CN104506049B - Control method of device for inhibiting transient fluctuation of inverter power supply output voltage - Google Patents
Control method of device for inhibiting transient fluctuation of inverter power supply output voltage Download PDFInfo
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- CN104506049B CN104506049B CN201510020967.0A CN201510020967A CN104506049B CN 104506049 B CN104506049 B CN 104506049B CN 201510020967 A CN201510020967 A CN 201510020967A CN 104506049 B CN104506049 B CN 104506049B
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- 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
- H02M5/00—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases
- H02M5/40—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases with intermediate conversion into dc
- H02M5/42—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases with intermediate conversion into dc by static converters
- H02M5/44—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases with intermediate conversion into dc by static converters using discharge tubes or semiconductor devices to convert the intermediate dc into ac
- H02M5/453—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases with intermediate conversion into dc by static converters using discharge tubes or semiconductor devices to convert the intermediate dc into ac using devices of a triode or transistor type requiring continuous application of a control signal
- H02M5/458—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases with intermediate conversion into dc by static converters using discharge tubes or semiconductor devices to convert the intermediate dc into ac using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only
-
- 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
- H02M1/12—Arrangements for reducing harmonics from ac input or output
- H02M1/126—Arrangements for reducing harmonics from ac input or output using passive filters
-
- 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
- H02M7/53—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 using devices of a triode or transistor type requiring continuous application of a control signal
- H02M7/537—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 using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only, e.g. single switched pulse inverters
- H02M7/5387—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 using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only, e.g. single switched pulse inverters in a bridge configuration
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Inverter Devices (AREA)
Abstract
The invention discloses a device and method for inhibiting transient fluctuation of inverter power supply output voltage, comprising an engine, a permanent magnet generator, a rectification change module, an LC filter circuit and a controller, wherein the engine is connected with the permanent magnet generator to generate alternating current, the permanent magnet generator is connected with a rectification change module, the controller is provided with a PWM output module and an A/D conversion module, the PWM output module is connected with a power conversion circuit through a driving circuit, by controlling the opening and closing thereof, a constant-frequency and constant-voltage output voltage is obtained, the voltage supplies power to a load after passing through the LC filter circuit, the A/D conversion module is connected with alternating current power supply frequency detection and direct current bus voltage detection circuits so as to respectively detect the alternating current power supply voltage state of the generator and the direct current bus voltage state of the filter circuit after filtering. The device and the method can obviously inhibit the output voltage pulsation, and improves the transient performance of an invertion device.
Description
Technical field
The present invention relates to a kind of control method of the device of suppression inverter output voltage transient wave.
Background technology
In some emergency service occasions, vehicular power generation system is widely used.This system typically adopt combustion gas or
Fuel engines drives alternating current generator output AC power source, then exports the exchange of constant frequency and constant voltage by commutation inversion device
Power supply.The transient wave of output voltage can be caused due to exporting the suddenly change of lateral load in actual application.If wink
State fluctuation is too big, gently then affects the stability of follow-up power device, heavy then damage electrical equipment.
Content of the invention
The present invention is in order to solve the above problems it is proposed that a kind of device of suppression inverter output voltage transient wave
Control method, the method is passed through to detect the change of input side alternating current voltage frequency, by fuzzy logic ordination real-time control SPWM
Suppressing output voltage to fluctuate, it is simple to have computational methods, easy to use for modulation depth, system dynamics fast response time excellent
Point.
To achieve these goals, the present invention adopts the following technical scheme that：
A kind of device of suppression inverter output voltage transient wave, including electromotor, magneto, rectification change
Module, LC filter circuit and controller, wherein：
Electromotor connects magneto, produces alternating current, and magneto connects rectification change module, rectification changing pattern
Block passes through LC filter circuit and connects load, and controller drives rectification change module；
Described rectification changes module, and including rectification module, filter circuit and power conversion circuit, rectification module is by alternating current
After being converted to unidirectional current, filter circuit is filtered to it, and filter circuit connects power conversion circuit；
Described controller is provided with PWM output module, A/D modular converter, and described PWM output module is connected by drive circuit
Power conversion circuit, obtains the output voltage of constant frequency and constant voltage, this voltage powering load after LC filter circuit, and A/D changes
Module receives the AC supply voltage state of electromotor, filter circuit filtered DC bus-bar voltage state.
Described A/D modular converter connects current transformer by isolating amplifier circuit, and current transformer connects LC filtered electrical
Road rear end.
Described A/D modular converter connects voltage transformer by isolating amplifier circuit, and voltage transformer connects load input
End.
Described filter circuit is connected with DC/DC changer, and DC/DC changer connects drive circuit.
Described controller is provided with power drive protection interrupt module, receives temperature protection signal, overcurrent protection signal and mistake
Pressure protection signal.
Described controller is embedded controller or digital signal processor (DSP), electronic controller (ECU).
Based on the control method of said system, comprise the following steps：
(1) ac power frequency that external sampling circuit obtains input side electromotor is effective with the voltage of itself outlet side
Value is converted to corresponding digital quantity input controller；
(2) controller according to setting speed reference value and actual speed sampled value pass through mathematical operation composition speed error and
Voltage error, defines membership function and the speed error rate of change membership function of speed error, builds fuzzy logic ordination
Table；
(3) mode according to prefabricated fuzzy logic ordination table come change in real time produce sinusoidal pulse width modulation modulation depth
To reduce the transient wave of output voltage.
In described step (2), for speed error ESFuzzy set and its domain be defined as follows：
ESFuzzy set be:{NB,NM,NS,ZO,PS,PM,PB}；
ESDomain be:{ -150, -100, -80, -60, -40, -20,0,20,40,60,80,100,150 }；
According to speed error ESFuzzy set and its domain determine the membership function of fuzzy variable, to determine unit in domain
The degree of membership to Fuzzy Linguistic Variable for the element, obtains speed error ESDegree of membership.
In described step (2), for speed error rate of change ECSFuzzy set and its domain be defined as follows：
ECSFuzzy set be:{NB,NM,NS,ZO,PS,PM,PB}；
ECSDomain be:{ -150, -90, -70, -50, -30, -10,0,10,30,50,70,90,150 }；
According to speed error rate of change ECSFuzzy set and its domain determine the membership function of fuzzy variable, to determine
The degree of membership to Fuzzy Linguistic Variable for the domain interior element, obtains speed error rate of change ECSDegree of membership.
In described step (2), for modulation depth COEFFICIENT KMFuzzy set and its domain be defined as follows：
KMFuzzy set be:{NB,NM,NS,ZO,PS,PM,PB}；
KMDomain be:{ 0.1,0.2,0.3,0.4,0.6,0.8,1.0,1.2,1.4,1.6,1.8,2.0,2.5 }；
According to modulation depth COEFFICIENT KMFuzzy set and its domain determine the membership function of fuzzy variable, to determine domain
The degree of membership to Fuzzy Linguistic Variable for the interior element, obtains modulation depth KMDegree of membership.
In described step (2), to speed error ES, speed error rate of change ECS, modulation depth COEFFICIENT KMFuzzy set, opinion
The definition of domain and degree of membership is rule of thumb adjusted；According to setting, modulation depth coefficient is determined by actual commissioning experience
KMControl rule table.
In described step (2), KMControl rule table be：
Beneficial effects of the present invention are：
(1) method is simple, easy to use, system dynamics fast response time；
(2) can substantially suppress output voltage to pulse, improve the mapping of inverter.
Brief description
Fig. 1 is the schematic diagram of emergency power supply system inverter；
Fig. 2 is rotating speed, dc bus and output voltage virtual value change schematic diagram during load suddenly change；
Fig. 3 is output voltage waveforms comparison diagram during different modulating depth；
Fig. 4 is ESMembership functionFigure；
Fig. 5 is ECSMembership functionFigure；
Fig. 6 is KMMembership functionFigure.
Wherein, 1. diesel oil or petrol engine, 2. magneto, 3. rectification module, 4. filter circuit, 5. power conversion
Circuit, 6.LC filter circuit, 7. load, 8. embedded controller.
Specific embodiment：
The invention will be further described with embodiment below in conjunction with the accompanying drawings.
As shown in Figure 1：The schematic diagram of emergency power supply system inverter, this inverter mainly includes bavin Water Oil Or Gas
Electromotor 1, magneto 2, rectification module 3, filter circuit 4, power conversion circuit 5, LC filter circuit 6, load 7, embedded
Formula controller 8, input side alternating current power supply testing circuit, DC bus-bar voltage detection, drive circuit, output current detection circuit,
The parts such as output voltage detecting circuit.
The operation principle of inverter is as follows：Diesel oil or gasoline engine generator are passed through with the alternating current power supply of magneto generation
Arrangement in inverter and filter circuit form DC voltage, and embedded controller hardware and software program forms SPWM and controls
Signal turns on and off, by drive circuit control power conversion circuit, the output voltage obtaining constant frequency and constant voltage, and this voltage passes through
Powering load after LC filter circuit.DC bus-bar voltage detection judges to alternating voltage state with reference to controller.Input
Top-cross stream power sense circuit is the testing circuit of this method tach signal.Output voltage, current detection circuit are realized to output
The detection of state.
Fig. 2 is rotating speed, dc bus and output voltage virtual value change schematic diagram during load suddenly change.As shown in figure 1,
Load generator speed when 7 unexpected increased portions are divided into the output loading of test to be mutated 100% nominal load situation by zero load, straight
Situation that stream busbar voltage reduces suddenly and output voltage virtual value fluctuates.Loading the 7 unexpected parts that reduce is the output loading tested
Being mutated generator speed during zero load, DC bus-bar voltage by 100% nominal load increases suddenly and output voltage virtual value ripple
Emotionally condition.
Fig. 3 is that during different modulating depth, output voltage waveforms compare.In schematic diagram upper figure be SPWM modulation depth be M1When
SPWM waveform and equivalent sine wave, figure below for SPWM modulation depth be M2When SPWM waveform and equivalent sine wave, this
When M1＜ M2.From diagram, the visible size adjusting modulation depth can adjust the numerical value of sine wave output.
Fig. 4 is speed error ESMembership functionFor speed error ESFuzzy set and its domain be defined as follows：
ESFuzzy set be:{NB,NM,NS,ZO,PS,PM,PB}；
ESDomain be:{ -150, -100, -80, -60, -40, -20,0,20,40,60,80,100,150 }；
According to speed error ESFuzzy set and its domain determine the membership function of fuzzy variable, to determine unit in domain
The degree of membership to Fuzzy Linguistic Variable for the element, obtains rotating speed error E in Fig. 4SDegree of membership.
Fig. 5 is speed error rate of change ECSMembership functionFor speed error rate of change ECSFuzzy set and its
Domain is defined as follows：
ECSFuzzy set be:{NB,NM,NS,ZO,PS,PM,PB}；
ECSDomain be:{ -150, -90, -70, -50, -30, -10,0,10,30,50,70,90,150 }；
According to speed error rate of change ECSFuzzy set and its domain determine the membership function of fuzzy variable, to determine
The degree of membership to Fuzzy Linguistic Variable for the domain interior element, obtains rotating speed error rate EC in Fig. 5SDegree of membership.
Fig. 6 is modulation depth COEFFICIENT KMMembership functionFor modulation depth COEFFICIENT KMFuzzy set and its domain
It is defined as follows：
KMFuzzy set be:{NB,NM,NS,ZO,PS,PM,PB}；
KMDomain be:{ 0.1,0.2,0.3,0.4,0.6,0.8,1.0,1.2,1.4,1.6,1.8,2.0,2.5 }；
According to modulation depth COEFFICIENT KMFuzzy set and its domain determine the membership function of fuzzy variable, to determine domain
The degree of membership to Fuzzy Linguistic Variable for the interior element, obtains modulation depth K in Fig. 6MDegree of membership.
Above-mentioned to speed error ES, speed error rate of change ECS, modulation depth COEFFICIENT KMFuzzy set, domain and degree of membership
Definition be not optimal value, can rule of thumb be adjusted during practical application.According to above-mentioned setting, by actual tune
Try empirically determined modulation depth COEFFICIENT KMControl rule table, as shown in table 1, the content inside control rule table can also basis
Different application scenarios is adjusting.
Table 1 modulation depth COEFFICIENT KMControl rule table
According to table 1, modulation depth COEFFICIENT KMValue is exemplified below：
1) if speed error ES＞ 150, then ES=PB；Speed error rate of change ECS＞ 150, then ECS=PB；Table look-up
KM=NB, modulation depth COEFFICIENT KMTake 0.1.
2) if speed error ES＜ -150, then ES=NB；Speed error rate of change ECS＜ -150, then ECS=NB；Table look-up
Obtain KM=PB, modulation depth COEFFICIENT KMTake 2.5.
The device and method proving to suppress inverter output voltage transient wave by practical application in invention can be bright
Aobvious suppression output voltage pulsation, improves the mapping of inverter.
Although the above-mentioned accompanying drawing that combines is described to the specific embodiment of the present invention, not model is protected to the present invention
The restriction enclosed, one of ordinary skill in the art should be understood that on the basis of technical scheme, and those skilled in the art are not
Need to pay the various modifications that creative work can make or deformation still within protection scope of the present invention.
Claims (4)
1. a kind of control method of the device of suppression inverter output voltage transient wave, wherein, described suppression inverter
The device of output voltage transient wave, including electromotor, magneto, rectification change module, LC filter circuit and controller,
Wherein：
Electromotor connects magneto, produces alternating current, and magneto connects rectification change module, and rectification change module is led to
Cross LC filter circuit and connect load, controller drives rectification change module；
Described rectification changes module, and including rectification module, filter circuit and power conversion circuit, alternating current is changed by rectification module
After unidirectional current, filter circuit is filtered to it, and filter circuit connects power conversion circuit；
Described controller is provided with PWM output module, A/D modular converter, and described PWM output module connects power by drive circuit
Translation circuit, obtains the output voltage of constant frequency and constant voltage, this voltage powering load after LC filter circuit, A/D modular converter
Receive AC supply voltage state, the filter circuit filtered DC bus-bar voltage state of electromotor,
It is characterized in that：Comprise the following steps：
(1) voltage effective value of the ac power frequency and itself outlet side that external sampling circuit is obtained input side electromotor turns
It is changed to corresponding digital quantity input controller；
(2) controller constitutes speed error and voltage with actual speed sampled value by mathematical operation according to setting speed reference value
Error, defines membership function and the speed error rate of change membership function of speed error, builds fuzzy logic ordination table；
(3) mode according to prefabricated fuzzy logic ordination table drops come the modulation depth changing generation sinusoidal pulse width modulation in real time
The transient wave of low output voltage.
2. control method as claimed in claim 1, is characterized in that：In described step (2), for speed error ESFuzzy set
And its domain is defined as follows：
ESFuzzy set be:{NB,NM,NS,ZO,PS,PM,PB}；
ESDomain be:{ -150, -100, -80, -60, -40, -20,0,20,40,60,80,100,150 }；
According to speed error ESFuzzy set and its domain determine the membership function of fuzzy variable, to determine domain interior element pair
The degree of membership of Fuzzy Linguistic Variable, obtains speed error ESDegree of membership；
In described step (2), for speed error rate of change ECSFuzzy set and its domain be defined as follows：
ECSFuzzy set be:{NB,NM,NS,ZO,PS,PM,PB}；
ECSDomain be:{ -150, -90, -70, -50, -30, -10,0,10,30,50,70,90,150 }；
According to speed error rate of change ECSFuzzy set and its domain determine the membership function of fuzzy variable, to determine in domain
The degree of membership to Fuzzy Linguistic Variable for the element, obtains speed error rate of change ECSDegree of membership.
3. control method as claimed in claim 1, is characterized in that：In described step (2), for modulation depth COEFFICIENT KMMould
Paste collection and its domain are defined as follows：
KMFuzzy set be:{NB,NM,NS,ZO,PS,PM,PB}；
KMDomain be:{ 0.1,0.2,0.3,0.4,0.6,0.8,1.0,1.2,1.4,1.6,1.8,2.0,2.5 }；
According to modulation depth COEFFICIENT KMFuzzy set and its domain determine the membership function of fuzzy variable, to determine unit in domain
The degree of membership to Fuzzy Linguistic Variable for the element, obtains modulation depth KMDegree of membership.
4. control method as claimed in claim 1, is characterized in that：In described step (2), to speed error ES, speed error become
Rate ECS, modulation depth COEFFICIENT KMThe definition of fuzzy set, domain and degree of membership be rule of thumb adjusted；According to setting, lead to
The commissioning experience crossing reality determines modulation depth COEFFICIENT KMControl rule table；
In described step (2), KMControl rule table be：
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| CN106160517B (en) * | 2016-08-26 | 2018-11-27 | 上海科泰电源股份有限公司 | A kind of frequency conversion diesel generating set out-put supply switching control system |
| CN109358285B (en) * | 2018-10-30 | 2021-11-05 | 铜仁职业技术学院 | Method for detecting load imbalance of permanent magnet brushless direct current motor |
| CN113489388B (en) * | 2021-06-21 | 2023-05-26 | 山东省科学院自动化研究所 | Direct instantaneous current control method and controller for switch reluctance motor |
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| CN101355318A (en) * | 2008-09-11 | 2009-01-28 | 山东省科学院自动化研究所 | Improved method for controlling hysteresis loop current |
| JP5424611B2 (en) * | 2008-10-28 | 2014-02-26 | 澤藤電機株式会社 | Inverter generator |
| CN101863413A (en) * | 2010-06-25 | 2010-10-20 | 天津城市建设学院 | Energy-saving control system for permanent magnet synchronous escalator |
| CN102797906B (en) * | 2012-07-26 | 2014-09-10 | 杭州博流科技有限公司 | Electromagnetic valve type valve positioning machine and a control method thereof |
| CN103236372B (en) * | 2013-04-03 | 2015-11-18 | 南京因泰莱配电自动化设备有限公司 | A kind of based on PWM monostable vacuum circuit breaker permanent-magnet operating mechanism control method and device thereof |
| CN103671891B (en) * | 2013-12-26 | 2017-04-26 | 广东工业大学 | Non-contact automobile transmission and speed-regulating control algorithm thereof |
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Application publication date: 20150408 Assignee: Qingdao Veccon Electric Co., Ltd. Assignor: Automation Inst., Shandong Prov. Contract record no.: X2019370000015 Denomination of invention: Control method of device for inhibiting transient fluctuation of inverter power supply output voltage Granted publication date: 20170222 License type: Common License Record date: 20191111 |
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Application publication date: 20150408 Assignee: Shandong core energy technology Co., Ltd. Assignor: Automation Inst., Shandong Prov. Contract record no.: X2019370000021 Denomination of invention: Control method of device for inhibiting transient fluctuation of inverter power supply output voltage Granted publication date: 20170222 License type: Common License Record date: 20191206 Application publication date: 20150408 Assignee: Shandong space flight Ji Li Electronics Co., Ltd. Assignor: Automation Inst., Shandong Prov. Contract record no.: X2019370000020 Denomination of invention: Control method of device for inhibiting transient fluctuation of inverter power supply output voltage Granted publication date: 20170222 License type: Common License Record date: 20191206 |