CN116885965A - Double half-wave high-frequency chain type micro inverter - Google Patents
Double half-wave high-frequency chain type micro inverter Download PDFInfo
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- CN116885965A CN116885965A CN202310465551.4A CN202310465551A CN116885965A CN 116885965 A CN116885965 A CN 116885965A CN 202310465551 A CN202310465551 A CN 202310465551A CN 116885965 A CN116885965 A CN 116885965A
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- 238000004804 winding Methods 0.000 claims description 66
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- 101150058668 tra2 gene Proteins 0.000 description 6
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- 238000010248 power generation Methods 0.000 description 2
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Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M7/00—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output
- H02M7/42—Conversion of dc power input into ac power output without possibility of reversal
- H02M7/44—Conversion of dc power input into ac power output without possibility of reversal by static converters
- H02M7/48—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
- H02M7/53—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal
- H02M7/537—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only, e.g. single switched pulse inverters
- H02M7/5387—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only, e.g. single switched pulse inverters in a bridge configuration
- H02M7/53871—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only, e.g. single switched pulse inverters in a bridge configuration with automatic control of output voltage or current
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J3/00—Circuit arrangements for ac mains or ac distribution networks
- H02J3/38—Arrangements for parallely feeding a single network by two or more generators, converters or transformers
- H02J3/381—Dispersed generators
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J3/00—Circuit arrangements for ac mains or ac distribution networks
- H02J3/38—Arrangements for parallely feeding a single network by two or more generators, converters or transformers
- H02J3/388—Islanding, i.e. disconnection of local power supply from the network
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M1/00—Details of apparatus for conversion
- H02M1/08—Circuits specially adapted for the generation of control voltages for semiconductor devices incorporated in static converters
- H02M1/088—Circuits specially adapted for the generation of control voltages for semiconductor devices incorporated in static converters for the simultaneous control of series or parallel connected semiconductor devices
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M7/00—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output
- H02M7/42—Conversion of dc power input into ac power output without possibility of reversal
- H02M7/44—Conversion of dc power input into ac power output without possibility of reversal by static converters
- H02M7/48—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
- H02M7/53—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal
- H02M7/537—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only, e.g. single switched pulse inverters
- H02M7/538—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only, e.g. single switched pulse inverters in a push-pull configuration
- H02M7/53803—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only, e.g. single switched pulse inverters in a push-pull configuration with automatic control of output voltage or current
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J2300/00—Systems for supplying or distributing electric power characterised by decentralized, dispersed, or local generation
- H02J2300/20—The dispersed energy generation being of renewable origin
- H02J2300/22—The renewable source being solar energy
- H02J2300/24—The renewable source being solar energy of photovoltaic origin
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Inverter Devices (AREA)
Abstract
The application aims to solve the technical problems that: in the conventional half-wave type high-frequency chain-type inverter, only the energy of the positive half cycle of the high-frequency alternating-current square wave generated by the primary side is transmitted to the output side. The technical scheme of the application is to provide a double half-wave high-frequency chained micro inverter, wherein the circuit topology comprises a primary side conversion topology, and a high-frequency alternating current square wave generated by the primary side conversion topology is loaded on the primary side of a transformer. Compared with the traditional half-wave high-frequency chain-type inverter, the application has higher voltage utilization rate; the circuit topology provided by the application can be simultaneously suitable for grid-connected and off-grid applications; the application has a split-phase output structure, and the two-phase output voltage can realize automatic equalization.
Description
Technical Field
The application relates to a high-frequency chain type micro inverter, belongs to the field of photovoltaic power generation, and particularly relates to a photovoltaic power generation system formed by applying the micro inverter.
Background
The circuit topology of the traditional half-wave high-frequency chained inverter is shown in fig. 1, and the circuit topology comprises a high-frequency transformer, wherein the primary side of the high-frequency transformer is connected with a full-bridge conversion topology circuit, and the secondary side of the high-frequency transformer is connected with a rectifying circuit and then output through an LC filter circuit. In the half-wave type high-frequency chain-type inverter shown in fig. 1, only the energy of the positive half cycle of the high-frequency alternating-current square wave generated at the primary side is transferred to the output side, thereby reducing the voltage utilization rate.
Disclosure of Invention
The application aims to solve the technical problems that: in the conventional half-wave type high-frequency chain-type inverter, only the energy of the positive half cycle of the high-frequency alternating-current square wave generated by the primary side is transmitted to the output side.
In order to solve the technical problems, the technical scheme of the application provides a double-half-wave high-frequency chained micro-inverter, wherein the circuit topology of the double-half-wave high-frequency chained micro-inverter comprises a primary side conversion topology, and a signal waveform generated by the primary side conversion topology is loaded on a primary side of a transformer;
or two independent transformers are arranged, the signal waveforms generated by the primary side conversion topology are loaded on the primary sides of the two transformers at the same time, the secondary sides of the two transformers are respectively connected with a half-wave type frequency converter, and the energy of the positive half cycle and the negative half cycle of the primary side signal waveforms is transmitted to the output side through the two half-wave type frequency converters.
Preferably, two of said half-wave mode cycloconverters can be loaded separately or together.
Preferably, the two half-wave type frequency converters respectively transmit the energy of the positive half cycle and the negative half cycle of the primary side high-frequency square wave to the output side through respective filter circuits, and the two filter circuits can be respectively or jointly loaded.
Preferably, when one transformer is used, the number of turns of both said windings on the secondary side of the transformer is the same.
Preferably, when a transformer is used, two windings on the secondary side of the transformer are defined as winding one and winding two, respectively, then:
during the positive half cycle of the grid voltage: in the positive half cycle of the switching cycle, when the primary voltage is positive, energy is output by the winding I, and when the primary voltage is zero, the secondary current follows a loop formed by the two half-wave type frequency converters and the winding I; in the negative half cycle of the switching cycle, when the primary voltage is negative, energy is output by the winding II, and when the primary voltage is zero, the secondary current follows a loop formed by the two half-wave type frequency converters and the winding II to carry out follow current;
at the negative half cycle of the grid voltage: in the positive half cycle of the switching cycle, when the primary voltage is positive, energy is output by the winding II, and when the primary voltage is zero, the secondary current follows a loop formed by the two half-wave type frequency converters and the winding II to carry out follow current; in the negative half of the switching cycle, when the primary voltage is negative, energy is output by the winding one, and when the primary voltage is zero, the secondary current freewheels along the loop formed by the two half-wave type cycloconverters and the winding one.
Preferably, the output of the first winding is in short circuit with the output of one end of the second winding, and the output of the other end is the same name with one pin of the primary side.
Preferably, the half-wave type frequency converter connected with the winding I comprises switching tubes Q1, Q2, Q3 and Q4, after the homonymous ends of the winding I are sequentially connected with the switching tubes Q1, Q2, Q3 and Q4, the switching tube Q4 is connected with the short-circuit end of the winding I again, and the two ends of the switching tubes Q3 and Q4 connected in series are the output of the half-wave type frequency converter;
the half-wave type frequency converter connected with the second winding comprises switching tubes Q5, Q6, Q7 and Q8, the same-name ends of the second winding are sequentially connected with the switching tubes Q5, Q6, Q7 and Q8, the switching tube Q8 is connected with the short-circuit end of the second winding, and the two ends of the switching tubes Q7 and Q8 connected in series are the output of the half-wave type frequency converter.
Preferably, in the positive half cycle of the grid voltage, the switching tubes Q1 and Q6 are kept normally on, and the switching tubes Q2 and Q5 are kept normally off; in the positive half cycle of the switching period, an off command is sent to the switching tubes Q3 and Q4, and an on command is sent to the switching tubes Q7 and Q8; in the negative half cycle of the switching period, an off command is sent to the switching tubes Q7 and Q8, and an on command is sent to the switching tubes Q3 and Q4;
in the negative half cycle of the power grid voltage, the switching tubes Q1 and Q6 are kept normally closed, and the switching tubes Q2 and Q5 are kept normally open; in the positive half cycle of the switching period, an off command is sent to the switching tubes Q7 and Q8, and an on command is sent to the switching tubes Q3 and Q4; in the negative half cycle of the switching cycle, an off command is sent to the switching transistors Q3 and Q4, and an on command is sent to the switching transistors Q7 and Q8.
Preferably, during the positive half cycle of the grid voltage: in the positive half cycle of the switching cycle, when the primary side voltage is zero, the secondary side current freewheels along the anti-parallel diode of the switching tube Q1 and the switching tube Q2, the switching tube Q8, the switching tube Q7 and the winding I; in the negative half cycle of the switching cycle, when the primary side voltage is zero, the secondary side current freewheels along the anti-parallel diode and the winding II of the switching tube Q4, the switching tube Q3, the switching tube Q6 and the switching tube Q5;
at the negative half cycle of the grid voltage: in the positive half cycle of the switching cycle, when the primary side voltage is zero, the secondary side current freewheels along the anti-parallel diode, the switching tube Q3, the switching tube Q4 and the winding II of the switching tube Q5 and the switching tube Q6; in the negative half of the switching cycle, when the primary voltage is zero, the secondary current freewheels along the anti-parallel diodes of the switching tube Q7, the switching tube Q8, the switching tube Q2 and the switching tube Q1 and the winding one.
Preferably, the primary side conversion topology is a full bridge conversion topology circuit, a half bridge conversion topology circuit or a push-pull topology circuit.
Compared with the prior half-wave high-frequency chain-type inverter, the application has the advantages that:
1. compared with the traditional half-wave high-frequency chain-type inverter, the application has higher voltage utilization rate;
2. the circuit topology provided by the application can be simultaneously suitable for grid-connected and off-grid applications;
3. the application has a split-phase output structure, and the two-phase output voltage can realize automatic equalization.
Drawings
Fig. 1 illustrates a circuit topology of a conventional half-wave high-frequency chain-link inverter;
fig. 2 illustrates a circuit topology of a double half-wave high-frequency chain-type micro-inverter of a first form in accordance with the first embodiment of the present application;
FIG. 3 illustrates the circuit topology of FIG. 2 in a grid-tie state;
FIG. 4 illustrates the circuit topology of FIG. 2 in an off-grid, split-phase, on-load state;
fig. 5 illustrates a circuit topology of a double half-wave high-frequency chain-type micro-inverter of a second form in accordance with the first embodiment of the present application;
fig. 6 illustrates a circuit topology of a double half-wave high frequency chain-type micro-inverter in a second embodiment of the present application.
Detailed Description
The application will be further illustrated with reference to specific examples. It is to be understood that these examples are illustrative of the present application and are not intended to limit the scope of the present application. Furthermore, it should be understood that various changes and modifications can be made by one skilled in the art after reading the teachings of the present application, and such equivalents are intended to fall within the scope of the application as defined in the appended claims.
Example 1
As shown in fig. 2, the circuit topology of the double half-wave high-frequency chained micro inverter disclosed in the embodiment is a single-stage inversion topology, the input of the battery board is connected into an H-type full-bridge conversion topology after passing through a capacitor C3, and the output is connected with a high-frequency transformer Tra1 for boosting. The secondary side of the high-frequency transformer Tra1 adopts 2 winding outputs, which are respectively defined as a winding S1 and a winding S2, one end outputs of the 2 windings are short-circuited together, and the other end is the same-name end with the 1 pin of the primary side. Each winding output is connected with a group of half-wave conversion circuit topologies respectively, and then connected with a power grid or a load respectively after LC filtering. In this embodiment, the number of turns of the two windings on the secondary side is the same, and the secondary side output of the high-frequency transformer Tra1 adopts a form of combining two half-wave type frequency converters, so that the energy of positive and negative half cycles of the primary side high-frequency square wave (except the high-frequency square wave, it should be noted that the primary side high-frequency square wave can also be an alternating-current waveform such as a triangular wave, a sine wave and the like) can be transmitted to the output side, thereby improving the voltage utilization rate.
Meanwhile, the two half-wave type frequency converters on the secondary side form a novel split-phase output structure, output capacitors C1 and C2 of the LC filter can be loaded respectively or together, and output voltages can be balanced naturally. In the traditional full-bridge type high-frequency chain inverter, if balanced split-phase voltage output is to be realized, an additional third bridge arm is needed to realize the control of neutral line current, and the complexity and cost of topology are increased. In the proposed topology, the neutral line current can be controlled by using the switching transistors Q3, Q4 and Q7, Q8 without adding additional switching devices, thereby achieving two-phase output voltage balance.
And in the positive half cycle of the power grid voltage, an on command is sent to the switching tubes Q1 and Q6 to keep on, and an off command is sent to the switching tubes Q2 and Q5 to keep off. In the positive half cycle of the switching cycle, an off command is sent to the switching transistors Q3 and Q4, and an on command is sent to the switching transistors Q7 and Q8. When the primary voltage V AB Timing V ab The voltage is positive and energy is output to the grid by winding S1. When the primary voltage V AB When zero, the secondary current freewheels along the anti-parallel diodes of the switching tube Q1, the switching tube Q2, the switching tube Q8, the switching tube Q7, and the winding S1. In the negative half cycle of the switching cycle, an off command is sent to the switching transistors Q7 and Q8, and on commands are sent to the switching transistors Q3 and Q4. When the primary voltage V AB When negative, V bc The voltage is positive and energy is output to the grid by winding S2. When the primary voltage V AB When zero, the secondary current freewheels along the antiparallel diode of the switching tube Q4, the switching tube Q3, the switching tube Q6, the switching tube Q5, and the winding S2.
And in the negative half cycle of the power grid voltage, an off command is sent to the switching tubes Q1 and Q6 to keep normally off, an on command is sent to the switching tubes Q2 and Q5 to keep normally on. In the positive half cycle of the switching cycle, an off command is sent to the switching transistors Q7 and Q8, and on commands are sent to the switching transistors Q3 and Q4. When the primary voltage V AB Timing V bc The voltage is negative and energy is output by winding S2 to the grid. When the primary voltage V AB When zero, the secondary current freewheels along the antiparallel diode of the switching tube Q5 and Q6, the switching tube Q3, the switching tube Q4, and the winding S2. In the negative half cycle of the switching cycle, an off command is sent to the switching transistors Q3 and Q4, and on commands are sent to the switching transistors Q7 and Q8. When the primary voltage V AB When negative, V ab The voltage is a negative voltage and energy is output to the grid by winding S1. When the primary voltage V AB When zero, the secondary current freewheels along the anti-parallel diode of the switching tube Q7, the switching tube Q8, the switching tube Q2, the switching tube Q1, and the winding S1.
It should be noted that the primary side conversion topology may employ other forms of conversion topologies, such as half-bridge topologies, or push-pull circuits as shown in fig. 5, in addition to the H-type full-bridge conversion topology as shown in fig. 2.
Example two
As shown in fig. 6, the circuit topology of the double half-wave high-frequency chain-type micro inverter disclosed in the present embodiment is different from that of the first embodiment in that the present embodiment adopts two independent high-frequency transformers Tra1 and Tra2, the high-frequency square waves output by the conversion topology of the primary side are simultaneously loaded on the primary sides of the high-frequency transformers Tra1 and Tra2, one end of the secondary side winding of the high-frequency transformer Tra1 is shorted with one end of the secondary side winding of the high-frequency transformer Tra2, and the other ends of the secondary side windings of the high-frequency transformers Tra1 and Tra2 are the same name ends with the primary side 1 pin of the high-frequency transformer Tra1 and the primary side 2 pin of the high-frequency transformer Tra 2. The secondary windings of the high-frequency transformers Tra1 and Tra2 are respectively connected with a group of half-wave conversion circuit topologies, and then connected with a power grid or respectively connected with loads after LC filtering. Other structures and working principles of the present embodiment are the same as those of the first embodiment, and will not be described here again.
Claims (10)
1. The circuit topology of the double half-wave high-frequency chained micro inverter comprises a primary side conversion topology, and a signal waveform generated by the primary side conversion topology is loaded on the primary side of a transformer;
or two independent transformers are arranged, the signal waveforms generated by the primary side conversion topology are loaded on the primary sides of the two transformers at the same time, the secondary sides of the two transformers are respectively connected with a half-wave type frequency converter, and the energy of the positive half cycle and the negative half cycle of the primary side signal waveforms is transmitted to the output side through the two half-wave type frequency converters.
2. A double half wave high frequency chain-type micro inverter according to claim 1, wherein two of the half wave type frequency converters are capable of being loaded separately or together.
3. A double half-wave high-frequency chain-type micro-inverter according to claim 2, wherein the two half-wave type frequency converters respectively transmit the energy of positive and negative half cycles of the primary side high-frequency square wave to the output side through respective filter circuits, and the two filter circuits can be loaded separately or together.
4. A double half wave high frequency chain-link micro inverter as claimed in claim 1, wherein when a transformer is used, the number of turns of both said windings on the secondary side of the transformer is the same.
5. A double half wave high frequency chain-link micro inverter as claimed in claim 1, wherein when a transformer is used, two windings on the secondary side of the transformer are defined as winding one and winding two respectively, then:
during the positive half cycle of the grid voltage: in the positive half cycle of the switching cycle, when the primary voltage is positive, energy is output by the winding I, and when the primary voltage is zero, the secondary current follows a loop formed by the two half-wave type frequency converters and the winding I; in the negative half cycle of the switching cycle, when the primary voltage is negative, energy is output by the winding II, and when the primary voltage is zero, the secondary current follows a loop formed by the two half-wave type frequency converters and the winding II to carry out follow current;
at the negative half cycle of the grid voltage: in the positive half cycle of the switching cycle, when the primary voltage is positive, energy is output by the winding II, and when the primary voltage is zero, the secondary current follows a loop formed by the two half-wave type frequency converters and the winding II to carry out follow current; in the negative half of the switching cycle, when the primary voltage is negative, energy is output by the winding one, and when the primary voltage is zero, the secondary current freewheels along the loop formed by the two half-wave type cycloconverters and the winding one.
6. The double half wave high frequency chain type micro inverter according to claim 5, wherein the first winding is short-circuited with one end output of the second winding, and the other end output is the same name as one pin of the primary side.
7. The double half-wave high-frequency chain-type micro inverter according to claim 6, wherein the half-wave type frequency converter connected with the first winding comprises switching tubes Q1, Q2, Q3 and Q4, the homonymous end of the first winding is sequentially connected with the switching tubes Q1, Q2, Q3 and Q4, the switching tube Q4 is connected with the short-circuit end of the first winding again, and the two ends of the switching tubes Q3 and Q4 connected in series are the output of the half-wave type frequency converter;
the half-wave type frequency converter connected with the second winding comprises switching tubes Q5, Q6, Q7 and Q8, the same-name ends of the second winding are sequentially connected with the switching tubes Q5, Q6, Q7 and Q8, the switching tube Q8 is connected with the short-circuit end of the second winding, and the two ends of the switching tubes Q7 and Q8 connected in series are the output of the half-wave type frequency converter.
8. The double half-wave high-frequency chain-type micro-inverter according to claim 7, wherein the switching transistors Q1, Q6 are kept normally on and the switching transistors Q2, Q5 are kept normally off during the positive half cycle of the grid voltage; in the positive half cycle of the switching period, an off command is sent to the switching tubes Q3 and Q4, and an on command is sent to the switching tubes Q7 and Q8; in the negative half cycle of the switching period, an off command is sent to the switching tubes Q7 and Q8, and an on command is sent to the switching tubes Q3 and Q4;
in the negative half cycle of the power grid voltage, the switching tubes Q1 and Q6 are kept normally closed, and the switching tubes Q2 and Q5 are kept normally open; in the positive half cycle of the switching period, an off command is sent to the switching tubes Q7 and Q8, and an on command is sent to the switching tubes Q3 and Q4; in the negative half cycle of the switching cycle, an off command is sent to the switching transistors Q3 and Q4, and an on command is sent to the switching transistors Q7 and Q8.
9. A double half wave high frequency chain-link micro-inverter as claimed in claim 8, wherein during the positive half cycle of the grid voltage: in the positive half cycle of the switching cycle, when the primary side voltage is zero, the secondary side current freewheels along the anti-parallel diode of the switching tube Q1 and the switching tube Q2, the switching tube Q8, the switching tube Q7 and the winding I; in the negative half cycle of the switching cycle, when the primary side voltage is zero, the secondary side current freewheels along the anti-parallel diode and the winding II of the switching tube Q4, the switching tube Q3, the switching tube Q6 and the switching tube Q5;
at the negative half cycle of the grid voltage: in the positive half cycle of the switching cycle, when the primary side voltage is zero, the secondary side current freewheels along the anti-parallel diode, the switching tube Q3, the switching tube Q4 and the winding II of the switching tube Q5 and the switching tube Q6; in the negative half of the switching cycle, when the primary voltage is zero, the secondary current freewheels along the anti-parallel diodes of the switching tube Q7, the switching tube Q8, the switching tube Q2 and the switching tube Q1 and the winding one.
10. A double half-wave high frequency chained micro inverter in accordance with claim 1, wherein the primary side conversion topology is a full bridge conversion topology, a half bridge conversion topology or a push-pull topology.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310465551.4A CN116885965A (en) | 2023-04-26 | 2023-04-26 | Double half-wave high-frequency chain type micro inverter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310465551.4A CN116885965A (en) | 2023-04-26 | 2023-04-26 | Double half-wave high-frequency chain type micro inverter |
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| Publication Number | Publication Date |
|---|---|
| CN116885965A true CN116885965A (en) | 2023-10-13 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310465551.4A Pending CN116885965A (en) | 2023-04-26 | 2023-04-26 | Double half-wave high-frequency chain type micro inverter |
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- 2023-04-26 CN CN202310465551.4A patent/CN116885965A/en active Pending
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