CN112821387A - Wind power converter, fan converter system and fault processing method thereof - Google Patents
Wind power converter, fan converter system and fault processing method thereof Download PDFInfo
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Abstract
The method comprises the steps of firstly judging whether the wind power converter fails, and if the wind power converter fails, determining the type of the failure; if the type of the fault is a common fault, sending a fault notification to a fan main control system of a wind generating set in a fan converter system, and enabling the wind generating set to enter a shutdown mode; and controlling the wind power converter to stop after meeting the preset stop condition of the wind generating set. That is, this application can be when wind power converter takes place general trouble, and to the main control system of fan send trouble notice for wind generating set gets into the shutdown mode, reserves sufficient time for wind generating set, in order to guarantee that wind generating set can steadily shut down, eliminates current mode of shutting down fast and causes the impact to the fan drive chain, has guaranteed fan drive chain life, has improved wind generating set's safe operation coefficient.
Description
Technical Field
The invention relates to the technical field of wind power, in particular to a wind power converter, a fan converter system and a fault processing method thereof.
Background
With the continuous development of wind power generation technology, wind power converters are also widely applied. According to data investigation, the installed capacity of wind power in China is in a positive growth state year by year, and strong power is provided for the development of the wind power converter industry in China.
At present, after any fault occurs in a wind power converter, such as a serious fault or a general fault, a main controller of the wind power converter is informed through a fault dry node and a communication signal, and then the wind power converter is stopped after a certain time delay; however, the wind power converter can impact the fan transmission chain in a mode of rapidly reducing load and stopping the machine, and the service life of the fan transmission chain is greatly influenced.
Disclosure of Invention
Therefore, the wind power converter, the fan converter system and the fault processing method thereof are provided to solve the problem that the existing wind power converter can impact a fan transmission chain in a mode of rapidly reducing load and stopping the machine, and the service life of the fan transmission chain is influenced.
In order to achieve the above purpose, the embodiments of the present invention provide the following technical solutions:
the invention discloses a fault processing method of a fan converter system, which is applied to a central control unit of a wind power converter in the fan converter system, and comprises the following steps:
judging whether the wind power converter fails or not;
if the wind power converter fails, determining the type of the failure;
if the type of the wind generating set belongs to a common fault, sending a fault notification to a fan main control system of the wind generating set in the fan converter system, and enabling the wind generating set to enter a shutdown mode;
and controlling the wind power converter to stop after meeting the stop condition of the preset wind generating set.
Optionally, in the fault handling method of the wind turbine converter system, the preset wind turbine generator set shutdown condition includes:
receiving a shutdown instruction issued by the fan master control system; alternatively, the first and second electrodes may be,
and detecting that the rotating speed of a fan of the wind generating set is less than a preset rotating speed.
Optionally, in the fault handling method of the wind turbine converter system, the general fault includes: at least one of water cooling system faults, converter environment over-temperature faults, converter internal fan feedback contact abnormity, fuse node faults and current imbalance.
Optionally, in the method for processing a fault of a wind turbine converter system, after determining the type of the fault, the method further includes:
and if the type of the wind power converter is a serious fault, controlling the wind power converter to remove the load and stop the wind power converter.
Optionally, in the fault handling method of the wind turbine converter system, the serious fault includes: instantaneous alternating current overvoltage, direct current overvoltage, IGBT (insulated gate bipolar transistor) continuous overcurrent, and IGBT continuous overtemperature.
Optionally, in the fault processing method of the wind turbine converter system, after determining whether the wind power converter fails, the method further includes:
and if the wind power converter is judged not to have a fault, returning to the step of judging whether the wind power converter has a fault.
Optionally, in the method for processing a fault of a wind turbine converter system, after sending a fault notification to a wind turbine master control system in the wind turbine converter system, the method further includes:
and if the preset wind generating set stopping condition is not met, returning to the step of judging whether the wind power converter fails.
The second aspect of the present invention discloses a wind power converter, comprising: the cooling system comprises a main converter circuit, a cooling system and a central control unit for controlling the operation of the main converter circuit and the cooling system;
the central control unit is configured to execute a fault handling method of any one of the wind turbine converter systems disclosed in the first aspect.
Optionally, in the wind power converter, the central control unit includes: the system comprises a communication module, an algorithm processing module and a peripheral function module; wherein:
the algorithm processing module is used for realizing at least one of parameter correction, torque correction, parameter calculation, torque reduction calculation and limited power calculation;
the peripheral function module is used for realizing at least one of parameter storage, state detection, upper communication program, DI/DO transmission and AI/AO transmission;
the communication module is used for realizing communication signal transmission between the algorithm processing module and/or the peripheral function module and external equipment.
Optionally, in the wind power converter, the main converter circuit includes: the device comprises a machine side converter module, a direct current bus and a network side converter module;
the alternating current side of the machine side converter module is connected with the wind generating set through the machine side reactor and the machine side switch in sequence;
the direct current side of the machine side converter module and the direct current side of the network side converter module are both connected with the direct current bus;
a corresponding braking unit is arranged between the positive electrode and the negative electrode of the direct current bus;
and the alternating current side of the grid side current transformation module is connected with a power grid through a grid side reactor and a grid side switch in sequence.
Optionally, in the wind power converter, the heat dissipation system is a water cooling system.
The third aspect of the present invention discloses a fan converter system, comprising: a wind generating set and at least one wind power converter connected with the wind generating set according to any one of the second aspect disclosure; wherein:
the fan main control system of the wind generating set is in communication connection with the central control unit in the wind power converter;
the fan main control system is used for controlling the wind generating set to output power to the wind power converter and controlling the wind generating set to enter a shutdown mode according to the fault notification sent by the central control unit.
The method is used for a central control unit of a wind power converter in the fan converting system, firstly, whether the wind power converter fails is judged, and if the wind power converter fails, the type of the failure is determined; if the type of the fault is a common fault, sending a fault notification to a fan main control system of a wind generating set in a fan converter system, and enabling the wind generating set to enter a shutdown mode; and controlling the wind power converter to stop after meeting the preset stop condition of the wind generating set. That is, this application can be when wind power converter takes place general trouble, and to the main control system of fan send trouble notice for wind generating set gets into the shutdown mode, reserves sufficient time for wind generating set, in order to guarantee that wind generating set can steadily shut down, eliminates current mode of shutting down fast and causes the impact to the fan drive chain, has guaranteed fan drive chain life, has improved wind generating set's safe operation coefficient.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.
Fig. 1 is a schematic structural diagram of a wind power converter provided in an embodiment of the present application;
fig. 2 is a schematic structural diagram of a central control unit according to an embodiment of the present disclosure;
fig. 3 is a schematic structural diagram of a main current transformer circuit according to an embodiment of the present disclosure;
FIG. 4 is a schematic structural diagram of a wind turbine converter system according to an embodiment of the present disclosure;
fig. 5 to fig. 8 are flowcharts of a fault handling method for four fan conversion systems according to an embodiment of the present application.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The embodiment of the application provides a wind power converter, and a fault processing method of a fan current conversion system, which is implemented by a central control unit in the wind power converter, can solve the problem that the service life of a fan transmission chain is influenced because the fan transmission chain is impacted in a mode of rapidly reducing load and stopping the machine of the existing converter.
Referring to fig. 1, the wind power converter mainly includes: a main converter circuit 101, a heat dissipation system 102 and a central control unit 103 for controlling the operation of the two.
It should be noted that the central control unit 103 of the wind power converter is a control center of the wind power converter, and can determine whether the wind power converter fails and the type of the failed wind power converter according to the operating parameter information and the state of the wind power converter.
In practical applications, as shown in fig. 2, the central control unit 103 includes: a communication module (shown in the figure for slave station communication and master station communication), an algorithm processing module (shown in the figure for algorithm processing), and a peripheral function module (shown in the figure for peripheral function). Wherein:
the algorithm processing module is used for realizing at least one of parameter correction, torque correction, parameter calculation, torque reduction calculation and power limit calculation, namely the content shown in the right side box of the algorithm processing module in fig. 2.
It should be noted that the algorithm processing module configured in the central control unit 103 is mainly used for taking charge of the algorithm operation required by the operation of the wind power converter. In practical application, the specific algorithm processing executed by the wind power converter can be determined according to specific conditions and user selection, and is not limited to the contents of parameter correction, torque correction, parameter calculation, torque reduction calculation, power limit calculation and the like, and can also be other algorithms arranged in the existing wind power converter.
The peripheral function module is used for realizing at least one of parameter storage, state detection, upper communication program, DI/DO transmission and AI/AO transmission, namely the content shown in the box on the left side of the peripheral function module in fig. 2.
It should be noted that the functions of the peripheral function modules configured in the central control unit 103 can be configured by itself according to the application environment required by the user, and are not limited to the above-mentioned contents of parameter storage, status detection, upper communication program, DI/DO transmission, AI/AO transmission, etc., and the specific functions of the peripheral function modules are all within the scope of the present application.
The communication module is used for realizing communication signal transmission between the algorithm processing module and/or the peripheral function module and external equipment. This external equipment can be the fan master control system or the host computer that set up in the wind-powered electricity generation converter is outside, also can set up in the inside auxiliary assembly of this wind-powered electricity generation converter, for example the cooling system 102 of wind-powered electricity generation converter self, and this application external equipment does not do the injeciton, as long as and the wind-powered electricity generation converter between can carry out communication signal transmission's equipment, all belong to the protection scope of this application.
In practical applications, as shown in fig. 2, the communication module generally includes a master communication module (for master communication in the figure) and a slave communication module (for slave communication in the figure). The slave station communication module is mainly used for being in charge of communicating with the fan master control system, wherein the communication mode with the fan master control system can be simple communication data exchange or communication data exchange realized by adopting an I/O hard contact node.
The master station communication module is mainly used for being in communication connection with each DSP chip (DSP 1, DSP2 … DSPn shown in fig. 2) in the wind power converter, performing data exchange with each DSP chip in real time, or implementing issuing of a control command to the DSP chip, or implementing operations such as DSP parameter setting, parameter monitoring, or mode setting, that is, the control command, data exchange, parameter setting, mode setting, parameter monitoring, and the like shown between the master station communication module and each DSP chip in fig. 2. The functions that can be realized between master station communication and each DSP chip can also be referred to in the prior art, and this application is not repeated, and all belong to the scope of protection of this application.
In practical application, as shown in fig. 3, the main converter circuit 101 mainly includes: a machine side converter module 1011 and a dc bus and grid side converter module 1012.
And the alternating current side of the machine side converter module 1011 is connected with the wind generating set through the machine side reactor and the machine side switch in sequence.
The dc side of the machine side converter module 1011 and the dc side of the grid side converter module 1012 are both connected to a dc bus.
Corresponding braking units (not shown) are provided between the positive and negative poles of the dc bus.
The ac side of the grid side converter module 1012 is connected to the grid via a grid side reactor and a grid side switch in sequence.
It should be noted that, for the relevant description of the machine side converter module 1011, the dc bus and the grid side converter module 1012 in the main circuit of the wind power converter, reference may also be made to the prior art, which is not described herein again, and all belong to the protection scope of the present application.
In practical application, the heat dissipation system 102 in the wind power converter may be a water cooling system, and certainly, may also be an air cooling system, and the specific type of the heat dissipation system 102 is not limited in the present application, and all belong to the protection scope of the present application.
It should be noted that, please refer to the embodiments corresponding to fig. 5 to fig. 8 for a specific implementation process of the central control unit 103 for executing the fault processing method of the wind turbine converter system, which is not described herein again.
On the basis of fig. 1 to fig. 3, another embodiment of the present application further provides a wind turbine converter system, please refer to fig. 4, where the wind turbine converter system mainly includes: a wind generating set 201 and at least one wind power converter 202 connected with the wind generating set as described in the above embodiments. Wherein:
and a fan main control system of the wind generating set 201 is in communication connection with the central control unit 103 in the wind power converter 202.
In practical application, the wind turbine generator 201 is controlled by a main control system of the wind turbine.
Specifically, as shown in fig. 2, the fan master control system is connected to the slave station communication module in the central control unit 103 by using an I/O hard contact node, so as to implement data exchange between the two.
The fan main control system is used for controlling the wind generating set 201 to output power to the wind power converter 202, and controlling the wind generating set 201 to enter a shutdown mode according to a fault notification sent by the central control unit 103.
It should be noted that, in practical application, when the fan main control system learns that the wind power converter 202 has a fault, the fan main control system enters a shutdown mode; after the wind turbine in the wind turbine generator set 201 is shut down, the wind turbine main control system may issue a shutdown command to the wind power converter 202.
On the basis of the wind power converter and the fan converter system, the embodiment of the application provides a fault processing method of the fan converter system, and aims to solve the problem that the existing wind power converter can impact a fan transmission chain in a rapid load reduction and shutdown mode to influence the service life of the fan transmission chain.
Referring to fig. 5, the fault handling method of the wind turbine converter system is applied to a central control unit of a wind power converter in the wind turbine converter system, and mainly includes the following steps:
s101, judging whether the wind power converter fails.
The specific manner of judging whether the wind power converter fails by the central control unit can be the same as that of the prior art, and is not elaborated here.
If the wind power converter fails, step S102 is executed.
And S102, determining the type of the fault.
In practical application, the fault types of the wind power converter can be divided into general faults and serious faults according to the fault grades or according to specific application conditions and user requirements. The general fault refers to a fault that the wind power converter can still continue to operate for a period of time after the wind power converter fails, the length of the period of time can be longer than the time occupied by the delayed shutdown of the wind power converter in the prior art, and the serious fault refers to a fault that the wind power converter cannot continue to operate after the fault occurs and the shutdown must be removed.
In practical applications, general failures mainly include: at least one of water cooling system faults, converter environment over-temperature faults, converter internal fan feedback contact abnormity, fuse node faults and current imbalance.
Certainly, not only this is not limited, but also according to the application environment and the user requirement, the fault of other wind power converters can be regarded as a general fault, for example, the IGBT overcurrent in the wind power converter is regarded as a general fault, and the specific type of the general fault is not limited in the present application, and all belong to the protection scope of the present application.
If it is determined that the type of the fault is a general fault, step S103 is performed.
S103, sending a fault notification to a fan main control system of the wind generating set in the fan variable flow system, and enabling the wind generating set to enter a shutdown mode.
In practical applications, if the central control unit has the structure shown in fig. 2, the failure notification may be sent to the fan main control system through a communication manner of an I/O hard-contact node adopted between the slave station communication module and the fan main control system.
Of course, the method is not limited to this, and the central control unit may also send the fault notification to the fan master control system through other communication methods between the central control unit and the fan master control system.
And S104, controlling the wind power converter to stop after the preset wind generating set stop condition is met.
In practical application, the preset wind generating set shutdown condition can be a shutdown instruction sent by a fan main control system; or detecting that the rotating speed of a fan of the wind generating set is less than the preset rotating speed.
It should be noted that, when the wind power converter is stopped when the rotation speed of the fan is lower than the preset rotation speed, the impact on the fan transmission chain is not caused. The specific value of the preset rotating speed is determined according to the visual application environment and the user requirement, the application does not limit the specific value, and the wind power converter is controlled to stop when the specific value is lower than the preset rotating speed, so that impact on a fan transmission chain can not be caused.
In practical application, when the wind power converter detects that the rotating speed of a fan of the wind generating set is less than a preset rotating speed, the wind power converter can automatically stop running.
Based on the principle, the fault processing method of the fan converter system provided by the embodiment can send a fault notification to the main control system of the fan when the wind power converter has a general fault, so that the wind power generator set enters a shutdown mode, and then the wind power converter is controlled to be shut down after the shutdown condition of the preset wind power generator set is met; enough time is reserved for the wind generating set to ensure that the wind generating set can be stably stopped, the impact on a fan transmission chain caused by the existing rapid load-reducing and stopping mode is eliminated, the service life of the fan transmission chain is ensured, and the safe operation coefficient of the wind generating set is improved.
Optionally, in another embodiment provided by the present application, on the basis of fig. 5, as shown in fig. 6, after the step S102 is executed and the type of the fault is determined, if it is determined that the type of the fault is a serious fault, the step S201 is executed.
S201, controlling the wind power converter to remove load and stop.
In practical application, the serious fault of the wind power converter mainly comprises the following steps: instantaneous AC overvoltage, DC overvoltage, IGBT continuous overcurrent and IGBT continuous overtemperature.
Certainly, the serious fault of the wind power converter is not limited to this, and the faults of other wind power converters can be classified as the serious fault according to the user requirement or the application environment.
It should be noted that, after a serious fault occurs in the wind power converter, if the wind power converter continues to operate, the wind power converter is controlled to be powered down immediately to avoid irreversible damage to the wind power converter due to the serious fault, because the wind power converter is controlled to be powered down and powered down preferentially to cause damage to the impact of a fan transmission chain caused by the rapid control of the fan to be powered down and load removal.
Optionally, in another embodiment provided by the present application, on the basis of fig. 6, as shown in fig. 7, after executing S101 and determining whether the wind power converter fails, if it is determined that the wind power converter fails, returning to execute step S101 and determining whether the wind power converter fails.
In practical application, after the wind power converter is judged not to have a fault, the step S101 can be immediately executed, or the step S101 can be executed after a certain preset time, and the specific application environment and the user requirement are determined according to the specific application environment.
It should be noted that when it is determined that the wind power converter fails, immediately returning to the step S101 can implement real-time fault detection on the wind power converter, so that the wind power converter is timely processed after the wind power converter fails, and the real-time performance of fault processing is improved.
Optionally, in another embodiment provided by the present application, as shown in fig. 8, after step S103 is executed, a fault notification is sent to a wind turbine main control system of a wind turbine generator set in a wind turbine converter system, so that the wind turbine generator set enters a shutdown mode, if a preset wind turbine generator set shutdown condition is not met, the method further includes:
and returning to the step S101 and judging whether the wind power converter has a fault.
It should be noted that, if the preset wind generating set condition is not met, it is indicated that the control of stopping the wind power converter at this time may cause impact on the fan transmission chain, and further affect the service life of the fan transmission chain, and therefore, the wind power converter should be returned to execute the judgment of whether the wind power converter fails, that is, the wind power converter returns to execute step S101 to execute step S103 again, and then the wind power converter is controlled to stop when the preset wind generating set stop condition is met, so as to avoid impact on the fan transmission chain.
Features described in the embodiments in the present specification may be replaced with or combined with each other, and the same and similar portions among the embodiments may be referred to each other, and each embodiment is described with emphasis on differences from other embodiments. In particular, the system or system embodiments are substantially similar to the method embodiments and therefore are described in a relatively simple manner, and reference may be made to some of the descriptions of the method embodiments for related points. The above-described system and system embodiments are only illustrative, wherein the units described as separate parts may or may not be physically separate, and the parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution of the present embodiment. One of ordinary skill in the art can understand and implement it without inventive effort.
Those of skill would further appreciate that the various illustrative elements and algorithm steps described in connection with the embodiments disclosed herein may be implemented as electronic hardware, computer software, or combinations of both, and that the various illustrative components and steps have been described above generally in terms of their functionality in order to clearly illustrate this interchangeability of hardware and software. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the implementation. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present invention.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
It is further noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
Claims (12)
1. A fault processing method of a wind turbine converter system is characterized by being applied to a central control unit of a wind power converter in the wind turbine converter system, and comprises the following steps:
judging whether the wind power converter fails or not;
if the wind power converter fails, determining the type of the failure;
if the type of the wind generating set belongs to a common fault, sending a fault notification to a fan main control system of the wind generating set in the fan converter system, and enabling the wind generating set to enter a shutdown mode;
and controlling the wind power converter to stop after meeting the stop condition of the preset wind generating set.
2. The method for handling the fault of the wind turbine converter system according to claim 1, wherein the preset wind turbine generator system shutdown condition comprises:
receiving a shutdown instruction issued by the fan master control system; alternatively, the first and second electrodes may be,
and detecting that the rotating speed of a fan of the wind generating set is less than a preset rotating speed.
3. The method for handling the fault of the wind turbine converter system according to claim 1, wherein the general fault includes: at least one of water cooling system faults, converter environment over-temperature faults, converter internal fan feedback contact abnormity, fuse node faults and current imbalance.
4. The method for handling the fault of the wind turbine converter system according to any one of claims 1 to 3, wherein after determining the type of the fault, the method further comprises:
and if the type of the wind power converter is a serious fault, controlling the wind power converter to remove the load and stop the wind power converter.
5. The method for handling the fault of the wind turbine converter system according to claim 4, wherein the serious fault includes: instantaneous AC overvoltage, DC overvoltage, IGBT continuous overcurrent and IGBT continuous overtemperature.
6. The method for processing the fault of the wind turbine converter system according to any one of claims 1 to 3, wherein after determining whether the wind power converter has a fault, the method further includes:
and if the wind power converter is judged not to have a fault, returning to the step of judging whether the wind power converter has a fault.
7. The method for handling the fault of the wind turbine converter system according to any one of claims 1 to 3, wherein after sending the fault notification to the wind turbine master control system in the wind turbine converter system, the method further includes:
and if the preset wind generating set stopping condition is not met, returning to the step of judging whether the wind power converter fails.
8. A wind power converter, comprising: the cooling system comprises a main converter circuit, a cooling system and a central control unit for controlling the operation of the main converter circuit and the cooling system;
the central control unit is used for executing the fault handling method of the wind turbine converter system according to any one of claims 1 to 7.
9. Wind power converter according to claim 8, characterized in that said central control unit comprises: the system comprises a communication module, an algorithm processing module and a peripheral function module; wherein:
the algorithm processing module is used for realizing at least one of parameter correction, torque correction, parameter calculation, torque reduction calculation and limited power calculation;
the peripheral function module is used for realizing at least one of parameter storage, state detection, upper communication program, DI/DO transmission and AI/AO transmission;
the communication module is used for realizing communication signal transmission between the algorithm processing module and/or the peripheral function module and external equipment.
10. The wind power converter according to claim 8 or 9, wherein the main converter circuit comprises: the device comprises a machine side converter module, a direct current bus and a network side converter module;
the alternating current side of the machine side converter module is connected with the wind generating set through the machine side reactor and the machine side switch in sequence;
the direct current side of the machine side converter module and the direct current side of the network side converter module are both connected with the direct current bus;
a corresponding braking unit is arranged between the positive electrode and the negative electrode of the direct current bus;
and the alternating current side of the grid side current transformation module is connected with a power grid through a grid side reactor and a grid side switch in sequence.
11. The wind power converter according to claim 8 or 9, wherein the heat dissipation system is a water cooling system.
12. A fan converter system, comprising: a wind power plant and at least one wind power converter according to any of claims 8 to 11 connected thereto; wherein:
the fan main control system of the wind generating set is in communication connection with the central control unit in the wind power converter;
the fan main control system is used for controlling the wind generating set to output power to the wind power converter and controlling the wind generating set to enter a shutdown mode according to the fault notification sent by the central control unit.
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| CN202110018515.4A CN112821387A (en) | 2021-01-07 | 2021-01-07 | Wind power converter, fan converter system and fault processing method thereof |
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| CN (1) | CN112821387A (en) |
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| CN113507218A (en) * | 2021-08-17 | 2021-10-15 | 阳光电源股份有限公司 | Wind power converter, wind power system and IGBT fault testing method |
| CN114184893A (en) * | 2021-12-09 | 2022-03-15 | 阳光电源股份有限公司 | Power electronic converter and fault management method and system thereof |
| CN115580174A (en) * | 2022-09-23 | 2023-01-06 | 深圳拓邦股份有限公司 | Fault control method for multiple fans and household appliance |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113507218A (en) * | 2021-08-17 | 2021-10-15 | 阳光电源股份有限公司 | Wind power converter, wind power system and IGBT fault testing method |
| CN114184893A (en) * | 2021-12-09 | 2022-03-15 | 阳光电源股份有限公司 | Power electronic converter and fault management method and system thereof |
| CN114184893B (en) * | 2021-12-09 | 2024-05-14 | 阳光电源股份有限公司 | Power electronic converter and fault management method and system thereof |
| CN115580174A (en) * | 2022-09-23 | 2023-01-06 | 深圳拓邦股份有限公司 | Fault control method for multiple fans and household appliance |
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