the negative busbar voltage through the balance plate electric current deviation that obtains, and correct control signal so that the control signal who obtains can make positive busbar voltage and negative busbar voltage balance based on balance plate electric current deviation through accurate PR controller, accurate PR controller is to alternating current signal tracking effect preferred simultaneously, consequently, can further improve control signal's validity.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present application and together with the description, serve to explain the principles of the application.
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious for those skilled in the art to obtain other drawings without inventive labor.
FIG. 1 is a schematic flow chart diagram illustrating a first embodiment of a balancing board circuit control method according to the present application;
FIG. 2 is a diagram of a basic structure of a balance board circuit in the balance board circuit control method of the present application;
FIG. 3 is a schematic overall flow chart of the balance board circuit control method of the present application;
FIG. 4 is a control block diagram of the balance board circuit control method of the present application;
fig. 5 is a schematic diagram of a module structure of an electronic device according to the present application.
Detailed Description
It should be understood that the specific embodiments described herein are merely illustrative of the present application and are not intended to limit the present application. In order to make the technical solutions of the present application better understood by those skilled in the art, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only some embodiments of the present application, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
The present application provides a method for controlling a balance board circuit, referring to fig. 1, where fig. 1 is a schematic flow chart of a first embodiment of the method for controlling a balance board circuit of the present application, and the method includes the steps of:
step S10, acquiring a sampling balance plate current of a balance plate circuit, and acquiring a balance plate current deviation according to the sampling balance plate current;
the application is applied to the balance plate circuit control device, and the balance plate circuit control device is connected with the balance plate circuit; the balance board circuit is used for the AC-DC conversion circuit. Referring to fig. 2, the basic structure diagram of the balance board circuit in this embodiment includes a first switching tube Q1, a second switching tube Q2, and an inductor L1, where the first capacitor C1 and the second capacitor C2 are dc-side capacitors of an inverter circuit (a specific inverter circuit is not shown in the figure), respectively, where:
the input end of the first switch tube Q1 is connected with the positive electrode of a first capacitor C1, the positive electrode of the first capacitor C1 is connected with a direct-current positive bus of an inverter circuit, the negative electrode of the first capacitor C1 is connected with a zero line N of a three-phase power supply, the output end of the first switch tube Q1 is respectively connected with the input end of a second switch tube Q2 and the first end of an inductor L1, the output end of the second switch tube Q2 is connected with the negative electrode of the second capacitor C2, the negative electrode of the second capacitor C2 is connected with a direct-current negative bus of the inverter circuit, the positive electrode of the second capacitor C2 is connected with the zero line N of the three-phase power supply, and the second end of the inductor L1 is connected with the zero line N of the three-phase power supply; the control terminals of the first switch Q1 and the second switch Q2 are connected to the output terminal of the balancing board circuit control device (not shown).
Wherein, A, B and C respectively represent three-phase power.
The switching tube in this embodiment is an IGBT, and an MOS tube or other switching devices may be used according to actual needs.
It should be noted that the above is only for explaining the basic structure of the balanced board circuit, and on this basis, the circuit structure can be adjusted according to actual needs, and the structure of fig. 2 will be explained later.
Generally, when three-phase currents are balanced, a zero line current is 0, and no bias voltage exists at this time, but when an overall direct current component exists in the three-phase currents, the zero line current is not 0, so that a bias voltage phenomenon occurs, and the bias voltage refers to a problem that a positive bus voltage (i.e., a first capacitor voltage) is not equal to a negative bus voltage (i.e., a second capacitor voltage).
In terms of control, the first switch tube Q1 and the second switch tube Q2 are not conducted simultaneously, when the first switch tube Q1 is conducted, energy is transferred from the positive bus voltage to the negative bus voltage, and when the second switch tube Q2 is conducted, energy is transferred from the negative bus voltage to the positive bus voltage.
In order to realize the balance of the bus voltage, the control logic of the balance board circuit is as follows:
zero line current is positive time, and zero line current direction from left to right, and at this moment, negative bus voltage descends, makes the energy transfer to negative bus voltage from positive bus voltage through switching on first switch tube Q1, realizes that bus voltage is balanced, and it is known according to the conservation of energy this moment:
V busn ×Curr_N＝V busp ×Curr_IBL
wherein, V busn Is a negative bus voltage, V busp The voltage is a positive bus voltage, curr _ N is zero line current, and Curr _ IBL is balance plate current; the balance plate current is the given balance plate current.
When zero line electric current is the burden, zero line current direction is from the right side to left, and at this moment, positive busbar voltage descends, makes the energy transfer to positive busbar voltage from negative busbar voltage through switching on second switch tube Q2, realizes that busbar voltage is balanced, and is known according to the conservation of energy this moment:
V busp ×Curr_N＝V busn ×Curr_IBL
according to the control logic, the balance plate current and the zero line current have a certain correlation, so that the bias voltage can be controlled by controlling the balance plate current.
Referring to fig. 3 subsequently, the step S10 includes the steps of:
step S11, obtaining a given balance plate current;
and S12, taking the difference value of the given balance plate current and the sampling balance plate current as the balance plate current deviation.
The current of the balance plate is given as the target current of the balance plate, the current of the sampling balance plate is the real-time current of the inductor L1, and the current deviation of the balance plate is used for representing the difference between the current of the sampling balance plate and the current of the given balance plate. It should be noted that the sampling balance plate current can be calculated by setting a corresponding sampling device, such as a current sensor, or by other circuit parameters.
Step S20, inputting the current deviation of the balance plate into a quasi PR controller to obtain a feedforward parameter;
the zero line current consists of current with the fundamental wave as 150Hz, and in practical application, the current with 150Hz and 300Hz accounts for the main component; the traditional proportional-integral PI controller has poor tracking effect on the alternating flow, and the quasi-proportional resonant PR controller can increase the open-loop gain, increase the control precision and reduce the steady-state error of the system; the feedforward parameters obtained by the quasi-PR controller can have stronger tracking performance on the current deviation of the balance plate.
In this embodiment, the transfer function of the quasi-PR controller is:
where Kp1 is a first scale factor, kr is a resonance factor, wc is a frequency band, wo is a resonance angular velocity, and s is laplace transform.
And step S30, generating a control signal according to the feedforward parameter, and sending the control signal to the balance board circuit.
Because the feedforward parameter obtained by the quasi-PR controller has stronger tracking performance on the current deviation of the balance plate, the positive and negative bus voltages can be accurately stabilized under the control of the control signal generated based on the feedforward parameter so as to eliminate the bias problem.
This embodiment is through gathering the balance plate electric current, make can reflect the bias voltage condition between positive busbar voltage and the negative busbar voltage through the balance plate electric current deviation that obtains, and correct control signal based on balance plate electric current deviation through accurate PR controller, so that the control signal who obtains can all guarantee the voltage stability between positive busbar voltage and the negative busbar under the circumstances of being incorporated into the power networks and filling, discharge and off-grid area half-wave load, avoid appearing the bias voltage problem, accurate PR controller is to alternating current signal tracking effect preferred simultaneously, therefore, control signal's validity can further be improved, guarantee the steady operation of system.
Further, in a second embodiment of the balance board circuit control method of the present application proposed based on the first embodiment of the present application, the step S11 includes the steps of:
step S111, acquiring a three-phase current value, a positive bus voltage and a negative bus voltage;
step S112, determining zero line current according to the three-phase current value;
and S113, obtaining the given balance plate current according to the zero line current, the positive bus voltage and the negative bus voltage.
According to the three-phase electric principle, the zero line current is the sum of three-phase currents, specifically:
Curr_N＝-(I a +I b +I c )
wherein, curr _ N is zero line current, I a 、I b 、I c Respectively, a phase current.
Meanwhile, according to the analysis, the zero line current, the balance board current, the positive bus voltage and the negative bus voltage have an incidence relation, so that the ideal balance board current, namely the given balance board current, can be obtained through the zero line current, the positive bus voltage and the negative bus voltage.
It is understood that the three-phase current value, the positive bus voltage and the negative bus voltage can be obtained by arranging corresponding detection devices, such as voltage sensors, current sensors and the like.
Further, the step S113 includes the steps of:
step S1131, judging that the zero line current is greater than 0 or less than 0;
step S1132, if the zero line current is greater than 0, taking a ratio of a product of the zero line current and the negative bus voltage to the positive bus voltage as the given balance board current;
step S1133, if the zero line current is smaller than 0, taking a ratio of a product of the zero line current and the positive bus voltage to the negative bus voltage as the given balance board current.
From the control logic, the current model of the balance board circuit is:
when Curr _ N >0, turning on a first switch tube Q1, and giving a balance plate current (taking a scalar):
Curr IBL ＝V busn *Curr N /V busp
when Curr _ N <0, the second switching tube Q2 is turned on, and the balance plate current (scalar):
Curr IBL ＝V busp *Curr N /V busn
the calculation of a given balance plate current in the case of different directions of the zero line current can be obtained from the current model of the balance plate described above.
The present embodiment can accurately acquire a given balance plate current.
Further, in a third embodiment of the balanced board circuit control method of the present application proposed based on the first embodiment of the present application, the step S30 includes the steps of:
step S31, acquiring an average positive voltage of a positive bus voltage and an average negative voltage of a negative bus voltage in a preset period, and taking a difference value of the average positive voltage and the average negative voltage as an average voltage deviation;
step S32, inputting the average voltage deviation into a PI controller to obtain a stable parameter;
step S33, generating the control signal according to the stable parameter and the feedforward parameter.
Referring to fig. 4, when the balance board circuit is controlled based on the balance board current, a static error may be generated due to the influence of sampling precision or leakage current, thereby affecting the precision of control; in the embodiment, the average voltage deviation between the positive bus voltage and the negative bus voltage is obtained in the preset period, and the average voltage deviation is tracked by the proportional-integral PI controller to obtain the stable parameter, so that the static error is eliminated by the stable parameter, and the control precision of the control signal is improved. The specific value of the preset period may be set according to an actual application scenario, and the preset period in this embodiment is 20ms.
In this embodiment, the transfer function of the PI controller is
Kp2 is a second proportional coefficient, and Ki is an integral coefficient.
After the stability parameter is obtained, the control signal is generated by the stability parameter and the feedforward parameter together.
Further, the step S33 includes the steps of:
step S331, normalizing the sum of the stable parameter and the feedforward parameter to obtain a duty ratio;
step S332, generating the control signal according to the duty ratio.
The sum of the stable parameter and the feedforward parameter is a specific control parameter, and the duty ratio is obtained by normalizing the control parameter to be 0-1 because the value range of the duty ratio is 0-1. Specifically, the normalization is:
wherein D is the duty ratio, P is the sum of the stability parameter and the feedforward parameter, and k is the normalization coefficient. The specific value of k is set according to the bias withstanding degree of the actual circuit, and k =50 is set when the maximum allowable bias value of the actual circuit is 50V.
After the duty ratio is obtained, a control signal is generated according to the duty ratio and sent to the balance board circuit.
According to the embodiment, the duty ratio can be accurately obtained, and the control signal is generated according to the duty ratio.
Further, in a fourth embodiment of the balance board circuit control method of the present application proposed based on the first embodiment of the present application, the step S30 includes the steps of:
step S34, determining a first duty ratio of a first switch tube Q1 and a second duty ratio of a second switch tube Q2 of the balance board circuit according to the feedforward parameters;
step S35, generating a first control signal according to the first duty ratio, and generating a second control signal according to the second duty ratio.
And step S36, sending the first control signal to the first switch tube Q1, and sending the second control signal to the second switch tube Q2.
As can be seen from fig. 2, the balance board circuit balances the positive bus voltage and the negative bus voltage by controlling the on/off of the first switch tube Q1 and the second switch tube Q2, and therefore, the control signal of the balance board circuit is used to control the first switch tube Q1 and the second switch tube Q2. Specifically, a first control signal is used for controlling the on-off of the first switching tube Q1, and a second control signal is used for controlling the on-off of the second switching tube Q2; it can be understood that the first switch tube Q1 and the second switch tube Q2 are kept on and off at the same time, so that the sum of the duty ratios of the first switch tube Q1 and the second switch tube Q2 is 1; in actual application, the first duty ratio or the second duty ratio is determined through the feedforward parameter, whether the first duty ratio or the second duty ratio is directly influenced by the specific feedforward parameter can be set according to actual application needs, for example, the feedforward parameter directly influences the first duty ratio, after the first duty ratio is obtained, the difference between 1 and the first duty ratio is used as the second duty ratio, then a first control signal is generated according to the first duty ratio, and a second control signal is generated according to the second duty ratio.
It can be understood that, the scheme for generating the control signal according to the stability parameter and the feedforward parameter in the foregoing embodiment may be implemented with reference to this embodiment, and will not be described herein again.
The present embodiment is capable of generating a control signal based on the actual application circuit.
It should be noted that, for simplicity of description, the above-mentioned method embodiments are described as a series of acts or combination of acts, but those skilled in the art will recognize that the present application is not limited by the order of acts described, as some steps may occur in other orders or concurrently depending on the application. Further, those skilled in the art should also appreciate that the embodiments described in the specification are preferred embodiments and that the acts and modules referred to are not necessarily required in this application.
Through the above description of the embodiments, those skilled in the art can clearly understand that the method according to the above embodiments can be implemented by software plus a necessary general hardware platform, and certainly can also be implemented by hardware, but the former is a better implementation mode in many cases. Based on such understanding, the technical solutions of the present application may be embodied in the form of a software product, which is stored in a storage medium (e.g., ROM/RAM, magnetic disk, optical disk) and includes instructions for enabling a terminal device (e.g., a mobile phone, a computer, a server, or a network device) to execute the method according to the embodiments of the present application.
The present application also provides a balancing board circuit control device for implementing the above balancing board circuit control method, the balancing board circuit control device includes:
the first acquisition module is used for acquiring the sampling balance plate current of the balance plate circuit and obtaining the balance plate current deviation according to the sampling balance plate current;
the first execution module is used for inputting the current deviation of the balance plate into a quasi-PR controller to obtain a feedforward parameter;
and the first generation module is used for generating a control signal according to the feedforward parameter and sending the control signal to the balance board circuit.
This balance plate circuit control device is through gathering the balance plate electric current for can reflect the bias voltage condition between positive busbar voltage and the negative busbar voltage through the balance plate electric current deviation who obtains, and correct control signal so that the control signal who obtains can make positive busbar voltage and negative busbar voltage balanced based on balance plate electric current deviation through accurate PR controller, accurate PR controller is to alternating current signal tracking effect preferred simultaneously, consequently, can further improve control signal's validity.
It should be noted that the first obtaining module in this embodiment may be configured to execute step S10 in this embodiment, the first executing module in this embodiment may be configured to execute step S20 in this embodiment, and the first generating module in this embodiment may be configured to execute step S30 in this embodiment.
Further, the first obtaining module includes:
the first acquisition submodule is used for acquiring the current of the given balance plate;
a first execution submodule to use a difference between the given balance plate current and the sampled balance plate current as the balance plate current offset.
Further, the first obtaining sub-module includes:
the first acquisition unit is used for acquiring a three-phase current value, a positive bus voltage and a negative bus voltage;
a first determining unit for determining a zero-line current according to the three-phase current value;
and the first execution unit is used for obtaining the given balance plate current according to the zero line current, the positive bus voltage and the negative bus voltage.
Further, the first execution unit includes:
the first judgment subunit is used for judging whether the zero line current is greater than 0 or less than 0;
the first execution subunit is configured to, if the zero line current is greater than 0, use a ratio of a product of the zero line current and the negative bus voltage to the positive bus voltage as the given balance board current;
and the second execution subunit is used for taking the ratio of the product of the zero line current and the positive bus voltage to the negative bus voltage as the given balance plate current if the zero line current is less than 0.
Further, the first generating module comprises:
the second acquisition submodule is used for acquiring the average positive voltage of the positive bus voltage and the average negative voltage of the negative bus voltage in a preset period and taking the difference value of the average positive voltage and the average negative voltage as the average voltage deviation;
the second execution submodule is used for inputting the average voltage deviation into the PI controller to obtain a stable parameter;
and the first generation submodule is used for generating the control signal according to the stable parameter and the feedforward parameter.
Further, the first generation submodule is configured to include:
the second execution unit is used for normalizing the sum of the stable parameter and the feedforward parameter to obtain a duty ratio;
a first generating unit, configured to generate the control signal according to the duty ratio.
Further, the generating module according to the first comprises:
the first determining submodule is used for determining a first duty ratio of a first switching tube and a second duty ratio of a second switching tube of the balance plate circuit according to the feedforward parameters;
the second generation submodule is used for generating a first control signal according to the first duty ratio and generating a second control signal according to the second duty ratio;
and the first sending submodule is used for sending the first control signal to the first switch tube and sending the second control signal to the second switch tube.
It should be noted here that the modules described above are the same as the examples and application scenarios implemented by the corresponding steps, but are not limited to the disclosure of the above embodiments. It should be noted that the modules as part of the apparatus may be implemented by software or hardware, where the hardware environment includes a network environment.
Referring to fig. 5, the electronic device may include components such as a communication module 10, a memory 20, and a processor 30 in a hardware structure. In the electronic device, the processor 30 is connected to the memory 20 and the communication module 10, respectively, the memory 20 stores thereon a computer program, which is executed by the processor 30 at the same time, and when executed, implements the steps of the above-mentioned method embodiments.
The communication module 10 may be connected to an external communication device through a network. The communication module 10 may receive a request from an external communication device, and may also send the request, an instruction, and information to the external communication device, where the external communication device may be other electronic devices, a server, or an internet of things device, such as a television, etc.
The memory 20 may be used to store software programs as well as various data. The memory 20 may mainly include a program storage area and a data storage area, wherein the program storage area may store an operating system, an application program required for at least one function (such as obtaining a sampled balance board current of a balance board circuit), and the like; the storage data area may include a database, and the storage data area may store data or information created according to use of the system, or the like. Further, the memory 20 may include high speed random access memory, and may also include non-volatile memory, such as at least one magnetic disk storage device, flash memory device, or other volatile solid state storage device.
The processor 30, which is a control center of the electronic device, connects various parts of the entire electronic device using various interfaces and lines, performs various functions of the electronic device and processes data by operating or executing software programs and/or modules stored in the memory 20 and calling data stored in the memory 20, thereby integrally monitoring the electronic device. Processor 30 may include one or more processing units; alternatively, the processor 30 may integrate an application processor, which mainly handles operating systems, user interfaces, application programs, etc., and a modem processor, which mainly handles wireless communications. It will be appreciated that the modem processor described above may not be integrated into the processor 30.
Although not shown in fig. 5, the electronic device may further include a circuit control module, which is connected to a power supply to ensure the normal operation of other components. Those skilled in the art will appreciate that the electronic device configuration shown in fig. 5 does not constitute a limitation of the electronic device and may include more or fewer components than those shown, or some components may be combined, or a different arrangement of components.
The present application also proposes a computer-readable storage medium having stored thereon a computer program. The computer-readable storage medium may be the memory 20 in the electronic device in fig. 5, and may also be at least one of a ROM (Read-only memory)/RAM (random access memory), a magnetic disk, and an optical disk, where the computer-readable storage medium includes several instructions to enable a terminal device (which may be a television, an automobile, a mobile phone, a computer, a server, a terminal, or a network device) having a processor to execute the method in the embodiments of the present application.
In this application, the terms "first", "second", "third", "fourth" and "fifth" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance, and the specific meanings of the above terms in this application will be understood to those of ordinary skill in the art according to the specific circumstances.
In the description herein, reference to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the application. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.
Although the embodiments of the present application have been shown and described, the scope of protection of the present application is not limited thereto, and it should be understood that the above embodiments are illustrative and not to be construed as limiting the present application, and that those skilled in the art can make changes, modifications and substitutions to the above embodiments within the scope of the present application, and that these changes, modifications and substitutions are all covered by the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.
Claims (10)
1. A method of controlling a balanced pad circuit, the method comprising:
acquiring a sampling balance plate current of a balance plate circuit, and acquiring a balance plate current deviation according to the sampling balance plate current;
inputting the current deviation of the balance plate into a quasi-PR controller to obtain a feedforward parameter;
and generating a control signal according to the feedforward parameter, and sending the control signal to the balance board circuit.
2. The balance board circuit control method of claim 1, wherein the step of deriving a balance board current deviation from the sampled balance board current comprises:
obtaining a given balance plate current;
taking the difference of the given balance plate current and the sampled balance plate current as the balance plate current deviation.
3. The balance board circuit control method of claim 2, wherein the step of obtaining a given balance board current comprises:
acquiring a three-phase current value, a positive bus voltage and a negative bus voltage;
determining a zero line current according to the three-phase current value;
and obtaining the given balance plate current according to the zero line current, the positive bus voltage and the negative bus voltage.
4. The balance board circuit control method of claim 3, wherein the step of deriving the given balance board current from the neutral line current, the positive bus voltage, and the negative bus voltage comprises:
judging whether the zero line current is greater than 0 or less than 0;
if the zero line current is larger than 0, taking the ratio of the product of the zero line current and the negative bus voltage to the positive bus voltage as the given balance plate current;
and if the zero line current is less than 0, taking the ratio of the product of the zero line current and the positive bus voltage to the negative bus voltage as the given balance plate current.
5. The balance board circuit control method of claim 1, wherein the step of generating a control signal according to the feedforward parameter includes:
acquiring an average positive voltage of a positive bus voltage and an average negative voltage of a negative bus voltage in a preset period, and taking a difference value of the average positive voltage and the average negative voltage as an average voltage deviation;
inputting the average voltage deviation into a PI controller to obtain a stable parameter;
and generating the control signal according to the stable parameter and the feedforward parameter.
6. The balance board circuit control method of claim 5, wherein the step of generating the control signal according to the settling parameter and the feed-forward parameter comprises:
normalizing the sum of the stable parameter and the feedforward parameter to obtain a duty ratio;
generating the control signal according to the duty cycle.
7. The balance board circuit control method of claim 1, wherein the step of generating a control signal according to the feedforward parameter and sending the control signal to the balance board circuit comprises:
determining a first duty ratio of a first switching tube and a second duty ratio of a second switching tube of the balance board circuit according to the feedforward parameters;
generating a first control signal according to the first duty cycle and generating a second control signal according to the second duty cycle;
and sending the first control signal to the first switch tube, and sending the second control signal to the second switch tube.
8. A balance board circuit control apparatus, characterized by comprising:
the first acquisition module is used for acquiring the sampling balance plate current of the balance plate circuit and obtaining the balance plate current deviation according to the sampling balance plate current;
the first execution module is used for inputting the current deviation of the balance plate into a quasi-PR controller to obtain a feedforward parameter;
and the first generation module is used for generating a control signal according to the feedforward parameter and sending the control signal to the balance board circuit.
9. An electronic device, characterized in that the electronic device comprises a memory, a processor and a computer program stored on the memory and executable on the processor, the computer program, when executed by the processor, implementing the steps of the balanced pad circuit control method according to any of claims 1 to 7.
10. A computer-readable storage medium, characterized in that a computer program is stored thereon, which computer program, when being executed by a processor, realizes the steps of the balance board circuit control method according to any one of claims 1 to 7.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211119992.0A CN115562413A (en) | 2022-09-14 | 2022-09-14 | Balance board circuit control method and device, electronic equipment and readable storage medium |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211119992.0A CN115562413A (en) | 2022-09-14 | 2022-09-14 | Balance board circuit control method and device, electronic equipment and readable storage medium |
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| CN202211119992.0A Pending CN115562413A (en) | 2022-09-14 | 2022-09-14 | Balance board circuit control method and device, electronic equipment and readable storage medium |
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| CN (1) | CN115562413A (en) |
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