CN104901566A - Inversion device and control method - Google Patents
Inversion device and control method Download PDFInfo
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- CN104901566A CN104901566A CN201510078631.XA CN201510078631A CN104901566A CN 104901566 A CN104901566 A CN 104901566A CN 201510078631 A CN201510078631 A CN 201510078631A CN 104901566 A CN104901566 A CN 104901566A
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- 238000000034 method Methods 0.000 title claims abstract description 16
- 230000000052 comparative effect Effects 0.000 claims description 16
- 238000001514 detection method Methods 0.000 abstract description 6
- 238000006243 chemical reaction Methods 0.000 abstract description 5
- 230000002159 abnormal effect Effects 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 230000000295 complement effect Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000005286 illumination Methods 0.000 description 2
- 230000035515 penetration Effects 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 1
- 230000000694 effects 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
- H02M1/00—Details of apparatus for conversion
- H02M1/36—Means for starting or stopping converters
-
- 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
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H7/00—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions
- H02H7/10—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for converters; for rectifiers
- H02H7/12—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for converters; for rectifiers for static converters or rectifiers
- H02H7/122—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for converters; for rectifiers for static converters or rectifiers for inverters, i.e. dc/ac converters
- H02H7/1225—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for converters; for rectifiers for static converters or rectifiers for inverters, i.e. dc/ac converters responsive to internal faults, e.g. shoot-through
-
- 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
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02S—GENERATION OF ELECTRIC POWER BY CONVERSION OF INFRARED RADIATION, VISIBLE LIGHT OR ULTRAVIOLET LIGHT, e.g. USING PHOTOVOLTAIC [PV] MODULES
- H02S50/00—Monitoring or testing of PV systems, e.g. load balancing or fault identification
-
- 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
- H02M1/0003—Details of control, feedback or regulation circuits
-
- 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
- H02M1/0048—Circuits or arrangements for reducing losses
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B70/00—Technologies for an efficient end-user side electric power management and consumption
- Y02B70/10—Technologies improving the efficiency by using switched-mode power supplies [SMPS], i.e. efficient power electronics conversion e.g. power factor correction or reduction of losses in power supplies or efficient standby modes
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/50—Photovoltaic [PV] energy
- Y02E10/56—Power conversion systems, e.g. maximum power point trackers
Abstract
The invention discloses an inversion device and a control method, comprising a DC-DC converter, DC-AC converter and a control circuit. The DC-DC converter is used for converting the inputted power supply to the DC power supply according to the control signal. The DC-AC converter is coupled to the DC-DC converter for receiving the DC power supply and is used for generating AC power supply according to the DC power supply. The control circuit is coupled to the DC-DC converter and controls the operation of the DC-DC converter according to the reference power supply and the input power supply, detects the control signal and generates the detection result, and controls the reference power supply according to the detection result in order to regulate the obligation cycle. The inversion device and the control method can obtain the working state by detecting the control signal of the primary side conversion circuit, adaptively regulate the obligation cycle of the control signal, maintain the stable work in a interim mode and is applied in various energy conversion framework.
Description
Technical field
The present invention relates to inverter, particularly relate to a kind of mode of operation detecting primary side change-over circuit to adjust inverter and the control method thereof of primary side control signal adaptively.
Background technology
Photovoltaic DC-to-AC converter (Photovoltaic inverter) is that the DC power supply for being exported by solar panel is converted to AC power and exports electrical network to, and wherein the primary side change-over circuit of photovoltaic DC-to-AC converter can operate in degree of depth intermittent mode (deep burst mode) when low solar electric power exports.Such as: (1), when the electric power that solar panel exports is too little, can make primary side change-over circuit meeting penetration depth intermittent mode; And (2) are when intensity of illumination significantly reduces, the operating voltage of solar panel and Energy transmission can be in a low level, cause primary side change-over circuit penetration depth intermittent mode.
But when primary side change-over circuit operates in degree of depth intermittent mode, the internal circuit of photovoltaic DC-to-AC converter can occur because the out-put supply of primary side change-over circuit is not enough abnormal or stop running, causes the damage of circuit unit.Therefore, a kind of photovoltaic inverter state detecting circuit framework of innovation is needed, the side effect caused to avoid intermittent mode.
Therefore, a kind of inverter and control method thereof is needed to solve above-mentioned existing problems.
Summary of the invention
An object of the present invention is to provide a kind of mode of operation can detecting primary side change-over circuit to adjust the inverter of primary side control signal adaptively.
Another object of the present invention is to provide a kind of mode of operation can detecting primary side change-over circuit to adjust the control method of the inverter of primary side control signal adaptively.
To achieve these goals, the invention provides a kind of inverter, comprise:
Circulate direct current transducer always, in order to one input power is converted to a DC power supply according to a control signal;
One switcher for changing DC into AC, is coupled to described DC-DC transducer, in order to receive described DC power supply, and produces an AC power according to described DC power supply; And
One control circuit, be coupled to described DC-DC transducer, described control circuit is in order to produce described control signal to control the operation of described DC-DC transducer according to a reference power source and described input power, detect to produce a testing result to described control signal, and control described reference power source to adjust a responsibility cycle of described control signal according to described testing result.
Preferably, described control signal has one first level and one second level being different from described first level; And when described DC-DC transducer operates in an intermittent mode according to described control signal, described control signal can continue to be in described second level, and described control circuit detects described control signal and continues to be in the time of described second level to produce described testing result.
Preferably, when described testing result indicate described control signal continue to be in described second level more than a special time time, described control circuit can adjust a voltage quasi position of described reference power source.
Preferably, described control circuit makes comparisons to produce a comparative result to a voltage quasi position of described input power and a voltage quasi position of described reference power source, and produces described control signal according to described comparative result.
Preferably, when the described voltage quasi position that described comparative result indicates described input power is less than the described voltage quasi position of described reference power source, described DC-DC transducer can operate in an intermittent mode according to described control signal.
Preferably, described control circuit adjusts the described voltage quasi position of described reference power source according to described testing result, to adjust the described responsibility cycle of described control signal.
Preferably, described control signal has one first level and one second level being different from described first level; When described DC-DC transducer operates in described intermittent mode according to described control signal, described control signal can continue to be in described second level, and when described testing result indicate described control signal continue to be in described second level more than a special time time, described control circuit can reduce the described voltage quasi position of described reference power source.
Preferably, described control circuit can reduce the described voltage quasi position of described reference power source until described control signal is converted to described first level from described second level.
In order to realize another object of the present invention, the invention provides a kind of control method of inverter, wherein, described inverter comprises circulate direct current transducer and a switcher for changing DC into AC always, one input power is converted to a DC power supply by described DC-DC transducer, described DC power supply is converted to an AC power by described switcher for changing DC into AC, and described control method comprises:
A control signal is produced, to control the operation of described DC-DC transducer according to a reference power source and described input power;
Detect to produce a testing result to described control signal; And
Described reference power source is controlled to adjust a responsibility cycle of described control signal according to described testing result.
Preferably, the step producing a control signal according to a reference power source and described input power comprises:
Make comparisons to produce a comparative result to a voltage quasi position of described input power and a voltage quasi position of described reference power source; And
Described control signal is produced according to described comparative result.
Preferably, when the described voltage quasi position that described comparative result indicates described input power is less than the described voltage quasi position of described reference power source, described DC-DC transducer can operate in described intermittent mode according to described control signal.
Preferably, control described reference power source according to described testing result to comprise with the step of the described responsibility cycle adjusting described control signal:
The described voltage quasi position of described reference power source is adjusted, to adjust the described responsibility cycle of described control signal according to described testing result.
Preferably, described control signal has one first level and one second level being different from described first level; When described DC-DC transducer operates in described intermittent mode according to described control signal, described control signal can continue to be in described second level; And when described testing result indicate described control signal continue to be in described second level more than a special time time, the step adjusting the described voltage quasi position of described reference power source according to described testing result comprises:
Reduce the described voltage quasi position of described reference power source.
Preferably, the step reducing the described voltage quasi position of described reference power source comprises:
Reduce the described voltage quasi position of described reference power source until described control signal is converted to described first level from described second level.
Compared with prior art, inverter of the present invention can learn its operating state by the control signal of detecting primary side change-over circuit, and adjust the signal level/responsibility cycle of control signal adaptively, therefore stable running can be maintained in intermittent mode, and be widely used among various power conversion framework.
Accompanying drawing explanation
Fig. 1 is the structured flowchart of an embodiment of inverter of the present invention.
Fig. 2 is the signal waveforms of one of control signal shown in Fig. 1 specific implementation example.
Fig. 3 is the schematic diagram of one of inverter shown in Fig. 1 specific implementation example.
Fig. 4 is the local circuit schematic diagram of one of controller shown in Fig. 3 specific implementation example.
Fig. 5 is the signal waveforms of one of control signal shown in Fig. 3 specific implementation example.
[symbol description]
100,300: inverter
102: solar cell
110,310: DC-DC transducer
120: switcher for changing DC into AC
130,330: control circuit
322:LLC resonant converter
326: drive circuit
332: controller
336: treatment circuit
D
l, D
r: diode
R
1, R
2: resistance
C: electric capacity
V
pV: input power
V
bUS: DC power supply
V
aC: AC power
V
cMD: reference power source
DR: testing result
S
c: control signal
S
d: drive singal
V
c1, V
c2, V
cA, V
cB: voltage quasi position
T
0, t
1, t
2, t
3, T
a, T
b, T
c, T
d: the time
S
cL: left arm control signal
S
cR: right arm control signal
S
dL: left arm drive singal
S
dR: right arm drive singal
V
c: voltage
L1: the first level
L2: the second level
Embodiment
In order to make the content disclosed by the present invention more easily be understood, below especially exemplified by the example really can implemented according to this that embodiment discloses as the present invention.In addition, all may part, in graphic and execution mode, use the assembly/component/step of identical label, represent identical or like.
Inversion framework provided by the present invention learns the operating state of primary side change-over circuit by the control signal detecting primary side change-over circuit; and adjust the responsibility cycle of control signal according to detected result adaptively, therefore significantly can promote the flexibility ratio of inverter control and good circuit protection mechalusm is provided.For the ease of understanding technical characteristic of the present invention, be below the specific implementation example being used as inverter of the present invention with photovoltaic DC-to-AC converter, but inversion framework of the present invention is not limited to photovoltaic DC-to-AC converter.Further instruction is as follows.
Refer to Fig. 1, it is the structured flowchart of an embodiment of inverter of the present invention.Inverter 100 is coupled to a solar cell (Photovoltaic cell, PV cell) 102, and can including (but not limited to) the direct current transducer that circulates (direct current to direct current converter always, DC/DC converter) 110, one switcher for changing DC into AC (direct current to alternating current converter, DC/AC converter) 120 and a control circuit 130.DC-DC transducer 110 can receive the input power V that solar cell 102 provides
pV, and according to a control signal S
cby input power V
pVbe converted to a DC power supply V
bUS(such as, DC bus-bar voltage).Switcher for changing DC into AC 120 is coupled to DC-DC transducer 110, in order to receive DC power supply V
bUS, and according to DC power supply V
bUSproduce an AC power V
aC.In this embodiment (but the present invention is not limited thereto), DC-DC transducer 110 can comprise a LLC resonant converter (LLC resonant converter), improve conversion efficiency to utilize the characteristic of its soft switching and reduce electromagnetic interference, and switcher for changing DC into AC 120 also can be called direct current turns AC convertor (DC/AC inverter).
Control circuit 130 is coupled to DC-DC transducer 110, in order to foundation one reference power source V
cMDand input power V
pVproduce control signal S
cto control the operation of DC-DC transducer 110.For example (but the present invention is not limited thereto), control circuit 130 can with reference to power supply V
cMDwith input power V
pVmake comparisons to produce control signal S
c, and then control frequency of operation and the mode of operation (such as, normal mode or intermittent mode) of DC-DC transducer 110.In another example, control circuit 130 also can to reference power source V
cMDwith input power V
pVcarry out numerical operation to produce control signal S
c.
In order to monitor the operating state of inverter 100 in real time, control circuit 130 separately can to control signal S
ccarry out processing/detecting producing a testing result DR, and control reference power source V according to testing result DR
cMD, and then the control signal S of adjustment for controlling DC-DC transducer 110
c.For example (but the present invention is not limited thereto) please together with Fig. 1 to consult Fig. 2.Fig. 2 is the control signal S shown in Fig. 1
cone of the signal waveforms of specific implementation example.Control signal S
cone first level L1 and one second level L2 (being different from the first level L1) can be had, when DC-DC transducer 110 is in control signal S
cwhen continuing to be in the second level L2, then time-out Power convert operation (that is, operate in intermittent mode).Therefore, at control signal S
clevel can by adjustment reference power source V
cMDwhen changing, control circuit 130 just can adjust reference power source V according to testing result DR
cMDenergy level, with switching signal S
clevel, and then the in real time operation of adjustment DC-DC transducer 110 when intermittent mode, to prevent DC-DC transducer 110 abnormal electrical power supply.
In a specific implementation example, control circuit 130 also can control reference power source V according to testing result DR
cMDto adjust control signal S
cresponsibility cycle (duty cycle), and then control the operation of DC-DC transducer 110 when intermittent mode.In this specific implementation example, DC-DC transducer 110 is in time point t
1according to control signal S
coperate in intermittent mode, wherein DC-DC transducer 110 is in time point t
0~ t
1during open, and in time point t
1~ t
2during close.In addition, the overlong time continuing to be in closed condition due to DC-DC transducer 110 can cause abnormal electrical power supply, and the time that control circuit 130 can continue to be in closed condition by detection DC-DC transducer 110 produces testing result DR.
In this intermittent mode, control circuit 130 is planned in time point t
3open DC-DC transducer 110, but, due to time point t
1with time point t
3between the time interval (in this embodiment, equal time point t more than a special time
1with time point t
2between the time interval), this will cause DC-DC transducer 110 in time point t
3can abnormal electrical power supply be there is before, therefore, when testing result DR indicate time that DC-DC transducer 110 is in closedown exceed this special time (that is, control signal S
ccontinue to be in the second level L2 and exceed this special time) time, control circuit 130 can by with reference to power supply V
cMDvoltage quasi position V
c1be adjusted to voltage quasi position V
c2, to make control signal S
cin advance in time point t
2switching signal level to the first level L1, now, DC-DC transducer 110 will shift to an earlier date in time point t
2open.In other words, control circuit 130 can by adjustment reference power source V
cMDvoltage quasi position V
c1change control signal S
cresponsibility cycle, to reach the object controlling the open and close opportunity of DC-DC transducer 110 when the intermittent mode.
In order to understand technical characteristic of the present invention further, below adopt a specific implementation example to further illustrate the details of inverter of the present invention, but other circuit realiration framework based on the circuit framework shown in Fig. 1 is also feasible.Refer to Fig. 3, it is the schematic diagram of one of the inverter 100 shown in Fig. 1 specific implementation example.In this specific implementation example, inverter 300 comprises circulate direct current transducer 310, control circuit 330 and the switcher for changing DC into AC shown in Fig. 1 120 always, and the DC-DC transducer 110 wherein shown in Fig. 1 can be realized by DC-DC transducer 310 and control circuit 330 respectively with control circuit 130.Control circuit 330 can including (but not limited to) controller 332 and a treatment circuit 336, and its middle controller 332 can to control signal S
ccarry out detecting to produce testing result DR, and produce/control reference power source V according to testing result DR
cMD, and treatment circuit 336 can according to reference power source V
cMDwith input power V
pVproduce control signal S
c.DC-DC transducer 310 can including (but not limited to) a LLC resonant converter 322 and one drive circuit 326, wherein the drive circuit 326 control signal S that can produce according to control circuit 330
cproduce a drive singal S
d, and LLC resonant converter 322 just can according to drive singal S
dby input power V
pVbe converted to DC power supply V
bUS.
In this specific implementation example, LLC resonant converter 322 can comprise a left arm switch and a right arm switch (not being illustrated in Fig. 3), wherein, this left arm switch and this right arm switch can be made up of upper switch and lower switch separately, and the control signal of two switches up and down of this left arm switch is complementary, the control signal of two switches up and down of this right arm switch is also complementary.Aforementioned is the architecture of LLC resonant converter 322, due to the technology emphasis of this architecture non-invention, therefore, seldom explains at this.In this specific implementation example, the drive singal S that LLC resonant converter 322 receives
da left arm drive singal S can be comprised
dLwith a right arm drive singal S
dR, and the control signal S that treatment circuit 336 produces
ca left arm control signal S can be comprised
cLwith a right arm control signal S
cR.About detection control signal S
ca specific implementation can consult Fig. 4.Fig. 4 depicts the local circuit schematic diagram of one of the controller 332 shown in Fig. 3 specific implementation example.As shown in Figure 4, controller 332 can by the voltage V of Detection capacitance C
clearn control signal S
cinformation, its middle controller 332 can via diode D
l, resistance R
1and resistance R
2receive left arm control signal S
cL, and via diode D
r, resistance R
1and resistance R
2receive and right arm control signal S
cR.But the signal acquisition framework shown in Fig. 4 is needing only for explanation, is not used as the restriction of the present invention.
Control circuit 330 can to input power V
pVa voltage quasi position and reference power source V
cMDa voltage quasi position make comparisons to produce a comparative result, and produce control signal S according to this comparative result
c(left arm control signal S
cLwith right arm control signal S
cR).For example, treatment circuit 336 can comprise a comparator (not being illustrated in Fig. 3), and in order to carry out the comparison of voltage quasi position to produce this comparative result, treatment circuit 336 just can produce control signal S according to this comparative result
c.Wherein, the function of aforementioned comparator, the controller circuitry that also can be made up of an operational amplifier, a resistance and an electric capacity is reached.By adjustment control signal S
cfrequency, responsibility cycle ... etc., make DC-DC transducer 310 (LLC resonant converter 322) can in different solar energy output powers, under operating in different patterns, such as normal mode or intermittent mode.In addition, continue to be in the overlong time of closed condition in order to avoid DC-DC transducer 310 and cause abnormal electrical power supply, control circuit 330 can adjust reference power source V according to testing result DR
cMDthis voltage quasi position to adjust control signal S
c(such as, adjusting signal level and/or responsibility cycle).
For example, when testing result DR indicate time that DC-DC transducer 310 continues to be in closed condition more than a special time time, control circuit 330 can reduce reference power source V
cMDvoltage quasi position to adjust control signal S
cresponsibility cycle, DC-DC transducer 310 is opened.Please consult Fig. 5 together with Fig. 3.Fig. 5 is the control signal S shown in Fig. 3
cone of the signal waveforms of specific implementation example.In this specific implementation example, DC-DC transducer 310 is in time point T
a~ T
bduring open, and in time point T
b~ T
cduring close.When DC-DC transducer 310 is according to control signal S
cwhen operating in an intermittent mode, (such as, intensity of illumination is in time point T
bdie-off), controller 332 can produce testing result DR by the shut-in time detecting DC-DC transducer 310, and adjusts reference power source V according to testing result DR
cMDvoltage quasi position V
cA.When the shut-in time that testing result DR indicates DC-DC transducer 310 more than a special time time, control circuit 330 can by reduction reference power source V
cMDvoltage quasi position V
cAadjust control signal S
c, wherein control circuit 330 can reduce voltage quasi position V
cAuntil control signal S
c(such as, time point T till DC-DC transducer 310 is opened
c).As shown in Figure 5, not with reference to power supply V
cMDvoltage quasi position V
cAcome down to voltage quasi position V
cBbefore, treatment circuit 336 is planned in time point T
dswitch left arm control signal S
cLand right arm control signal S
cRsignal level; As reference power source V
cMDvoltage quasi position V
cAbe adjusted to voltage quasi position V
cBtime, treatment circuit 336 just can in advance in time point T
cswitch left arm control signal S
cLand right arm control signal S
cRsignal level, with the overlong time avoiding DC-DC transducer 310 to continue to be in closed condition.
More than adjust control signal S
cspecific implementation be only for explanations need, be not used as the restriction of the present invention.In addition, when adopting the power supply changeover device of other form to realize the DC-DC transducer 310 shown in Fig. 3, type/the number of the control signal that DC-DC transducer 310 receives may have corresponding adjustment, and the adjustment mode of control signal may also can be different.
Moreover, as long as the control circuit shown in Fig. 3 330 can by detection control signal S
cadjust reference power source V
cMD, and then adjustment control signal S
cresponsibility cycle, adopt other circuit framework to be also feasible to realize control circuit 330.For example, control circuit 330 also can store input power V
pV, reference power source V
cMDwith control signal S
cthe relation table of responsibility cycle, control circuit 330 just can select reference power source V according to testing result DR
cMDvoltage quasi position.
It should be noted that the above controlling mechanism about the inverter 300 shown in Fig. 3 also can be applicable to the inverter 100 shown in Fig. 1.Comprehensively above-mentioned, inverter of the present invention can learn its operating state by the control signal of detecting primary side change-over circuit, and adjust the signal level/responsibility cycle of control signal adaptively, therefore stable running can be maintained in intermittent mode, and be widely used among various power conversion framework.
Above disclosedly be only the preferred embodiments of the present invention, certainly can not limit the interest field of the present invention with this, therefore according to the equivalent variations that the present patent application the scope of the claims is done, still belong to the scope that the present invention is contained.
Claims (14)
1. an inverter, is characterized in that, comprises:
Circulate direct current transducer always, in order to one input power is converted to a DC power supply according to a control signal;
One switcher for changing DC into AC, is coupled to described DC-DC transducer, in order to receive described DC power supply, and produces an AC power according to described DC power supply; And
One control circuit, be coupled to described DC-DC transducer, described control circuit is in order to produce described control signal to control the operation of described DC-DC transducer according to a reference power source and described input power, detect to produce a testing result to described control signal, and control described reference power source to adjust a responsibility cycle of described control signal according to described testing result.
2. inverter according to claim 1, is characterized in that, described control signal has one first level and one second level being different from described first level; And when described DC-DC transducer operates in an intermittent mode according to described control signal, described control signal can continue to be in described second level, and described control circuit detects described control signal and continues to be in the time of described second level to produce described testing result.
3. inverter according to claim 2, is characterized in that, when described testing result indicate described control signal continue to be in described second level more than a special time time, described control circuit can adjust a voltage quasi position of described reference power source.
4. inverter according to claim 1, it is characterized in that, described control circuit makes comparisons to produce a comparative result to a voltage quasi position of described input power and a voltage quasi position of described reference power source, and produces described control signal according to described comparative result.
5. inverter according to claim 4, it is characterized in that, when the described voltage quasi position that described comparative result indicates described input power is less than the described voltage quasi position of described reference power source, described DC-DC transducer can operate in an intermittent mode according to described control signal.
6. inverter according to claim 4, is characterized in that, described control circuit adjusts the described voltage quasi position of described reference power source according to described testing result, to adjust the described responsibility cycle of described control signal.
7. inverter according to claim 6, is characterized in that, described control signal has one first level and one second level being different from described first level; When described DC-DC transducer operates in described intermittent mode according to described control signal, described control signal can continue to be in described second level, and when described testing result indicate described control signal continue to be in described second level more than a special time time, described control circuit can reduce the described voltage quasi position of described reference power source.
8. inverter according to claim 7, is characterized in that, described control circuit can reduce the described voltage quasi position of described reference power source until described control signal is converted to described first level from described second level.
9. the control method of an inverter, it is characterized in that, described inverter comprises circulate direct current transducer and a switcher for changing DC into AC always, one input power is converted to a DC power supply by described DC-DC transducer, described DC power supply is converted to an AC power by described switcher for changing DC into AC, and described control method comprises:
A control signal is produced, to control the operation of described DC-DC transducer according to a reference power source and described input power;
Detect to produce a testing result to described control signal; And
Described reference power source is controlled to adjust a responsibility cycle of described control signal according to described testing result.
10. control method according to claim 9, is characterized in that, the step producing a control signal according to a reference power source and described input power comprises:
Make comparisons to produce a comparative result to a voltage quasi position of described input power and a voltage quasi position of described reference power source; And
Described control signal is produced according to described comparative result.
11. control methods according to claim 10, it is characterized in that, when the described voltage quasi position that described comparative result indicates described input power is less than the described voltage quasi position of described reference power source, described DC-DC transducer can operate in described intermittent mode according to described control signal.
12. control methods according to claim 9, is characterized in that, control described reference power source comprise with the step of the described responsibility cycle adjusting described control signal according to described testing result:
The described voltage quasi position of described reference power source is adjusted, to adjust the described responsibility cycle of described control signal according to described testing result.
13. control methods according to claim 12, is characterized in that, described control signal has one first level and one second level being different from described first level; When described DC-DC transducer operates in described intermittent mode according to described control signal, described control signal can continue to be in described second level; And when described testing result indicate described control signal continue to be in described second level more than a special time time, the step adjusting the described voltage quasi position of described reference power source according to described testing result comprises:
Reduce the described voltage quasi position of described reference power source.
14. control methods according to claim 13, is characterized in that, the step reducing the described voltage quasi position of described reference power source comprises:
Reduce the described voltage quasi position of described reference power source until described control signal is converted to described first level from described second level.
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Families Citing this family (22)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP6536346B2 (en) * | 2015-10-19 | 2019-07-03 | 住友電気工業株式会社 | Power converter and control method thereof |
| TWI551021B (en) * | 2015-11-25 | 2016-09-21 | 財團法人金屬工業研究發展中心 | Flyback power converter and control method thereof |
| CN105529743B (en) * | 2016-02-22 | 2018-12-18 | 珠海格力电器股份有限公司 | A kind of photovoltaic system and grid-connected power detecting method, device |
| CN106353614B (en) * | 2016-08-29 | 2020-01-21 | 许继集团有限公司 | Island detection method and device for direct current system |
| CN107026606A (en) * | 2016-08-29 | 2017-08-08 | 广西塔锡科技有限公司 | A kind of anti-phase transformer of photovoltaic |
| CN106602915A (en) * | 2016-09-28 | 2017-04-26 | 深圳市盈动力科技有限公司 | Inversion device power limitation circuit and inversion device |
| CN106443343A (en) * | 2016-09-30 | 2017-02-22 | 国网福建省电力有限公司 | Small-current grounding fault positioning method employing transient zero sequence current |
| CN106787624A (en) * | 2016-12-28 | 2017-05-31 | 滁州品之达电器科技有限公司 | A kind of control method of inverter |
| CN106921146B (en) * | 2017-03-20 | 2019-09-13 | 特变电工西安电气科技有限公司 | A kind of the switching overvoltage protective device and method of multilevel photovoltaic grid-connected inverter |
| CN106972771A (en) * | 2017-05-23 | 2017-07-21 | 唐瑭 | A kind of level approach method, level approach device and control device |
| CN107171289A (en) * | 2017-06-06 | 2017-09-15 | 江西科技学院 | A kind of protection circuit |
| KR101957575B1 (en) | 2017-06-23 | 2019-03-13 | 인투코어테크놀로지 주식회사 | Power supply supporting device and method of supporting power supply to load |
| JP6930370B2 (en) | 2017-10-30 | 2021-09-01 | オムロン株式会社 | Ground fault detector |
| JP6323635B1 (en) * | 2017-11-24 | 2018-05-16 | 三菱電機株式会社 | Parallel power supply |
| CN108270239A (en) * | 2018-01-30 | 2018-07-10 | 国网上海市电力公司 | A kind of distribution network electric energy quality disturbing source direction determining method containing distributed generation resource |
| WO2019159834A1 (en) * | 2018-02-15 | 2019-08-22 | 日本電産株式会社 | Power conversion device, drive device, and power steering device |
| FR3083394B1 (en) * | 2018-06-29 | 2021-03-19 | Valeo Equip Electr Moteur | POWER COMPONENT PROTECTION DEVICE FOR A TRANSISTOR BRIDGE |
| JP7135548B2 (en) * | 2018-08-01 | 2022-09-13 | 株式会社ジェイテクト | Power supply monitoring device and power supply monitoring method |
| CN111256345B (en) * | 2018-11-30 | 2021-05-07 | 杭州先途电子有限公司 | Photovoltaic air conditioner control method, controller and photovoltaic air conditioner |
| TWI703423B (en) | 2019-06-19 | 2020-09-01 | 群光電能科技股份有限公司 | Power supply device and a power supply method |
| CN113012981A (en) * | 2019-12-20 | 2021-06-22 | 施耐德电气工业公司 | Contactor, control device and control method thereof |
| TWI822561B (en) * | 2023-01-17 | 2023-11-11 | 固緯電子實業股份有限公司 | Device to improve current limiting response speed and waveform |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1613173A (en) * | 2002-01-08 | 2005-05-04 | 三垦电气株式会社 | Power factor improving converter and control method thereof |
| TW200517803A (en) * | 2003-11-25 | 2005-06-01 | Delta Electronics Inc | Maximum-power tracking method and device of solar power generation system |
| US20090086517A1 (en) * | 2007-10-01 | 2009-04-02 | Silicon Laboratories Inc. | Dc/dc boost converter with resistorless current sensing |
| CN101795076A (en) * | 2009-01-29 | 2010-08-04 | 富士电机系统株式会社 | Power converter and method for controlling power converter |
| CN102835011A (en) * | 2010-02-22 | 2012-12-19 | 佩特拉太阳能公司 | Method and system for controlling resonant converters used in solar inverters |
| US20130314949A1 (en) * | 2012-05-25 | 2013-11-28 | Delta Electronics, Inc. | Power converter and method of controlling the same |
| CN203387430U (en) * | 2013-07-25 | 2014-01-08 | 天津大学 | Micro photovoltaic grid connected inverter for optimization of direct current bus capacitor |
Family Cites Families (80)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5327335A (en) * | 1992-09-28 | 1994-07-05 | Sundstrand Corporation | Harmonic feedback control for an inverter |
| CN2189792Y (en) * | 1994-04-28 | 1995-02-15 | 巫忆陵 | High and low voltage relay with backlash |
| JP3227480B2 (en) * | 1996-05-29 | 2001-11-12 | シャープ株式会社 | Inverter device islanding operation detection method and inverter device |
| US6038142A (en) * | 1998-06-10 | 2000-03-14 | Lucent Technologies, Inc. | Full-bridge isolated Current Fed converter with active clamp |
| JP2002233045A (en) * | 2001-02-02 | 2002-08-16 | Canon Inc | Ground detecting device for photovoltaic power generation system and method |
| JP2002252986A (en) * | 2001-02-26 | 2002-09-06 | Canon Inc | Inverter, power supply system and method for reducing leakage current in power supply system |
| JP2002367768A (en) * | 2001-06-04 | 2002-12-20 | Matsushita Electric Ind Co Ltd | Power source for driving magnetron |
| JP2003018854A (en) * | 2001-07-02 | 2003-01-17 | Honda Motor Co Ltd | Resonance-type inverter device |
| JP2003098215A (en) * | 2001-09-26 | 2003-04-03 | Canon Inc | Earth detection method and device in power conversion system |
| TW548886B (en) * | 2001-10-16 | 2003-08-21 | Know Entpr Co Ltd U | Three-phase shunt type active power filter capable of operating in parallel |
| DE10156963A1 (en) * | 2001-11-20 | 2003-06-05 | Fritz Frey | Circuit arrangement for the reliable switching of circuits |
| US7492620B2 (en) * | 2002-11-29 | 2009-02-17 | Rohm Co., Ltd. | DC-AC converter and controller IC thereof |
| US7015597B2 (en) * | 2003-09-11 | 2006-03-21 | Square D Company | Power regulator for power inverter |
| JP4491622B2 (en) * | 2003-11-10 | 2010-06-30 | 学校法人東京電機大学 | Solar power plant |
| CN1898853B (en) * | 2003-12-22 | 2010-06-09 | 皇家飞利浦电子股份有限公司 | Switched mode power supply |
| TWI296460B (en) * | 2006-01-18 | 2008-05-01 | Univ Yuan Ze | High-performance power conditioner for clean energy with low input voltage |
| TWI296457B (en) * | 2006-01-18 | 2008-05-01 | Univ Yuan Ze | High-performance power conditioner for solar photovoltaic system |
| US7977929B2 (en) * | 2006-03-02 | 2011-07-12 | Semiconductor Components Industries, Llc | Method for regulating a voltage and circuit therefor |
| TWI320626B (en) * | 2006-09-12 | 2010-02-11 | Ablerex Electronics Co Ltd | Bidirectional active power conditioner |
| TW200818671A (en) * | 2006-10-05 | 2008-04-16 | Holtek Semiconductor Inc | Direct-current (DC) power switching device |
| US7495410B2 (en) * | 2007-01-30 | 2009-02-24 | Rockwell Automation Technologies, Inc. | Systems and methods for improved motor drive power factor control |
| KR101194833B1 (en) * | 2007-08-03 | 2012-10-25 | 페어차일드코리아반도체 주식회사 | Inverter driver device and lamp driver device thereof |
| US7945413B2 (en) * | 2007-09-04 | 2011-05-17 | Solarbridge Technologies, Inc. | Voltage-sensed system and method for anti-islanding protection of grid-connected inverters |
| EP2034600B1 (en) * | 2007-09-05 | 2010-12-15 | ABB Oy | Single-phase to three-phase converter |
| US7986539B2 (en) * | 2007-09-26 | 2011-07-26 | Enphase Energy, Inc. | Method and apparatus for maximum power point tracking in power conversion based on dual feedback loops and power ripples |
| US8796884B2 (en) * | 2008-12-20 | 2014-08-05 | Solarbridge Technologies, Inc. | Energy conversion systems with power control |
| TW201034354A (en) * | 2008-12-20 | 2010-09-16 | Azuray Technologies Inc | Energy conversion systems with power control |
| US20100157632A1 (en) * | 2008-12-20 | 2010-06-24 | Azuray Technologies, Inc. | Energy Conversion Systems With Power Control |
| US8598741B2 (en) * | 2008-12-23 | 2013-12-03 | Samsung Electro-Mechanics Co, Ltd. | Photovoltaic and fuel cell hybrid generation system using single converter and single inverter, and method of controlling the same |
| CN201438776U (en) * | 2009-04-16 | 2010-04-14 | 永磁电子（东莞）有限公司 | High-frequency generator circuit of electrodeless lamp |
| CN201392462Y (en) * | 2009-04-22 | 2010-01-27 | 陈国真 | Energy-saving switch device |
| CN101552572B (en) * | 2009-05-18 | 2011-01-05 | 浙江大学 | Parallel inverter current control method adopting voltage differential compensation |
| CN102474186A (en) * | 2009-07-24 | 2012-05-23 | Nec显示器解决方案株式会社 | Switching power source and electronic device using the same |
| JP4913849B2 (en) * | 2009-07-29 | 2012-04-11 | 山洋電気株式会社 | System-linked inverter device and control method thereof |
| US20110044083A1 (en) * | 2009-08-20 | 2011-02-24 | Christopher Thompson | Adaptive Photovoltaic Inverter |
| TWI393333B (en) * | 2009-09-22 | 2013-04-11 | Richpower Microelectronics | Controller chip and protection method for a power converter |
| TWM380576U (en) * | 2009-11-02 | 2010-05-11 | Ampower Technology Co Ltd | Photovoltaic module and power supply system using the same |
| CN101728957B (en) * | 2009-11-24 | 2011-09-28 | 华东交通大学 | Method for reducing no-load loss of inverter with two-stage structure |
| CN102118018B (en) * | 2009-12-31 | 2015-07-08 | 天津市松正电动汽车技术股份有限公司 | Protection circuit with functions of upper limit and lower limit |
| US8362732B2 (en) * | 2010-02-02 | 2013-01-29 | GM Global Technology Operations LLC | Motor phase winding fault detection method and apparatus |
| CN102148584B (en) * | 2010-02-10 | 2013-04-17 | 上海英孚特电子技术有限公司 | Compensation method of direct current (DC) voltage fluctuation of photovoltaic grid-connected inverter |
| KR101090263B1 (en) * | 2010-03-08 | 2011-12-07 | 헥스파워시스템(주) | Ground fault detection device and method with direct current wire for system of photovoltaic power generation |
| JP5045772B2 (en) * | 2010-03-11 | 2012-10-10 | オムロン株式会社 | Capacitor capacity missing detection method in power conditioner, power conditioner for implementing the same, and photovoltaic power generation system including the same |
| KR101089906B1 (en) * | 2010-04-02 | 2011-12-05 | 성균관대학교산학협력단 | Maximum power point tracker, power conversion controller, power inverter of insulating structure, and method for maximum power point tracking of power inverter |
| US9673729B2 (en) * | 2010-06-25 | 2017-06-06 | Massachusetts Institute Of Technology | Power processing methods and apparatus for photovoltaic systems |
| CN101950976B (en) * | 2010-08-25 | 2012-11-28 | 常熟开关制造有限公司(原常熟开关厂） | Grid-connected operation method of grid-connected type photovoltaic inverter |
| CN101950985B (en) * | 2010-11-01 | 2013-07-03 | 上海兆能电力电子技术有限公司 | Method for suppressing output harmonic wave and direct current component of single-phase grid-combined photovoltaic inverter |
| TWM408678U (en) * | 2010-11-16 | 2011-08-01 | Allis Electric Co Ltd | Photovoltaic powered system |
| US8531123B2 (en) * | 2010-12-20 | 2013-09-10 | O2Micro, Inc. | DC/DC converter with multiple outputs |
| CN102025291A (en) * | 2010-12-20 | 2011-04-20 | 东南大学 | Photovoltaic assembly with MPPT (Maximum Power Point Tracking) module |
| EP2477298B1 (en) * | 2011-01-15 | 2021-04-21 | GE Energy Power Conversion Technology Limited | Controllers for static energy supply units |
| CN102118028B (en) * | 2011-01-27 | 2013-01-23 | 华中科技大学 | Method for suppressing and controlling current harmonics of three-phase LCL (Lower Control Limit) type grid-connected inverter |
| CN102130610B (en) * | 2011-01-31 | 2013-02-27 | 天津大学 | Method for controlling constant-voltage discharging of energy storage system of flywheel |
| JP2012173773A (en) * | 2011-02-17 | 2012-09-10 | Toshiba Corp | Power conversion device |
| TW201250429A (en) * | 2011-06-15 | 2012-12-16 | Solarrich Applied Energy & Technology Co Ltd | Method for optimizing output power of solar cell |
| CN102223100A (en) * | 2011-06-17 | 2011-10-19 | 北京中能清源科技有限公司 | Control method of three-phase grid-connected inverter based on modified proportional resonant regulator |
| CN102244497B (en) * | 2011-07-08 | 2013-05-08 | 大禹电气科技股份有限公司 | Frequency conversion control method and device |
| CN102904273B (en) * | 2011-07-29 | 2015-05-20 | 通用电气公司 | Maximum power point tracking (MPPT) control of energy conversion system and relevant method |
| TWI444807B (en) * | 2011-08-23 | 2014-07-11 | Univ Nat Cheng Kung | Analog control apparatus of inverter |
| CN102307007B (en) * | 2011-09-13 | 2013-11-06 | 矽力杰半导体技术(杭州)有限公司 | PFC (power factor correction) control circuit based on master-slave interlaced critical conduction mode and control method thereof |
| CN202372616U (en) * | 2011-11-25 | 2012-08-08 | 比亚迪股份有限公司 | Signal fault detection circuit |
| TWI481146B (en) * | 2011-12-02 | 2015-04-11 | Darfon Electronics Corp | Off-grid solar inverter system without a battery and control method thereof |
| TWM426948U (en) * | 2011-12-09 | 2012-04-11 | Topper Sun Energy Technology | Improvement of solar power generation system inverter |
| US9653923B2 (en) * | 2011-12-12 | 2017-05-16 | Avago Technologies General Ip (Singapore) Pte. Ltd. | Resonant power management architectures |
| US9143056B2 (en) * | 2011-12-16 | 2015-09-22 | Empower Micro Systems, Inc. | Stacked voltage source inverter with separate DC sources |
| CN102496960A (en) * | 2011-12-24 | 2012-06-13 | 朱建国 | Photovoltaic grid-connected inverter and method for reducing working loss of photovoltaic grid-connected inverter |
| CN102611341B (en) * | 2012-03-12 | 2014-07-30 | 深圳市英威腾电气股份有限公司 | Photovoltaic inverter and method for tracking maximum power of same |
| TWI464555B (en) * | 2012-03-22 | 2014-12-11 | 中原大學 | Photovoltaic system having power-increment-aided incremental-conductance maximum power point tracking controller using constant-frequency variable-duty control and method thereof |
| CN102611141A (en) * | 2012-03-30 | 2012-07-25 | 南京大学 | MPPT (maximum power point tracking) control device and method of photovoltaic inverter based on perturbation method |
| CN202872384U (en) * | 2012-07-24 | 2013-04-10 | 华南理工大学 | Three-ring control device of single-stage photovoltaic grid-connected inversion system |
| CN102882401A (en) * | 2012-09-19 | 2013-01-16 | 华为技术有限公司 | Inverter with wide voltage input range and input-stage circuit thereof |
| CN102880223A (en) * | 2012-09-27 | 2013-01-16 | 易霸科技(威海)股份有限公司 | Analog circuit implementation method for MPPT (maximum power point tracking) of low-power photovoltaic inverter system |
| CN202880967U (en) * | 2012-10-19 | 2013-04-17 | 深圳市天源新能源有限公司 | Photovoltaic seawater desalination system and photovoltaic seawater desalination inverter |
| CN202888934U (en) * | 2012-11-13 | 2013-04-17 | 国家电网公司 | Soft start circuit and charger |
| CN203135741U (en) * | 2013-01-05 | 2013-08-14 | 苏州泽众新能源科技有限公司 | Multifunctional power converter |
| TWI466403B (en) * | 2013-01-30 | 2014-12-21 | Chicony Power Tech Co Ltd | Solar energy conversion apparatus |
| CN203243242U (en) * | 2013-03-19 | 2013-10-16 | 广东工业大学 | Single-phase photovoltaic grid-connected inverter |
| CN103337901B (en) * | 2013-06-28 | 2016-03-30 | 华为技术有限公司 | The method of uninterrupted power supply and uninterrupted power supply |
| CN103501555B (en) * | 2013-09-25 | 2015-02-18 | 电子科技大学 | Digital phase locking and frequency tracking electromagnetic induction heating power controller |
| CN103558496B (en) * | 2013-11-14 | 2016-08-17 | 阳光电源股份有限公司 | A kind of one pole earthed system and failure detector, method |
-
2015
- 2015-01-22 CN CN201510031553.8A patent/CN104868764B/en active Active
- 2015-01-23 CN CN201510034255.4A patent/CN104868770B/en active Active
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- 2015-01-27 CN CN201510039055.8A patent/CN104868766A/en active Pending
- 2015-01-27 CN CN201510039793.2A patent/CN104868493B/en active Active
- 2015-01-30 TW TW104103281A patent/TWI548192B/en active
- 2015-01-30 TW TW104103278A patent/TWI548197B/en active
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Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1613173A (en) * | 2002-01-08 | 2005-05-04 | 三垦电气株式会社 | Power factor improving converter and control method thereof |
| TW200517803A (en) * | 2003-11-25 | 2005-06-01 | Delta Electronics Inc | Maximum-power tracking method and device of solar power generation system |
| US20090086517A1 (en) * | 2007-10-01 | 2009-04-02 | Silicon Laboratories Inc. | Dc/dc boost converter with resistorless current sensing |
| CN101795076A (en) * | 2009-01-29 | 2010-08-04 | 富士电机系统株式会社 | Power converter and method for controlling power converter |
| CN102835011A (en) * | 2010-02-22 | 2012-12-19 | 佩特拉太阳能公司 | Method and system for controlling resonant converters used in solar inverters |
| US20130314949A1 (en) * | 2012-05-25 | 2013-11-28 | Delta Electronics, Inc. | Power converter and method of controlling the same |
| CN203387430U (en) * | 2013-07-25 | 2014-01-08 | 天津大学 | Micro photovoltaic grid connected inverter for optimization of direct current bus capacitor |
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