Method and apparatus for adjusting power of power source, and power source and medium
Patent Information
- Application Number
- PCT/CN2026/080658
- Authority / Receiving Office
- WO · WO
- Patent Type
- Applications
- Current Assignee / Owner
- Priority Date
- 2025-03-20
- Filing Date
- 2026-02-28
- Publication Date
- 2026-09-24
Smart Images
Figure CN2026080658_24092026_PF_FP_ABST
Abstract
Description
A method, apparatus, power supply, and dielectric for adjusting power supply power.
[0001] This application claims priority to Chinese Patent Application No. 2025103400748, filed on March 20, 2025, entitled "A method, apparatus, power supply and medium for adjusting power supply power", the entire contents of which are incorporated herein by reference. Technical Field
[0002] This application relates to the field of power supply technology, specifically to a method, apparatus, power supply, and storage medium for adjusting power supply power. Background Technology
[0003] Currently, various power supplies are widely used in various fields, such as radio frequency power supplies and DC power supplies. The output power signal of a power supply is often controlled by pulses. In pulse mode, the power supply controller sends pulse control signals to the rectifier module of the power supply body, so that the rectifier module outputs voltage and current as needed, thereby enabling the power supply to output the power signal desired by the user. However, in switching mode power supplies in the rectifier module, a brief voltage drop may occur when the load changes or when the aforementioned pulse control signal is generated. This leads to instability in the output signal of the rectifier module, resulting in jitter in the final output power of the power supply with each pulse control signal. The waveform of the power signal is severely distorted for a brief period, which is detrimental to the application of the power supply. Summary of the Invention
[0004] In view of this, this application provides a method, apparatus, power supply, and storage medium for adjusting power supply power, in order to solve the problem of severe transient distortion of the waveform of the power signal of the power supply.
[0005] In a first aspect, this application provides a method for adjusting power supply power, applied to a controller. The method includes: acquiring an output power signal of the power supply; generating a first adjustment signal based on a first PI control method according to the signal error between the output power signal and a target power signal, and sending the first adjustment signal to the power supply's adjustment module; the first PI control method is a PI control method with fixed PI parameters; when the output power signal reaches the target power signal, switching to generating a second adjustment signal based on the signal error between the output power signal and the target power signal using a second PI control method, and sending the second adjustment signal to the power supply's adjustment module; the second PI control method is a PI control method that allows the PI parameters to be different at different times based on the signal error.
[0006] In some optional implementations, the second PI control method divides a preset number of time periods into tuning periods, and when the second PI control method performs parameter tuning based on the signal error, the PI parameters in the current tuning period are tuned based on the PI parameters in the previous tuning period.
[0007] In some optional implementations, generating a second adjustment signal using a second PI control method based on the signal error between the output power signal and the target power signal includes: acquiring the output power signal waveform corresponding to the Nth time period within the current tuning period; acquiring the original PI parameters for the Nth time period within the previous tuning period; calculating the sub-signal error for the Nth time period within the current tuning period based on the target power signal waveform and the output power signal for the Nth time period within the current tuning period; adjusting the original PI parameters based on the sub-signal error for the Nth time period within the current tuning period to obtain new PI parameters for the Nth time period within the current tuning period; and generating a current second adjustment signal based on the new PI parameters, wherein the current second adjustment signal is used to change the output power signal waveform for the Nth time period of the next tuning period.
[0008] In some alternative implementations, the length of the tuning period is equal to the time it takes for the controller to output a single pulse control signal from the end.
[0009] In some optional implementations, the method further includes: determining a target time period in each tuning cycle during which the output power signal meets a preset jitter condition; adjusting the PI parameter using the second PI control method for the target time period; and setting the non-target time period that does not meet the preset jitter condition to a fixed PI parameter in the first PI control method.
[0010] In some optional implementations, the method further includes: when the first PI control method is switched to the second PI control method, the first tuning cycle of the second PI control stage is based on the PI parameter of the target time length within the first PI control stage, the target time length is the same as the length of the first tuning cycle, and the end of the target time length is connected to the switching time.
[0011] In some optional implementations, the fixed PI parameters in the first PI control method are obtained through pre-tuning. When pre-tuning the parameters according to the signal error, the tuning basis of the PI parameters in the current time period is the PI parameters of the previous time period adjacent to the current time period. Furthermore, when the output power signal reaches the target power signal, the PI parameters are fixed to a unique value.
[0012] Secondly, this application provides a power supply adjustment device applied to a controller. The device includes: a measured signal module for acquiring the output power signal of the power supply; a first module for generating a first adjustment signal based on a first PI control method according to the signal error between the output power signal and the target power signal, and sending the first adjustment signal to the power supply's adjustment module, wherein the first PI control method is a PI control method with fixed PI parameters; and a second adjustment module for switching to generating a second adjustment signal based on the signal error between the output power signal and the target power signal using a second PI control method when the output power signal reaches the target power signal, and sending the second adjustment signal to the power supply's adjustment module, wherein the second PI control method is a PI control method that allows the PI parameters to be changed at different times based on the signal error.
[0013] Thirdly, this application provides a power supply, comprising: a power supply body, a memory, and a controller, wherein the memory and the controller are communicatively connected to each other, the memory stores computer instructions, and the controller executes the computer instructions to perform the method provided in any of the first aspects to adjust the output signal of the power supply body.
[0014] Fourthly, this application provides a computer-readable storage medium storing computer instructions for causing a computer to perform the method described in the first aspect or any corresponding embodiment thereof.
[0015] Fifthly, this application provides a computer program product, including computer instructions for causing a computer to perform the method described in the first aspect or any corresponding embodiment thereof.
[0016] The technical solution provided in this application has the following advantages:
[0017] The technical solution provided in this application first adjusts the output power signal to the target power signal size based on a first PI control method with fixed PI parameters, and then switches to a second PI control method. In response to the jitter in the output power signal caused by external interference, a method of adaptive change of PI parameters at different time periods is used to smooth the jitter in the output power signal, thereby significantly improving the stability and accuracy of the power signal and facilitating the reliable application of the power supply. Attached Figure Description
[0018] To more clearly illustrate the technical solutions in the specific embodiments of this application or the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this application. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.
[0019] Figure 1 is a waveform diagram of the output power signal under the first PI control method of the related technology;
[0020] Figure 2 is a schematic flowchart of a power adjustment method according to an embodiment of this application;
[0021] Figure 3 is a waveform diagram of the output power signal under the second PI control method according to an embodiment of this application;
[0022] Figure 4 is another waveform diagram of the output power signal under the second PI control method according to an embodiment of this application;
[0023] Figure 5 is another waveform diagram of the output power signal under the second PI control method according to an embodiment of this application;
[0024] Figure 6 is another waveform diagram of the output power signal under the second PI control method according to an embodiment of this application;
[0025] Figure 7 is another waveform diagram of the output power signal under the second PI control method according to an embodiment of this application;
[0026] Figure 8 is a waveform diagram of the output power signal under the first PI control method according to an embodiment of this application;
[0027] Figure 9 is another waveform diagram of the output power signal under the second PI control method according to an embodiment of this application;
[0028] Figure 10 is a schematic diagram of a power adjustment device according to an embodiment of this application;
[0029] Figure 11 is a schematic diagram of a power supply according to an embodiment of this application. Detailed Implementation
[0030] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.
[0031] Currently, various types of power supplies are widely used in various fields, such as radio frequency (RF) power supplies and DC power supplies. RF power supplies are devices used to generate high-frequency alternating current (AC), widely used in communications, medical, and industrial heating fields. RF power supplies generate high-frequency AC power with frequencies ranging from tens of kHz to hundreds of MHz to drive RF loads. The core of an RF power supply is the conversion of DC to high-frequency AC, mainly including the following parts: a rectifier module converts the input AC mains power to DC; a high-frequency inverter module uses switching devices to convert the DC power from the previous step to high-frequency AC; and an impedance matching module ensures that the power supply output impedance matches the load impedance, thereby transmitting the high-frequency AC power generated in the previous step to the load. Regardless of the power supply type, the output power signal is often controlled by pulses. In pulse mode, the power supply controller sends pulse control signals to the rectifier module, causing the rectifier module to output voltage and current according to the user's needs, thus enabling the power supply to output the desired power signal. However, the switching-mode power supply in the rectifier module experiences a brief voltage drop when the load changes transiently or when the aforementioned pulse control signal is generated. This causes instability in the rectifier module's output signal, resulting in fluctuations in the final output power with each pulse control signal and severe transient waveform distortion of the power signal. For example, as shown in Figure 1, after adjusting the actual output power signal to the target power signal according to the fixed PI parameters of the first PI (Proportional Integral), the output power signal should remain stable near the target power signal without external interference. Because the pulse control signal causes a brief voltage drop in the switching-mode power supply, equivalent to an external disturbance, the output power signal will continue to fluctuate with subsequent pulses. Furthermore, since the interference caused by voltage drops is transient and not present throughout the entire signal output time, a predictive anti-interference method is needed to solve it. The parameter tuning process of the first PI control method is to adjust the PI parameters of the next hour based on the PI parameters of the previous hour to control the waveform of the next hour. However, the next hour is not necessarily the waveform area where jitter occurs. As a result, the response speed of the first PI control method cannot keep up with the rate of change of the disturbance and cannot solve the problem of severe transient waveform distortion of the power signal. This problem is not conducive to the application of the power supply.
[0032] According to an embodiment of this application, a method for adjusting power supply is provided. It should be noted that the steps shown in the flowchart in the accompanying drawings can be executed in a computer system such as a set of computer-executable instructions. Although a logical order is shown in the flowchart, in some cases, the steps shown or described may be executed in a different order than that shown here.
[0033] This embodiment provides a method for adjusting power supply power, applied to a power supply controller, as shown in Figure 2. The process includes the following steps:
[0034] Step S101: Obtain the output power signal of the power supply.
[0035] Step S102: Based on the signal error between the output power signal and the target power signal, a first adjustment signal is generated according to the first PI control method, and the first adjustment signal is sent to the power supply module to be adjusted; the first PI control method is a PI control method with fixed PI parameters.
[0036] Step S103: When the output power signal reaches the target power signal, switch to generating a second adjustment signal based on the signal error between the output power signal and the target power signal using a second PI control method, and send the second adjustment signal to the power supply module to be adjusted; the second PI control method is a PI control method that allows PI parameters to be different at different times based on the signal error.
[0037] Specifically, the power adjustment method provided in this application includes two-stage control. The first stage control is a first PI control method, which is a commonly used PI control method. It uses fixed PI parameters (usually pre-tuned based on expert experience and experiments before control, enabling accurate and rapid adjustment of the output power to the target power) to adjust the output power to the target power, thus improving the speed of signal control. When the output power signal reaches the target power signal, this application switches to the second stage, that is, adjusting the power supply's output power signal using the second PI control method. In this application embodiment, the second PI control method is characterized by the fact that the PI parameters can be different at different times. The PI parameters for each time period are independent and are individually tuned and generated based on the signal error, unrelated to the PI parameters of adjacent time periods. The PI parameters for each time period can be directly assigned based on expert experience or adjusted based on historical PI parameters. Through this method, when voltage drop interference occurs, the PI parameters for the corresponding time period can be changed in advance based on the signal error caused by the waveform jitter of the output power signal, thereby smoothing the power signal.
[0038] For example, as shown in Figure 3, in the second PI control method, each time period requiring PI parameter tuning is independent, and the PI parameters between adjacent time periods are unrelated. For instance, the PI parameters of time period 1 and time period 2 in Figure 3 are not related, and the PI parameters of time period 2 are not adjusted based on the PI parameters of time period 1, thus differing from the traditional PI parameter tuning method. This method, based on the first PI parameter, sets a separate PI parameter for each time period according to the waveform jitter, making the output power signal of each time period more adaptable to the waveform changes of the current time period. Ultimately, the waveform of the output power signal at each time period position is smoothed individually, improving the stability and accuracy of the output power signal and overcoming the problem of severe waveform distortion caused by voltage drop.
[0039] In some optional implementations, the second PI control method divides a preset number of time periods into tuning periods. When tuning parameters based on signal error, the second PI control method tunes the PI parameters in the current tuning period based on the PI parameters in the previous tuning period.
[0040] Specifically, if there is no tuning basis for the PI parameters in each time period, it will increase the difficulty of parameter setting, causing the PI parameter setting to rely too much on expert experience and experimental results, affecting tuning efficiency and accuracy. To address this issue, as shown in Figure 4, in this embodiment, the tuning period is divided according to a preset number of time periods (i.e., a fixed time length). The PI parameters in later tuning periods are tuned based on the PI parameters in earlier tuning periods. For example, the PI parameters in tuning period 2 are fine-tuned based on the PI parameters in tuning period 1. This significantly improves the speed and adjustment range of parameter tuning in each time period, and increases the speed at which the power supply output power signal stabilizes to the target power signal.
[0041] In some optional implementations, the length of the tuning period is equal to the time it takes for the controller to output a single pulse control signal from the end. This ensures that each tuning period includes the power waveform jitter region caused by voltage drops, thus making the PI parameter of the later tuning period more correlated with the PI parameter of the earlier tuning period. The time period in the later tuning period that affects the waveform jitter can be fine-tuned and tuned based on the PI parameter of the corresponding time period in the earlier tuning period, further improving the accuracy of parameter tuning for each time period and increasing the speed at which the power supply output power signal stabilizes to the target power signal.
[0042] In an optional implementation, step S103 above includes:
[0043] Step a1: Obtain the output power signal waveform corresponding to the Nth time period within the current tuning cycle;
[0044] Step a2: Obtain the original PI parameters for the Nth time period within the previous tuning cycle;
[0045] Step a3: Calculate the sub-signal error of the Nth time period within the current tuning period based on the target power signal waveform and the output power signal of the Nth time period within the current tuning period;
[0046] Step a4: Adjust the original PI parameters according to the sub-signal error of the Nth time period within the current tuning period to obtain the new PI parameters for the Nth time period within the current tuning period;
[0047] Step a5: Generate the current second adjustment signal based on the new PI parameters. The current second adjustment signal is used to change the waveform of the output power signal in the Nth time period of the next tuning cycle.
[0048] Specifically, in this embodiment, the PI parameter tuning basis for each tuning cycle is further determined. The PI parameter setting for the Nth time period within each tuning cycle is based on the sub-signal error of the Nth time period. In other words, the PI parameter for the Nth time period is determined to increase or decrease based on the sub-signal error. Furthermore, the PI parameter for the Nth time period in the subsequent tuning cycle is adjusted based on the PI parameter for the Nth time period in the previous tuning cycle. In other words, the PI parameter for the Nth time period in the subsequent tuning cycle is adjusted based on the sub-signal error of the Nth time period in the previous tuning cycle to obtain the new PI parameter for the Nth time period in the subsequent tuning cycle.
[0049] For example, as shown in Figure 5, time period C in tuning period 2 and time period A in tuning period 1 are corresponding time periods, both being the 18th time period. Therefore, time period C in tuning period 2 needs to be adjusted based on the original PI parameters of time period A to obtain the new PI parameters for time period C. Similarly, the new PI parameters for time period D are obtained by adjusting the original PI parameters of time period B. The PI parameters of time period B have no logical relationship with the PI parameters of time period A, and similarly, the PI parameters of time period D have no logical relationship with the PI parameters of time period C.
[0050] The scheme provided in this application embodiment adjusts the PI parameters for each time period in the subsequent tuning cycle based on the corresponding PI parameters in the previous tuning cycle. If the waveform in the Nth time period of the subsequent tuning cycle has stabilized at the target power, the PI parameters for the Nth time period of the subsequent tuning cycle directly reference the PI parameters for the Nth time period of the previous tuning cycle, without needing to modify them. If the waveform in the Nth time period of the subsequent tuning cycle has a large error compared to the target power, the PI parameters for the Nth time period of the subsequent tuning cycle need to be fine-tuned based on the PI parameters for the Nth time period of the previous tuning cycle. The power supply controlled module is adjusted using the newly obtained PI parameters to change the power supply's output power, so that the power waveform in the Nth time period of the next tuning cycle tends to the target power and stabilizes at the target power. The technical solution provided by this application embodiment uses independent PI parameters to adjust the power waveform of each output period of the power supply. The PI parameters of adjacent periods do not affect each other. Since the waveform and PI parameters in the previous setting cycle are known, the approximate location of waveform jitter in the previous setting cycle is known. Therefore, the approximate waveform of each period in the subsequent setting cycle can be predicted. The method provided by this application embodiment can predictively fine-tune the PI parameters in the previous setting cycle, overcome the waveform distortion in each period in the subsequent setting cycle, and significantly improve the response speed of PI control, so that the power signal output by the power supply can be stabilized at the target power more quickly.
[0051] In some optional implementations, the following steps are also included:
[0052] Step a6: When the complete output power signal within the target tuning period is consistent with the target power signal, save the PI parameters for each time period within the target tuning period separately, and use the PI parameters saved within the target tuning period in subsequent tuning periods.
[0053] Specifically, considering that waveform jitter caused by voltage drops in the switching power supply occurs periodically, when the power signal output by the power supply can remain stable at the target power throughout the entire time, this embodiment of the application can save the PI parameters for each time period within the corresponding cycle (e.g., in the box in Figure 5) separately and copy them for use in each subsequent tuning cycle. This can quickly solve the power waveform distortion problem in the power supply without having to repeat the parameter tuning process for each cycle, thus improving signal control efficiency and reducing controller computation. However, it should be noted that in other special non-periodic waveform jitter scenarios, the above step a6 is not applicable, and tuning for each tuning cycle still needs to be performed according to the process of steps a1 to a5.
[0054] In some optional implementations, the power adjustment method provided in this application further includes:
[0055] Step b1: Determine the target time period within each tuning cycle where the output power signal meets the preset jitter conditions;
[0056] Step b2: For the target time period, adjust the PI parameters using the second PI control method.
[0057] Step b3: For non-target time periods that do not meet the preset jitter conditions, set the parameters to the fixed PI parameters in the first PI control method.
[0058] Specifically, since voltage drops occur at the moment the pulse control signal is generated, the jitter of the output power signal in the power supply often occurs periodically. Based on this, the embodiments of this application can first determine the target time period in each tuning cycle where the output power signal meets the preset jitter condition, such as the target time period α and target time period β in Figure 6. Therefore, the embodiments of this application can adjust the PI parameters only for the target time period using the second PI control method. For example, the PI parameters in target time period β are adjusted based on the PI parameters in target time period α. For non-target time periods where jitter does not occur, the fixed PI parameters in the first PI control method are used, which can further significantly improve the response speed of PI control and reduce the redundant work of tuning a large number of PI parameters. It should be noted that in this embodiment, the preset jitter condition used to detect the waveform can be determined based on indicators such as the amplitude and slope of the waveform. For example, when the amplitude and / or slope exceed the corresponding preset threshold, it is determined to be jitter. This embodiment is only an example and is not limited thereto.
[0059] In some optional implementations, the power adjustment method provided in this application further includes:
[0060] Step c1: When the first PI control method is switched to the second PI control method, the first tuning cycle of the second PI control stage is based on the PI parameter of the target time length in the first PI control stage. The target time length is the same as the length of the first tuning cycle, and the end of the target time length is connected to the switching time.
[0061] Specifically, when switching from the first PI control method to the second PI control method, since the first tuning cycle of the second PI control stage is not within the previous tuning cycle, there is a lack of PI parameters from the previous tuning cycle as a tuning basis. In this embodiment, to ensure the correct execution of the second algorithm, a target time length of the same length as the first tuning cycle is selected to collect PI parameters as the tuning basis for the PI parameters in the first tuning cycle of the second PI control. The target time length and the switching time are connected. For example, as shown in Figure 7, based on the length of the first tuning cycle, a target time length of the same length is calculated from the previous time at the switching time of the first PID stage. Then, PI parameters are collected within the target time length as the PI parameter adjustment basis for the first tuning cycle of the second PI adjustment stage, thereby improving the algorithm stability.
[0062] In some optional implementations, the fixed PI parameters in the first PI control method are obtained through pre-tuning. When pre-tuning the parameters based on the signal error, the tuning basis of the PI parameters in the current time period is the PI parameters of the previous time period adjacent to the current time period, and the PI parameters are fixed to a unique value when the output power signal reaches the target power signal.
[0063] Specifically, the first PI parameter can be obtained through pre-tuning experiments before being fixed. As shown in Figure 8, at the moment the power signal is emitted, based on the changes in the power waveform, the PI parameter for the next time period is adjusted and tuned based on the PI parameter of the adjacent previous time period. For example, the PI parameter for time period F is tuned based on the PI parameter for time period E. The principle of parameter pre-tuning in the first PI control is existing technology and will not be elaborated here. The pre-tuning step can further improve the accuracy of the first PI parameter and reduce the problem of inaccurate fixed parameter settings caused by expert experience and other parameter setting methods.
[0064] In some optional implementations, the power adjustment method provided in this application further includes:
[0065] Step d1: When the output power signal reaches the target power signal, the system switches to a second adjustment signal based on the signal error between the output power signal and the target power signal using a second PI control method when the preset pulse control signal occurs. This second adjustment signal is then sent to the power supply's adjustment module. Specifically, when switching from the first PI control method to the second PI control method, the PI parameters for the first tuning cycle of the second PI control stage are based on the PI parameters for the pulse signal period during which the target power signal is reached in the first PI control stage.
[0066] Specifically, in this embodiment, when the output power signal reaches the target power signal, the switch from the first PI control method to the second PI control method may not be immediate. Instead, the switch may occur when the preset pulse control signal is generated. For example, the switch may occur when the first pulse control signal is generated, the switch may occur when the second pulse control signal is generated, the switch may occur when the third pulse control signal is generated, and so on. This embodiment is only an example and is not limited thereto. For example, as shown in Figure 9, when the output power signal reaches the target power signal, the algorithm switch is performed when the second pulse control signal occurs. The second PI control after the switch does not directly use the parameter of the previous tuning cycle length as the basis for PI parameter tuning. Instead, it finds the pulse signal period that reaches the target power signal during the first PI control stage and collects PI parameters within that period as the basis for parameter tuning in the first tuning cycle of the second PI control. This method ensures that each tuning cycle aligns with the generation cycle of the pulse control signal, facilitating subsequent segmented control. Furthermore, by waiting for several pulse control signals before switching to the second PI control method, the waveform deformation of the power signal during voltage drops can be fully observed through these waiting pulse control signals. This allows for a better understanding of the PI parameter adjustment pattern, enabling a more accurate analysis of the PI parameter adjustment direction during the first tuning cycle of the second PI stage. This makes the tuning target of the second PI stage clearer, faster, and more accurate, further improving the speed at which the power supply output power signal stabilizes at the target power signal, reducing adjustment time, and facilitating power supply utilization.
[0067] This embodiment also provides a power adjustment device for implementing the above embodiments and preferred embodiments; details already described will not be repeated. As used below, the term "module" can refer to a combination of software and / or hardware that performs a predetermined function. Although the devices described in the following embodiments are preferably implemented in software, hardware implementation, or a combination of software and hardware, is also possible and contemplated.
[0068] This embodiment provides a power adjustment device, as shown in Figure 10. The device includes:
[0069] The measured signal module 1001 is used to acquire the output power signal of the power supply.
[0070] The first module 1002 is used to generate a first adjustment signal based on the signal error between the output power signal and the target power signal using a first PI control method, and send the first adjustment signal to the power supply module to be adjusted. The first PI control method is a PI control method with fixed PI parameters.
[0071] The second adjustment module 1003 is used to switch to generating a second adjustment signal based on the signal error between the output power signal and the target power signal using a second PI control method when the output power signal reaches the target power signal, and to send the second adjustment signal to the power supply module to be adjusted. The second PI control method is a PI control method that allows the PI parameters to be changed at different times based on the signal error.
[0072] In some optional implementations, the second PI control method divides a preset number of time periods into tuning cycles, and the second adjustment module 1003 includes:
[0073] The waveform acquisition unit is used to acquire the output power signal waveform corresponding to the Nth time period within the current tuning cycle.
[0074] The raw parameter acquisition unit is used to acquire the raw PI parameters for the Nth time period within the previous tuning cycle;
[0075] The sub-error calculation unit is used to calculate the sub-signal error of the Nth time period within the current tuning period based on the target power signal waveform and the output power signal of the Nth time period within the current tuning period.
[0076] The new parameter tuning unit is used to adjust the original PI parameters based on the sub-signal error of the Nth time period within the current tuning period, so as to obtain the new PI parameters for the Nth time period within the current tuning period.
[0077] The second adjustment signal generation unit is used to generate the current second adjustment signal based on the new PI parameters. The current second adjustment signal is used to change the waveform of the output power signal in the Nth time period of the next tuning cycle.
[0078] The second PI parameter storage unit is used to save the PI parameters of each time period within the target tuning period separately until the complete output power signal within the target tuning period is consistent with the target power signal, and to carry over the PI parameters saved within the target tuning period to subsequent tuning periods.
[0079] Further functional descriptions of the above modules and units are the same as those in the corresponding embodiments described above, and will not be repeated here.
[0080] This application embodiment also provides a power supply having the power adjustment device shown in FIG10 above.
[0081] Please refer to Figure 11, which is a schematic diagram of a power supply structure provided in an optional embodiment of this application. As shown in Figure 11, the power supply includes: a power supply body, one or more controllers, a memory, and interfaces for connecting the various components, including high-speed interfaces and low-speed interfaces. The various components communicate with each other using different buses and can be mounted on a common motherboard or otherwise installed as needed. The controllers can process instructions executed within the power supply, including instructions stored in or on the memory to display graphical information of a GUI on an external input / output device (such as a display device coupled to the interface). In some optional embodiments, multiple controllers and / or multiple buses can be used with multiple memories and multiple storage devices, if desired. Similarly, multiple power supplies can be connected, each device providing some of the necessary operations (e.g., as a server array, a group of blade servers, or a multi-controller system).
[0082] The controller can be a central controller, a network controller, or a combination thereof. The controller may further include hardware chips. These hardware chips can be application-specific integrated circuits (ASICs), programmable logic devices (PLDs), or combinations thereof. The programmable logic devices can be complex programmable logic devices (CLPs), field-programmable gate arrays (FPGAs), general-purpose array logic (GDAs), or any combination thereof.
[0083] The memory stores instructions executable by at least one controller to cause the at least one controller to perform the method shown in the above embodiments.
[0084] The memory may include a program storage area and a data storage area. The program storage area may store the operating system and applications required for at least one function; the data storage area may store data created based on power usage. Furthermore, the memory may include high-speed random access memory and non-transient memory, such as at least one disk storage device, flash memory device, or other non-transient solid-state storage device. In some alternative embodiments, the memory may include memory remotely located relative to the controller, which can be connected to the power supply via a network. Examples of such networks include, but are not limited to, the Internet, corporate intranets, local area networks, mobile communication networks, and combinations thereof.
[0085] The memory may include volatile memory, such as random access memory; the memory may also include non-volatile memory, such as flash memory, hard disk or solid-state drive; the memory may also include a combination of the above types of memory.
[0086] This application also provides a computer-readable storage medium. The methods described in this application can be implemented in hardware or firmware, or implemented as recordable on a storage medium, or implemented as computer code downloaded over a network and originally stored on a remote storage medium or a non-transitory machine-readable storage medium and subsequently stored on a local storage medium. Thus, the methods described herein can be processed by software stored on a storage medium using a general-purpose computer, a dedicated controller, or programmable or dedicated hardware. The storage medium can be a magnetic disk, optical disk, read-only memory, random access memory, flash memory, hard disk, or solid-state drive, etc.; further, the storage medium may also include combinations of the above types of memory. It is understood that computers, controllers, microcontrollers, or programmable hardware include storage components capable of storing or receiving software or computer code. When the software or computer code is accessed and executed by the computer, controller, or hardware, the methods shown in the above embodiments are implemented.
[0087] A portion of this application can be applied as a computer program product, such as computer program instructions, which, when executed by a computer, can invoke or provide the methods and / or technical solutions according to this application through the operation of the computer. Those skilled in the art will understand that the forms in which computer program instructions exist in a computer-readable medium include, but are not limited to, source files, executable files, installation package files, etc. Correspondingly, the ways in which computer program instructions are executed by a computer include, but are not limited to: the computer directly executing the instructions, or the computer compiling the instructions and then executing the corresponding compiled program, or the computer reading and executing the instructions, or the computer reading and installing the instructions and then executing the corresponding installed program. Here, the computer-readable medium can be any available computer-readable storage medium or communication medium accessible to a computer.
[0088] Although embodiments of this application have been described in conjunction with the accompanying drawings, those skilled in the art can make various modifications and variations without departing from the spirit and scope of this application, and all such modifications and variations fall within the scope defined by the appended claims.
Claims
1. A method for adjusting power supply power, characterized in that, A controller applied to a power supply, the method comprising: Obtain the output power signal of the power supply; Based on the signal error between the output power signal and the target power signal, a first adjustment signal is generated using a first PI control method, and the first adjustment signal is sent to the power supply module to be adjusted; the first PI control method is a PI control method with fixed PI parameters. When the output power signal reaches the target power signal, the system switches to generating a second adjustment signal based on the signal error between the output power signal and the target power signal using a second PI control method, and sends the second adjustment signal to the power supply's adjustment module; the second PI control method is a PI control method that allows PI parameters to be different at different times based on the signal error.
2. The method according to claim 1, characterized in that, The second PI control method divides a preset number of time periods into tuning periods. When tuning parameters based on the signal error, the PI parameters in the current tuning period are tuned based on the PI parameters in the previous tuning period.
3. The method according to claim 2, characterized in that, The step of generating a second adjustment signal using a second PI control method based on the signal error between the output power signal and the target power signal includes: Obtain the output power signal waveform corresponding to the Nth time period within the current tuning cycle; Obtain the original PI parameters for the Nth time period within the previous tuning cycle; The sub-signal error in the Nth time period within the current tuning period is calculated based on the target power signal waveform and the output power signal in the Nth time period within the current tuning period. Based on the sub-signal error of the Nth time period within the current tuning period, the original PI parameters are adjusted to obtain the new PI parameters for the Nth time period within the current tuning period. The current second adjustment signal is generated based on the new PI parameters. The current second adjustment signal is used to change the waveform of the output power signal in the Nth time period of the next tuning cycle.
4. The method according to claim 3, characterized in that, The length of the tuning period is equal to the time it takes for the controller to output a pulse control signal from the end.
5. The method according to claim 2 or 4, characterized in that, The method further includes: Determine the target time period within each tuning cycle during which the output power signal meets the preset jitter conditions; For the target time period, the PI parameters are adjusted using the second PI control method. For non-target time periods that do not meet the preset jitter conditions, the parameters are set to the fixed PI parameters in the first PI control method.
6. The method according to claim 4, characterized in that, The method further includes: When the first PI control method is switched to the second PI control method, the first tuning cycle of the second PI control stage is based on the PI parameter of the target time length within the first PI control stage. The target time length is the same as the length of the first tuning cycle, and the end of the target time length is connected to the switching time.
7. The method according to claim 1, characterized in that, In the first PI control method, the fixed PI parameters are obtained through pre-tuning. When pre-tuning the parameters according to the signal error, the tuning basis of the PI parameters in the current time period is the PI parameters of the previous time period adjacent to the current time period. Furthermore, when the output power signal reaches the target power signal, the PI parameters are fixed to a unique value.
8. A power supply adjustment device, characterized in that, Applied to a controller, the device includes: The measured signal module is used to acquire the output power signal of the power supply. The first module is used to generate a first adjustment signal based on the signal error between the output power signal and the target power signal using a first PI control method, and send the first adjustment signal to the adjustment module of the power supply. The first PI control method is a PI control method with fixed PI parameters. The second adjustment module is used to switch to generating a second adjustment signal based on the signal error between the output power signal and the target power signal using a second PI control method when the output power signal reaches the target power signal, and to send the second adjustment signal to the adjustment module of the power supply. The second PI control method is a PI control method that allows the PI parameters to be changed at different times based on the signal error.
9. A power supply, characterized in that, include: The power supply unit, memory, and controller are interconnected. The memory stores computer instructions, and the controller executes the computer instructions to perform the method described in any one of claims 1 to 7 to adjust the output signal of the power supply unit.
10. A computer-readable storage medium, characterized in that, The computer-readable storage medium stores computer instructions for causing the computer to perform the method of any one of claims 1 to 7.