CN101917134A - High-frequency isolated grid-connected inverter circuit - Google Patents
High-frequency isolated grid-connected inverter circuit Download PDFInfo
- Publication number
- CN101917134A CN101917134A CN2010102682670A CN201010268267A CN101917134A CN 101917134 A CN101917134 A CN 101917134A CN 2010102682670 A CN2010102682670 A CN 2010102682670A CN 201010268267 A CN201010268267 A CN 201010268267A CN 101917134 A CN101917134 A CN 101917134A
- Authority
- CN
- China
- Prior art keywords
- switching tube
- diode
- unit
- inductance
- frequency
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M7/00—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output
- H02M7/42—Conversion of dc power input into ac power output without possibility of reversal
- H02M7/44—Conversion of dc power input into ac power output without possibility of reversal by static converters
- H02M7/48—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
- H02M7/4807—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 having a high frequency intermediate AC stage
-
- 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
- H02M7/02—Conversion of ac power input into dc power output without possibility of reversal
- H02M7/04—Conversion of ac power input into dc power output without possibility of reversal by static converters
- H02M7/12—Conversion of ac power input into dc power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
- H02M7/21—Conversion of ac power input into dc 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
- H02M7/217—Conversion of ac power input into dc 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
- H02M7/219—Conversion of ac power input into dc 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 in a bridge configuration
- H02M7/2195—Conversion of ac power input into dc 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 in a bridge configuration the switches being synchronously commutated at the same frequency of the AC input voltage
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Inverter Devices (AREA)
Abstract
The invention discloses a high-frequency isolated grid-connected inverter circuit. The circuit comprises an isolated high-frequency modulating unit (1), a cycle inverter unit (2) used for slitting the positive and negative half cycles of alternating current and an inductance-capacitance filtering unit (3), wherein the isolated high-frequency modulating unit (1) is connected with the cycle inverter unit (2) and the inductance-capacitance filtering unit (3) in turn; and the isolated high-frequency modulating unit (1) contains an modulating unit, a high-frequency transformer and an diode rectifying unit which are connected in turn, and the modulating unit performs sinusoidal modulation to the input alternating current to ensure the alternating current to generate high frequency SPWM based on sine. The high-frequency isolated grid-connected inverter circuit has simple structure, stable performance, high overall conversion efficiency, high utilization rate of the high-frequency isolated transformer, less switching loss, small volume and light weight.
Description
Technical field
The present invention relates to a kind of high-frequency isolated grid-connected inverter circuit.
Background technology
The combining inverter that has transformer isolation can be accomplished the input and output electrical isolation, can better solve electromagnetic interference problem and electrical safety problem.
Under some occasion, need use the inverter of isolated form, as domestic consumer's generator unit of Back-contact cell panel and thin-film solar cell panel is installed, consider the surperficial polarization phenomena of Back-contact cell panel, need cell panel to be negative polarity over the ground, the blocking-up leakage current takes place, and improves generating efficiency.And for hull cell, for the performance that do not influence cell panel itself (as corrosion etc.), need cell panel to be positive polarity over the ground, at this time need cell panel just or negativing ending grounding, with respect to not with the inverter of isolating transformer, the inverter that has isolating transformer then can be accomplished this point very easily.
In addition, the solar power generation inverter that some country sells based on security consideration regulation this country need increase the electrical isolation link, to guarantee the front and back level electrical isolation of solar power generation, further reduces the electric shock casualty accident that meets accident.
General isolated form inverter is divided into two kinds: low frequency isolation and high-frequency isolation.The low frequency isolation inverter needs the low-frequency transformer of bulkiness to isolate, and volume is big, Heavy Weight, and the cost height is installed extremely inconvenient.Another is the high-frequency isolation inverter, and general high-frequency isolation is at first to carry out the direct current high-frequency isolation, carries out high-frequency inversion after the rectification again.It is big that this kind circuit has switching loss, and part switching tube stress considers to require high defective.
Summary of the invention
The objective of the invention is: a kind of high-frequency isolated grid-connected inverter circuit is provided, its simple in structure, stable performance, whole conversion efficiency height, high-frequency isolation transformer utilance height, switching loss are few, and volume is little, in light weight.
The technical scheme of circuit of the present invention is: a kind of high-frequency isolated grid-connected inverter circuit, it comprises is with the high frequency modulated unit that isolates, the cycle inverter unit of being responsible for cutting the alternating current positive and negative half period, and the high frequency modulated unit that described band is isolated connects the cycle inverter unit.
Below technique scheme is further explained:
Further, the high frequency modulated unit of described band isolation comprises that successively the direct current of importing is carried out Sine Modulated makes high frequency SPWM modulating unit, high frequency transformer TX1, the diode rectification unit of its generation based on the high-frequency impulse of sine.
Further, described high-frequency isolated grid-connected inverter circuit also includes the inductance capacitor filtering unit, and the cycle inverter unit connects the inductance capacitor filtering unit.
Further, described high frequency SPWM modulating unit can be selected from half-bridge circuit, full-bridge circuit or push-pull circuit.
Further, described inductance capacitor filtering unit is positioned at cycle inverter unit output, and described cycle inverter unit connects the inductance capacitor filtering unit.
Described inductance capacitor filtering unit comprises at least one inductance, can be an inductance, also can be two inductance or a plurality of inductance.Inductance can be connected on any one electrode of cycle inverter unit output, also can be that two inductance (or a plurality of inductance) are connected on respectively on the different electrodes.
Be parallel with filter capacitor between two electrodes after filter inductance.That is: electric capacity is positioned at the output of inductance, and is parallel to two interpolars of electrical network.
Because of the power-generation inversion device is generally combining inverter, may have higher surge generations such as (surges) in civil power Vac side, take the inductance capacitor filtering unit to be positioned at the design of cycle inverter unit output, because the back level has inductance, electric capacity can significantly reduce the high pressure of moment or the infringement probability of big electric current as stopping.Simultaneously, shorter because of the path of inductance afterflow of the present invention, the element of process is fewer, so loss is also smaller, has higher improved efficiency space.
The preferred technical scheme of the present invention: described high frequency SPWM modulating unit comprises the full-bridge circuit that is made of switching tube S1, switching tube S2, switching tube S3, switching tube S4; Described diode rectification unit comprises the full-wave rectification bridge-type diode that is made of diode D1, diode D2, diode D3, diode D4; Described cycle inverter unit comprises the full-bridge circuit that is made of switching tube S5, switching tube S6, switching tube S7, switching tube S8; The inductance capacitor filtering unit is an inductance L 1, capacitor C 1; When described high frequency SPWM modulating unit was worked, the former avris voltage of transformer TX1 was to being divided into pulse one, pulse two; The current circuit of time spent is made in pulse one, primary current flows back to negative terminal by switching tube S1, transformer TX1, switching tube S4, energy is delivered to secondary by transformer TX1 simultaneously, secondary is then by diode D1, switching tube S5, alternating current output Vac, inductance L 1, switching tube S8, diode D4 flow back to the negative terminal of transformer, and energy is by the DC utmost point supply backward of prime at this moment; After pulse one finishes, former limit transformer TX1 terminal voltage is zero, secondary is by switching tube S5, alternating current output Vac, inductance L 1, the afterflow of switching tube S7 parallel diode, an other continuous current circuit is switching tube S8, switching tube S6 parallel diode, alternating current output Vac, inductance L 1 afterflow; Current circuit when pulse two occurs, primary current flows back to negative terminal by switching tube S3, transformer TX1, switching tube S2, energy is delivered to secondary by transformer TX1 simultaneously, secondary is then by diode D3, switching tube S5, alternating current output Vac, inductance L 1, switching tube S8, diode D2 flow back to the negative terminal of transformer, and energy is by the DC utmost point supply backward of prime at this moment; After pulse two finishes, former limit transformer TX1 terminal voltage is zero, secondary is by switching tube S5, alternating current output Vac, inductance L 1, the afterflow of switching tube S7 parallel diode, an other continuous current circuit is switching tube S8, switching tube S6 parallel diode, alternating current output Vac, inductance L 1 afterflow.
Traditional high-frequency isolation mainly is to finish the isolation of DC-to-DC, and the present invention has then finished the SPWM modulation of inverter at the high-frequency isolation end, make the voltage of output directly can become sine wave through behind the inductor filter.
The core of the preferred embodiment of the present invention is: (modulation system is the Sine Modulated mode at first the direct current of importing to be carried out Sine Modulated, implement diagram as shown in Figure 2), make it produce high-frequency impulse, this high-frequency impulse after extra pulse is to parallel circuit symmetry be applied to the former avris of transformer two ends (implementing legend as shown in Figure 4).The energy of dc terminal is delivered to primary side by high frequency modulated from the former avris of transformer like this.Primary side is passed through diode rectification, cycle inverter and inductor filter again, produces sinusoidal current output.
Advantage of the present invention is:
1, high-frequency isolated grid-connected inverter circuit of the present invention, whole conversion efficiency height, have concurrently simultaneously in light weight, volume is little, many-sided advantage such as stable performance.Four switching tubes of its former avris SPWM modulation can adopt soft switch technique, reduce switching loss.By control circuit, transformer will be operated in one, three quadrants, improve the utilance of transformer greatly.And for primary side, the rectifier bridge diode is in no-voltage and turn-offs, significantly reduced the switching loss of diode, the cycle inverter switching frequency of primary side is a mains frequency, so switching loss is also very little, continuous current circuit produces at peripheral inverter end, and two paths are arranged, and can reduce conduction loss and diode switch loss.
2, high-frequency isolated grid-connected inverter circuit of the present invention, take the inductance capacitor filtering unit to be positioned at the design at cycle inverter unit rear portion, because the back level has inductance, electric capacity can significantly reduce the high pressure of the moment in the electrical network or the infringement probability of big electric current as stopping.Simultaneously, shorter because of the path of inductance afterflow of the present invention, the element of process is fewer, so loss is also smaller, has higher improved efficiency space.
Description of drawings
The invention will be further described below in conjunction with drawings and Examples:
Fig. 1 is a structural representation of the present invention;
The high frequency modulated partial function schematic diagram that Fig. 2 isolates for band;
Fig. 3 is the structural representation of one embodiment of the present of invention;
Fig. 4 be embodiment illustrated in fig. 3 in, SPWM modulation down, the pulse voltage waveform figure on the former limit of transformer TX1;
Fig. 5 makes the current circuit schematic diagram of time spent for the pulse one of Fig. 4;
Fig. 6 is after the pulse one of Fig. 4 finishes, the continuous current circuit schematic diagram of back utmost point cycle inverter;
Fig. 7 makes the current circuit schematic diagram of time spent for the pulse two of Fig. 4;
Fig. 8 is after the pulse two of Fig. 4 finishes, the continuous current circuit figure of circuit;
Fig. 9 be embodiment illustrated in fig. 3 in, in the voltage cycle, the voltage waveform behind the diode rectifier bridge;
Figure 10 is the low frequency drive signal schematic diagram (switching tube S5, switching tube S8) of cycle inverter;
Figure 11 is the low frequency drive signal schematic diagram (switching tube S6, switching tube S7) of cycle inverter;
After Figure 12 is back level process inductor filter, the output current of circuit and voltage oscillogram.
Wherein: the high frequency modulated unit that 1 band is isolated; 2 cycle inverter units; 3 inductance capacitor filtering unit; 11 pulses one; 12 pulses two; 15 sinusoidal voltages; 16 sinusoidal currents; 21 control units; 22 low frequency IGBT driver elements; 23 switching tube driving control unit; 24 SPWM modulation.
Embodiment
Embodiment: as Fig. 1, shown in Figure 3, a kind of high-frequency isolated grid-connected inverter circuit, it comprises high frequency modulated unit 1, cycle inverter unit 2, the inductance capacitor filtering unit 3 that band is isolated.The high frequency modulated unit 1 that band is isolated connects cycle inverter unit 2, inductance capacitor filtering unit 3 successively.
The high frequency modulated unit 1 that band is isolated comprises that successively the direct current of importing is carried out Sine Modulated makes high frequency SPWM modulating unit, high frequency transformer TX1, the diode rectification unit of its generation based on the high-frequency impulse of sine.The cycle inverter unit is responsible for cutting the alternating current positive and negative half period.Inductance capacitor filtering unit 3 can be selected an inductance for use, also can select for use two or more inductance to be connected in a utmost point or two utmost points of civil power.
High frequency SPWM modulating unit can be selected from half-bridge circuit, full-bridge circuit or push-pull circuit.Be example with the full-bridge circuit in the present embodiment.
High frequency SPWM modulating unit comprises the full-bridge circuit that is made of switching tube S1, switching tube S2, switching tube S3, switching tube S4.The control of switching tube S1, switching tube S2, switching tube S3, switching tube S4 can be adopted phase shift system control, or adopts common full-bridge paired pulses control mode.
The diode rectification unit comprises the full-wave rectification bridge-type diode that is made of diode D1, diode D2, diode D3, diode D4.
The cycle inverter unit comprises the full-bridge circuit that is made of switching tube S5, switching tube S6, switching tube S7, switching tube S8.
The inductance capacitor filtering unit comprises at least one inductance, can be an inductance, also can be two inductance or a plurality of inductance.Inductance can be connected on any one electrode of cycle inverter unit output, also can be that two inductance (or a plurality of inductance) are connected on respectively on the different electrodes.Only adopt an inductance L 1 as example in the present embodiment.
Inductance capacitor filtering unit 3 also includes capacitor C 1, and capacitor C 1 is positioned at the output of inductance L 1.
The high-frequency isolated grid-connected inverter circuit of present embodiment takes the inductance capacitor filtering unit to be positioned at the design of cycle inverter unit output, because the back level has inductance L 1, capacitor C 1 can significantly reduce the high pressure of moment or the infringement probability of big electric current as stopping.
The situation following explanation of present embodiment when work:
As shown in Figure 4, under the SPWM modulation, the pulse voltage waveform figure on the former limit of transformer TX1.
As shown in Figure 5, the current circuit of time spent is made in civil power positive half period pulse one, primary current flows back to negative terminal by switching tube S3, transformer TX1, switching tube S2, energy is delivered to secondary by transformer TX1 simultaneously, then by diode D1, switching tube S5, alternating current output Vac, inductance L 1, switching tube S8, diode D4 flow back to the negative terminal of transformer to secondary.At this moment, energy is by the DC utmost point supply backward of prime.
As shown in Figure 6, after civil power positive half period pulse one finishes, former limit transformer TX1 terminal voltage is zero, secondary is by switching tube S5, alternating current output Vac, inductance L 1, the afterflow of switching tube S7 parallel diode, an other continuous current circuit is switching tube S8, switching tube S6 parallel diode, alternating current output Vac, inductance L 1 afterflow.
As shown in Figure 7, current circuit when civil power positive half period pulse two occurs, primary current flows back to negative terminal by switching tube S1, transformer TX1, switching tube S4, energy is delivered to secondary by transformer TX1 simultaneously, then by diode D3, switching tube S5, alternating current output Vac, inductance L 1, switching tube S8, diode D2 flow back to the negative terminal of transformer to secondary.At this moment, energy is by the DC utmost point supply backward of prime.
As shown in Figure 8, after civil power positive half period pulse two finishes, former limit transformer TX1 terminal voltage is zero, secondary is by switching tube S5, alternating current output Vac, inductance L 1, the afterflow of switching tube S7 parallel diode, an other continuous current circuit is switching tube S8, switching tube S6 parallel diode, alternating current output Vac, inductance L 1 afterflow.
When the civil power negative half-cycle, the former edge-impulse one of transformer is identical with the type of action of pulse two, and negative half period cycle inverter is opened switching tube S7 and switching tube S6.(positive half cycle is for opening switching tube S5 and switching tube S8)
Fig. 9 be embodiment illustrated in fig. 3 in, in the voltage cycle, the voltage waveform of diode rectifier bridge back.Figure 10 is the low frequency drive signal schematic diagram (switching tube S5, switching tube S8) of cycle inverter, and Figure 11 is the low frequency drive signal schematic diagram (switching tube S6, switching tube S7) of cycle inverter.After Figure 12 is back level process inductor filter, the output current of circuit and voltage oscillogram.
Finish subsequent flows path schematic diagram as can be known by above pulse one (perhaps pulse two), the path of the inductance afterflow of present embodiment is shorter, and the element of process is fewer, so loss is also smaller, has higher improved efficiency space.
Should be pointed out that for the present invention also to have the embodiment of multiple conversion and remodeling, be not limited to the specific embodiment of above-mentioned execution mode through proving absolutely.The foregoing description is as just explanation of the present invention, rather than restriction.In a word, protection scope of the present invention should comprise those conspicuous to those skilled in the art conversion or substitute and remodeling.
Claims (10)
1. high-frequency isolated grid-connected inverter circuit, it is characterized in that: it comprises is with the high frequency modulated unit (1) that isolates, the cycle inverter unit (2) of being responsible for cutting the alternating current positive and negative half period, and the high frequency modulated unit (1) that described band is isolated connects cycle inverter unit (2).
2. high-frequency isolated grid-connected inverter circuit according to claim 1 is characterized in that: the high frequency modulated unit (1) that described band is isolated comprises that the direct current to input that connects successively carries out Sine Modulated and makes high frequency SPWM modulating unit, high frequency transformer, the diode rectification unit of its generation based on the high-frequency impulse of sine.
3. high-frequency isolated grid-connected inverter circuit according to claim 2, it is characterized in that: described high-frequency isolated grid-connected inverter circuit also includes inductance capacitor filtering unit (3), described inductance capacitor filtering unit (3) is positioned at cycle inverter unit (2) output, and described cycle inverter unit (2) connects inductance capacitor filtering unit (3).
4. high-frequency isolated grid-connected inverter circuit according to claim 3 is characterized in that: described inductance capacitor filtering unit (3) comprises at least one inductance, and inductance can be connected on any one electrode of cycle inverter unit (2) output; Inductance capacitor filtering unit (3) also includes electric capacity, and electric capacity is positioned at the output of described inductance, and is parallel to two interpolars of electrical network.
5. high-frequency isolated grid-connected inverter circuit according to claim 2 is characterized in that: described high frequency SPWM modulating unit can be selected from half-bridge circuit, full-bridge circuit or push-pull circuit.
6. high-frequency isolated grid-connected inverter circuit according to claim 2 is characterized in that: described high frequency SPWM modulating unit comprises the full-bridge circuit that is made of switching tube S1, switching tube S2, switching tube S3, switching tube S4.
7. high-frequency isolated grid-connected inverter circuit according to claim 6, it is characterized in that: the drive part of described switching tube S1, switching tube S2, switching tube S3, switching tube S4 can adopt finite both modulation dipulse to branch, or adopts direct dipulse to a minute driving diagonal angle brachium pontis switching tube.
8. high-frequency isolated grid-connected inverter circuit according to claim 2 is characterized in that: described diode rectification unit comprises the full-wave rectification bridge-type diode that is made of diode D1, diode D2, diode D3, diode D4.
9. high-frequency isolated grid-connected inverter circuit according to claim 1 is characterized in that: described cycle inverter unit (2) comprises the full-bridge circuit that is made of switching tube S5, switching tube S6, switching tube S7, switching tube S8.
10. high-frequency isolated grid-connected inverter circuit according to claim 3 is characterized in that: described high frequency SPWM modulating unit comprises the full-bridge circuit that is made of switching tube S1, switching tube S2, switching tube S3, switching tube S4; Described diode rectification unit comprises the full-wave rectification bridge-type diode that is made of diode D1, diode D2, diode D3, diode D4; Described cycle inverter unit (2) comprises the full-bridge circuit that is made of switching tube S5, switching tube S6, switching tube S7, switching tube S8; Inductance capacitor filtering unit (3) is an inductance L 1; When described high frequency SPWM modulating unit was worked, the former avris voltage of transformer TX1 was divided into pulse one, pulse two; The current circuit of time spent is made in pulse one, primary current flows back to negative terminal by switching tube S1, transformer TX1, switching tube S4, energy is delivered to secondary by transformer TX1 simultaneously, secondary is then by diode D1, switching tube S5, alternating current output Vac, inductance L 1, switching tube S8, diode D4 flow back to the negative terminal of transformer, and energy is by the DC utmost point supply backward of prime at this moment; After pulse one finishes, former limit transformer TX1 terminal voltage is zero, secondary is by switching tube S5, alternating current output Vac, inductance L 1, the afterflow of switching tube S7 parallel diode, an other continuous current circuit is switching tube S8, switching tube S6 parallel diode, alternating current output Vac, inductance L 1 afterflow; Current circuit when pulse two occurs, primary current flows back to negative terminal by switching tube S3, transformer TX1, switching tube S2, energy is delivered to secondary by transformer TX1 simultaneously, secondary is then by diode D3, switching tube S5, alternating current output Vac, inductance L 1, switching tube S8, diode D2 flow back to the negative terminal of transformer, and energy is by the DC utmost point supply backward of prime at this moment; After pulse two finishes, former limit transformer TX1 terminal voltage is zero, secondary is by switching tube S5, alternating current output Vac, inductance L 1, the afterflow of switching tube S7 parallel diode, an other continuous current circuit is switching tube S8, switching tube S6 parallel diode, alternating current output Vac, inductance L 1 afterflow.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010102682670A CN101917134A (en) | 2010-08-31 | 2010-08-31 | High-frequency isolated grid-connected inverter circuit |
| PCT/CN2011/001472 WO2012027962A1 (en) | 2010-08-31 | 2011-08-31 | High-frequency isolation grid-connected inverter circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010102682670A CN101917134A (en) | 2010-08-31 | 2010-08-31 | High-frequency isolated grid-connected inverter circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101917134A true CN101917134A (en) | 2010-12-15 |
Family
ID=43324553
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010102682670A Pending CN101917134A (en) | 2010-08-31 | 2010-08-31 | High-frequency isolated grid-connected inverter circuit |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN101917134A (en) |
| WO (1) | WO2012027962A1 (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102255331A (en) * | 2011-06-18 | 2011-11-23 | 江苏艾索新能源股份有限公司 | Transformer-free unilateral inductor grid-connected inverter circuit |
| WO2012027962A1 (en) * | 2010-08-31 | 2012-03-08 | 江苏艾索新能源股份有限公司 | High-frequency isolation grid-connected inverter circuit |
| WO2013120363A1 (en) * | 2012-02-15 | 2013-08-22 | 华为技术有限公司 | Inverter circuit and control method therefor |
| CN110086351A (en) * | 2019-06-03 | 2019-08-02 | 易事特智能化系统集成有限公司 | Dynamic power DC converter |
| CN115629283A (en) * | 2022-08-18 | 2023-01-20 | 北京芯可鉴科技有限公司 | Method and device for evaluating component in circuit and circuit |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102593869B (en) * | 2012-03-15 | 2014-10-29 | 东北大学 | H full-bridge conversion type micro-inverter grid connecting device |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10108473A (en) * | 1991-11-20 | 1998-04-24 | Tec Corp | Power supply apparatus |
| CN201766518U (en) * | 2010-08-31 | 2011-03-16 | 江苏艾索新能源股份有限公司 | High frequency isolation parallel connection invert circuit |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201374647Y (en) * | 2009-03-20 | 2009-12-30 | 上海航锐电源科技有限公司 | Forestage DC/DC converter of a fuel battery grid-connected inverter |
| CN101917134A (en) * | 2010-08-31 | 2010-12-15 | 江苏艾索新能源股份有限公司 | High-frequency isolated grid-connected inverter circuit |
-
2010
- 2010-08-31 CN CN2010102682670A patent/CN101917134A/en active Pending
-
2011
- 2011-08-31 WO PCT/CN2011/001472 patent/WO2012027962A1/en active Application Filing
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10108473A (en) * | 1991-11-20 | 1998-04-24 | Tec Corp | Power supply apparatus |
| CN201766518U (en) * | 2010-08-31 | 2011-03-16 | 江苏艾索新能源股份有限公司 | High frequency isolation parallel connection invert circuit |
Non-Patent Citations (1)
| Title |
|---|
| 韩新建等: "《光伏并网发电系统的研究与设计》", 15 April 2009, article "高频变压器隔离型", pages: 7 - 11 * |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2012027962A1 (en) * | 2010-08-31 | 2012-03-08 | 江苏艾索新能源股份有限公司 | High-frequency isolation grid-connected inverter circuit |
| CN102255331A (en) * | 2011-06-18 | 2011-11-23 | 江苏艾索新能源股份有限公司 | Transformer-free unilateral inductor grid-connected inverter circuit |
| WO2013120363A1 (en) * | 2012-02-15 | 2013-08-22 | 华为技术有限公司 | Inverter circuit and control method therefor |
| CN110086351A (en) * | 2019-06-03 | 2019-08-02 | 易事特智能化系统集成有限公司 | Dynamic power DC converter |
| CN115629283A (en) * | 2022-08-18 | 2023-01-20 | 北京芯可鉴科技有限公司 | Method and device for evaluating component in circuit and circuit |
| CN115629283B (en) * | 2022-08-18 | 2024-05-10 | 北京芯可鉴科技有限公司 | Method and device for evaluating component parts in circuit and circuit |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2012027962A1 (en) | 2012-03-08 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Gu et al. | High reliability and efficiency single-phase transformerless inverter for grid-connected photovoltaic systems | |
| CN101917133B (en) | Five-electrical level inverter | |
| US8111528B2 (en) | DC to AC inverter | |
| CN103078522B (en) | A kind of control method of capacitor charging AC-DC series resonance matrix converter control device | |
| CN106505872B (en) | A kind of high-frequency chain inverter | |
| CN101917134A (en) | High-frequency isolated grid-connected inverter circuit | |
| CN102361408A (en) | Non-isolated photovoltaic grid-connected inverter and switching control time sequence thereof | |
| CN205647288U (en) | Non - isolated form photovoltaic grid -connected inverter | |
| CN103107720A (en) | Three-inductance and double-Buck inverter | |
| CN102255544A (en) | DC (direct current)/AC (alternating current) inverter circuit | |
| CN104410310A (en) | Neutral point clamped H-bridge photovoltaic inverter and method for inhibiting common mode leakage current | |
| CN105703652A (en) | Control method of high-frequency isolation DC/AC inverter circuit and high-frequency isolation DC/AC inverter circuit | |
| Khan et al. | A high efficiency transformerless PV grid-connected inverter with leakage current suppression | |
| Fang et al. | Study on bidirectional-charger for electric vehicle applied to power dispatching in smart grid | |
| CN103956927A (en) | Voltage-active-clamping non-transformer-type single-phase photovoltaic inverter | |
| Bavitra et al. | The high efficiency renewable PV inverter topology | |
| CN111293914B (en) | High-performance neutral point clamped three-level non-isolated inverter and switch control time sequence thereof | |
| CN202495887U (en) | Inverter used in photovoltaic power generation | |
| CN104158427B (en) | Single-phase transless isolated form Z source photovoltaic combining inverter and modulator approach | |
| CN106452141B (en) | A kind of three-phase dual input inverter of no bridge arm direct pass risk | |
| CN201766518U (en) | High frequency isolation parallel connection invert circuit | |
| Duan et al. | A novel high-efficiency inverter for stand-alone and grid-connected systems | |
| CN104065293A (en) | Transformer-free type single-phase photovoltaic inverter with mixed voltage clamping | |
| CN202840997U (en) | Mini-type photovoltaic inverter with composite three-level structure and based on DSP | |
| CN205453533U (en) | SHEPWM control circuit , two three level SHEPWM dc -to -ac converter parallel system on T type |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C53 | Correction of patent of invention or patent application | ||
| CB02 | Change of applicant information |
Address after: 215011 Suzhou province high tech Zone Xiangyang Road, No. 9, building 198, Jiangsu Applicant after: Jiangsu Zeversolar New Energy Co.,Ltd. Address before: 215011 Suzhou province high tech Zone Xiangyang Road, No. 9, building 198, Jiangsu Applicant before: JIANGSU EVER-SOLAR NEW ENERGY Co.,Ltd. |
|
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| ASS | Succession or assignment of patent right |
Owner name: SMA NEW ENERGY TECHNOLOGY (SHANGHAI) AG Free format text: FORMER OWNER: JIANGSU ZEVERSOLAR NEW ENERGY CO., LTD. Effective date: 20150521 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| C53 | Correction of patent of invention or patent application | ||
| CB02 | Change of applicant information |
Address after: 215011 Suzhou province high tech Zone Xiangyang Road, No. 9, building 198, Jiangsu Applicant after: Jiangsu Zhaofu Aisuo New Energy Co.,Ltd. Address before: 215011 Suzhou province high tech Zone Xiangyang Road, No. 9, building 198, Jiangsu Applicant before: Jiangsu Zeversolar New Energy Co.,Ltd. |
|
| TA01 | Transfer of patent application right |
Effective date of registration: 20150521 Address after: 200000, 7, 701, 707B building, Zhongjian building, No. 1568 Century Avenue, Shanghai, Pudong New Area Applicant after: SMA NEW ENERGY TECHNOLOGY (SHANGHAI) CO.,LTD. Address before: 215011 Suzhou province high tech Zone Xiangyang Road, No. 9, building 198, Jiangsu Applicant before: Jiangsu Zhaofu Aisuo New Energy Co.,Ltd. |
|
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20101215 |