CN105281594A - Power conversion device - Google Patents
Power conversion device Download PDFInfo
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- CN105281594A CN105281594A CN201510289889.4A CN201510289889A CN105281594A CN 105281594 A CN105281594 A CN 105281594A CN 201510289889 A CN201510289889 A CN 201510289889A CN 105281594 A CN105281594 A CN 105281594A
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- power
- circuit
- inverter
- voltage
- direct current
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Abstract
The present invention provides a power conversion device capable of suppressing false stop of the power conversion device even if instant reduction occurs. The power conversion device (1) comprises: a step-up circuit (3) for controlling a step-up ratio (first operation quantity (S1)) to enable DC power outputted by a solar cell (8) to be the maximum value or near the maximum value; and an inversion circuit (4) to which the DC power outputted from the step-up circuit (3) is inputted and which is used for converting the DC power into AC power. The power conversion device is characterized by comprising a control part which corrects the step-up ratio by using a correction value (second operation quantity (S2)) of a voltage based on the DC power inputted to the inversion circuit (4) and increases the correction value when a current value of the AC power exceeds a specified value.
Description
Technical field
The present invention relates to power inverter.
Background technology
In prior art, provide a kind of after the direct current power boosting utilizing booster circuit to be sent by solar cell, utilize inverter circuit to be converted to the alternating electromotive force synchronous with the electric power system of commercialization and to be added to the power inverter of commercial electric power system.
Commercial electric power system is sometimes because of natural phenomenas such as thunderbolts, and voltage instantaneous reduces, or causes instantaneous power failure, is called the phenomenon in so-called wink low (wink stops).The magnitude setting of power inverter increases every year, and such as, when generation region wink is low, power inverter can judge that electric power system stops extremely sometimes.In this situation, electric power system sometimes produces large electric power variation, makes electric power system self unstable.
In order to suppress the situation of the electric power system instability of commercialization, even if require that power inverter also remains in operation when wink is low, or the function (FRT (FaultRideThrough) function) of promptly output to electric power system being restored when wink low recovery.
Record in patent documentation 1 and be judged as that wink is low when the voltage of the DC line connecting booster circuit and inverter circuit exceedes higher limit, be transformed to the power inverter of wink low mode from normal mode.When the running recording power inverter in patent documentation 1 is from normal mode to wink low mode transfer, store the value of output current of inverter or the value of the direct current input current to booster circuit, when operating recovery, utilize the power inverter of the content of the value of this storage.
Prior art document
Patent documentation
Patent documentation 1: Japanese Unexamined Patent Publication 2012-55036 publication
Summary of the invention
The problem that invention will solve
But, in the power inverter that patent documentation 1 is recorded, when sometimes changing operation mode being judged as wink low, produce control lag, because the error detection of value that stores or error cause power inverter to stop.
The present application develops in light of this situation, even if its object is to provide a kind of generation wink low, also guarantees the power inverter of the steady operation of power inverter.
For solving the method for problem
The power inverter of the present application comprises: control step-up ratio becomes the booster circuit near maximum or maximum with the direct current power making solar cell export; Be transfused to the direct current power that exports from this booster circuit and this direct current power be converted to the inverter circuit of alternating electromotive force, described power inverter comprises control part, this control part with based on be input to inverter circuit direct current power voltage correction value correction described in step-up ratio, and increase correction value when the current value of alternating electromotive force exceedes setting.
In addition, another power inverter of the present invention comprises: control step-up ratio becomes the booster circuit near maximum or maximum with the direct current power making solar cell export; Be transfused to the direct current power that exports from this booster circuit and this direct current power be converted to the inverter circuit of alternating electromotive force, described power inverter comprises control part, this control part is input to the correction value of the voltage of the direct current power of inverter circuit when the current value based on alternating electromotive force is exceeded setting, be added to based in the revised step-up ratio of this voltage.
The effect of invention
Even if it is low that power inverter of the present invention produces wink, the mistakenly stop of power inverter also can be suppressed only.
Accompanying drawing explanation
Fig. 1 is the figure of the power inverter representing the present embodiment.
Fig. 2 is the control block diagram of the power inverter representing the present embodiment.
Fig. 3 is the flow chart of the control of the power inverter representing the present embodiment.
Reference text explanation
1 power inverter
2 electric power systems
3 booster circuits
4 inverter circuits
5 filter circuits
6 boost control circuits
7 inverter control circuits
8 solar cells
31 direct current reactors
32 switch elements
33 diodes
34 capacitors
41 ~ 44 switch elements
A1 variable
A2 variable
S1 the 1st operational ton
S2 the 2nd operational ton
Pa pulse signal
Pi1 ~ Pi2 pulse signal
Po alternating electromotive force
Vd direct voltage
Vdt target booster voltage
Vi input voltage
Vit target input voltage
Embodiment
In the present embodiment, by use the 1st operational ton of the step-up ratio of the booster circuit determined when controlling based on MPPT (MaximumPowerPointTracking: MPPT maximum power point tracking) mode the direct current power that solar cell exports and low based on wink time the 2nd operational ton (correction value) of booster voltage (direct voltage) that exports from booster circuit, control the step-up ratio of booster circuit, the stopping of the power inverter that misoperation can be suppressed to cause.
(embodiment 1)
As shown in Figure 1, power inverter 1 is connected with solar cell 8, and the direct current power that solar cell 8 exports is input to booster circuit 3, and after being converted to the alternating electromotive force synchronous with the electric power system 2 of commercialization, be added to this alternating electromotive force commercial electric power system 2.
Power inverter 1 comprises: booster circuit 3, inverter circuit 4, filter circuit 5, boost control circuit 6 (the 1st control circuit) and inverter control circuit 7 (the 2nd control circuit).
Booster circuit 3 is made up of the chopper circuit of nonisulated type, has direct current reactor 31, the switch element 32 boosted, diode 33 and capacitor 34.In addition, this booster circuit is not limited to nonisulated type, as long as the booster circuit etc. of insulated type can control the booster circuit of output voltage.
Booster circuit 3 ON duty ratio according to the rules makes the switch element 32 periodically ON/OFF of boosting, and inputted direct voltage is boosted with the step-up ratio expected and exported.In addition, because step-up ratio is determined by ON duty ratio, so control step-up ratio to be equal to control ON duty ratio.By changing the step-up ratio expected, booster circuit 3 controls the voltage of the direct current power that solar cell 8 exports and exports to inverter circuit 4.
Inverter circuit 4 is formed by the series circuit be connected together in series by switch element 41,42 with by the single-phase bridge connection circuit that the series circuit that switch element 43,44 is connected together in series is connected in parallel.According to the pulse signal (switching signal) generated based on PWM (pulse width modulation), by these switch elements 41 ~ 44 periodically ON/OFF, the direct current power exported is converted to the alternating electromotive force (intend like sinusoidal wave) synchronous with the electric power system of commercialization from booster circuit 3.After alternating electromotive force after this conversion is configured as sinusoidal wave shape by the filter circuit 5 (low pass filter) making radio-frequency component decay, the electric power system that is added to 2.This inverter circuit is not limited to the output of single phase alternating current (A.C.), also can be the inverter circuit exporting three-phase alternating current, in addition, be not limited to single-phase/heterogeneous bridging structure, also can be neutral point clamper mode, export the circuit structure of clamper mode or the more than enough level output of energy.
Boost control circuit 6 carries out the action of (1) ~ (4) below.(1) obtain for controlling booster circuit 3 with the direct current power making solar cell 8 and export for the 1st operational ton S1 (step-up ratio) near maximum or maximum.(2) based on the direct voltage Vd of the direct current power after the boosting exported from booster circuit 3, the 2nd operational ton S2 is obtained.2nd operational ton S2 is multiplied by after the variable a2 based on direct voltage Vd as correction value.(3) action with correction value correction the 1st operational ton S1 is carried out.This correction is the action of plus/minus the 2nd operational ton S2 (correction value) on the 1st operational ton S1.In (in addition, also can change algorithm in the mode taken advantage of/remove) this situation, also can in advance the variable a1 based on direct voltage Vd be multiplied as step-up ratio with the 1st operational ton S1.(4), when the output current of inverter circuit 4 exceedes setting, the correction value according to variable a2 is increased.That is, the correction value of large value is now used.
Boost control circuit 6 is by carrying out the action of above-mentioned (1) ~ (4), when the output current of inverter circuit 4 exceedes setting, the target booster voltage Vdt (constant assigned voltage) of the current potential do not used when making the direct voltage Vd of the direct current power exported from booster circuit 3 rise to running usually.Specifically, be shown in the control block diagram of boost control circuit 6 of Fig. 2 (a).Boost control circuit 6, in order to obtain correction value, carries out the direct voltage Vd exported from booster circuit 3 (being input to the direct voltage of the direct current power of inverter circuit 4) and target booster voltage Vdt be input to adder 66a and obtain the action of difference.Then, in operational part 62, obtain the 2nd operational ton S2 for making this difference vanishing.The action of this operational part 62 also can be the difference itself of target booster voltage Vdt and direct voltage Vd, also can for this difference be multiplied with the value of regulation, also can carry out function (PID etc. the predict computing) process specified, can set arbitrarily according to environmental conditions such as the specified of power inverter or the response speeds specified.The 2nd operational ton S2 from operational part 62 uses variable a2, after weighting circuit 67b weighting, is sent to adder 66c as correction value.Target booster voltage Vdt be higher than the voltage of electric power system 2 and be set in power inverter can the value of upper voltage limit in working range.That is, when exceeding this voltage, protective device carries out work, and power inverter shuts down.
Boost control circuit 6 also carries out the computing of the 1st operational ton S1.Boost control circuit 6 inputs input voltage Vi and the input current Ii of the booster circuit 3 exported from solar cell 8, these values is multiplied, obtains the output power P of solar cell 8.Then, by operational part 61, be that maximum mode obtains target input voltage Vit with solar cell 8 output power P.
The method of obtaining of target input voltage Vit is, the direction that the output power Pd of storage solar cell the last time 8 and target input voltage Vit of last time changes, at this output power P detected than last time, output power was large, target input voltage Vit is changed on the direction identical with last time.That is, make the situation that last time, target input voltage Vit reduced also same with this, target input voltage Vit is reduced, when the target input voltage Vit of last time is increased, same with this, also make target input voltage Vit increase.
On the contrary, when the output power P that this detects is less than the output power Pd of last time, target input voltage Vit with last time, rightabout was being changed.That is, when making the target input voltage Vit of last time reduce, this makes target input voltage Vit increase, and when making the target input voltage Vit of last time reduce, this makes target input voltage Vit increase.This MPPT action is carried out at operational part 61.
After obtaining target input voltage Vit, obtained the difference of the input voltage Vi of target input voltage Vit and booster circuit 3 by adder 66b.Then, the 1st operational ton S1 is obtained by operational part 63 in the mode that the difference of the input voltage Vi of target input voltage Vit and booster circuit 3 is zero.This operational part 63 is same with operational part 62, and environmental condition can be coordinated to carry out the process specified.1st operational ton S1 is sent to adder 66c as step-up ratio after using variable a1 weighting by weighting circuit 67a.
Variable a1, a2 of using in weighting circuit 67a, 67b as shown in Figure 3, are the variablees of the scope of 0 ~ 1, and these variablees a1, a2 sum is set as 1 (a1+a2=1) usually.In addition, variable a1, a2 change according to direct voltage Vd, and when direct voltage Vd becomes target booster voltage Vdt, variable a1 then becomes 0, and variable a2 becomes 1.In addition, when direct voltage Vd becomes target booster voltage Vs, variable a1 becomes 1, and variable a2 becomes 0.In weighting circuit 67b, be multiplied variable a2 with the 2nd operational ton S2 the process be weighted, so it is higher to become direct voltage Vd (being equivalent to the booster voltage exported from booster circuit 3), the value that the described 2nd operational ton S2 (correction value) after weighting is larger.Meanwhile, in weighting circuit 67a, be multiplied variable a1 with the 1st operational ton S1 the process be weighted, and direct voltage Vd more increases, and described 1st operational ton S1 is less.Direct voltage Vd when target booster voltage Vs is equivalent to when power inverter 1 exports rated electrical from inverter circuit 4 to electric power system 2 or exports the electric power of predetermined regulation.Such as, direct voltage Vd when power inverter 1 operates near specified output is target booster voltage Vs, and target booster voltage Vs also can be the value of this direct voltage Vd+ α.
Be sent to the 1st operational ton S1 of adder 66c and the 2nd operational ton S2 by (corrections) such as plus/minus, as operational ton Mv.Operational ton Mv is the signal of the ON duty ratio (step-up ratio) of the pulse signal Pa of the switch element 32 represented for driving booster circuit 3, based on this signal, by operational part 65 production burst signal Pa, be supplied to the switch element 32 of booster circuit 3.
Inverter control circuit 7 controls inverter circuit 4 becomes target power Pt with the alternating electromotive force Po making inverter circuit 4 and export, and carries out applying restriction with the action making the output current Io of alternating electromotive force Po be no more than rated current.
Specifically, be shown in the control block diagram of inverter control circuit 7 of Fig. 2 (b).Inverter control circuit 7 detects the output voltage Vo of inverter circuit 4, obtains the alternating electromotive force of inverter circuit 4 output for reaching the target output current Iot of the inverter circuit needed for target power Pt.Target output current Iot is imported into flow restricter (limiter) 72.In flow restricter 72, when target output current Iot exceedes rated current Ic, by target output current Iot clamper at rated current Ic.This rated current Ic be using target power Pt as value when the specified output power of such as power inverter or predetermined output power, according to the resistance to electric current of power inverter, also can use the value slightly larger than this value.In addition, when output voltage Io presses rated current Ic by clamper, direct voltage Vd exceedes target booster voltage Vs.
Then, target output current Iot is imported into adder 73, is obtained the difference of itself and output current Io by adder 73.The operation signal Mva making this difference vanishing is obtained at operational part 74.This operational part 74 and operational part 62, operational part 63 is same carries out the process consistent with environmental condition etc.Carry out the PWM (PulseWidthModulation: pulse width modulation) by this operation signal Mva modulated carrier at operational part 75, generate for making pulse signal Pi1, Pi2 of switch element 41 ~ 44 action of inverter circuit 4 and supplying to switch element 41 ~ 44.
Like this, power inverter 1 is controlled by boost control circuit 6, inverter control circuit 7, period in the normal scope that output current Io is no more than rated current Ic thus, restriction (clamper) is not applied, so direct voltage Vd converges on voltage Vs to the target output current Iot obtained by inverter control circuit 7.In addition, direct voltage Vd controls to not applying near voltage Vs when limiting target output current Iot by boost control circuit 6, and in this control, variable a1 is 1, variable a2 is 0, becomes based on the control of MPPT action.
When there is wink low (voltage reduction) in electric power system 2, the mode that inverter control circuit 7 becomes target power Pt with output power obtains target output current Iot.At this moment, target output current Iot increases the amount (target output current Iot=target power Pt/ system voltage) of the system voltage Vo step-down because wink is low, and target output current Iot by clamper (restriction) in rated current Ic.
If target output current Iot is limited in rated current Ic, then from the electric power of solar cell 8, the electric power that the electric power that namely booster circuit 3 exports exports than inverter circuit 4 is large.The difference of this electric power is charged by capacitor 34, and direct voltage Vd (voltage of capacitor 34) increases.
When direct voltage Vd becomes large, variable a1 reduces, and variable a2 increases.When direct voltage Vd reaches target booster voltage Vdt, (current value to the alternating electromotive force of electric power system 2 output exceedes setting (such as, load current value when electric power system 2 is normal) period), variable a1 is 0, variable a2 is 1, the control of boost control circuit 6 is from based on the control of MPPT action, and the mode that becoming becomes target booster voltage Vdt based on direct voltage Vd makes the control (becoming control during increase the 2nd operational ton S2) determining voltage of booster circuit 3 action.
When the low recovery of wink of electric power system 2, the voltage rise of electric power system 2, so the target output current Iot of the electric current exported from inverter control circuit 7 reduces.Target output current Iot reduces, and the restriction of target output current Iot is removed.
When the restriction of target output current Iot is removed, the output of inverter circuit 4 increases, the correspondingly charge discharge of capacitor 34, the voltage drop of direct voltage Vd.
When direct voltage Vd becomes large, variable a1 reduces, and variable a2 increases.Afterwards, direct voltage Vd reduces, and when reaching voltage Vs, variable a1 becomes 1, and variable a2 becomes 0, and the control of boost control circuit 6 becomes to make booster circuit 3 carry out the control of MPPT action for master.
Like this, in the present embodiment, MPPT action is carried out according to the 1st operational ton S1 at booster circuit, when making intermediate voltage increase according to the 2nd operational ton S2 when wink is low, can stop rising with target booster voltage Vdt, the stopping of the power inverter suppressing the rising of intermediate voltage (terminal voltage of capacitor 34) to produce.
In addition, wink, the restriction of the output current of inverter circuit was removed in low recovery afterwards, and target current value Iot becomes the value of specified output, so can promptly make output restore.
In addition, owing to using the 1st operational ton S1 and the 2nd operational ton S2, booster circuit is controlled, so low regardless of producing wink in electric power system 2, all do not change in the controll block of boost control circuit 6, the switching (also not needing to detect wink low) of the control not needing wink low.In addition, do not need to store wink low front controlled quentity controlled variable etc. yet.Therefore, it is possible to suppress the output current of the inverter stored because of control lag etc. or to the error detection of the direct current input current etc. of booster circuit or wink the mistakenly stop of power inverter 1 that causes of low error detection stop.
Being illustrated above to an embodiment of the invention, but above explanation is the explanation carried out in order to easy understand the present invention, and the present invention is not limited thereto.The present invention only otherwise depart from its purport, can change, improvement, and certainly also comprises the invention with its equivalence in the present invention.
Such as, both variable a1, a2 is used to control, as long as but action corresponding respectively when carrying out low with wink or normal, can be used any one.
Industry utilizes possibility
The power inverter of present embodiment, can as the solar cell system comprising solar cell 8.In addition, the alternating electromotive force of the power inverter output single-phase of present embodiment, but the power inverter that also can be used in the alternating electromotive force exporting three-phase.
Claims (5)
1. a power inverter, is characterized in that, comprising:
Control step-up ratio becomes the booster circuit near maximum or maximum with the direct current power making solar cell export; Be transfused to the direct current power that exports from this booster circuit and this direct current power be converted to the inverter circuit of alternating electromotive force,
Described power inverter comprises control part, this control part with based on be input to described inverter circuit direct current power voltage correction value correction described in step-up ratio, and increase correction value when the current value of described alternating electromotive force exceedes setting.
2. a power inverter, is characterized in that, comprising:
Control step-up ratio becomes the booster circuit near maximum or maximum with the direct current power making solar cell export; Be transfused to the direct current power that exports from this booster circuit and this direct current power be converted to the inverter circuit of alternating electromotive force,
Described power inverter comprises control part, is input to the correction value of the voltage of the direct current power of described inverter circuit when the current value based on described alternating electromotive force is exceeded setting by this control part, is added to based in the revised described step-up ratio of this voltage.
3. power inverter as claimed in claim 1 or 2, is characterized in that:
The voltage being input to the direct current power of described inverter circuit is higher, more increases described correction value.
4. the power inverter according to any one of claims 1 to 3, is characterized in that:
Described correction value is that the mode becoming assigned voltage with the output voltage of described booster circuit calculates.
5. the power inverter according to any one of Claims 1 to 4, is characterized in that, comprising:
Control the 1st control circuit of described booster circuit; With
Control the 2nd control circuit of described inverter circuit.
Applications Claiming Priority (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2014-112099 | 2014-05-30 | ||
| JP2014112099 | 2014-05-30 | ||
| JP2015-088903 | 2015-04-24 | ||
| JP2015088903A JP2016007122A (en) | 2014-05-30 | 2015-04-24 | Power converter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105281594A true CN105281594A (en) | 2016-01-27 |
Family
ID=55150067
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510289889.4A Pending CN105281594A (en) | 2014-05-30 | 2015-05-29 | Power conversion device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105281594A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113366404A (en) * | 2019-02-06 | 2021-09-07 | 松下知识产权经营株式会社 | Power system and power conversion device |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20110096579A1 (en) * | 2009-10-26 | 2011-04-28 | General Electric Company | Dc bus voltage control for two stage solar converter |
| WO2011135658A1 (en) * | 2010-04-26 | 2011-11-03 | 三菱電機株式会社 | System interconnection inverter |
| CN102474199A (en) * | 2010-02-26 | 2012-05-23 | 三洋电机株式会社 | Power conversion apparatus, grid connection apparatus, and grid connection system |
| CN102545673A (en) * | 2010-12-21 | 2012-07-04 | 通用电气公司 | Methods and systems for operating a two-stage power converter |
| JP2013110830A (en) * | 2011-11-18 | 2013-06-06 | Kyocera Corp | Power conditioner with dc power supply function and control method thereof |
-
2015
- 2015-05-29 CN CN201510289889.4A patent/CN105281594A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20110096579A1 (en) * | 2009-10-26 | 2011-04-28 | General Electric Company | Dc bus voltage control for two stage solar converter |
| CN102474199A (en) * | 2010-02-26 | 2012-05-23 | 三洋电机株式会社 | Power conversion apparatus, grid connection apparatus, and grid connection system |
| WO2011135658A1 (en) * | 2010-04-26 | 2011-11-03 | 三菱電機株式会社 | System interconnection inverter |
| CN102545673A (en) * | 2010-12-21 | 2012-07-04 | 通用电气公司 | Methods and systems for operating a two-stage power converter |
| JP2013110830A (en) * | 2011-11-18 | 2013-06-06 | Kyocera Corp | Power conditioner with dc power supply function and control method thereof |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113366404A (en) * | 2019-02-06 | 2021-09-07 | 松下知识产权经营株式会社 | Power system and power conversion device |
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Application publication date: 20160127 |