CN115987119A - Inverter circuit based on three-phase full-bridge intelligent power module - Google Patents
Inverter circuit based on three-phase full-bridge intelligent power module Download PDFInfo
- Publication number
- CN115987119A CN115987119A CN202211663171.3A CN202211663171A CN115987119A CN 115987119 A CN115987119 A CN 115987119A CN 202211663171 A CN202211663171 A CN 202211663171A CN 115987119 A CN115987119 A CN 115987119A
- Authority
- CN
- China
- Prior art keywords
- phase
- bridge
- power module
- intelligent power
- phase full
- 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
-
- 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
Landscapes
- Inverter Devices (AREA)
Abstract
The application discloses inverter circuit based on three-phase full-bridge intelligent power module. The intelligent power module comprises a three-phase full-bridge intelligent power module IPM, wherein a direct-current positive terminal pin of the three-phase full-bridge intelligent power module IPM is electrically connected with the positive electrode of a direct-current power supply, and a direct-current negative terminal pin of the three-phase full-bridge intelligent power module IPM is electrically connected with the negative electrode of the direct-current power supply; the A-phase bridge arm of the three-phase full-bridge intelligent power module IPM is electrically connected with the wiring terminal L through an inductor L1, the B-phase bridge arm is electrically connected with the wiring terminal L through an inductor L2, and the C-phase bridge arm is electrically connected with the wiring terminal N; and the wiring terminal L and the wiring terminal N are used for outputting single-phase alternating current. The external discharging equipment of the electric automobile is completed by adopting the three-phase full-bridge intelligent power module, the direct current of the electric automobile is input, and the single-phase alternating current is output; compared with the method that single-phase alternating current is output through an H-bridge inverter topology, the reliability at the initial stage is high by adopting a three-phase full-bridge IPM; when single-phase alternating current is output, three bridge arms are utilized, and the capacity of any bridge arm is not wasted.
Description
Technical Field
The application relates to the technical field of power electronics, in particular to an inverter circuit based on a three-phase full-bridge intelligent power module.
Background
The inner core device of the outer discharger of the electric automobile is an inverter, the input of the inverter is direct current of the electric automobile, and the output of the inverter is single-phase alternating current or three-phase alternating current. Wherein, more consumers adopt single-phase alternating current, and less industrial users adopt three-phase alternating current.
The KW-class IPM (intelligent power module, including three-phase full-bridge inverter current, drive, protection circuit) does not have a single-phase H-bridge. At present, most of inverters for outputting single-phase alternating current on the market adopt an H-bridge inverter topology of a separating device, and single-phase electricity is output by independent driving. Because of the small number of industrial users, no additional three-phase alternating current circuit is basically designed.
The inventor realizes that the H bridge inversion topology can only be a splitter component, IPM cannot be adopted, and the reliability is poor in the initial stage. And the H-bridge inverter topology can only output single-phase alternating current, and if the three-phase alternating current is output, a three-phase full-bridge circuit must be redesigned. When a three-phase full-bridge circuit is adopted to output a single phase, one path of bridge arm capacity can be wasted and equipment cost is increased according to a conventional single-phase H-bridge application scheme.
Disclosure of Invention
Therefore, the inverter circuit based on the three-phase full-bridge intelligent power module is provided, and the problems that an IPM cannot be adopted in an H-bridge inverter topology and the reliability is poor in the initial stage in the prior art are solved.
In order to achieve the above object, the present application provides the following technical solutions:
in a first aspect, an inverter circuit based on a three-phase full-bridge intelligent power module comprises a three-phase full-bridge intelligent power module IPM, wherein a direct-current positive terminal pin of the three-phase full-bridge intelligent power module IPM is electrically connected with a positive electrode of a direct-current power supply, and a direct-current negative terminal pin of the three-phase full-bridge intelligent power module IPM is electrically connected with a negative electrode of the direct-current power supply;
the phase A bridge arm of the three-phase full-bridge intelligent power module IPM is electrically connected with a wiring terminal L through an inductor L1, the phase B bridge arm of the three-phase full-bridge intelligent power module IPM is electrically connected with the wiring terminal L through an inductor L2, and the phase C bridge arm of the three-phase full-bridge intelligent power module IPM is electrically connected with a wiring terminal N; and the wiring terminal L and the wiring terminal N are used for outputting single-phase alternating current.
Optionally, the model of the three-phase full-bridge intelligent power module IPM is PSS35SA2FT.
Optionally, the inductance of the inductors L1 and L2 is 500uh.
Optionally, the switching frequency of the C-phase bridge arm is 50Hz.
In a second aspect, an inverter circuit based on a three-phase full-bridge intelligent power module comprises a three-phase full-bridge intelligent power module IPM, wherein a direct-current positive terminal pin of the three-phase full-bridge intelligent power module IPM is electrically connected with a positive electrode of a direct-current power supply, and a direct-current negative terminal pin of the three-phase full-bridge intelligent power module IPM is electrically connected with a negative electrode of the direct-current power supply;
the phase A bridge arm of the three-phase full-bridge intelligent power module IPM is electrically connected with the wiring terminal A through an inductor L3, the phase B bridge arm of the three-phase full-bridge intelligent power module IPM is electrically connected with the wiring terminal B through an inductor L4, and the phase C bridge arm of the three-phase full-bridge intelligent power module IPM is electrically connected with the wiring terminal C through an inductor L5; and the wiring terminal A, the wiring terminal B and the wiring terminal C are used for outputting three-phase alternating current.
Optionally, the model of the three-phase full-bridge intelligent power module IPM is PSS35SA2FT.
Optionally, the inductance of the inductor L3, the inductor L4, and the inductor L5 is 500uh.
Optionally, the switching frequency of the C-phase bridge arm is 50Hz.
Compared with the prior art, the method has the following beneficial effects:
1. the application provides a novel hardware architecture of a single-phase inverter, which comprises a three-phase full-bridge intelligent power module IPM, wherein a direct-current positive terminal pin of the three-phase full-bridge intelligent power module IPM is electrically connected with a positive electrode of a direct-current power supply, and a direct-current negative terminal pin is electrically connected with a negative electrode of the direct-current power supply; the phase A bridge arm of the three-phase full-bridge intelligent power module IPM is electrically connected with a wiring terminal L through an inductor L1, the phase B bridge arm is electrically connected with the wiring terminal L through an inductor L2, and the phase C bridge arm is electrically connected with a wiring terminal N; the wiring terminal L and the wiring terminal N are used for outputting single-phase alternating current; the external discharging equipment of the electric automobile is completed by adopting the three-phase full-bridge intelligent power module, the direct current of the electric automobile is input, and the single-phase alternating current is output; compared with the method that single-phase alternating current is output through an H-bridge inversion topology of a separation device, the reliability at the initial stage is high due to the adoption of the three-phase full-bridge IPM; when single-phase alternating current is output, all three bridge arms are utilized, and the capacity of any one bridge arm is not wasted.
2. Based on the hardware architecture provided by the application, when three-phase alternating current needs to be output, a three-phase full-bridge circuit does not need to be redesigned, and on the basis of the structure of the single-phase inverter, the connection mode of each bridge arm and the wiring terminal is simply adjusted, so that the three-phase alternating current can be output, the use is convenient, and the equipment cost can be reduced.
Drawings
To more intuitively illustrate the prior art and the present application, several exemplary drawings are given below. It should be understood that the specific shapes, configurations, shown in the drawings, are not generally considered limitations on the practice of the present application; for example, it is within the ability of those skilled in the art to make routine adjustments or further optimization of the add/drop/attribute division, specific shapes, positional relationships, connection manners, size ratios, etc. of certain elements (components) based on the technical concepts disclosed in the present application and the exemplary drawings.
Fig. 1 is a schematic structural diagram of a single-phase inverter circuit based on a three-phase full-bridge intelligent power module according to an embodiment of the present application;
fig. 2 is a schematic structural diagram of a three-phase inverter circuit based on a three-phase full-bridge intelligent power module according to a second embodiment of the present application.
Detailed Description
The present application will be described in further detail below with reference to specific embodiments in conjunction with the accompanying drawings.
In the description of the present application: "plurality" means two or more unless otherwise specified. The terms "first", "second", "third", and the like in this application are intended to distinguish one referenced item from another without having a special meaning in technical connotation (e.g., should not be construed as emphasizing a degree or order of importance, etc.). The terms "comprising," "including," "having," and the like, are intended to be inclusive and mean "not limited to" (some elements, components, materials, steps, etc.).
In the present application, terms such as "upper", "lower", "left", "right", "middle", and the like are generally used for easy visual understanding with reference to the drawings, and are not intended to absolutely limit the positional relationship in an actual product. Changes in these relative positional relationships without departing from the technical concepts disclosed in the present application should also be considered as the scope of the present application.
Example one
In this embodiment, as shown in fig. 1, an inverter circuit based on a three-phase full-bridge intelligent power module is provided, which includes a three-phase full-bridge intelligent power module IPM, a dc positive terminal pin of the three-phase full-bridge intelligent power module IPM is electrically connected to a positive electrode of a dc power supply of an electric vehicle, and a dc negative terminal pin of the three-phase full-bridge intelligent power module IPM is electrically connected to a negative electrode of the dc power supply of the electric vehicle;
the phase A bridge arm of the three-phase full-bridge intelligent power module IPM is electrically connected with the wiring terminal L through an inductor L1, the phase B bridge arm of the three-phase full-bridge intelligent power module IPM is electrically connected with the wiring terminal L through an inductor L2, and the phase C bridge arm of the three-phase full-bridge intelligent power module IPM is electrically connected with the wiring terminal N; and the wiring terminal L and the wiring terminal N are used for outputting single-phase alternating current.
Preferably, one product model of the three-phase full-bridge intelligent power module IPM is PSS35SA2FT.
That is to say, when single-phase alternating current needs to be output, the phase A bridge arm is connected with one path of inductor, the phase B bridge arm is connected with the other path of inductor, then the phase A bridge arm and the phase B bridge arm are in short circuit together, and then the phase A bridge arm and the phase B bridge arm are connected with the connecting terminal L; the C-phase bridge arm is directly connected to the wiring terminal N without being connected with an inductor, so that the three-phase full-bridge intelligent power module IPM can complete single-phase output.
Wherein, the C-phase bridge arm adopts a switching frequency switched by 50Hz. Because the A-phase bridge arm and the B-phase bridge arm have conduction loss and switching loss, and the C-phase bridge arm only has conduction loss (the switching loss is very low), when single-phase alternating current is output, the sum of currents flowing through the A-phase bridge arm and the B-phase bridge arm can be collected and flows through the C-phase bridge arm, the capacity of a power electronic circuit of the three-phase bridge arm is not wasted, and all the capacities are fully utilized.
In addition, on the basis of the inverter provided by the embodiment, an inverter circuit capable of outputting three-phase alternating current can be completed only by simply changing the connection mode of each bridge arm and the connection terminal, and a three-phase full-bridge circuit does not need to be redesigned.
Specifically, as shown in fig. 2, the inverter circuit capable of outputting three-phase ac power includes a three-phase full-bridge intelligent power module IPM, a dc positive terminal pin of the three-phase full-bridge intelligent power module IPM is electrically connected to a positive electrode of a dc power supply of the electric vehicle, and a dc negative terminal pin of the three-phase full-bridge intelligent power module IPM is electrically connected to a negative electrode of the dc power supply of the electric vehicle;
the phase A bridge arm of the three-phase full-bridge intelligent power module IPM is electrically connected with the wiring terminal A through an inductor L3, the phase B bridge arm of the three-phase full-bridge intelligent power module IPM is electrically connected with the wiring terminal B through an inductor L4, and the phase C bridge arm of the three-phase full-bridge intelligent power module IPM is electrically connected with the wiring terminal C through an inductor L5; and the wiring terminal A, the wiring terminal B and the wiring terminal C are used for outputting three-phase alternating current.
That is to say, when three-phase alternating current needs to be output, the a-phase bridge arm, the B-phase bridge arm and the C-phase bridge arm are respectively connected with the inductor and then respectively connected with the connecting terminal a, the connecting terminal B and the connecting terminal C, so that three-phase alternating current output can be simply completed through the three connecting terminals.
Preferably, the inductance of the inductor L1, the inductor L2, the inductor L3, the inductor L4, and the inductor L5 is 500uh.
The application provides a new hardware architecture of single-phase inverter, adopts three-phase full-bridge intelligent power module to accomplish electric automobile's outer discharge apparatus, and the input is electric automobile's direct current, and the output is single-phase alternating current. When single-phase alternating current is output, all three bridge arms are utilized, and the capacity of any bridge arm is not wasted; compared with the method that a single-phase alternating current is output through a separation device, the reliability at the initial stage is high by adopting the three-phase full-bridge IPM.
And when three-phase alternating current is required to be output, a three-phase full-bridge circuit is not required to be redesigned, and on the basis of the structure of the inverter, the connection mode of each bridge arm and the connecting terminal is simply adjusted, so that the three-phase alternating current can be output, the use is convenient, and the equipment cost can be reduced.
Example two
In this embodiment, as shown in fig. 2, an inverter circuit based on a three-phase full-bridge intelligent power module is provided, which includes a three-phase full-bridge intelligent power module IPM, a dc positive terminal pin of the three-phase full-bridge intelligent power module IPM is electrically connected to a positive electrode of a dc power supply of an electric vehicle, and a dc negative terminal pin of the three-phase full-bridge intelligent power module IPM is electrically connected to a negative electrode of the dc power supply of the electric vehicle;
the phase A bridge arm of the three-phase full-bridge intelligent power module IPM is electrically connected with the connecting terminal A through an inductor L3, the phase B bridge arm of the three-phase full-bridge intelligent power module IPM is electrically connected with the connecting terminal B through an inductor L4, and the phase C bridge arm of the three-phase full-bridge intelligent power module IPM is electrically connected with the connecting terminal C through an inductor L5; and the wiring terminal A, the wiring terminal B and the wiring terminal C are used for outputting three-phase alternating current.
Preferably, one product model of the three-phase full-bridge intelligent power module IPM is PSS35SA2FT.
That is to say, when three-phase alternating current needs to be output, the a-phase bridge arm, the B-phase bridge arm and the C-phase bridge arm are respectively connected with the inductor and then respectively connected with the connecting terminal a, the connecting terminal B and the connecting terminal C, so that three-phase alternating current output can be simply completed through the three connecting terminals.
Wherein, the C-phase bridge arm adopts a switching frequency switched by 50Hz.
In addition, on the basis of the inverter provided by the embodiment, the inverter circuit capable of outputting single-phase alternating current can be completed only by simply changing the connection mode of each bridge arm and the connecting terminal, and the single-phase H-bridge circuit does not need to be redesigned. Specifically, as shown in fig. 1, the inverter circuit capable of outputting single-phase alternating current includes a three-phase full-bridge intelligent power module IPM, a direct-current positive terminal pin of the three-phase full-bridge intelligent power module IPM is electrically connected to a positive electrode of a direct-current power supply of the electric vehicle, and a direct-current negative terminal pin of the three-phase full-bridge intelligent power module IPM is electrically connected to a negative electrode of the direct-current power supply of the electric vehicle;
the A-phase bridge arm of the three-phase full-bridge intelligent power module IPM is electrically connected with the wiring terminal L through an inductor L1, the B-phase bridge arm of the three-phase full-bridge intelligent power module IPM is electrically connected with the wiring terminal L through an inductor L2, and the C-phase bridge arm of the three-phase full-bridge intelligent power module IPM is electrically connected with the wiring terminal N; and the wiring terminal L and the wiring terminal N are used for outputting single-phase alternating current.
That is to say, when single-phase alternating current needs to be output, the phase A bridge arm is connected with one path of inductor, the phase B bridge arm is connected with the other path of inductor, then the phase A bridge arm and the phase B bridge arm are in short circuit together, and then the phase A bridge arm and the phase B bridge arm are connected with the connecting terminal L; the C-phase bridge arm is directly connected to the wiring terminal N without being connected with an inductor, so that the three-phase full-bridge intelligent power module IPM can complete single-phase output.
Because the A-phase bridge arm and the B-phase bridge arm have conduction loss and switching loss, and the C-phase bridge arm only has conduction loss (the switching loss is very low), when single-phase alternating current is output, the sum of currents flowing through the A-phase bridge arm and the B-phase bridge arm can be collected and flows through the C-phase bridge arm, the capacity of a power electronic circuit of the three-phase bridge arm is not wasted, and all the capacities are fully utilized.
Preferably, the inductance of the inductor L1, the inductor L2, the inductor L3, the inductor L4, and the inductor L5 is 500uh.
The application provides a new hardware architecture of three-phase inverter, adopts three-phase full-bridge intelligent power module to accomplish electric automobile's outer discharge apparatus, and the input is electric automobile's direct current, and the output is three-phase alternating current.
When single-phase alternating current is required to be output, a single-phase H-bridge circuit does not need to be redesigned, the single-phase alternating current can be output only by simply changing the connection mode of each bridge arm and the wiring terminal, the use is convenient, and the equipment cost can be reduced.
In conclusion, the single-phase alternating current power supply can output single-phase alternating current and three-phase alternating current, and a single-phase H-bridge circuit and a three-phase full-bridge circuit are not required to be designed respectively. Three-phase alternating current and single-phase alternating current can be output only by simply changing the connection mode of each bridge arm and the wiring terminal. When single-phase alternating current is output, all three bridge arms are utilized, and the capacity of any one bridge arm is not wasted. Compared with the method that a single-phase alternating current is output through a separation device, the reliability at the initial stage is high by adopting the three-phase full-bridge IPM.
All the technical features of the above embodiments can be arbitrarily combined (as long as there is no contradiction between the combinations of the technical features), and for brevity of description, all the possible combinations of the technical features in the above embodiments are not described; these examples, which are not explicitly described, should be considered to be within the scope of the present description.
The present application has been described in considerable detail with reference to certain embodiments and examples thereof. It should be understood that several conventional adaptations or further innovations of these specific embodiments may also be made based on the technical idea of the present application; however, such conventional modifications and further innovations can also fall into the scope of the claims of the present application as long as they do not depart from the technical idea of the present application.
Claims (8)
1. The inverter circuit based on the three-phase full-bridge intelligent power module is characterized by comprising a three-phase full-bridge intelligent power module IPM, wherein a direct-current positive terminal pin of the three-phase full-bridge intelligent power module IPM is electrically connected with a positive electrode of a direct-current power supply, and a direct-current negative terminal pin of the three-phase full-bridge intelligent power module IPM is electrically connected with a negative electrode of the direct-current power supply;
the phase A bridge arm of the three-phase full-bridge intelligent power module IPM is electrically connected with a wiring terminal L through an inductor L1, the phase B bridge arm of the three-phase full-bridge intelligent power module IPM is electrically connected with the wiring terminal L through an inductor L2, and the phase C bridge arm of the three-phase full-bridge intelligent power module IPM is electrically connected with a wiring terminal N; and the wiring terminal L and the wiring terminal N are used for outputting single-phase alternating current.
2. The inverter circuit of claim 1, wherein the three-phase full-bridge smart power module IPM is PSS35SA2FT.
3. The inverter circuit based on the three-phase full-bridge intelligent power module as claimed in claim 1, wherein the inductance of the inductors L1 and L2 is 500uh.
4. The three-phase full-bridge intelligent power module-based inverter circuit according to claim 1, wherein the switching frequency of the C-phase bridge arm is 50Hz.
5. The inverter circuit based on the three-phase full-bridge intelligent power module is characterized by comprising a three-phase full-bridge intelligent power module IPM, wherein a direct-current positive terminal pin of the three-phase full-bridge intelligent power module IPM is electrically connected with a positive electrode of a direct-current power supply, and a direct-current negative terminal pin of the three-phase full-bridge intelligent power module IPM is electrically connected with a negative electrode of the direct-current power supply;
the phase A bridge arm of the three-phase full-bridge intelligent power module IPM is electrically connected with a wiring terminal A through an inductor L3, the phase B bridge arm of the three-phase full-bridge intelligent power module IPM is electrically connected with a wiring terminal B through an inductor L4, and the phase C bridge arm of the three-phase full-bridge intelligent power module IPM is electrically connected with a wiring terminal C through an inductor L5; and the wiring terminal A, the wiring terminal B and the wiring terminal C are used for outputting three-phase alternating current.
6. The inverter circuit of claim 5, wherein the IPM is PSS35SA2FT.
7. The inverter circuit based on the three-phase full-bridge intelligent power module as claimed in claim 5, wherein the inductance of the inductor L3, the inductor L4 and the inductor L5 is 500uh.
8. The three-phase full-bridge intelligent power module-based inverter circuit according to claim 5, wherein the switching frequency of the C-phase bridge arm is 50Hz.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211663171.3A CN115987119A (en) | 2022-12-23 | 2022-12-23 | Inverter circuit based on three-phase full-bridge intelligent power module |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211663171.3A CN115987119A (en) | 2022-12-23 | 2022-12-23 | Inverter circuit based on three-phase full-bridge intelligent power module |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115987119A true CN115987119A (en) | 2023-04-18 |
Family
ID=85962125
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211663171.3A Pending CN115987119A (en) | 2022-12-23 | 2022-12-23 | Inverter circuit based on three-phase full-bridge intelligent power module |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115987119A (en) |
-
2022
- 2022-12-23 CN CN202211663171.3A patent/CN115987119A/en active Pending
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EP3886304B1 (en) | On-board charger | |
| US11660975B2 (en) | AC charging of an intelligent battery | |
| CN103620941B (en) | Many level shifting circuits | |
| EP1585214A1 (en) | Motor drive device for air conditioner | |
| CN106787253B (en) | Based on T- Π composite resonant network ECPT system and its Parameters design | |
| US11228255B2 (en) | Rectifier assembly | |
| CN204886704U (en) | High -power switching power supply circuit and have high -voltage inverter of this circuit | |
| CN103227610B (en) | Circuit for controlling motor and automobile | |
| CN103683999B (en) | Combining inverter and output filter method thereof | |
| CN111049409B (en) | Voltage mixed type clamp type three-level inverter circuit and application device thereof | |
| CN102751896B (en) | Through physical separation-type Z-source inverter with high booster multiple | |
| CN112297894A (en) | Integrated vehicle-mounted charger with wide-range output | |
| CN111740584A (en) | Single-phase staggered and three-phase Vienna topology compatible input PFC device | |
| CN115987119A (en) | Inverter circuit based on three-phase full-bridge intelligent power module | |
| CN110224584A (en) | Household appliance and its passive power factor correcting circuit | |
| CN220325524U (en) | Inverter circuit based on three-phase full-bridge intelligent power module | |
| CN102118057A (en) | DC UPS circuit with integrated charge-discharge circuit | |
| CN202276177U (en) | High voltage direct current charger | |
| CN113141048B (en) | Vehicle-mounted charger circuit, vehicle-mounted charger and electric automobile | |
| CN105991020A (en) | Power factor correction rectifier and uninterrupted power supply | |
| CN111542996A (en) | Voltage conversion circuit of integrated vehicle-mounted charger | |
| CN117674600B (en) | Converter circuit for cascade energy storage | |
| CN208001233U (en) | Dc-dc converter | |
| EP4147338B1 (en) | Electrical power converter with pre-charge mode of operation | |
| CN219227230U (en) | Wind power converter |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |