A wide range regulating power supply voltage stabilization control method and control system

Abstract

The present invention relates to the technical field of power supply voltage regulation, and specifically discloses a wide-range regulating power supply voltage regulation control method and control system, which calculate and obtain a standard positive voltage error comprehensive value; compare the standard positive voltage error comprehensive value with an error signal threshold to obtain an error signal; calculate and obtain the voltage change rate at the end of a monitoring period T; regulate the output voltage so that the output voltage change rate is reduced to 0, and adjust the output voltage to a voltage regulated value, and can adaptively regulate based on a preset voltage regulation time value, so that the output of the power supply voltage can better meet different usage scenarios, and can adaptively set the regulation time according to usage requirements, so that the power supply transformer can quickly regulate the stability after an abnormality occurs, and has better adaptability, is suitable for a variety of voltage change conditions, and is more accurately regulated.

Description

Technical Field

[0001] The present invention relates to the technical field of power supply voltage regulation, and in particular to a wide range regulating power supply voltage regulation control method and control system. Background Art

[0002] As the size of communication power supplies continues to decrease and power density continues to increase, their control methods tend to be more low-cost and high-efficiency digital control technology. In digitally controlled power supplies, in order to improve the bandwidth and gain of the control loop, fast links are usually introduced into the loop. Fast links will improve the loop response, but at the same time will reduce the output voltage regulation ability of the power supply. Under some relatively harsh working conditions, it cannot meet the industry standard requirements for voltage regulation accuracy and load regulation rate.

[0003] In the existing power supply voltage regulation accuracy control method, a current sampling compensation unit is usually added to generate a corresponding compensation voltage according to the current sampling compensation unit;

[0004] However, the existing control scheme for power supply voltage regulation accuracy has low control accuracy and cannot achieve more adaptive change adjustment when facing various states of power supply output voltage changes, resulting in long adjustment time, complex circuit control, and inability to perform fast and accurate adjustment according to different application scenarios. Summary of the invention

[0005] The object of the present invention is to provide a wide range regulating power supply voltage stabilization control method and control system to solve the above-mentioned background problems.

[0006] The purpose of the present invention can be achieved through the following technical solutions:

[0007] A wide range regulating power supply voltage stabilization control method, comprising: dividing a monitoring period T into unit time t, and measuring the voltage value at each time point e, and marking it as U e ; Wherein, e is 1, 2, 3, ..., and e is a positive integer; At the same time, the voltage deviation data is obtained, and the standard positive voltage error comprehensive value Uzzb is calculated and obtained;

[0008] Compare the standard positive voltage error comprehensive value Uzzb with the error signal threshold value Uwc; if the standard positive voltage error comprehensive value Uzzb is less than or equal to the error signal threshold value Uwc, generate a stable signal; if the standard positive voltage error comprehensive value Uzzb is greater than the error signal threshold value Uwc, generate an error signal;

[0009] Based on the error signal, the voltage change rate VU at the end of the monitoring period T is calculated. T ; Based on the voltage change rate VU T , determine the voltage value U at the e-1th time point e-1 The output voltage U at the end of the monitoring period Te size;

[0010] If U e Greater than U e-1 , generate a speed reduction and voltage regulation signal;

[0011] If U e Less than U e-1 , generate a speed-increasing voltage regulation signal;

[0012] If U e Equal to U e-1 , generating a stable voltage regulation signal;

[0013] Based on the control signal under the speed reduction voltage regulation signal, the output voltage is adjusted so that the output voltage change rate is reduced to 0, and the output voltage is adjusted to the voltage regulation value;

[0014] Based on the control signal under the speed-increasing voltage regulation signal, the output voltage is regulated. Since the rate of change of the output voltage is in a decreasing state, the rate of change of the output voltage is increased to 0, and the output voltage is adjusted to the voltage regulated value;

[0015] Based on the steady voltage regulation signal, the output voltage is adjusted to the voltage stability value Uwd and maintained.

[0016] As a further solution of the present invention: the voltage deviation data includes: a voltage stabilization value Uwd, a voltage deviation extreme value Ucj and an error signal threshold value Uwc;

[0017] The calculation method of the standard positive voltage error comprehensive value Uzzb is:

[0018] Get the voltage stabilization value Uwd through Upcz e =|U e -Uwd|Calculate the voltage deviation value Upcz at each time point e ; Wherein, the voltage stabilization value Uwd represents the reference standard value of the circuit voltage stability state;

[0019] Get the voltage deviation extreme value Ucj; and calculate the voltage deviation value Upcz at each time point e Compare with the voltage deviation extreme value Ucj respectively to obtain the voltage deviation value Upcz e The number of time points greater than the voltage deviation extreme value Ucj is marked as f;

[0020] pass The integrated value of the standard positive voltage error Uzzb is obtained by calculation.

[0021] As a further solution of the present invention: the voltage change rate VU at the end of the monitoring period T T The calculation method is:

[0022] Get the voltage value U at the e-1th time point in the monitoring period T e-1 ; At the same time, the output voltage at the end of the monitoring period T is obtained and marked as U e ;

[0023] pass Calculate the voltage change rate VU at the end of the monitoring period T T .

[0024] As a further solution of the present invention: based on the speed reduction voltage regulation signal, the output voltage U at the end of the monitoring period T is e Compare with the voltage stabilization value Uwd;

[0025] If U e If it is greater than Uwd, a speed reduction and voltage reduction signal is generated;

[0026] If U e Equal to Uwd, generating a speed reduction and voltage stabilization signal;

[0027] If U e When it is less than Uwd, a speed reduction control voltage signal is generated.

[0028] As a further solution of the present invention: based on the speed-up voltage regulation signal, the output voltage U at the end of the monitoring period T is e Compare with the voltage stabilization value Uwd;

[0029] If U e Less than Uwd, a speed-up and voltage-boosting signal is generated;

[0030] If U e Equal to Uwd, generating a speed-up and voltage-stabilizing signal;

[0031] If U e Greater than Uwd, a speed-increasing voltage control signal is generated.

[0032] As a further solution of the present invention: based on the stable voltage regulation signal, the output voltage U at the end of the monitoring period T is e Compare with the voltage stabilization value Uwd;

[0033] If U e Less than Uwd, generating a steady boost signal;

[0034] If U e Equal to Uwd, generating a stable holding signal; keeping the output voltage state unchanged;

[0035] If U e Greater than Uwd, a steady voltage-falling signal is generated.

[0036] As a further solution of the present invention: based on the speed reduction and voltage reduction signal, the voltage change rate VU at the end of the monitoring period T is obtained. T ; Based on the switch tube conduction time variation model, through The switch tube conduction time adjustment value DTs is calculated, wherein α is the conduction time influence coefficient, and β is the voltage change correction coefficient;

[0037] Reduce the switch on time DTs so that the voltage change rate VU T The output voltage U at the end of the monitoring period T is reduced to 0, and the switch tube conduction time update value DTTo is obtained. e Reduce to the voltage stabilization value Uwd, obtain the preset voltage regulation time value Tksj; through Calculate and obtain the output voltage regulation rate value Vutk;

[0038] pass Calculate the switch tube conduction control adjustment time DTtk, and then reduce the switch tube conduction time update value DTTo by DTtk; and maintain the preset voltage control time Tksj, so that the output voltage U e Reduce to the voltage stabilization value Uwd, and then output the voltage with the switch tube conduction time update value DTTo;

[0039] Based on the speed reduction and voltage regulation signal, Calculate and obtain the switch tube conduction time adjustment value DTs; reduce the switch tube conduction time by DTs to make the voltage change rate VU T When the switch is turned on, the switch is turned on for a certain period of time, and the switch is turned on for a certain period of time.

[0040] Based on the speed reduction control voltage signal, calculate the voltage change rate VU T Get off U e The time required to increase to Uwd is the pressure control time Tsg; Then at the end of the voltage control time Tsg, the voltage change rate VU T Reduced to 0; passed Calculate and obtain the switch tube conduction time adjustment value DTs; reduce the switch tube conduction time by DTs to make the voltage change rate VU T Drops to 0, obtains the switch tube conduction time update value DTTo, and maintains this state for voltage output.

[0041] As a further solution of the present invention: based on the speed-up boost signal, the voltage change rate VU at the end of the monitoring period T is obtained. T ;pass Calculate and obtain the switch tube conduction time adjustment value DTs;

[0042] Then increase the switch on time DTs so that the voltage change rate VU T Increases to 0, obtains the switch tube conduction time update value DTTo, and the output voltage U at the end of the monitoring period T e Increase to the voltage stabilization value Uwd, obtain the preset voltage regulation time value Tksj; through Calculate and obtain the output voltage regulation rate value Vutk;

[0043] pass Calculate the switch tube conduction control adjustment time DTtk, increase the switch tube conduction time update value DTTo by DTtk; and maintain the preset voltage control time Tksj so that the output voltage U e Increase to the voltage stabilization value Uwd, and then output the voltage with the switch tube conduction time update value DTTo;

[0044] Based on the speed-up voltage regulation signal, Calculate and obtain the switch tube conduction time adjustment value DTs; increase the switch tube conduction time by DTs to make the voltage change rate VU T Increases to 0, at which time the switch tube conduction time update value DTTo is obtained, and this state is maintained for voltage output;

[0045] Based on the speed-up control voltage signal, calculate the voltage change rate VU T Get off U e The time required to reduce to Uwd is the pressure control time Tsg, where: Then at the end of the voltage control time Tsg, the voltage change rate VU T Change it to 0, through Calculate and obtain the switch tube conduction time adjustment value DTs; increase the switch tube conduction time by DTs to make the voltage change rate VU T Becomes 0, at which time the switch tube conduction time update value DTTo is obtained, and this state is maintained for voltage output.

[0046] As a further solution of the present invention: based on the stable boost signal, a preset voltage control time value Tksj is obtained; and based on the preset voltage control time value, by Calculate the output voltage control rate value Vutk; then Calculate the switch tube conduction control adjustment time DTtk, increase the switch tube conduction time DTtk; maintain the preset voltage control time Tksj, so that the output voltage U e Increase to the voltage regulation value Uwd, then reduce the switch tube conduction time DTtk, and then maintain a stable output voltage;

[0047] Based on the stable voltage reduction signal, a preset voltage control time value Tksj is obtained; Calculate and obtain the output voltage regulation rate value Vutk;

[0048] pass Calculate the switch tube conduction control adjustment time DTtk, reduce the switch tube conduction time DTtk; and maintain the preset voltage control time Tksj, so that the output voltage U e Reduce it to the voltage regulation value Uwd, then increase the switch tube conduction time DTtk, and then maintain a stable output voltage.

[0049] As a further solution of the present invention: a wide range regulating power supply voltage stabilization control system, comprising:

[0050] Data acquisition module: used to divide the monitoring period T into unit time t, and measure the voltage value at each time point e, and mark it as U e ; Wherein, e is 1, 2, 3, ..., and e is a positive integer; At the same time, the voltage deviation data is obtained, and the standard positive voltage error comprehensive value Uzzb is calculated and obtained;

[0051] Data processing module: used to compare the standard positive voltage error comprehensive value Uzzb with the error signal threshold value Uwc; if the standard positive voltage error comprehensive value Uzzb is less than or equal to the error signal threshold value Uwc, a stable signal is generated; if the standard positive voltage error comprehensive value Uzzb is greater than the error signal threshold value Uwc, an error signal is generated;

[0052] Data determination module: Based on the error signal, calculate the voltage change rate VU at the end of the monitoring period T T ; Based on the voltage change rate VU T , determine the voltage value U at the e-1th time point e-1 The output voltage U at the end of the monitoring period T e The size of U e Greater than U e-1 , generate a speed reduction and voltage regulation signal; if U e Less than U e-1 , generate a speed-increasing voltage regulation signal; if U e Equal to U e-1 , generating a stable voltage regulation signal;

[0053] Signal processing module: Based on the control signal under the speed-down voltage regulation signal, the output voltage is adjusted so that the output voltage change rate is reduced to 0, and the output voltage is adjusted to the voltage regulated value; based on the control signal under the speed-up voltage regulation signal, the output voltage is adjusted. Since the output voltage change rate is in a decreasing state, the output voltage change rate is increased to 0, and the output voltage is adjusted to the voltage regulated value; based on the smooth voltage regulation signal, the output voltage is adjusted to the voltage stable value Uwd, and maintained.

[0054] Beneficial effects of the present invention:

[0055] In the present invention, the output voltage in the process of power supply output is monitored to determine the change state of the output voltage in the working process, and then determine whether the output voltage is in a stable state, and then the output voltage is further analyzed and regulated based on the change state of the output voltage; after the output voltage fluctuates, the open tube conduction time adjustment value is calculated and obtained based on the preset voltage control time value, and then the open tube conduction time is regulated to control the output voltage of the power supply to be adjusted quickly and accurately. At the same time, in the adjustment process, the change rate of the output voltage is first regulated to adjust the change rate of the output voltage to a stable state, and then based on the stabilized output voltage value, the voltage control change rate of the output voltage adjusted to the voltage stabilization value is calculated based on the preset voltage control time value, and the control time of the switch tube conduction time is further calculated to better ensure the stability of the power supply voltage in the output working state. In addition, in the control process, adaptive control can be performed based on the preset voltage control time value, so that the output of the power supply voltage can better meet different usage scenarios, and the control time can be adaptively set according to the use requirements, so that the power supply transformer can quickly adjust the stability after an abnormality occurs, the adaptability is better, it is suitable for a variety of voltage change conditions, and the adjustment is more accurate. BRIEF DESCRIPTION OF THE DRAWINGS

[0056] The present invention will be further described below in conjunction with the accompanying drawings.

[0057] Figure 1 It is a schematic diagram of the workflow of the present invention;

[0058] Figure 2 It is a system block diagram of the present invention. DETAILED DESCRIPTION

[0059] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0060] See also Figure 1 As shown, the present invention is a wide range regulating power supply voltage stabilization control method, comprising the following steps:

[0061] Step 01: Divide the monitoring period T into unit time t, and measure the voltage value at each time point e, and mark it as U e; Wherein, e is 1, 2, 3, ..., and e is a positive integer; At the same time, voltage deviation data is obtained, wherein the voltage deviation data includes: voltage stabilization value Uwd, voltage deviation extreme value Ucj and error signal threshold value Uwc; Calculate and obtain the standard positive voltage error comprehensive value Uzzb;

[0062] Specifically, they include:

[0063] Step 011: Based on the voltage stabilization value Uwd, through Upcz e =|U e -Uwd|Calculate the voltage deviation value Upcz at each time point e ; Wherein, the voltage stabilization value Uwd represents the reference standard value of the circuit voltage stability state;

[0064] Step 012: Obtain the voltage deviation extreme value Ucj; and calculate the voltage deviation value Upcz at each time point e Compare with the voltage deviation extreme value Ucj respectively to obtain the voltage deviation value Upcz e The number of time points greater than the voltage deviation extreme value Ucj is marked as f;

[0065] Step 013: Pass Calculate and obtain the comprehensive value of the standard positive voltage error Uzzb;

[0066] Step 02: Compare the standard positive voltage error comprehensive value Uzzb with the error signal threshold value Uwc;

[0067] If the standard positive voltage error integrated value Uzzb is less than or equal to the error signal threshold value Uwc, a stable signal is generated;

[0068] If the standard positive voltage error integrated value Uzzb is greater than the error signal threshold value Uwc, an error signal is generated;

[0069] Step 03: Based on the error signal, calculate the voltage change rate VU at the end of the monitoring period T T ;

[0070] Specifically include:

[0071] Get the voltage value U at the e-1th time point in the monitoring period T e-1 ; At the same time, the output voltage at the end of the monitoring period T is obtained and marked as U e ;

[0072] pass Calculate the voltage change rate VU at the end of the monitoring period T T ;

[0073] Step 04: Based on the voltage change rate VU T , determine the voltage value U at the e-1th time pointe-1 The output voltage U at the end of the monitoring period T e size;

[0074] If U e Greater than U e-1 , then the voltage change rate VU at the end of the monitoring period T T If the voltage is greater than 0, that is, the voltage is in an increasing state, a speed reduction voltage regulation signal is generated and step 05 is executed; wherein the speed reduction voltage regulation signal includes: a speed reduction voltage reduction signal, a speed reduction voltage stabilization signal and a speed reduction voltage control signal;

[0075] If U e Less than U e-1 , then the voltage change rate VU at the end of the monitoring period T T If it is less than 0, that is, the voltage is in a decreasing state, a speed-up voltage regulation signal is generated and step 06 is executed; the speed-up voltage regulation signal includes a speed-up voltage boost signal, a speed-up voltage stabilization signal and a speed-up voltage control signal;

[0076] If U e Equal to U e-1 , then the voltage change rate VU at the end of the monitoring period T T =0, that is, the voltage is in a constant voltage state, a steady voltage regulation signal is generated and step 07 is executed; the steady voltage regulation signal includes a steady voltage boost signal, a steady voltage hold signal and a steady voltage drop signal;

[0077] Step 05: Based on the speed reduction voltage regulation signal, the output voltage U at the end of the monitoring period T is further monitored. e Compare with the voltage stabilization value Uwd;

[0078] If U e Greater than Uwd, at this time, it means that the output voltage is greater than the voltage regulation value and is in an increasing state, then the control should be performed immediately to reduce the output voltage, and a speed reduction and voltage reduction signal is generated at this time;

[0079] If U e Equal to Uwd, at this time, it means that the output voltage is equal to the voltage stability value, but due to the voltage change rate VU T If the output voltage is greater than 0, control should be performed immediately to prevent the output voltage from increasing further. e Equal to Uwd, that is, the output voltage remains stable; at this time, a speed reduction and voltage stabilization signal is generated;

[0080] If U e Less than Uwd, at this time, it means that the output voltage is less than the voltage stability value, but due to the voltage change rate VU T is greater than 0, then in U e When it rises to Uwd, adjust and maintain U e Equal to Uwd, so that the output voltage remains stable; generate a speed reduction voltage control signal;

[0081] Step 06: Based on the speed-up voltage regulation signal, the output voltage U at the end of the monitoring period T is e Compare with the voltage stabilization value Uwd;

[0082] If U e If it is less than Uwd, it means that the output voltage is less than the voltage regulation value and is in a decreasing state. Then the control should be performed immediately to increase the output voltage. At this time, a speed-up and voltage-boosting signal is generated.

[0083] If U e Equal to Uwd, indicating that the output voltage is equal to the voltage stability value, but due to the voltage change rate VU T Less than 0, in order to prevent the output voltage from further decreasing, regulation should be performed immediately to keep U e Equal to Uwd, that is, the output voltage remains stable; at this time, a speed-up and voltage-stabilizing signal is generated;

[0084] If U e is greater than Uwd, indicating that the output voltage is greater than the voltage stability value, but due to the voltage change rate VU T If U is less than 0, e When it drops to Uwd, adjust and maintain U e Equal to Uwd, so that the output voltage remains stable; generate a speed-increasing voltage control signal;

[0085] Step 07: Based on the stable voltage regulation signal, the output voltage U at the end of the monitoring period T is e Compare with the voltage stabilization value Uwd;

[0086] If U e If it is less than Uwd, it means that the output voltage is small, but the output voltage change is relatively stable. At this time, the output voltage is adjusted to the voltage regulation value Uwd to ensure that the subsequent output voltage is in a relatively stable state. The output voltage is directly adjusted from Uwd to e Increase to Uwd; generate a stable boost signal;

[0087] If U e Equal to Uwd, indicating that the output voltage is the same as the voltage regulation value, and the rate of change at this moment is 0, maintaining a stable state, generating a stable holding signal; keeping the output voltage state unchanged;

[0088] If U e If it is greater than Uwd, it means that the output voltage is large, but the output voltage change is relatively stable. At this time, the output voltage is adjusted to the voltage stability value Uwd to ensure that the subsequent output voltage is in a relatively stable state. At this time, the output voltage is directly adjusted from U e It only needs to be reduced to the voltage stable value Uwd to generate a stable voltage reduction signal.

[0089] By monitoring the output voltage during the power supply output process, we can determine the change state of the output voltage during the working process, and then determine whether the output voltage is in a stable state. Based on the change state of the output voltage, the output voltage is further analyzed and regulated so that the output voltage of the power supply can remain in a more stable state within a certain adjustment range.

[0090] Embodiment 2

[0091] Based on the above embodiments, the present invention is a wide range regulating power supply voltage stabilization control method, including a speed reduction voltage regulation control method:

[0092] Based on the control signal under the speed-down voltage regulation signal, the output voltage is adjusted so that the output voltage change rate is reduced to 0, and the output voltage is adjusted to the voltage regulated value so that the subsequent output voltage remains in a relatively stable state;

[0093] Specific:

[0094] Based on the speed reduction and voltage reduction signal, the voltage change rate VU at the end of the monitoring period T is obtained T ; Based on the switch tube conduction time variation model, through The switch tube conduction time adjustment value DTs is calculated, wherein α is the conduction time influence coefficient, and β is the voltage change correction coefficient;

[0095] Then the switch conduction time is reduced to DTs, so that the voltage change rate VU T When the switch conduction time is updated, the output voltage U at the end of the monitoring period T is obtained. e Reduce to the voltage stabilization value Uwd, at this time, obtain the preset voltage regulation time value Tksj;

[0096] Based on the preset voltage regulation time Tksj, Calculate and obtain the output voltage regulation rate value Vutk;

[0097] Then, by Calculate the switch tube conduction control adjustment time DTtk, and then reduce the switch tube conduction time update value DTTo by DTtk; and maintain the preset voltage control time Tksj, so that the output voltage U e Reduce to the voltage stabilization value Uwd, and then output the voltage with the switch tube conduction time update value DTTo;

[0098] Based on the speed reduction voltage regulation signal, due to U e =Uwd, therefore, we only need to monitor the voltage change rate VU at time T of the period T It can be reduced to 0. At this time, based on the switch tube conduction time change model, through Calculate and obtain the switch tube conduction time adjustment value DTs; where α is the conduction time influence coefficient, β is the voltage change correction coefficient, and then reduce the switch tube conduction time by DTs to make the voltage change rate VU T When the switch is turned on, the switch is turned on for a certain period of time, and the switch is turned on for a certain period of time.

[0099] Based on the speed reduction voltage control signal, due to the voltage change rate VU T Greater than 0, but U e is less than Uwd, therefore, the voltage change rate VU is calculated T Get off U e The time required to increase to Uwd is the pressure control time Tsg; Then at the end of the voltage control time Tsg, the voltage change rate VU T can be reduced to 0; at this time, based on the switch tube conduction time variation model, through Calculate and obtain the switch tube conduction time adjustment value DTs; where α is the conduction time influence coefficient, β is the voltage change correction coefficient, and then reduce the switch tube conduction time by DTs to make the voltage change rate VU T When the switch is turned on, the switch is turned on for a certain period of time, and the switch is turned on for a certain period of time.

[0100] Based on the control signal under the speed-increasing voltage regulation signal, the output voltage is adjusted. Since the rate of change of the output voltage is in a decreasing state, the rate of change of the output voltage is increased to 0, and the output voltage is adjusted to the voltage regulated value, so that the subsequent output voltage remains in a relatively stable state;

[0101] Specific:

[0102] Based on the speed-up boost signal, the voltage change rate VU at the end of the monitoring period T is obtained. T ; Based on the switch tube conduction time variation model, through The switch tube conduction time adjustment value DTs is calculated, wherein α is the conduction time influence coefficient, and β is the voltage change correction coefficient;

[0103] Then increase the switch on time DTs so that the voltage change rate VU T Increases to 0, at this time, obtain the switch tube conduction time update value DTTo, then, need to monitor the output voltage U at the end of the cycle T e Increase to the voltage stabilization value Uwd, at this time, obtain the preset voltage regulation time value Tksj;

[0104] Based on the preset voltage regulation time Tksj, Calculate and obtain the output voltage regulation rate value Vutk;

[0105] Then, by Calculate the switch tube conduction control adjustment time DTtk, and then increase the switch tube conduction time update value DTTo by DTtk; and maintain the preset voltage control time Tksj, so that the output voltage U e Increase to the voltage stabilization value Uwd, and then output the voltage with the switch tube conduction time update value DTTo;

[0106] Based on the speed-up voltage regulation signal, due to U e =Uwd, therefore, we only need to monitor the voltage change rate VU at time T of the period T Increase to 0. At this time, based on the switch tube conduction time variation model, Calculate and obtain the switch tube conduction time adjustment value DTs; where α is the conduction time influence coefficient, β is the voltage change correction coefficient, and then increase the switch tube conduction time by DTs to make the voltage change rate VU T Increases to 0, at which time the switch tube conduction time update value DTTo is obtained, and this state is maintained for voltage output;

[0107] Based on the speed-up control voltage signal, due to the voltage change rate VU T Less than 0, but U e Greater than Uwd, therefore, the voltage change rate VU is calculated T Get off U e The time required to reduce to Uwd is the pressure control time Tsg, where: Then at the end of the voltage control time Tsg, the voltage change rate VU T Change to 0. At this time, based on the switch tube conduction time variation model, through Calculate and obtain the switch tube conduction time adjustment value DTs; where α is the conduction time influence coefficient, β is the voltage change correction coefficient, and then increase the switch tube conduction time by DTs to make the voltage change rate VU T becomes 0, at which time the switch tube conduction time update value DTTo is obtained, and this state is maintained for voltage output;

[0108] Based on the stable voltage regulation signal, the output voltage is adjusted to the voltage stability value Uwd and maintained;

[0109] Specific:

[0110] Based on the steady boost signal, a preset voltage control time value Tksj is obtained; and based on the preset voltage control time value, through Calculate the output voltage control rate value Vutk; then Calculate the switch tube conduction control adjustment time DTtk, then increase the switch tube conduction time DTtk; and maintain the preset voltage control time Tksj, so that the output voltage U e Increase to the voltage regulation value Uwd, then reduce the switch tube conduction time DTtk, and then maintain a stable output voltage;

[0111] Based on the stable voltage reduction signal, a preset voltage control time value Tksj is obtained; and based on the preset voltage control time value, through Calculate and obtain the output voltage regulation rate value Vutk;

[0112] Then, by Calculate the switch tube conduction control adjustment time DTtk, and then reduce the switch tube conduction time DTtk; and maintain the preset voltage control time Tksj, so that the output voltage U e Reduce it to the voltage regulation value Uwd, then increase the switch tube conduction time DTtk, and then maintain a stable output voltage.

[0113] After the output voltage fluctuates, the open-tube conduction time adjustment value is calculated and obtained based on the set preset voltage control time value, and then the open-tube conduction time is controlled to control the output voltage of the power supply so that it can be adjusted quickly and accurately. At the same time, during the adjustment process, the change rate of the output voltage is first regulated to adjust the change rate of the output voltage to a stable state, and then based on the stabilized output voltage value, the voltage control change rate for adjusting the output voltage to the voltage stabilization value is calculated with the preset voltage control time value, and the control time of the switch tube conduction time is further calculated to better ensure the stability of the power supply voltage in the output working state. Moreover, during the control process, adaptive control can be performed based on the preset voltage control time value to better make the output of the power supply voltage meet different usage scenarios, and the control time can be adaptively set according to the usage requirements, so that the power transformer can quickly adjust the stability after an abnormality occurs, with better adaptability, suitable for various voltage changes, and more precise adjustment.

[0114] Embodiment 3

[0115] In the above embodiment, the output voltage is regulated by adjusting the conduction time of the switch tube. Specifically, regarding the control of the change of the output voltage by the conduction time of the switch tube, the specific process is to adjust the duty cycle of the switch, that is, the ratio of the conduction time to the total cycle, to achieve the change regulation of the output voltage; when the switch tube is turned on, the current is allowed to pass, so that the inductor stores energy or the capacitor is charged, thereby changing the voltage in the circuit; when the switch tube is turned off, the current is prevented from passing;

[0116] Therefore, reducing the on-time of the switch tube can reduce the output voltage; increasing the on-time of the switch tube can increase the output voltage;

[0117] Regarding the construction method of the switch tube conduction time variation model, this embodiment discloses the following construction method, which specifically includes:

[0118] Obtain historical control data sets, including historical output voltage U ls , Historical switch tube conduction control adjustment time DTs ls And the historical voltage change rate VU TS , and then train the historical control data set through Calculate and obtain the on-time influence coefficient α and voltage change correction coefficient β; further obtain the switch tube on-time change model

[0119] Embodiment 4

[0120] Reference Figure 2 As shown, based on the above embodiments, this embodiment discloses a wide range regulating power supply voltage stabilization control system, including:

[0121] Data acquisition module: used to divide the monitoring period T into unit time t, and measure the voltage value at each time point e, and mark it as U e ; Wherein, e is 1, 2, 3, ..., and e is a positive integer; At the same time, the voltage deviation data is obtained, and the standard positive voltage error comprehensive value Uzzb is calculated and obtained;

[0122] Data processing module: used to compare the standard positive voltage error comprehensive value Uzzb with the error signal threshold value Uwc; if the standard positive voltage error comprehensive value Uzzb is less than or equal to the error signal threshold value Uwc, a stable signal is generated; if the standard positive voltage error comprehensive value Uzzb is greater than the error signal threshold value Uwc, an error signal is generated;

[0123] Data determination module: Based on the error signal, calculate the voltage change rate VU at the end of the monitoring period T T ; Based on the voltage change rate VU T , determine the voltage value U at the e-1th time point e-1 The output voltage U at the end of the monitoring period T e The size of U e Greater than U e-1 , generate a speed reduction and voltage regulation signal; if U e Less than U e-1 , generate a speed-increasing voltage regulation signal; if U e Equal to U e-1 , generating a stable voltage regulation signal;

[0124] Signal processing module: Based on the control signal under the speed-down voltage regulation signal, the output voltage is adjusted so that the output voltage change rate is reduced to 0, and the output voltage is adjusted to the voltage regulated value; based on the control signal under the speed-up voltage regulation signal, the output voltage is adjusted. Since the output voltage change rate is in a decreasing state, the output voltage change rate is increased to 0, and the output voltage is adjusted to the voltage regulated value; based on the smooth voltage regulation signal, the output voltage is adjusted to the voltage stable value Uwd, and maintained.

[0125] The above is a detailed description of an embodiment of the present invention, but the content is only a preferred embodiment of the present invention and cannot be considered to limit the scope of implementation of the present invention. All equivalent changes and improvements made within the scope of the present invention should still fall within the scope of the patent coverage of the present invention.

Claims

1. A wide range regulating power supply voltage stabilization control method, characterized in that: The following steps are included: the monitoring period T is divided into unit time t, and the voltage value at each time point e is measured and marked as U e ; Wherein, e is 1, 2, 3, ..., and e is a positive integer; At the same time, the voltage deviation data is obtained, and the standard positive voltage error comprehensive value Uzzb is calculated and obtained; The voltage deviation data includes: voltage stabilization value Uwd, voltage deviation extreme value Ucj and error signal threshold value Uwc; The calculation method of the standard positive voltage error comprehensive value Uzzb is: Get the voltage stabilization value Uwd through Upcz e =|U e -Uwd|Calculate the voltage deviation value Upcz at each time point e ; Wherein, the voltage stabilization value Uwd represents the reference standard value of the circuit voltage stability state; Get the voltage deviation extreme value Ucj; and calculate the voltage deviation value Upcz at each time point e Compare with the voltage deviation extreme value Ucj respectively to obtain the voltage deviation value Upcz e The number of time points greater than the voltage deviation extreme value Ucj is marked as f; pass Calculate and obtain the comprehensive value of the standard positive voltage error Uzzb; Compare the standard positive voltage error comprehensive value Uzzb with the error signal threshold value Uwc; if the standard positive voltage error comprehensive value Uzzb is less than or equal to the error signal threshold value Uwc, generate a stable signal; if the standard positive voltage error comprehensive value Uzzb is greater than the error signal threshold value Uwc, generate an error signal; Based on the error signal, the voltage change rate VU at the end of the monitoring period T is calculated. T ; Based on the voltage change rate VU T , determine the voltage value U at the e-1th time point e-1 The output voltage U at the end of the monitoring period T e size; If U e Greater than U e-1 , generate a speed reduction and voltage regulation signal; If U e Less than U e-1 , generate a speed-increasing voltage regulation signal; If U e Equal to U e-1 , generating a stable voltage regulation signal; Based on the control signal under the speed reduction voltage regulation signal, the output voltage is adjusted so that the output voltage change rate is reduced to 0, and the output voltage is adjusted to the voltage regulation value; Based on the control signal under the speed-increasing voltage regulation signal, the output voltage is regulated. Since the rate of change of the output voltage is in a decreasing state, the rate of change of the output voltage is increased to 0, and the output voltage is adjusted to the voltage regulated value; Based on the steady voltage regulation signal, the output voltage is adjusted to the voltage stability value Uwd and maintained.

2. A wide range regulating power supply voltage stabilization control method according to claim 1, characterized in that: The voltage change rate VU at the end of the monitoring period T T The calculation method is: Get the voltage value U at the e-1th time point in the monitoring period T e-1 ; At the same time, the output voltage at the end of the monitoring period T is obtained and marked as U e ; pass Calculate the voltage change rate VU at the end of the monitoring period T T .

3. The method for controlling voltage stabilization of a wide range regulating power supply according to claim 1, characterized in that: Based on the speed reduction voltage regulation signal, the output voltage U at the end of the monitoring period T is e Compare with the voltage stabilization value Uwd; If U e If it is greater than Uwd, a speed reduction and voltage reduction signal is generated; If U e Equal to Uwd, generating a speed reduction and voltage stabilization signal; If U e When it is less than Uwd, a speed reduction control voltage signal is generated.

4. The method for controlling voltage stabilization of a wide range regulating power supply according to claim 1, characterized in that: Based on the speed-up voltage regulation signal, the output voltage U at the end of the monitoring period T is e Compare with the voltage stabilization value Uwd; If U e Less than Uwd, a speed-up and voltage-boosting signal is generated; If U e Equal to Uwd, generating a speed-up and voltage-stabilizing signal; If U e Greater than Uwd, a speed-increasing voltage control signal is generated.

5. The method for controlling voltage stabilization of a wide range regulating power supply according to claim 1, characterized in that: Based on the stable voltage regulation signal, the output voltage U at the end of the monitoring period T is e Compare with the voltage stabilization value Uwd; If U e Less than Uwd, generating a steady boost signal; If U e Equal to Uwd, generating a stable holding signal; keeping the output voltage state unchanged; If U e Greater than Uwd, a steady voltage-falling signal is generated.

6. A wide range regulating power supply voltage stabilization control method according to claim 3, characterized in that: Based on the speed reduction and voltage reduction signal, the voltage change rate VU at the end of the monitoring period T is obtained T ; Based on the switch tube conduction time variation model, through The switch tube conduction time adjustment value DTs is calculated, wherein α is the conduction time influence coefficient, and β is the voltage change correction coefficient; Reduce the switch on time DTs so that the voltage change rate VU T The output voltage U at the end of the monitoring period T is reduced to 0, and the switch tube conduction time update value DTTo is obtained. e Reduce to the voltage stabilization value Uwd, obtain the preset voltage regulation time value Tksj; through Calculate and obtain the output voltage regulation rate value Vutk; pass Calculate the switch tube conduction control adjustment time DTtk, and then reduce the switch tube conduction time update value DTTo by DTtk; and maintain the preset voltage control time Tksj, so that the output voltage U e Reduce to the voltage stabilization value Uwd, and then output the voltage with the switch tube conduction time update value DTTo; Based on the speed reduction and voltage regulation signal, Calculate and obtain the switch tube conduction time adjustment value DTs; reduce the switch tube conduction time by DTs to make the voltage change rate VU T When the switch is turned on, the switch is turned on for a certain period of time, and the switch is turned on for a certain period of time. Based on the speed reduction control voltage signal, calculate the voltage change rate VU T Get off U e The time required to increase to Uwd is the pressure control time Tsg; Then at the end of the voltage control time Tsg, the voltage change rate VU T Reduced to 0; passed Calculate and obtain the switch tube conduction time adjustment value DTs; reduce the switch tube conduction time by DTs to make the voltage change rate VU T Drops to 0, obtains the switch tube conduction time update value DTTo, and maintains this state for voltage output.

7. A wide range regulating power supply voltage stabilization control method according to claim 4, characterized in that: Based on the speed-up boost signal, the voltage change rate VU at the end of the monitoring period T is obtained. T ;pass Calculate and obtain the switch tube conduction time adjustment value DTs, where α is the conduction time influence coefficient and β is the voltage change correction coefficient; Then increase the switch on time DTs so that the voltage change rate VU T Increases to 0, obtains the switch tube conduction time update value DTTo, and the output voltage U at the end of the monitoring period T e Increase to the voltage stabilization value Uwd, obtain the preset voltage regulation time value Tksj; through Calculate and obtain the output voltage regulation rate value Vutk; pass Calculate the switch tube conduction control adjustment time DTtk, where α is the conduction time influence coefficient, β is the voltage change correction coefficient, and increase the switch tube conduction time update value DTTo by DTtk; and maintain the preset voltage control time Tksj, so that the output voltage U e Increase to the voltage stabilization value Uwd, and then output the voltage with the switch tube conduction time update value DTTo; Based on the speed-up voltage regulation signal, Calculate the switch tube conduction time adjustment value DTs, where α is the conduction time influence coefficient and β is the voltage change correction coefficient; increase the switch tube conduction time by DTs to make the voltage change rate VU T Increases to 0, at which time the switch tube conduction time update value DTTo is obtained, and this state is maintained for voltage output; Based on the speed-up control voltage signal, calculate the voltage change rate VU T Get off U e The time required to reduce to Uwd is the pressure control time Tsg, where: Then at the end of the voltage control time Tsg, the voltage change rate VU T Change it to 0, through Calculate the switch tube conduction time adjustment value DTs, where α is the conduction time influence coefficient and β is the voltage change correction coefficient; increase the switch tube conduction time by DTs to make the voltage change rate VU T Becomes 0, at which time the switch tube conduction time update value DTTo is obtained, and this state is maintained for voltage output.

8. The method for controlling voltage stabilization of a wide range regulating power supply according to claim 5, characterized in that: Based on the steady boost signal, a preset voltage control time value Tksj is obtained; and based on the preset voltage control time value, through Calculate the output voltage control rate value Vutk; then Calculate the switch tube conduction control adjustment time DTtk, where α is the conduction time influence coefficient, β is the voltage change correction coefficient, increase the switch tube conduction time DTtk; maintain the preset voltage control time Tksj, so that the output voltage U e Increase to the voltage regulation value Uwd, then reduce the switch tube conduction time DTtk, and then maintain a stable output voltage; Based on the stable voltage reduction signal, a preset voltage control time value Tksj is obtained; Calculate and obtain the output voltage regulation rate value Vutk; pass Calculate the switch tube conduction control adjustment time DTtk, where α is the conduction time influence coefficient, β is the voltage change correction coefficient, reduce the switch tube conduction time DTtk; and maintain the preset voltage control time Tksj, so that the output voltage U e Reduce it to the voltage regulation value Uwd, then increase the switch tube conduction time DTtk, and then maintain a stable output voltage.

9. A wide range regulating power supply voltage stabilization control system, characterized in that: The control system is used to execute any one of the wide-range regulation power supply voltage stabilization control methods as described in claims 1 to 8, comprising: Data acquisition module: used to divide the monitoring period T into unit time t, and measure the voltage value at each time point e, and mark it as U e ; Wherein, e is 1, 2, 3, ..., and e is a positive integer; At the same time, the voltage deviation data is obtained, and the standard positive voltage error comprehensive value Uzzb is calculated and obtained; The voltage deviation data includes: voltage stabilization value Uwd, voltage deviation extreme value Ucj and error signal threshold value Uwc; The calculation method of the standard positive voltage error comprehensive value Uzzb is: Get the voltage stabilization value Uwd through Upcz e =|U e -Uwd|Calculate the voltage deviation value Upcz at each time point e ; Wherein, the voltage stabilization value Uwd represents the reference standard value of the circuit voltage stability state; Get the voltage deviation extreme value Ucj; and calculate the voltage deviation value Upcz at each time point e Compare with the voltage deviation extreme value Ucj respectively to obtain the voltage deviation value Upcz e The number of time points greater than the voltage deviation extreme value Ucj, marked as f; pass Calculate and obtain the comprehensive value of the standard positive voltage error Uzzb; Data processing module: used to compare the standard positive voltage error comprehensive value Uzzb with the error signal threshold value Uwc; if the standard positive voltage error comprehensive value Uzzb is less than or equal to the error signal threshold value Uwc, a stable signal is generated; if the standard positive voltage error comprehensive value Uzzb is greater than the error signal threshold value Uwc, an error signal is generated; Data determination module: Based on the error signal, calculate the voltage change rate VU at the end of the monitoring period T T ; Based on the voltage change rate VU T , determine the voltage value U at the e-1th time point e-1 The output voltage U at the end of the monitoring period T e The size of U e Greater than U e-1 , generate a speed reduction and voltage regulation signal; if U e Less than U e-1 , generate a speed-increasing voltage regulation signal; if U e Equal to U e-1 , generating a stable voltage regulation signal; Signal processing module: Based on the control signal under the speed-down voltage regulation signal, the output voltage is adjusted so that the output voltage change rate is reduced to 0, and the output voltage is adjusted to the voltage regulated value; based on the control signal under the speed-up voltage regulation signal, the output voltage is adjusted. Since the output voltage change rate is in a decreasing state, the output voltage change rate is increased to 0, and the output voltage is adjusted to the voltage regulated value; based on the smooth voltage regulation signal, the output voltage is adjusted to the voltage stable value Uwd, and maintained.

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