CN114142752B - Power self-adaptive adjusting method of energy storage inverter power supply and computer readable storage medium - Google Patents
Power self-adaptive adjusting method of energy storage inverter power supply and computer readable storage medium Download PDFInfo
- Publication number
- CN114142752B CN114142752B CN202111429001.4A CN202111429001A CN114142752B CN 114142752 B CN114142752 B CN 114142752B CN 202111429001 A CN202111429001 A CN 202111429001A CN 114142752 B CN114142752 B CN 114142752B
- Authority
- CN
- China
- Prior art keywords
- power
- output
- value
- energy storage
- inversion
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 238000004146 energy storage Methods 0.000 title claims abstract description 78
- 238000000034 method Methods 0.000 title claims abstract description 26
- 230000003044 adaptive effect Effects 0.000 claims description 7
- 238000004590 computer program Methods 0.000 claims description 4
- 230000001105 regulatory effect Effects 0.000 abstract description 3
- 238000012216 screening Methods 0.000 abstract description 2
- 230000007704 transition Effects 0.000 abstract 1
- 241001125929 Trisopterus luscus Species 0.000 description 16
- 238000013461 design Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 238000012545 processing Methods 0.000 description 4
- 230000003247 decreasing effect Effects 0.000 description 2
- 238000005070 sampling Methods 0.000 description 2
- LEHOTFFKMJEONL-UHFFFAOYSA-N Uric Acid Chemical compound N1C(=O)NC(=O)C2=C1NC(=O)N2 LEHOTFFKMJEONL-UHFFFAOYSA-N 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000001934 delay Effects 0.000 description 1
- 230000003111 delayed effect Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000001052 transient effect Effects 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M7/00—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output
- H02M7/42—Conversion of dc power input into ac power output without possibility of reversal
- H02M7/44—Conversion of dc power input into ac power output without possibility of reversal by static converters
- H02M7/48—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/0029—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with safety or protection devices or circuits
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/0063—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with circuits adapted for supplying loads from the battery
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/007—Regulation of charging or discharging current or voltage
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/007—Regulation of charging or discharging current or voltage
- H02J7/00712—Regulation of charging or discharging current or voltage the cycle being controlled or terminated in response to electric parameters
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M1/00—Details of apparatus for conversion
- H02M1/08—Circuits specially adapted for the generation of control voltages for semiconductor devices incorporated in static converters
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J2207/00—Indexing scheme relating to details of circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J2207/20—Charging or discharging characterised by the power electronics converter
Abstract
The invention discloses a power self-adaptive regulation method of an energy storage inverter power supply and a computer readable storage medium, which relate to the technical field of electric variable regulation, and the energy storage inverter power supply is started to delay a first preset continuous time length T to enter a power regulation mode so as to transition instant impact when an impact load is started, so that the impact load or a high-power load can be normally started, and the load carrying capacity is improved. Then in the slow power loop adjustment, the clipping process calculates a first alternative value by PI adjustment, product operation. In the power fast loop adjustment, the PWM duty cycle is stepped down to a second alternative value by power comparison, or the PWM duty cycle is reduced or raised to a third alternative value by voltage comparison. And comparing the result of the power slow loop regulation with the result of the power fast loop regulation, and screening out a smaller value from the result as the PWM duty ratio of actual output, so that the reliability is ensured while the power regulation speed is increased, and the purposes of regulating the output power and improving the load capacity are achieved.
Description
Technical Field
The invention relates to the technical field of electric variable adjustment, in particular to a power self-adaptive adjustment method of an energy storage inverter power supply and a computer readable storage medium.
Background
The existing energy storage inverter power supply is usually constant power output, when the energy storage inverter power supply supplies power to impact loads such as an air conditioner, a refrigerator and an ice maker, or when the energy storage inverter power supply supplies power to oversized power loads, the condition that the output power is larger than rated power easily occurs when the energy storage inverter power supply supplies power in an inverted output mode, the energy storage inverter power supply can start an overload protection function, the energy storage inverter power supply can not drive the loads, the loads can not work, and inconvenience is brought to life of people. In order to enable the energy storage inverter power supply to overcome the defect of excessively high instantaneous output power and improve the load capacity, a power self-adaptive adjusting scheme aiming at the energy storage inverter power supply needs to be designed.
Disclosure of Invention
The present invention provides a power adaptive adjustment method for an energy storage inverter and a computer readable storage medium, and aims to solve the above problems in the prior art.
The invention adopts the following technical scheme:
the power self-adaptive regulation method of the energy storage inverter power supply includes sampling output parameters of the energy storage inverter power supply after the inversion output of the energy storage inverter power supply is started; if the output power is greater than or equal to the rated power which is M1 times within the first preset continuous time period T, performing a power regulation mode, wherein T, M1 is a constant parameter which is greater than zero, and the power regulation mode comprises the following steps:
PI regulation operation is carried out on the output parameters and rated power, the obtained value is multiplied by a coefficient, and then amplitude limiting treatment is carried out to obtain a first alternative value of the inversion output PWM duty ratio;
if the output power is more than or equal to the rated power which is M1 times in the first preset continuous time length T, wherein M1 is a constant parameter, and M1 is more than 0, obtaining a second alternative value of the inversion output PWM duty ratio by the following method: taking a value obtained after the inversion output PWM duty ratio of the current energy storage inversion power supply is reduced according to a preset percentage as a second alternative value of the inversion output PWM duty ratio;
and then comparing the first alternative value with the second alternative value, and taking the smaller value of the first alternative value and the second alternative value as the actual inversion output PWM duty ratio to carry out inversion output.
Further, in the power regulation mode, when the output power is less than or equal to the rated power, a third alternative value of the inverted output PWM duty cycle is obtained by:
if (rated voltage-second voltage deviation value U2) < output voltage < (rated voltage+first voltage deviation value U1), taking the inversion output PWM duty ratio of the current energy storage inversion power supply as the third alternative value;
if the output voltage is not less than (rated voltage+first voltage deviation value U1), taking a value obtained after the inversion output PWM duty ratio of the current energy storage inversion power supply is reduced according to a fourth preset percentage A4 as the third alternative value;
if the output voltage is less than or equal to (the rated voltage-the second voltage deviation value U2), taking the value obtained after the inversion output PWM duty ratio of the current energy storage inversion power supply is increased according to the fifth preset percentage A5 as the third alternative value; wherein, A4 and A5 are constant parameters larger than zero, and 0% < A4<100%,0% < A5<100%;
and then comparing the first alternative value with the third alternative value, and taking the smaller value of the first alternative value and the third alternative value as the actual inversion output PWM duty ratio to carry out inversion output.
Further, in calculating the second alternative value, the larger the difference between the output power and the rated power is, the larger the preset percentage of decreasing the inverted output PWM duty ratio is.
Still further, the second alternative value is obtained in particular by:
when the output power is more than or equal to rated power which is M1 times more than or equal to the first preset continuous time length T, taking a value obtained after the inversion output PWM duty ratio of the current energy storage inversion power supply is reduced according to a first preset percentage A1 as the second alternative value of the inversion output PWM duty ratio;
when the output power is more than or equal to the rated power which is M2 times more than or equal to the rated power in the first preset continuous time period T, taking a value obtained after the inversion output PWM duty ratio of the current energy storage inversion power supply is reduced according to a second preset percentage A2 as the second alternative value of the inversion output PWM duty ratio;
when the output power is more than or equal to the rated power which is M3 times more than or equal to the first preset continuous time length T, taking a value obtained after the inversion output PWM duty ratio of the current energy storage inversion power supply is reduced according to a third preset percentage A3 as the second alternative value of the inversion output PWM duty ratio;
wherein, M1, M2, M3, A1, A2, A3, A4, A5 are constant parameters greater than zero, and 0< M1< M2< M3,0% < A4< A1< A2< A3<100%,0% < A5< A1< A2< A3<100%.
As a specific design of the relevant parameter, t=2 seconds, m1=1.1, a1=10%; m2=2, a2=20%; m3=4, a3=50%; u1=u2=1 volt, a4=a5=2%.
Specifically, when the output power is larger than or equal to the rated power which is M1 times, a timer of the energy storage inverter power supply starts to count time, and the timer II is cleared; when the continuous time length of the first timer is more than or equal to the first preset continuous time length T, the timing mark position of the energy storage inverter power supply is 1, and the power regulation mode is entered; when the output power is less than or equal to rated power, the first timer is cleared, and the second timer starts to count; and when the continuous time length of the second timer is more than or equal to the first preset continuous time length T, the timing mark position of the energy storage inverter power supply is 0, and the power regulation mode is exited.
Specifically, the output parameters include an output voltage, an output current, and an output power; PI regulation operation is carried out on the output power and rated power, the obtained value is multiplied by a coefficient K1, and then amplitude limiting treatment is carried out to obtain an output voltage given value; and performing PI regulation operation on the given value of the output voltage and the output voltage of the energy storage inverter, multiplying the obtained value by a coefficient K2, performing amplitude limiting treatment, taking the obtained value as the given value of the output current, performing PI regulation operation on the given value of the output current and the output current of the energy storage inverter, multiplying the obtained value by a coefficient K3, and performing amplitude limiting treatment, thus obtaining the first alternative value.
A computer readable storage medium having stored thereon a computer program for implementing a method of power adaptive regulation of an energy storage inverter as described in any one of the above.
From the above description of the structure of the present invention, the present invention has the following advantages:
firstly, the invention delays the first preset continuous time T to enter the power regulation mode after the energy storage inverter power supply is started, so that the instant impact of the impact load during the starting can be well transited, the impact load or the high-power load exceeding the rated power can be normally started, and the load capacity is improved. In the power slow loop adjusting mode, a first alternative value is calculated through amplitude limiting processing by PI adjustment, product operation and amplitude limiting operation; in the power fast loop regulation mode, the power regulation speed is provided by including power comparison and stepwise decreasing the PWM duty cycle to obtain a second alternative value. And comparing the results of the power slow loop regulation and the power fast loop regulation, and screening out a smaller value from the results as the PWM duty ratio of actual output, so that the reliability is ensured while the power regulation speed is increased, the purposes of regulating the output power, considering the regulation speed and the accuracy and improving the load capacity are achieved.
In the second aspect, when the output power is lower than the rated power, a third alternative value is calculated through a power fast loop adjusting mode of reducing or improving the PWM duty ratio through voltage comparison, and then the third alternative value is compared with the first alternative value to screen out a smaller value as the PWM duty ratio actually output, so that the power adjusting process is further perfected and refined, and the reliability is improved.
In the invention, different adjusting amplitudes are set according to the difference between the output power Pout and the rated power Prate, and the adjusting efficiency is improved on the premise of ensuring effective adjustment.
Drawings
FIG. 1 is a flow chart of the present invention.
FIG. 2 is a block flow diagram of a power recognition subsystem according to the present invention.
Fig. 3 is a block flow diagram of a power slow loop adjustment subsystem in accordance with the present invention.
Fig. 4 is a block flow diagram of a power fast loop adjustment subsystem in accordance with the present invention.
Fig. 5 is a block diagram of a power adaptive regulation system of an energy storage inverter according to the present invention.
Detailed Description
Specific embodiments of the present invention will be described below with reference to the accompanying drawings.
As shown in fig. 1 to 5, a power adaptive adjustment method of an energy storage inverter power supply includes the following steps:
step S1: and after the inversion output of the energy storage inversion power supply is started, sampling the output parameters of the energy storage inversion power supply. The output parameters mainly comprise an output voltage Uinv, an output current Iinv and an output power Pout.
Step S2: if the output power Pout is equal to or greater than rated power Prate which is greater than or equal to M1 times in the first preset continuous time period T, the energy storage inverter power supply carries out a power regulation mode, wherein T, M is a constant parameter which is greater than zero.
As shown in fig. 1 to 5, specifically, the energy storage inverter power supply includes an inverter output module and a power recognition subsystem, where the power recognition subsystem mainly includes a data acquisition module three, a data processing module three, a timer one, a timer two, and a control management module. The data acquisition module III acquires output parameters from the inversion output module and the data processing module III compares the output parameters with rated parameters. When the output power Pout is larger than or equal to the rated power Prate which is M1 times, a timer of the energy storage inverter power supply starts to count time, and the timer II is cleared; when the continuous time length T1 of the first timer is more than or equal to the first preset continuous time length T, setting the timing flag bit P_flag of the energy storage inverter power supply to be 1; when the output power Pout is less than or equal to rated power Prate, the timer I is cleared, and the timer II starts to count; and when the continuous time length T2 of the second timer is more than or equal to the first preset continuous time length T, setting the timing flag bit P_flag of the energy storage inverter power supply to be 0. Where T is a constant parameter greater than zero. Therefore, the rated power Prate of which the output power Pout is more than or equal to M1 times in the first preset continuous time period T is the rated power Prate of which the output power Pout is more than or equal to M1 times, the timing flag bit P_flag is set to be 1, and the control management module is controlled to send an enabling signal to enable the energy storage inverter power supply to enter a power regulation mode when the condition is met.
For impact type loads such as ice machines, air conditioners, refrigerators and the like, 2-3 times of impact current can be generated instantaneously when the load is started, and if the inverter power supply is started, the normal use of the load can be influenced when the inverter power supply enters a power regulation mode immediately. In contrast, the invention designs the first preset continuous time T to time after the energy storage inverter power supply is started and delay the energy storage inverter power supply to enter the power regulation mode, so that the instant impact of the impact load during starting can be well transited, the impact load or the high-power load exceeding the rated power can be normally started, and the load carrying capacity of the energy storage power supply is greatly improved.
As shown in fig. 1 to 5, after the energy storage inverter power supply enters a power regulation mode, power self-adaptive regulation is mainly realized by the following method:
and (1) performing PI regulation operation on the output parameters and rated power, multiplying the obtained value by a coefficient, and performing amplitude limiting treatment to obtain a first alternative value of the inversion output PWM duty ratio.
As shown in fig. 1 to 5, specifically, the energy storage inverter power supply includes an inverter output module and a power slow loop adjusting subsystem, and the power slow loop adjusting subsystem mainly includes an inverter output module, a first data acquisition module, and three groups of PI adjusting modules, a product operation module and an amplitude limiting module which are electrically connected in sequence. Output parameters including output voltage, output current and output power Pout (i.e. signal p_fbc) are acquired from the inverting output module by the data acquisition module. The three groups of PI regulating modules, the product operation module and the amplitude limiting module which are electrically connected in sequence are respectively a first group, a second group and a third group. (a) Firstly, inputting output power Pout (namely a signal P_Fbc) and rated power Prate (namely a signal P_Ref) into a first group, performing PI regulation operation by a PI regulation module PI (P), multiplying the obtained value by a coefficient K1 by a product operation module, and performing amplitude limiting treatment by an amplitude limiting module F1 to obtain an output voltage given value (namely a signal U_Ref); (b) Inputting the given value of the output voltage (i.e. the signal U_Ref) and the output voltage Uinv (i.e. the signal U_fbc) into a second group, performing PI regulation operation by a PI regulation module PI (U), multiplying the obtained value by a coefficient K2 by a product operation module, and performing amplitude limiting treatment by an amplitude limiting module F2 to obtain the given value of the output current (i.e. the signal I_Ref); (c) The output current given value (i.e. signal I_Ref) and the output current Iinv (i.e. signal I_Fbc) are input into a third group, PI regulation operation is carried out by a PI regulation module PI (I), the obtained value is multiplied by a coefficient K3 by a product operation module, and then the value is taken as the first alternative value after amplitude limiting treatment by an amplitude limiting module F3. Wherein, K1, K2 and K3 are constant parameters.
Step (2), if the output power Pout is greater than or equal to rated power Prate which is greater than or equal to M1 times in a first preset continuous time period T, wherein M1 is a constant parameter, and M1 is greater than 0, obtaining a second alternative value of the inverted output PWM duty ratio by the following method: and taking a value obtained after the inversion output PWM duty ratio of the current energy storage inversion power supply is reduced according to a preset percentage as a second alternative value of the inversion output PWM duty ratio, wherein the larger the difference value between the output power Pout and the rated power Prate is, the larger the preset percentage of the inversion output PWM duty ratio is reduced. The method specifically comprises the following steps:
when the output power Pout is equal to or more than rated power Prate which is M1 times within a first preset continuous time period T, taking a value obtained after the inversion output PWM duty ratio of the current energy storage inversion power supply is reduced according to a first preset percentage A1 as the second alternative value of the inversion output PWM duty ratio;
when the output power Pout is equal to or more than rated power Prate which is M2 times within a first preset continuous time period T, taking a value obtained after the inversion output PWM duty ratio of the current energy storage inversion power supply is reduced according to a second preset percentage A2 as the second alternative value of the inversion output PWM duty ratio;
and (2.3) taking the value obtained after the inversion output PWM duty ratio of the current energy storage inversion power supply is reduced according to the third preset percentage A3 as the second alternative value of the inversion output PWM duty ratio when the output power Pout is more than or equal to the rated power Prate which is M3 times within the first preset continuous duration T.
And (3) in the power regulation mode, when the output power Pout is less than or equal to the rated power Prate, obtaining a third alternative value of the inverted output PWM duty ratio by the following method.
In the substep (3.1), if (rated voltage Urate-second voltage deviation value U2) < output voltage Uinv < (rated voltage Urate+first voltage deviation value U1), taking the inversion output PWM duty ratio of the current energy storage inversion power supply as the third alternative value;
in the substep (3.2), if the output voltage Uinv is greater than or equal to (the rated voltage uarate+the first voltage deviation value U1), taking a value obtained after the inversion output PWM duty ratio of the current energy storage inversion power supply is reduced according to a fourth preset percentage A4 as the third alternative value;
and (3.3) if the output voltage Uinv is less than or equal to (the rated voltage Urate-the second voltage deviation value U2), taking the value obtained after the inversion output PWM duty ratio of the current energy storage inversion power supply is increased according to the fifth preset percentage A5 as the third alternative value.
Wherein, A1, A2, A3, A4 and A5 are constant parameters which are larger than zero, and 0< M1< M2< M3,0% < A4< A1< A2< A3<100%,0% < A5< A1< A2< A3<100%.
As shown in fig. 1 to 5, specifically, the energy storage inverter power supply includes an inverter output module and a power fast loop adjustment subsystem, where the power fast loop adjustment subsystem mainly includes a second data processing module and a second data acquisition module, and is configured to execute the step (2) and the step (3).
Comparing the first alternative value with the second alternative value, and taking the smaller value of the first alternative value and the second alternative value as an actual inversion output PWM duty ratio to carry out inversion output; or comparing the first alternative value with the third alternative value, and taking the smaller value of the first alternative value and the third alternative value as the actual inversion output PWM duty ratio to carry out inversion output. Specifically, the energy storage inverter power supply comprises a PWM signal control module which compares and outputs smaller values.
As shown in fig. 1 to 5, in the present invention, power recognition (i.e. a power recognition sub-function) is mainly performed through step S2, and the energy storage inverter power supply is delayed to enter a power regulation mode after being started, so that the transient impact during starting of the impact load can be well transitioned, and the impact load or the high-power load exceeding the rated power can be normally started. The slow loop regulation (namely, the power slow loop regulation subfunction) in the power regulation mode is mainly formed by the step (1), the fast loop regulation (namely, the power fast loop regulation subfunction) in the power regulation mode is mainly formed by the step (2) and the step (3), different regulation amplitudes are set according to the difference between the output power Pout and the rated power Prate, and the regulation efficiency is improved; and then, a smaller value is screened out from two results of the power slow loop regulation and the power fast loop regulation by comparison, so that the reliability is ensured.
Wherein, T1, M2, M3, A1, A2, A3, A4, A5, U1, U2 are constant parameters greater than zero, and 0< M1< M2< M3,0% < A4< A1< A2< A3<100%,0% < A5< A1< A2< A3<100%.
As shown in fig. 1 to 5, in a specific embodiment of a power adaptive adjustment method of an energy storage inverter power source, t=2 seconds, m1=1.1, a1=10%; m2=2, a2=20%; m3=4, a3=50%; u1=u2=1 volt, a4=a5=2%.
Furthermore, in one implementation, a computer readable storage medium is provided, having stored thereon a computer program for implementing a power adaptive regulation method of an energy storage inverter power supply as described above.
The foregoing is merely illustrative of specific embodiments of the present invention, but the design concept of the present invention is not limited thereto, and any insubstantial modification of the present invention by using the design concept shall fall within the scope of the present invention.
Claims (7)
1. The power self-adaptive regulation method of the energy storage inverter power supply is characterized in that after the inverter output of the energy storage inverter power supply is started, the output parameters of the energy storage inverter power supply are sampled; if the output power is greater than or equal to the rated power which is M1 times within the first preset continuous time period T, performing a power regulation mode, wherein T, M1 is a constant parameter which is greater than zero, and the power regulation mode comprises the following steps:
PI regulation operation is carried out on the output parameters and rated power, the obtained value is multiplied by a coefficient, and then amplitude limiting treatment is carried out to obtain a first alternative value of the inversion output PWM duty ratio;
obtaining a second alternative value of the inverted output PWM duty cycle by: taking a value obtained after the inversion output PWM duty ratio of the current energy storage inversion power supply is reduced according to a preset percentage as a second alternative value of the inversion output PWM duty ratio;
then, comparing the first alternative value with the second alternative value, and taking the smaller value of the first alternative value and the second alternative value as an actual inversion output PWM duty ratio to carry out inversion output;
when the output power is less than or equal to rated power, a third alternative value of the inversion output PWM duty ratio is obtained by the following method:
if (rated voltage-second voltage deviation value U2) < output voltage < (rated voltage+first voltage deviation value U1), taking the inversion output PWM duty ratio of the current energy storage inversion power supply as the third alternative value;
if the output voltage is not less than (rated voltage+first voltage deviation value U1), taking a value obtained after the inversion output PWM duty ratio of the current energy storage inversion power supply is reduced according to a fourth preset percentage A4 as the third alternative value;
if the output voltage is less than or equal to (the rated voltage-the second voltage deviation value U2), taking the value obtained after the inversion output PWM duty ratio of the current energy storage inversion power supply is increased according to the fifth preset percentage A5 as the third alternative value; wherein, A4 and A5 are constant parameters larger than zero, and 0% < A4<100%,0% < A5<100%;
and then comparing the first alternative value with the third alternative value, and taking the smaller value of the first alternative value and the third alternative value as the actual inversion output PWM duty ratio to carry out inversion output.
2. The method of claim 1, wherein in calculating the second alternative value, the greater the difference between the output power and the rated power, the greater the preset percentage of decrease in the inverted output PWM duty cycle.
3. The power adaptive adjustment method of an energy storage inverter according to claim 2, wherein the second alternative value is obtained specifically by:
when the output power is more than or equal to rated power which is M1 times more than or equal to the first preset continuous time length T, taking a value obtained after the inversion output PWM duty ratio of the current energy storage inversion power supply is reduced according to a first preset percentage A1 as the second alternative value of the inversion output PWM duty ratio;
when the output power is more than or equal to the rated power which is M2 times more than or equal to the rated power in the first preset continuous time period T, taking a value obtained after the inversion output PWM duty ratio of the current energy storage inversion power supply is reduced according to a second preset percentage A2 as the second alternative value of the inversion output PWM duty ratio;
when the output power is more than or equal to the rated power which is M3 times more than or equal to the first preset continuous time length T, taking a value obtained after the inversion output PWM duty ratio of the current energy storage inversion power supply is reduced according to a third preset percentage A3 as the second alternative value of the inversion output PWM duty ratio;
wherein, M1, M2, M3, A1, A2, A3, A4, A5 are constant parameters greater than zero, and 0< M1< M2< M3,0% < A4< A1< A2< A3<100%,0% < A5< A1< A2< A3<100%.
4. A method for adaptively adjusting the power of an energy storage inverter according to claim 3, wherein: t=2 seconds, m1=1.1, a1=10%; m2=2, a2=20%; m3=4, a3=50%;
u1=u2=1 volt, a4=a5=2%.
5. The method for adaptively adjusting the power of the energy storage inverter according to claim 1, wherein when the output power is equal to or greater than the rated power which is M1 times, a timer of the energy storage inverter starts to count, and a timer II is cleared; when the continuous time length of the first timer is more than or equal to the first preset continuous time length T, the timing mark position of the energy storage inverter power supply is 1, and the power regulation mode is entered; when the output power is less than or equal to rated power, the first timer is cleared, and the second timer starts to count; and when the continuous time length of the second timer is more than or equal to the first preset continuous time length T, the timing mark position of the energy storage inverter power supply is 0, and the power regulation mode is exited.
6. The method for adaptively adjusting the power of an energy storage inverter according to claim 1, wherein the method comprises the steps of: the output parameters comprise output voltage, output current and output power; PI regulation operation is carried out on the output power and rated power, the obtained value is multiplied by a coefficient K1, and then amplitude limiting treatment is carried out to obtain an output voltage given value; and performing PI regulation operation on the given value of the output voltage and the output voltage of the energy storage inverter, multiplying the obtained value by a coefficient K2, performing amplitude limiting treatment, taking the obtained value as the given value of the output current, performing PI regulation operation on the given value of the output current and the output current of the energy storage inverter, multiplying the obtained value by a coefficient K3, and performing amplitude limiting treatment, thus obtaining the first alternative value.
7. A computer-readable storage medium having stored thereon a computer program, characterized by: the computer program is used for realizing the power self-adaptive regulation method of the energy storage inverter power supply according to any one of claims 1 to 6.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111429001.4A CN114142752B (en) | 2021-11-29 | 2021-11-29 | Power self-adaptive adjusting method of energy storage inverter power supply and computer readable storage medium |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111429001.4A CN114142752B (en) | 2021-11-29 | 2021-11-29 | Power self-adaptive adjusting method of energy storage inverter power supply and computer readable storage medium |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114142752A CN114142752A (en) | 2022-03-04 |
| CN114142752B true CN114142752B (en) | 2023-11-24 |
Family
ID=80388496
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111429001.4A Active CN114142752B (en) | 2021-11-29 | 2021-11-29 | Power self-adaptive adjusting method of energy storage inverter power supply and computer readable storage medium |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114142752B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115603430B (en) | 2022-11-16 | 2023-03-31 | 浙江动一新能源动力科技股份有限公司 | Portable electric energy storage system and power adjusting method thereof |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20050213352A1 (en) * | 2004-03-15 | 2005-09-29 | Color Kinetics Incorporated | Power control methods and apparatus |
| US20080205096A1 (en) * | 2007-02-22 | 2008-08-28 | Jih-Sheng Lai | Control system and method for a universal power conditioning system |
| CN102931687A (en) * | 2012-10-12 | 2013-02-13 | 华北电力大学（保定） | Power adjustment method for hybrid energy storage photovoltaic power station |
| CN107257138A (en) * | 2017-07-18 | 2017-10-17 | 武汉大学 | A kind of virtual prime mover power output adjusting method based on photo-voltaic power supply |
| CN110121820A (en) * | 2019-01-08 | 2019-08-13 | 深圳欣锐科技股份有限公司 | A kind of adjusting method of output power, equipment, system and storage medium |
| CN110752745A (en) * | 2019-10-30 | 2020-02-04 | 渤海大学 | Composite power control system of impedance self-matching type induction heating inverter power supply |
-
2021
- 2021-11-29 CN CN202111429001.4A patent/CN114142752B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20050213352A1 (en) * | 2004-03-15 | 2005-09-29 | Color Kinetics Incorporated | Power control methods and apparatus |
| US20080205096A1 (en) * | 2007-02-22 | 2008-08-28 | Jih-Sheng Lai | Control system and method for a universal power conditioning system |
| CN101842956A (en) * | 2007-02-22 | 2010-09-22 | 弗吉尼亚科技知识产权有限公司 | Control method for a universal power condition system |
| CN102931687A (en) * | 2012-10-12 | 2013-02-13 | 华北电力大学（保定） | Power adjustment method for hybrid energy storage photovoltaic power station |
| CN107257138A (en) * | 2017-07-18 | 2017-10-17 | 武汉大学 | A kind of virtual prime mover power output adjusting method based on photo-voltaic power supply |
| CN110121820A (en) * | 2019-01-08 | 2019-08-13 | 深圳欣锐科技股份有限公司 | A kind of adjusting method of output power, equipment, system and storage medium |
| CN110752745A (en) * | 2019-10-30 | 2020-02-04 | 渤海大学 | Composite power control system of impedance self-matching type induction heating inverter power supply |
Also Published As
| Publication number | Publication date |
|---|---|
| CN114142752A (en) | 2022-03-04 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102904323B (en) | Pulse wave modulation charging method and pulse wave modulation charging device | |
| CN101902122B (en) | Cycle-by-cycle current-limiting protection method for VIENNA rectifier and device thereof | |
| CN114142752B (en) | Power self-adaptive adjusting method of energy storage inverter power supply and computer readable storage medium | |
| CN115561560B (en) | Pure hardware implementation control circuit and control method for power device aging test | |
| CN114844027B (en) | Photovoltaic system direct-current bus voltage control method based on finite control set model prediction | |
| CN105680477B (en) | A kind of photovoltaic combining inverter drop volume control system and method | |
| CN111371143B (en) | Charging and discharging system | |
| US11063436B2 (en) | Power conversion device | |
| CN101728582A (en) | Battery disposal device and method | |
| CN214953999U (en) | Multi-mode power electronic load system | |
| CN110571842A (en) | New energy station electric energy quality regulation and control method, device and system | |
| CN209994271U (en) | Power supply for improving instant over-power loading of power supply | |
| CN113517730A (en) | Battery charging and discharging system, circuit and method | |
| CN109066630B (en) | Current limiting device and current limiting method of active power filter | |
| CN109245235B (en) | Multi-battery charging system and multi-battery charging method | |
| CN109038666B (en) | Solar cell panel output power regulating system | |
| CN116581763A (en) | Method for selectively switching working modes of photovoltaic inverter system in power distribution network | |
| CN107040154B (en) | Battery inversion system and its Current limited Control method with Current limited Control function | |
| CN106357093B (en) | Improve the method and system of current sample precision | |
| CN113991745B (en) | Inverter control method, inverter controller, inverter and power supply system | |
| CN101662153A (en) | Thyristor power control triggering method | |
| CN114094862A (en) | Photovoltaic inverter electric energy output control method, device and system | |
| CN109066815B (en) | Power electronic load active control method and system considering importance | |
| CN110249497B (en) | Bus voltage adjusting method and related equipment | |
| CN201663206U (en) | Battery disposal device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |