CN211044030U - Temperature control system of wind power converter - Google Patents
Temperature control system of wind power converter Download PDFInfo
- Publication number
- CN211044030U CN211044030U CN201921613562.8U CN201921613562U CN211044030U CN 211044030 U CN211044030 U CN 211044030U CN 201921613562 U CN201921613562 U CN 201921613562U CN 211044030 U CN211044030 U CN 211044030U
- Authority
- CN
- China
- Prior art keywords
- temperature
- information processing
- processing device
- cabinet body
- humidity
- 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.)
- Active
Links
Images
Abstract
The application discloses a temperature control system of a wind power converter, which comprises a temperature detection device, an information processing device and a heating device; the temperature detection device is arranged in a cabinet body of the wind power converter and used for detecting the temperature in the cabinet body, acquiring temperature information and sending the temperature information to the information processing device; the information processing device is electrically connected with the temperature detection device and used for receiving the temperature information detected and sent by the temperature detection device, comparing the temperature information with a preset temperature value to obtain a first comparison result, and outputting a first control instruction according to the first comparison result to control the heating device to start; the heating device is connected with the information processing device in a controlled mode and used for receiving a first control instruction output by the information processing device and starting heating operation. The utility model discloses a set up temperature-detecting device and come the internal temperature of real-time detection cabinet at the cabinet body, when being less than the predetermined temperature, just start heating device and improve the internal temperature of cabinet, guaranteed the normal operating of the internal equipment of cabinet.
Description
Technical Field
The utility model relates to a power electronics field, in particular to temperature control system of wind-powered electricity generation converter.
Background
The wind driven generator often faces the threat of severe weather environment in operation, such as high altitude, extreme high temperature, low temperature, high humidity and condensation, and the converter is used as a key core component of the wind driven generator set and needs to have the capability of resisting severe operation environment in order to ensure the operation reliability. However, the conventional wind power converter cannot normally operate in a severe weather environment, for example, cannot normally operate in high altitude, extreme high temperature, low temperature, high humidity, condensation and the like, and therefore, the power generation efficiency of the wind driven generator is affected.
SUMMERY OF THE UTILITY MODEL
The application provides a humidity control system of a wind power converter, which is used for solving the technical problem that the wind power converter in the prior art cannot normally run under a severe running environment.
In order to solve the technical problem, the embodiment of the application adopts the following technical scheme: a temperature control system of a wind power converter comprises: a temperature detection device, an information processing device, and a heating device;
the temperature detection device is arranged in a cabinet body of the wind power converter and used for detecting the temperature in the cabinet body, acquiring temperature information and sending the temperature information to the information processing device;
the information processing device is electrically connected with the temperature detection device and is used for receiving the temperature information detected and sent by the temperature detection device, comparing the temperature information with a preset temperature value to obtain a first comparison result, and outputting a first control instruction according to the first comparison result to control the heating device to be started or closed;
the heating device is connected with the information processing device in a controlled mode and used for receiving a first control instruction output by the information processing device and starting heating operation to heat the interior of the cabinet body.
Optionally, the system further includes a humidity detection device, the humidity detection device is disposed in the cabinet body, and the humidity detection device is electrically connected to the information processing device, and is configured to detect humidity in the cabinet body and send the humidity information to the information processing device;
the information processing device is further used for receiving the humidity information, comparing the humidity information with a preset humidity value to obtain a second comparison result, and outputting a first control instruction according to the comparison result to control the heating device to be started or closed.
Optionally, the system further comprises an air flow adjusting device arranged on the side wall of the cabinet body, and the air flow adjusting device is connected with the information processing device in a controlled manner;
the information processing device is also used for outputting a second control instruction to the air flow adjusting device according to the second comparison result;
and the air flow adjusting device is used for receiving a second control instruction output by the information processing device and starting or closing air flow adjusting operation.
Optionally, the temperature detection device includes a first temperature sensor, a second temperature sensor and a third temperature sensor
The first temperature sensor is arranged in the cabinet body and used for detecting the ambient temperature in the cabinet body;
the second temperature sensor is arranged on a water cooling plate of the power electronic equipment in the cabinet body or in a wiring groove in the cabinet body and used for detecting the temperature of the power electronic equipment;
the third temperature sensor is arranged on the pipe wall of the cooling water pipeline in the cabinet body and used for detecting the temperature of the cooling water;
the first temperature sensor, the second temperature sensor and the third temperature sensor are respectively electrically connected with the information processing device and used for sending the detected temperature information to the information processing device.
Optionally, the humidity detection device includes: and each humidity sensor is electrically connected with the information processing device and is used for sending the detected humidity information to the information processing device.
Optionally, the heating device includes a first electric heater for adjusting the ambient temperature in the cabinet body, and the first electric heater is disposed on the inner wall of the cabinet body.
Optionally, the airflow adjusting device comprises an axial fan.
Optionally, the heating device further comprises a second electric heater, and the second electric heater is used for heating the water in the cooling water pipeline;
the cooling water pipeline is also connected with a heat dissipation device.
Optionally, the system further includes a timing device, electrically connected to the information processing device, and configured to time the operating time of the heating device, obtain a timing time, and output the timing time to the information processing device;
the information processing device is also used for comparing the timing time with a preset time value, comparing the detected current environmental temperature or humidity with a preset value to obtain a comparison result, and outputting a third control instruction according to the comparison result so as to control the standby second heating device to be started or closed; wherein the second heating device is in controlled connection with the information processing device.
Optionally, the cabinet body is further provided with a vent, and a valve cover for plugging the vent is arranged at the position corresponding to the vent;
the axial fan is arranged on the inner wall of the cabinet body and corresponds to the ventilation opening.
The beneficial effects of the embodiment of the application are that: the internal temperature of cabinet can real-time detection through the internal temperature-detecting device that sets up at wind power converter's cabinet, then utilize information processing apparatus to compare the temperature that detects with preset temperature value, when being less than preset temperature value, just start heating device and heat, improve the internal temperature of cabinet to guarantee the normal operating of the internal equipment of cabinet.
Drawings
Fig. 1 is a block diagram of a temperature control system of a wind power converter according to an embodiment of the present invention;
fig. 2 is a schematic diagram of a temperature control system of a wind power converter according to an embodiment of the present invention;
fig. 3 is the utility model discloses wind power converter's temperature control system work flow chart.
Detailed Description
Various aspects and features of the present application are described herein with reference to the drawings.
It will be understood that various modifications may be made to the embodiments of the present application. Accordingly, the foregoing description should not be construed as limiting, but merely as exemplifications of embodiments. Those skilled in the art will envision other modifications within the scope and spirit of the application.
The accompanying drawings, which are incorporated in and constitute a part of the specification, illustrate embodiments of the application and, together with a general description of the application given above and the detailed description of the embodiments given below, serve to explain the principles of the application.
These and other characteristics of the present application will become apparent from the following description of preferred forms of embodiment, given as non-limiting examples, with reference to the attached drawings.
It should also be understood that, although the present application has been described with reference to some specific examples, a person of skill in the art shall certainly be able to achieve many other equivalent forms of application, having the characteristics as set forth in the claims and hence all coming within the field of protection defined thereby.
The above and other aspects, features and advantages of the present application will become more apparent in view of the following detailed description when taken in conjunction with the accompanying drawings.
Specific embodiments of the present application are described hereinafter with reference to the accompanying drawings; however, it is to be understood that the disclosed embodiments are merely exemplary of the application, which can be embodied in various forms. Well-known and/or repeated functions and constructions are not described in detail to avoid obscuring the application of unnecessary or unnecessary detail. Therefore, specific structural and functional details disclosed herein are not to be interpreted as limiting, but merely as a basis for the claims and as a representative basis for teaching one skilled in the art to variously employ the present application in virtually any appropriately detailed structure.
The specification may use the phrases "in one embodiment," "in another embodiment," "in yet another embodiment," or "in other embodiments," which may each refer to one or more of the same or different embodiments in accordance with the application.
The embodiment of the utility model provides a temperature control system of wind power converter, include: a temperature detection device 1, an information processing device 2, and a heating device 3;
the temperature detection device 1 is arranged in a cabinet body of the wind power converter and used for detecting the temperature in the cabinet body, acquiring temperature information and sending the temperature information to the information processing device;
the information processing device 2 is electrically connected with the temperature detection device and is used for receiving the temperature information detected and sent by the temperature detection device, comparing the temperature information with a preset temperature value to obtain a first comparison result, and outputting a first control instruction according to the first comparison result to control the heating device to be started or closed;
the heating device 3 is in controlled connection with the information processing device and is used for receiving a first control instruction output by the information processing device and starting heating operation to heat the interior of the cabinet body.
The embodiment of the utility model provides a through the internal temperature that sets up temperature-detecting device can real-time detection cabinet at wind power converter's cabinet, then utilize information processing apparatus to compare the temperature that detects with predetermined temperature value, when being less than predetermined temperature value, just start heating device and heat, improve the internal temperature of cabinet, even also can guarantee the normal operating of the internal equipment of cabinet under abominable environment.
The utility model discloses another embodiment provides a temperature control system of wind power converter, include: the temperature detection device, the information processing device, the heating device, the humidity detection device and the air flow adjusting device;
the temperature detection device is arranged in a cabinet body of the wind power converter and used for detecting the temperature in the cabinet body, acquiring temperature information and sending the temperature information to the information processing device;
the humidity detection device is arranged in the cabinet body, is electrically connected with the information processing device, and is used for detecting the humidity in the cabinet body and sending the humidity information to the information processing device;
the information processing device is electrically connected with the temperature detection device and the humidity detection device respectively, and is used for receiving the temperature information sent by the temperature detection device and the humidity information sent by the humidity detection device, comparing the temperature information with a preset temperature value to obtain a first comparison result, and outputting a first control instruction according to the first comparison result to control the heating device to be started or closed; and comparing the humidity information with a preset humidity value to obtain a second comparison result, and outputting a first control instruction according to the comparison result to control the heating device to be started or closed.
The heating device is connected with the information processing device in a controlled mode and used for receiving a first control instruction output by the information processing device and starting heating operation to heat the interior of the cabinet body.
The air flow adjusting device is arranged on the side wall in the cabinet body, is in controlled connection with the information processing device and is used for receiving a second control instruction output by the information processing device and starting or closing air flow adjusting operation.
As shown in fig. 2, in the implementation process of the present embodiment, the temperature detecting device includes a first temperature sensor 11, a second temperature sensor 12, and a third temperature sensor 13; and the first temperature sensor, the second temperature sensor and the third temperature sensor can be respectively provided with a plurality of temperature sensors according to the requirement. The first temperature sensor 11 is arranged in the cabinet body and used for detecting the ambient temperature in the cabinet body. The second temperature sensor 12 is disposed on a water cooling plate of the power electronic device in the cabinet body, or disposed in a wiring groove in the cabinet, and is configured to detect a temperature of the power electronic device. The third temperature sensor 13 is arranged on the wall of the cooling water inlet pipe in the cabinet body and used for detecting the temperature of the cooling water. The first temperature sensor, the second temperature sensor and the third temperature sensor are respectively electrically connected with the information processing device and used for sending the detected temperature information to the information processing device. Specifically, the temperature sensors are pt100 or NTC resistors and distributed in the space of the converter cabinet, a wiring groove, a cooling water inlet pipe and a power electronic water cooling plate, the ambient temperature, the temperature of the wiring groove and the cooling water inlet temperature in the converter cabinet can be detected in real time, the measuring range can reach at least-40-200 ℃, and output signals of the temperature sensors are resistance values and change along with temperature changes (each sensor has a fixed resistance value-temperature characteristic table).
In a specific implementation process, the humidity detection device may include a plurality of humidity sensors 31, and each humidity sensor is electrically connected to the information processing device, and is configured to send detected humidity information to the information processing device. The humidity sensor adopts an integrated IC sensor, is distributed in the space of the converter cabinet, can detect the ambient humidity in the converter cabinet in real time, has a measuring range of 0-100% RH, outputs a signal in the form of an electric quantity signal, and changes a signal value along with the change of the humidity.
The embodiment of the utility model provides an in, be provided with cooling water pipeline in the converter, there is the cooling water pipeline the inside, when the internal temperature of cabinet is normal, when equipment can normal operating, utilize the cooling water to dispel the heat to converter equipment, it is lower when the temperature that detects, when being less than the default, then start heating device and start first heater and/or second heater promptly, come the internal ambient temperature of cabinet to and the water in the internal cooling water pipe of cabinet heats, come the internal temperature of high cabinet with this, guarantee the normal operating of converter equipment. The heating device may be turned off when the temperature is above a preset value. When the humidity is detected to be high, the heating device and the airflow adjusting device are started no matter what the temperature value is, and the heat can circularly flow in the cabinet body by starting the axial flow fan, so that the dehumidification operation is realized; when the humidity is detected to be lower than the preset value, the heating device and the air flow adjusting device can be closed.
In this embodiment, the information processing apparatus specifically includes: the circuit comprises a sampling circuit, a signal amplifying circuit, an analog-to-digital conversion circuit, a program operation circuit and an output circuit. The sampling circuit receives non-electric quantity signals of the temperature sensors, the non-electric quantity signals are converted into electric quantity (voltage) through the high-precision sampling device, the electric quantity (including the humidity sensor) signals can improve the identifiability and the anti-interference capability through the amplifying circuit, the amplifying circuit is composed of integrated operational amplifiers, the amplifying proportion can be set, and the temperature and the humidity can generate one-to-one correspondence with the electric quantity (voltage) through the sampling and amplifying circuit. The program operation circuit is composed of a Digital Signal Processor (DSP), a program is internally provided with resistance-temperature characteristic tables of various sensors and dew point tables corresponding to temperature and humidity, a series of threshold voltages for comparison are set, when the corresponding sampling voltage of the temperature and humidity sensor exceeds the threshold voltage, the corresponding circuit is driven and output to act, and the output circuit is composed of a relay and can output IO control signals outwards. When any one of the temperatures (ambient temperature) of the first temperature sensors 11 is less than 0 ℃ or the temperature (cooling water temperature) of the second temperature sensor 12 is less than-5 ℃, the heating process is started, namely the heating device is started until the temperatures detected by the first temperature sensor and the second temperature sensor are both more than 5 ℃, and the heating is stopped. When any humidity of the humidity sensors is greater than 85% RH, or the temperature value of the third temperature sensor 13 and the values of the first temperature sensor, the second temperature sensor and the humidity sensors conform to the values in table 1, starting a dehumidification process, namely simultaneously starting the heating device and the airflow adjusting device until the humidity of each humidity sensor is less than 80%, or the temperature value of the third temperature sensor 13, the temperature value of the second temperature sensor 12, the temperature value of the first temperature sensor 11 and the humidity value of the humidity sensor are higher than the temperature in table 1, stopping the heating device and stopping the axial flow fan. The resistance-temperature characteristics of the temperature and humidity sensor and table 1 are fitted to the program. When the heating or dehumidifying process is started, the program operation circuit starts to time, the standby heater is started to assist in heating the operating environment when the shutdown condition cannot be reached within a preset time (for example, 45min), and if the shutdown condition cannot be reached within the preset time (for example, 30min), the system reports a fault and performs derating operation or shutdown processing.
Table 1 (condensation point table for temperature and humidity):
the temperature control system of the wind power converter of the embodiment further comprises an electric control device, and the signal processing device is electrically connected with the electric control device. The signal processing device controls the heating device and the ventilation device to be started and stopped by controlling the electric control device. The specific electrical control device includes: alternating current power supply, AC/DC power supply, control appliances (relays), circuit protection appliances (circuit breakers, fuses, etc.), distribution lines, and the like. The AC/DC power supply required by the whole system is provided for working, the load power is distributed and carried, and the overload or overcurrent protection is carried out on the circuit.
Specifically, in this embodiment, the heating device includes a first electric heater for adjusting the ambient temperature in the cabinet, and the first electric heater is disposed on the inner wall of the cabinet. The first electric heater can be a PTC electric heater, and the PTC electric heater is used for heating the environment temperature in the cabinet body.
The airflow adjusting device in this embodiment includes an axial fan. The heating device also comprises a second electric heater which is used for heating the water in the cooling water pipeline. The cooling water pipeline is also connected with a heat dissipation device. The second electric heater can be a PTC electric heater, the PTC electric heater is used for heating circulating water in the hot water pipeline, then heat is dissipated into the cabinet body through the heat dissipation device, and the flowing speed of air in the cabinet body is increased by combining with the axial flow fan, so that dehumidification operation is performed in the cabinet body.
Preferably, in this implementation, a vent hole may be further disposed on the side wall of the cabinet body, and a valve cover for plugging the vent hole is disposed at a position corresponding to the vent hole; the axial flow fan may be disposed on an inner wall of the cabinet body at a position corresponding to the vent. When the temperature in the cabinet body is higher, the ventilation opening can be opened, and the axial flow fan is started to ventilate and radiate the cabinet body. When the temperature in the cabinet body is lower, the valve cover can be closed to prevent the heat in the cabinet body from being dissipated.
In the embodiment of the present invention, the temperature control system of the wind power converter further includes a timing device, the timing device is electrically connected to the information processing device, and is configured to time the operating time of the heating device, obtain the timing time, and output the timing time to the information processing device;
the information processing device is also used for comparing the timing time with a preset time value, comparing the detected current environmental temperature or humidity with a preset value to obtain a comparison result, and outputting a third control instruction according to the comparison result so as to control the standby second heating device to be started or closed; wherein the second heating device is in controlled connection with the information processing device.
With reference to fig. 3, the working process of the temperature control system of the wind power converter in the embodiment of the present invention is as follows:
step one, timing the working time of the heating device by using a timing device.
Step two, comparing the working time of the heating device with a preset time value, and judging whether the preset time value is reached; if the preset time value is reached, executing a step three; if the preset time value is not reached, the timing device is continuously utilized to continue timing.
Judging whether the current environment temperature or the environment humidity meets a preset threshold value; if the temperature is met, the heating device is closed, and heating or dehumidification is stopped; if not, executing step four.
And step four, starting a standby second heating device to heat or dehumidify.
In this embodiment, after the heating or dehumidifying process is started, the timing device starts timing, and the standby heater is started to assist in heating the operating environment when the shutdown condition cannot be reached within a preset time (e.g., 45 min). If the shut down condition is not met within a predetermined time (e.g., 30min), the system will report a fault and perform derating or shutdown.
The embodiment of the utility model provides a come the internal temperature of real-time detection cabinet and humidity through setting up temperature sensor and humidity transducer, then start heating device and air current adjusting device according to the testing result, can effectively improve wind power converter temperature and humidity in the cabinet, guarantee that wind power converter operates under the most suitable humiture environment.
The above embodiments are only exemplary embodiments of the present application, and are not intended to limit the present application, and the protection scope of the present application is defined by the claims. Various modifications and equivalents may be made by those skilled in the art within the spirit and scope of the present application and such modifications and equivalents should also be considered to be within the scope of the present application.
Claims (9)
1. A temperature control system of a wind power converter is characterized by comprising: a temperature detection device, an information processing device, and a heating device;
the temperature detection device is arranged in a cabinet body of the wind power converter and used for detecting the temperature in the cabinet body, acquiring temperature information and sending the temperature information to the information processing device;
the information processing device is electrically connected with the temperature detection device and is used for receiving the temperature information detected and sent by the temperature detection device, comparing the temperature information with a preset temperature value to obtain a first comparison result, and outputting a first control instruction according to the first comparison result to control the heating device to be started or closed;
the heating device is in controlled connection with the information processing device and is used for receiving a first control instruction output by the information processing device and starting heating operation to heat the cabinet body;
the system also comprises a timing device which is electrically connected with the information processing device and used for timing the working time of the heating device, obtaining the timing time and outputting the timing time to the information processing device;
the information processing device is also used for comparing the timing time with a preset time value, comparing the detected current environmental temperature or humidity with a preset value to obtain a comparison result, and outputting a third control instruction according to the comparison result so as to control the standby second heating device to be started or closed; wherein the second heating device is in controlled connection with the information processing device.
2. The system of claim 1, further comprising a humidity detection device disposed in the cabinet body and electrically connected to the information processing device for detecting humidity in the cabinet body and sending humidity information to the information processing device;
the information processing device is further used for receiving the humidity information, comparing the humidity information with a preset humidity value to obtain a second comparison result, and outputting a first control instruction according to the comparison result to control the heating device to be started or closed.
3. The system of claim 2, further comprising an air flow regulating device disposed on a side wall of the cabinet, the air flow regulating device being in controlled connection with the information processing device;
the information processing device is also used for outputting a second control instruction to the air flow adjusting device according to the second comparison result;
and the air flow adjusting device is used for receiving a second control instruction output by the information processing device and starting or closing air flow adjusting operation.
4. The system of claim 1, wherein the temperature sensing device comprises a first temperature sensor, a second temperature sensor, and a third temperature sensor;
the first temperature sensor is arranged in the cabinet body and used for detecting the ambient temperature in the cabinet body;
the second temperature sensor is arranged on a water cooling plate of the power electronic equipment in the cabinet body or in a wiring groove in the cabinet body and used for detecting the temperature of the power electronic equipment;
the third temperature sensor is arranged on the pipe wall of the cooling water pipeline in the cabinet body and used for detecting the temperature of the cooling water;
the first temperature sensor, the second temperature sensor and the third temperature sensor are respectively electrically connected with the information processing device and used for sending the detected temperature information to the information processing device.
5. The system of claim 2, wherein the humidity detection means comprises: and each humidity sensor is electrically connected with the information processing device and is used for sending the detected humidity information to the information processing device.
6. The system according to claim 1, characterized in that said heating means comprise a first electric heater for regulating the ambient temperature inside the cabinet, said first electric heater being arranged on an inner wall of said cabinet.
7. The system of claim 3, wherein the airflow conditioning device comprises an axial fan.
8. The system of claim 4, wherein the heating device further comprises a second electric heater for heating the water in the cooling water conduit;
the cooling water pipeline is connected with a heat radiator.
9. The system as claimed in claim 7, wherein the cabinet body is further provided with a vent, and a valve cover for sealing the vent is arranged at the position corresponding to the vent;
the axial fan is arranged on the inner wall of the cabinet body and corresponds to the ventilation opening.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921613562.8U CN211044030U (en) | 2019-09-25 | 2019-09-25 | Temperature control system of wind power converter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921613562.8U CN211044030U (en) | 2019-09-25 | 2019-09-25 | Temperature control system of wind power converter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211044030U true CN211044030U (en) | 2020-07-17 |
Family
ID=71532663
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921613562.8U Active CN211044030U (en) | 2019-09-25 | 2019-09-25 | Temperature control system of wind power converter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211044030U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110515404A (en) * | 2019-09-25 | 2019-11-29 | 国电龙源电气有限公司 | A kind of temperature control system of wind electric converter |
-
2019
- 2019-09-25 CN CN201921613562.8U patent/CN211044030U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110515404A (en) * | 2019-09-25 | 2019-11-29 | 国电龙源电气有限公司 | A kind of temperature control system of wind electric converter |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN204827816U (en) | Wind generating set cabin heat abstractor | |
| CN211044030U (en) | Temperature control system of wind power converter | |
| CA2888760A1 (en) | Humidifier control system | |
| CN203911293U (en) | Ventilation heat radiating device of low-voltage whole-set equipment | |
| CN111290444A (en) | Heating and dehumidifying system of converter and control method thereof | |
| CN106992565B (en) | Constant-current discharging device for storage battery | |
| US20070193288A1 (en) | Device for saving power consumption of heating and air conditioning system | |
| CN203932973U (en) | Earth leakage protective device | |
| CN207581084U (en) | Elevator control system and elevator control cabinet | |
| CN203133642U (en) | Novel ring network cabinet | |
| CN214479595U (en) | Constant-temperature depth current limiting device | |
| CN106786046B (en) | A kind of low temp compensating control method of electrical cabinet | |
| CN108110732A (en) | AC blower fan driving device and air conditioner | |
| CN204141641U (en) | Electricity cooking pot and controller for heat sink thereof | |
| US20170184074A1 (en) | Wind Turbine Pitch Cabinet Temperature Control System | |
| CN110398049B (en) | Air conditioner control method, air conditioner and computer readable storage medium | |
| CN108695797B (en) | Direct-current wall bushing protection device and method | |
| CN104114012B (en) | Control cabinet suitable for outdoor application of general frequency converter, and control method thereof | |
| CN203835770U (en) | Exhaust fan for automatically adjusting difference of indoor and outer temperatures | |
| CN208873061U (en) | Switchgear house switchgear temperature and humidity control system | |
| CN212969420U (en) | Electric energy conversion system | |
| CN110515404A (en) | A kind of temperature control system of wind electric converter | |
| CN206439983U (en) | Electrical heating ventilation terminal automatic control system | |
| CN110850785B (en) | Over-temperature protection control method for electric fire box | |
| CN103034269B (en) | Temperature and humidity control device used for low temperature plateau type wind turbine generator variable pitch system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 100039 17th floor, building 1, yard 16, West Fourth Ring Middle Road, Haidian District, Beijing Patentee after: Guoneng Longyuan Electric Co.,Ltd. Address before: 100039 17th floor, building 1, yard 16, West Fourth Ring Middle Road, Haidian District, Beijing Patentee before: GUODIAN LONGYUAN ELECTRICAL Co.,Ltd. |