CN202798547U - Fan motor control device of doubly-fed asynchronous wind generating set - Google Patents
Fan motor control device of doubly-fed asynchronous wind generating set Download PDFInfo
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- CN202798547U CN202798547U CN 201220382199 CN201220382199U CN202798547U CN 202798547 U CN202798547 U CN 202798547U CN 201220382199 CN201220382199 CN 201220382199 CN 201220382199 U CN201220382199 U CN 201220382199U CN 202798547 U CN202798547 U CN 202798547U
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- cooling fan
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Abstract
The utility model relates to a fan motor control device of a doubly-fed asynchronous wind generating set. The fan motor control device of the doubly-fed asynchronous wind generating set comprises a first cooling fan motor (M1), a second cooling fan motor (M2) and a third cooling fan motor (M3). The fan motor control device is characterized in that a three-phase winding head of the first cooling fan motor (M1) is also connected with a three-phase wire inlet end of a first star contactor (K12C) and shortly connected with the three-phase wire outlet end of the star contactor (K12C) while a three-phase winding tail of the first cooling fan motor (M1) orderly passes through a first high-speed operation contactor (Q12BK) and a first high-speed operation breaker (Q12B) to be connected with a three-phase power supply. The fan motor control device disclosed by the utility model adopts dual-speed control; the motor of an air cooling device just enters a low-speed operation mode when the temperature of a generator just exceeds the start temperature, and the high-speed operation mode is started only when the temperature of an engine continues to ascend to the set temperature.
Description
Technical field
The utility model relates to a kind of fan electromotor control device of dual-feed asynchronous wind power generator group.
Background technology
Along with the development of wind generating technology, the wind turbine generator single-machine capacity constantly increases, to the also thereupon raising of performance requirement of unit.When the single unit capacity increases, the design of blower fan also will be considered more safety factor and miscellaneous function, such as the MWT100/2.5 type dual-feed asynchronous wind power generator group that my company produces, the separate unit rated capacity is 2500kW, and the rated capacity of generator is 2615kW.If the type of cooling of generator is designed to the form of armature spindle band paddle wheel fan, can not satisfy the cooling needs of generator unit stator and rotor far away.This just must add auxiliary cooling fan at the generator cooling ventilation duct, increases circulation of air speed, promotes heat radiation, gives stator and the rotor cooling of generator.
Cool off the type selecting that requires to carry out cooling fan according to the generator stator and rotor, design than being easier in general.On the traditional sense, to the control of cooling fan motor, be exactly the temperature sensor signal according to generator, by master control system to the collection of temperature data, judge the start and stop of controlling cooling fan motor.The environmental condition of running of wind generating set is generally all more abominable, the ambient temperature in summer in winter, and wind regime etc. have larger difference, and particularly when the critical wind velocity of startup of unit, constantly being incorporated into the power networks may appear in unit, the off-grid situation.Generator is repeatedly start-stop in a short time, and internal temperature can rise very fast, and cooling fan motor is thereupon oepration at full load also.If but same motor adopts double speed operation control, just can reduce cooling fan motor from power consumption.
If the motor that is used for air-cooling apparatus only has a kind of operational mode, so, even generator-temperature detection has just surpassed start-up temperature, the motor of air-cooling apparatus is with regard to high-speed cruising, in the unit interval through the air capacity that is used for exchange heat of piping, be far longer than actual needs, caused waste; Simultaneously, frequent start-stop for fear of motor, control system has generally all adopted stagnant ring, namely motor temperature only drop to the cut-off temperature more much lower than start-up temperature just can be out of service, caused the problems such as cooling system self power consumption is excessive, electrical machinery life shortening.
The utility model content
The purpose of this utility model provides a kind of fan electromotor control device of dual-feed asynchronous wind power generator group, can be with low speed and two kinds of mode operation at a high speed, thus energy efficient and prolong electrical machinery life.
A kind of fan electromotor control device of dual-feed asynchronous wind power generator group, comprise the first cooling fan motor, the second cooling fan motor and the 3rd cooling fan motor, the first cooling fan motor wherein, the three-phase winding head of the second cooling fan motor and the 3rd cooling fan motor is all successively by the low cruise contactor, the low cruise circuit breaker connects three phase mains, and the first cooling fan motor, three phase winding tails of the second cooling fan motor and the 3rd cooling fan motor connect three phase mains, its special feature is: wherein the three-phase winding head of the first cooling fan motor also connects the three-phase end of incoming cables of the first asterism contactor, and the three-phase leading-out terminal of this first asterism contactor is shorted together, and three phase winding tails of the first cooling fan motor are successively by the first high-speed cruising contactor, the first high-speed cruising circuit breaker connects three phase mains.
Wherein the three-phase winding head of the second cooling fan motor also connects the three-phase end of incoming cables of the second asterism contactor, and the three-phase leading-out terminal of this second asterism contactor is shorted together, and three phase winding tails of the second cooling fan motor connect three phase mains by the second high-speed cruising contactor, the second high-speed cruising circuit breaker successively.
Wherein the three-phase winding head of the 3rd cooling fan motor also connects the three-phase end of incoming cables of Samsung point-contactor, and the three-phase leading-out terminal of this Samsung point-contactor is shorted together, and three phase winding tails of the 3rd cooling fan motor connect three phase mains by third high speed operation contactor, third high speed operating circuit breaker successively.
Fan electromotor control device of the present utility model adopts double speed control, when generator-temperature detection has just surpassed start-up temperature, the motor of air-cooling apparatus only enters low-speed operation mode, only have the heat that comes out when engine, in the situation of current circulation of air speed, can not effectively dispel the heat far away, when engine temperature continues to rise to design temperature, just can start the high-speed cruising pattern, thereby increase rate of air circulation, at full speed heat radiation.Therefore can energy efficient and prolong electrical machinery life.
Description of drawings
Accompanying drawing 1 is electrical schematic diagram of the present utility model, and wherein L1, L2, L3 represent 3 phase 690VAC, and PEM represents ground connection.
Embodiment
As shown in Figure 1, the utility model is a kind of fan electromotor control device of dual-feed asynchronous wind power generator group, comprise the first cooling fan motor M1, the second cooling fan motor M2 and the 3rd cooling fan motor M3, the first cooling fan motor M1 wherein, the three-phase winding head of the second cooling fan motor M2 and the 3rd cooling fan motor M3 is all successively by three low cruise contactor Q12AK, Q13AK, Q14AK, with three low cruise circuit breaker Q 12A, Q13A, Q14A connects three phase mains, and the first cooling fan motor M1, the three phase winding tails of the second cooling fan motor M2 and the 3rd cooling fan motor M3 also connect three phase mains, wherein the three-phase winding head of the first cooling fan motor M1 also connects the three-phase end of incoming cables of the first asterism contactor K12C, and the three-phase leading-out terminal of this first asterism contactor K12C is shorted together, and the three phase winding tails of the first cooling fan motor M1 are successively by the first high-speed cruising contactor Q12BK, the first high-speed cruising circuit breaker Q 12B connects three phase mains.
Wherein the three-phase winding head of the second cooling fan motor M2 also connects the three-phase end of incoming cables of the second asterism contactor K13C, and the three-phase leading-out terminal of this second asterism contactor K13C is shorted together, and the three phase winding tails of the second cooling fan motor M2 connect three phase mains by the second high-speed cruising contactor Q13BK, the second high-speed cruising circuit breaker Q 13B successively.
Wherein the three-phase winding head of the 3rd cooling fan motor M3 also connects the three-phase end of incoming cables of Samsung point-contactor K14C, and the three-phase leading-out terminal of this Samsung point-contactor K14C is shorted together, and the three phase winding tails of the 3rd cooling fan motor M3 connect three phase mains by third high speed operation contactor Q14BK, third high speed operating circuit breaker Q14B successively.
Adopt can reduce behind the control device of the present utility model three cooling fan motors from power consumption, for example be set in the generator unit stator temperature more than 85 ℃, below 120 ℃ and dynamo bearing temperature motor low cruise more than 65 ℃, below 80 ℃ the time, in the generator unit stator temperature more than 120 ℃ and dynamo bearing temperature high speed operation of motor more than 80 ℃ the time.The different stages is adopted different operational modes, with respect to motor single speed running and comparing economy, also safety and reliability.
Claims (3)
1. the fan electromotor control device of a dual-feed asynchronous wind power generator group, comprise the first cooling fan motor (M1), the second cooling fan motor (M2) and the 3rd cooling fan motor (M3), the first cooling fan motor (M1) wherein, the three-phase winding head of the second cooling fan motor (M2) and the 3rd cooling fan motor (M3) is all successively by the low cruise contactor, the low cruise circuit breaker connects three phase mains, and the first cooling fan motor (M1), three phase winding tails of the second cooling fan motor (M2) and the 3rd cooling fan motor (M3) connect three phase mains, it is characterized in that: wherein the three-phase winding head of the first cooling fan motor (M1) also connects the three-phase end of incoming cables of the first asterism contactor (K12C), and the three-phase leading-out terminal of this first asterism contactor (K12C) is shorted together, and three phase winding tails of the first cooling fan motor (M1) are successively by the first high-speed cruising contactor (Q12BK), the first high-speed cruising circuit breaker (Q12B) connects three phase mains.
2. the fan electromotor control device of a kind of dual-feed asynchronous wind power generator group as claimed in claim 1, it is characterized in that: wherein the three-phase winding head of the second cooling fan motor (M2) also connects the three-phase end of incoming cables of the second asterism contactor (K13C), and the three-phase leading-out terminal of this second asterism contactor (K13C) is shorted together, and three phase winding tails of the second cooling fan motor (M2) connect three phase mains by the second high-speed cruising contactor (Q13BK), the second high-speed cruising circuit breaker (Q13B) successively.
3. the fan electromotor control device of a kind of dual-feed asynchronous wind power generator group as claimed in claim 1 or 2, it is characterized in that: wherein the three-phase winding head of the 3rd cooling fan motor (M3) also connects the three-phase end of incoming cables of Samsung point-contactor (K14C), and the three-phase leading-out terminal of this Samsung point-contactor (K14C) is shorted together, and three phase winding tails of the 3rd cooling fan motor (M3) connect three phase mains by third high speed operation contactor (Q14BK), third high speed operating circuit breaker (Q14B) successively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220382199 CN202798547U (en) | 2012-08-03 | 2012-08-03 | Fan motor control device of doubly-fed asynchronous wind generating set |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220382199 CN202798547U (en) | 2012-08-03 | 2012-08-03 | Fan motor control device of doubly-fed asynchronous wind generating set |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202798547U true CN202798547U (en) | 2013-03-13 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220382199 Expired - Lifetime CN202798547U (en) | 2012-08-03 | 2012-08-03 | Fan motor control device of doubly-fed asynchronous wind generating set |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202798547U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111828282A (en) * | 2020-06-24 | 2020-10-27 | 包头钢铁（集团）有限责任公司 | Starting operation method of air compressor in severe cold environment |
-
2012
- 2012-08-03 CN CN 201220382199 patent/CN202798547U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111828282A (en) * | 2020-06-24 | 2020-10-27 | 包头钢铁（集团）有限责任公司 | Starting operation method of air compressor in severe cold environment |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130313 |
|
| CX01 | Expiry of patent term |