WO2020125543A1 - 一种大功率风力发电机组变流器温度控制系统 - Google Patents

一种大功率风力发电机组变流器温度控制系统 Download PDF

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Publication number
WO2020125543A1
WO2020125543A1 PCT/CN2019/124943 CN2019124943W WO2020125543A1 WO 2020125543 A1 WO2020125543 A1 WO 2020125543A1 CN 2019124943 W CN2019124943 W CN 2019124943W WO 2020125543 A1 WO2020125543 A1 WO 2020125543A1
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Prior art keywords
converter
air
temperature
pressure control
temperature control
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PCT/CN2019/124943
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English (en)
French (fr)
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焦守雷
张国伟
陈耀
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山东中车风电有限公司
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Publication of WO2020125543A1 publication Critical patent/WO2020125543A1/zh

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    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K7/00—Constructional details common to different types of electric apparatus
    • H05K7/20—Modifications to facilitate cooling, ventilating, or heating
    • H05K7/20009—Modifications to facilitate cooling, ventilating, or heating using a gaseous coolant in electronic enclosures
    • H05K7/20136—Forced ventilation, e.g. by fans
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
    • H02M1/00—Details of apparatus for conversion
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K7/00—Constructional details common to different types of electric apparatus
    • H05K7/20—Modifications to facilitate cooling, ventilating, or heating
    • H05K7/20009—Modifications to facilitate cooling, ventilating, or heating using a gaseous coolant in electronic enclosures
    • H05K7/20136—Forced ventilation, e.g. by fans
    • H05K7/20145—Means for directing air flow, e.g. ducts, deflectors, plenum or guides
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K7/00—Constructional details common to different types of electric apparatus
    • H05K7/20—Modifications to facilitate cooling, ventilating, or heating
    • H05K7/20009—Modifications to facilitate cooling, ventilating, or heating using a gaseous coolant in electronic enclosures
    • H05K7/20209—Thermal management, e.g. fan control
    • 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
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00—Energy generation through renewable energy sources
    • Y02E10/70—Wind energy
    • Y02E10/76—Power conversion electric or electronic aspects

Definitions

  • the present disclosure belongs to the technical field of wind power generation, and particularly relates to a converter temperature control system of a high-power wind power generator set.
  • High-power fan converters are generally installed at the bottom of the tower, using hydraulic water cooling, which has a good cooling effect.
  • the sealing requirements are very high. Leakage will cause corrosion and pollution to its own system and fan components, as well as pollution to the environment, and the installation and maintenance of hydraulic water cooling systems are quite complicated, and the cost of procurement and maintenance is high.
  • the converter adopts self-cooling cooling method
  • the heat generated by the high-power converter is dissipated inside the tower and exchanges heat with the air inside the tower to achieve the heat dissipation effect, but in a high temperature environment, it is especially full load for a long time
  • heat is re-inhaled into the converter, which leads to a reduction in the life and reliability of the electrical components in the cabinet
  • the relay performs protective actions, causing the entire generator set to shut down accordingly. Because such faults often occur under the condition of large power generation, shutdown at this time will cause a large loss of power generation and economic losses to the owner.
  • the present disclosure provides a high-power wind turbine converter temperature control system.
  • This system uses a pressure control device under the premise that the tower space is relatively closed, so that low pressure is generated in the tower Environment, the forced converter absorbs the outside air for cooling, and realizes the temperature control of the converter and the tower through reasonable exhaust pipes and heat concentration devices, which effectively solves the problem of insufficient ventilation of the converter, heat dissipation, heat re-inhalation, etc.
  • the temperature protection relay effectively guarantee the temperature environment of the converter and ensure the normal operation of the fan unit.
  • a temperature control system for a high-power wind turbine converter including:
  • a pressure control module located outside the tower, connected to the other end of the ventilation pipeline;
  • a sealing element is provided at the connection of each part of the temperature control system.
  • the wind collection module includes a centrifugal fan and a wind collection pipe.
  • the pressure control module When the pressure control module is in operation, the air in the converter is sucked to the wind collection pipe by the centrifugal fan.
  • the pressure control module includes a centrifugal fan.
  • the pressure control module works, the air in the pipeline is discharged through the centrifugal fan.
  • One or more embodiments provide a temperature control system for a high-power wind turbine converter, including a controller, a temperature probe for detecting the internal ambient temperature of the converter, and a temperature control subsystem; wherein,
  • the temperature control subsystem includes: one or more wind collection modules and heat collection modules provided inside the converter, the one or more wind collection modules are connected to one end of the ventilation pipe via the heat collection module;
  • the pressure control module outside the cylinder is connected to the other end of the ventilation pipeline;
  • the controller is connected with a temperature probe and a pressure control module
  • the controller receives the temperature data transmitted by the temperature probe, and when the temperature exceeds a preset value, controls the pressure control module to start, based on the principle of pressure balance, the external air enters the converter through the air inlet window on the tower door, The air inside the converter enters the temperature control system from the air collection module and is discharged through the pressure control module.
  • the cooling cycle in the converter when the temperature in the tower exceeds a preset value when the temperature in the tower exceeds the preset value is simulated by finite element simulation software to obtain the most suitable air volume to control the suction intensity of the pressure control system .
  • a sealing element is provided at the connection of each part of the temperature control subsystem.
  • the wind collection module includes a centrifugal fan and a wind collection pipe.
  • the pressure control module When the pressure control module is in operation, the air in the converter is sucked to the wind collection pipe by the centrifugal fan.
  • the pressure control module includes a centrifugal fan.
  • the pressure control module works, the air in the pipeline is discharged through the centrifugal fan.
  • the temperature control system of the present disclosure adopts internal and external air exchange methods to dissipate heat to the converter, and uses pressure control equipment to input the converter with dry and cold air.
  • the temperature control of the converter is achieved through reasonable layout and pipeline connection. And effectively reduce the heat accumulation of electrical components after heat dissipation, there is no overall or partial overheating, to ensure the normal operation of electrical components.
  • the present disclosure combines the data of the temperature probe in the converter to realize automatic control of the ambient temperature in the converter, ensure that the ambient temperature in the converter is within a reasonable range, increase the service life of electrical components, and ensure the safety of the entire unit normal operation.
  • the present disclosure solves the problem of the difficulty of outside air entering the inside of the tower under the leeward conditions of the unit, realizes the effect of increasing the ventilation volume, and is energy-saving and environmentally friendly.
  • FIG. 1 is an overall structural diagram of a temperature control system according to Embodiment 1 of the present disclosure
  • FIG. 2 is a structural diagram of a pressure control module in a temperature control system according to Embodiment 1 of the present disclosure
  • FIG. 3 is a schematic diagram of air flow when a temperature control system is working in Embodiment 1 of the present disclosure.
  • 1-centrifugal fan 2-air collection pipe, 3-heat collection module, 4-ventilation pipe, 5-pressure control module, 5-1-centrifugal fan, 5-2 ——Protective net, 5-3——Shell.
  • This system performs engineering calculations and simulation analysis on the relatively independent enclosed space of the entire tower, adopts the internal and external circulation independent air-to-air heat dissipation method to dissipate the converter, and uses pressure control equipment to make the converter input dry and cold air.
  • the arrangement and pipeline connection realize the temperature control of the converter, and effectively reduce the heat accumulation of the electrical components after heat dissipation, ensure the operating temperature environment of the converter, provide the service life of the electrical components, and ensure the safe and normal operation of the entire unit.
  • This embodiment discloses a temperature control system for a high-power wind turbine converter. As shown in FIG. 1, it includes one or more wind collection modules, heat collection modules 3, ventilation pipes 4 and pressure control connected in sequence. Module 5,
  • each of the wind collection modules includes a centrifugal fan 1 and a wind collection pipeline 2.
  • the wind collection module passes the air in the converter into the wind collection pipeline through the centrifugal fan 1.
  • the wind collecting module is fixed outside the converter.
  • the heat collecting module is a heat collecting air box, and collects heat in one or more air collecting pipes.
  • the heat collecting module is placed on the bottom bracket of the tower.
  • the pressure control module mainly includes the following components, a centrifugal fan 5-1, a protective net 5-2, and a housing 5-3.
  • the inside and the outside of the tower are two environmental systems respectively, and the isolation of the two is achieved through the tower's own sealing structure.
  • the wind collection module and the heat collection module 3 are both placed inside the converter, and the pressure control module 5 is placed outside the converter, the heat collection module 3 and the pressure control module 5 are connected through a ventilation pipe 4, and the above-mentioned modules All the joints are equipped with sealing elements to achieve system sealing.
  • the tower door is provided with an air inlet.
  • the air inlet When a negative pressure is generated inside the tower, the air inlet is opened due to the principle of air pressure balance and enters the external cold air.
  • the air outlet is provided in the pressure control module. When the pressure control module is working, the air inside the tower is discharged through the air outlet through the air collection module, the heat collection module 3, and the ventilation pipe 4.
  • the suction effect is generated, so that the relatively enclosed environment in the entire tower is at a negative pressure compared to the external environment.
  • the external air is forced into the environment of the tower through the air inlet
  • cold air is drawn into the converter cabinet to cool the electrical components
  • the heat generated by the electrical components is drawn into the air collection pipe 2
  • the heat collection module 3 A negative air pressure is generated inside, and the air with heat in the air collection pipe 2 is sucked into the heat collection module 3, and under the action of the pressure control module 5, the air with heat in the heat collection module 3 passes through the ventilation pipe 4
  • the pressure module 5 leads the air with heat to the external environment of the tower under the action of the internal positive air pressure.
  • the purpose of this embodiment is to provide a temperature control system for a high-power wind turbine converter, which is characterized by including a controller, a temperature probe for detecting the internal ambient temperature of the converter, and a temperature control subsystem; wherein,
  • the temperature control subsystem includes: one or more wind collection modules and heat collection modules provided outside the converter in the tower, the one or more wind collection modules are connected to one end of the ventilation pipe via the heat collection module; A pressure control module located outside the tower, connected to the other end of the ventilation pipeline;
  • the controller is connected with a temperature probe and a pressure control module
  • the controller receives the temperature data transmitted by the temperature probe, and when the temperature exceeds a preset value, controls the pressure control module to start, based on the principle of pressure balance, the external air enters the inside of the tower through the air inlet window on the tower door, and After being sucked into the converter, the air inside the converter enters the temperature control system from the air collection module and is discharged through the pressure control module.
  • the controller receives the internal temperature data of the converter sent by the temperature probe, judges whether the temperature exceeds a preset value (for example, 50°C), and if it exceeds, controls the pressure control module 5 to start, and the internal air passes through the air collection module 1.
  • the heat collecting module 3 and the ventilation pipeline 4 are discharged through the air outlet of the pressure control module 5.
  • the external air enters the interior of the converter through the air inlet, thereby realizing the converter through internal and external air exchange. Cooling of electrical components.
  • the cooling cycle in the converter is simulated by the finite element simulation software when the temperature in the tower exceeds 50°C to obtain the most suitable air volume.
  • the temperature control system of the present disclosure adopts internal and external air exchange methods to dissipate heat to the converter, and uses pressure control equipment to input the converter with dry and cold air.
  • the temperature control of the converter is achieved through reasonable layout and pipeline connection. And effectively reduce the heat accumulation of electrical components after heat dissipation, there is no overall or partial overheating, to ensure the normal operation of electrical components.
  • This disclosure combines the data of the temperature probe in the converter to realize automatic control of the ambient temperature in the converter, ensure that the ambient temperature in the converter is within a reasonable range, improve the service life of electrical components, and ensure the safety of the entire unit normal operation.
  • the present disclosure solves the problem of the difficulty of outside air entering the inside of the tower under the leeward conditions of the unit, realizes the effect of increasing the ventilation volume, and is energy-saving and environmentally friendly.

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  • Engineering & Computer Science (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Power Engineering (AREA)
  • Wind Motors (AREA)

Abstract

本发明公开了一种大功率风力发电机组变流器的温度控制系统，包括：设于塔筒内变流器外部的一个或多个集风模块和集热模块，所述一个或多个集风模块经由集热模块连接通风管路的一端；设于塔筒外部的压力控制模块，连接所述通风管路的另一端；压力控制模块工作时，基于压力平衡原理，外部空气经由塔筒门上的进风窗进入塔筒内部，并被吸入变流器内部，变流器内部空气自集风模块进入所述温度控制系统，经由压力控制模块排出。本发明采用内外空气交换的方式对变流器进行散热，实现变流器温度控制，并有效降低电气元件散热后的热量聚集，无整体或局部过热的情况，保证电气元件的正常运行。

Description

一种大功率风力发电机组变流器温度控制系统 技术领域
本公开属于风力发电技术领域，尤其涉及一种大功率风力发电机组变流器温度控制系统。
背景技术
伴随着我国各大风场的兴建，机组的温度控制问题变得日益突出。大功率风机变流器普遍安装在塔筒底部，采用液压水冷却方式，此种方式冷却效果较好，但是，由于采用液压泵、高压管路、冷却器等设备，密封要求非常高，油水在泄漏时会造成对自身系统以及风机组件的锈蚀与污染，同时也会对环境造成污染，并且液压水冷系统安装与维护相当复杂，采购、维护成本费用高。
如变流器采用自散热冷却方式，大功率变流器产生的热量散发于塔筒内部，与塔筒内部空气进行热交换，以求达到散热效果，但在高温环境，特别长时间满功率负载的情况下，散热效果慢，容易导致变流器柜体内部环境温度过高，同时存在热量被重新吸入变流器的情况，导致降低柜体内电气元器件的寿命和可靠性，也使得温度保护继电器进行保护动作，使得整个发电机组随之停机。因为此类故障往往发生在发电功率较大的工况，此时停机将造成较大发电量损失，给业主造成经济损失。
因此，在准确的控制变流器的温度，保证冷却效果以确保机组的运行温度环境要求的背景下，采用温控效果好，造价低，易于安装与维护的温度控制系统成为迫切需要解决的问题。
发明内容
为克服上述现有技术的不足，本公开提供了一种大功率风力发电机组变流器温度控制系统，本系统在塔筒空间相对密闭的前提下，采用压力控制设备，使塔筒内产生低压环境，强制变流器吸收外界空气进行冷却，通过合理的排风管路和热量集中装置，实现变流器、塔筒内部温度控制，有效解决变流器通风不足、散热集中、热量重新吸入等情况，避免温度保护继电器工作导致停机的问题，有效保证变流器允许温度环境，保证风机机组正常运行。
为实现上述目的，本公开的一个或多个实施例提供了如下技术方案：
一种大功率风力发电机组变流器的温度控制系统，包括：
设于塔筒内变流器外部的一个或多个集风模块和集热模块，所述一个或多个集风模块经由集热模块连接通风管路的一端；
设于塔筒外部的压力控制模块，连接所述通风管路的另一端；
压力控制模块工作时，基于压力平衡原理，外部空气经由塔筒门上的进风窗进入塔筒内部，并被吸入变流器内部，变流器内部空气自集风模块进入所述温度控制系统，经由压力控制模块排出。
进一步地，所述温度控制系统各部分的连接处均设置密封元件。
进一步地，所述集风模块包括离心风机和集风管路，所述压力控制模块工作时，通过离心风机吸取变流器内空气到集风管路。
进一步地，所述压力控制模块包括离心式风机，所述压力控制模块工作时，通过离心式风机排出管路内空气。
一个或多个实施例提供了一种大功率风力发电机组变流器的温度控制系统，包括控制器、用于探测变流器内部环境温度的温度探头和温度控制子系统；其中，
所述温度控制子系统包括：设于变流器内部的一个或多个集风模块和集热模块，所述一个或多个集风模块经由集热模块连接通风管路的一端；设于塔筒外部的压力控制模块，连接所述通风管路的另一端；
所述控制器与温度探头和压力控制模块连接；
所述控制器接收温度探头传输的温度数据，当所述温度超过预设值时，控制压力控制模块启动，基于压力平衡原理，外部空气经由塔筒门上的进风窗进入变流器内部，变流器内部空气自集风模块进入所述温度控制系统，经由压力控制模块排出。
进一步地，通过有限元仿真软件模拟不同进风量和变流器温度变化时，塔筒内温度超过预设值时变流器内的冷却循环，获取最适宜风量，以控制压力控制系统吸风强度。
进一步地，所述温度控制子系统各部分的连接处均设置密封元件。
进一步地，所述集风模块包括离心风机和集风管路，所述压力控制模块工作时，通过离心风机吸取变流器内空气到集风管路。
进一步地，所述压力控制模块包括离心式风机，所述压力控制模块工作时，通过离心式风机排出管路内空气。
以上一个或多个技术方案存在以下有益效果：
本公开的温度控制系统采用内外空气交换的方式对变流器进行散热，采用压力控制设备使变流器输入干冷的空气，通过合理的布置及管路连接，实现了变流器的温度控制，并有效降低电气元件散热后的热量聚集，无整体或局部过热的情况，保证电气元件的正常运行。
本公开结合变流器内温度探头的数据，实现变流器内环境温度的自动控制， 保证变流器内的环境温度在合理范围之内，提高了电气元件的使用寿命，保证整个机组的安全正常运行。
本公开解决了机组背风情况下外界空气进入塔筒内部困难的问题，实现增大通风量效果，节能环保。
附图说明
构成本公开的一部分的说明书附图用来提供对本申请的进一步理解，本申请的示意性实施例及其说明用于解释本申请，并不构成对本申请的不当限定。
图1为本公开实施例一温度控制系统的总体结构图；
图2为本公开实施例一温度控制系统中压力控制模块的结构图；
图3为本公开实施例一温度控制系统工作时空气流转示意图。
其中，1——离心式风机、2——集风管路、3——集热模块、4——通风管路、5——压力控制模块、5-1——离心式风机、5-2——防护网、5-3——壳体。
具体实施方式
应该指出，以下详细说明都是示例性的，旨在对本申请提供进一步的说明。除非另有指明，本文使用的所有技术和科学术语具有与本申请所属技术领域的普通技术人员通常理解的相同含义。
需要注意的是，这里所使用的术语仅是为了描述具体实施方式，而非意图限制根据本申请的示例性实施方式。如在这里所使用的，除非上下文另外明确指出，否则单数形式也意图包括复数形式，此外，还应当理解的是，当在本说明书中使用术语“包含”和/或“包括”时，其指明存在特征、步骤、操作、器件、组件和/或它们的组合。
在不冲突的情况下，本申请中的实施例及实施例中的特征可以相互组合。
为了方便叙述，本公开中如果出现“上”、“下”、“左”“右”字样，仅表示与附图本身的上、下、左、右方向一致，并不对结构起限定作用,仅仅是为了便于描述本公开和简化描述，而不是指示或暗示所指的设备或元件必须具有特定的方位，以特定的方位构造和操作，因此不能理解为对本公开的限制。
本系统通过对整个塔筒相对独立的密闭空间，进行工程计算和仿真分析，采用内外循环独立的空空散热方式对变流器进行散热，采用压力控制设备使变流器输入干冷的空气，通过合理的布置及管路连接，实现了变流器的温度控制，并有效降低电气元件散热后的热量聚集，保证变流器运行温度环境，提供电气元件的使用寿命，保证整个机组的安全正常运行。
实施例一
本实施例公开了一种大功率风力发电机组变流器的温度控制系统，如图1所示，包括依次连接的一个或多个集风模块、集热模块3、通风管路4和压力控制模块5，
其中，每个所述集风模块包括离心式风机1和集风管路2，压力控制模块工作时，集风模块通过离心式风机1使变流器内空气进入集风管路。所述集风模块固定在变流器外部。
所述集热模块为集热风箱，将一个或多个集风管路中的热量汇总。所述集热模块置于塔筒底部支架上。
如图2所示，压力控制模块主要包含如下组件，离心式风机5-1、防护网5-2、壳体5-3。
如图3所示，塔筒内部和外部分别是两个环境系统，通过塔筒自身的密封结构实现两者的隔离。所述集风模块和集热模块3均置于变流器内部，压力控 制模块5置于变流器的外部，集热模块3和压力控制模块5通过通风管路4连接，并且，上述模块的连接处均设置密封元件，以实现系统密封。
所述塔筒门上设有进风口，当塔筒内部产生负压时，进风口由于气压平衡原理打开，进入外部冷空气。所述出风口设于压力控制模块，当压力控制模块工作时，塔筒内部的空气经由集风模块、集热模块3、通风管路4通过出风口排出。
在压力控制模块5作用下，产生吸风作用，使整个塔筒内相对封闭的环境处于较于外环境的负压情况，根据气压平衡原理，外部空气被迫通过进风口进入塔筒内环境，在离心风机1作用下，冷空气吸入变流器柜体内，对电气元件进行冷却，同时将电气元件产生的热量吸入集风管路2中，之后在压力控制模块5作用下，集热模块3内部产生负气压，将集风管路2中带有热量的空气吸入集热模块3中，并在压力控制模块5的作用下，使集热模块3中带有热量的空气通过通风管路4进入压力模块5内，由压力模块5在内部正气压的作用下，将带有热量的空气导出至塔筒外部环境中。
实施例二
本实施例的目的是提供一种大功率风力发电机组变流器的温度控制系统，其特征在于，包括控制器、用于探测变流器内部环境温度的温度探头和温度控制子系统；其中，
所述温度控制子系统包括：设于塔筒内变流器外部的一个或多个集风模块和集热模块，所述一个或多个集风模块经由集热模块连接通风管路的一端；设于塔筒外部的压力控制模块，连接所述通风管路的另一端；
所述控制器与温度探头和压力控制模块连接；
所述控制器接收温度探头传输的温度数据，当所述温度超过预设值时，控制压力控制模块启动，基于压力平衡原理，外部空气经由塔筒门上的进风窗进入塔筒内部，并被吸入变流器内部，变流器内部空气自集风模块进入所述温度控制系统，经由压力控制模块排出。
所述控制器接收所述温度探头发送的变流器内部温度数据，判断所述温度是否超过预设值(例如50℃)，若超过，则控制压力控制模块5启动，内部空气经由集风模块、集热模块3、通风管路4通过压力控制模块5的出风口排出，与此同时，根据气压平衡原理，外部空气经由进风口进入变流器内部，从而通过内外空气交换实现了变流器电器元件的冷却。当变流器内的温度再次升至预设启动温度点时5压力模块再次启动，如此循环。
为了准确控制压力控制模块进行吸风时的风量，通过有限元仿真软件模拟塔筒内温度超过50℃时变流器内的冷却循环，获取最适宜风量。
以上一个或多个实施例具有以下技术效果：
本公开的温度控制系统采用内外空气交换的方式对变流器进行散热，采用压力控制设备使变流器输入干冷的空气，通过合理的布置及管路连接，实现了变流器的温度控制，并有效降低电气元件散热后的热量聚集，无整体或局部过热的情况，保证电气元件的正常运行。
本公开结合变流器内温度探头的数据，实现变流器内环境温度的自动控制，保证变流器内的环境温度在合理范围之内，提高了电气元件的使用寿命，保证整个机组的安全正常运行。
本公开解决了机组背风情况下外界空气进入塔筒内部困难的问题，实现增大通风量效果，节能环保。
以上所述仅为本申请的优选实施例而已，并不用于限制本申请，对于本领域的技术人员来说，本申请可以有各种更改和变化。凡在本申请的精神和原则之内，所作的任何修改、等同替换、改进等，均应包含在本申请的保护范围之内。
上述虽然结合附图对本申请的具体实施方式进行了描述，但并非对本申请保护范围的限制，所属领域技术人员应该明白，在本申请的技术方案的基础上，本领域技术人员不需要付出创造性劳动即可做出的各种修改或变形仍在本申请的保护范围以内。

Claims (9)

  1. 一种大功率风力发电机组变流器的温度控制系统，其特征在于，包括：
    设于塔筒内变流器外部的一个或多个集风模块和集热模块，所述一个或多个集风模块经由集热模块连接通风管路的一端；
    设于塔筒外部的压力控制模块，连接所述通风管路的另一端；
    压力控制模块工作时，基于压力平衡原理，外部空气经由塔筒门上的进风窗进入塔筒内部，并被吸入变流器内部，变流器内部空气自集风模块进入所述温度控制系统，经由压力控制模块排出。
  2. 如权利要求1所述的一种大功率风力发电机组变流器的温度控制系统，其特征在于，所述温度控制系统各部分的连接处均设置密封元件。
  3. 如权利要求1所述的一种大功率风力发电机组变流器的温度控制系统，其特征在于，所述集风模块包括离心风机和集风管路，所述压力控制模块工作时，通过离心风机吸取变流器内空气到集风管路。
  4. 如权利要求1所述的一种大功率风力发电机组变流器的温度控制系统，其特征在于，所述压力控制模块包括离心式风机，所述压力控制模块工作时，通过离心式风机排出管路内空气。
  5. 一种大功率风力发电机组变流器的温度控制系统，其特征在于，包括控制器、用于探测变流器内部环境温度的温度探头和温度控制子系统；其中，
    所述温度控制子系统包括：设于塔筒内变流器外部的一个或多个集风模块和集热模块，所述一个或多个集风模块经由集热模块连接通风管路的一端；设于塔筒外部的压力控制模块，连接所述通风管路的另一端；
    所述控制器与温度探头和压力控制模块连接；
    所述控制器接收温度探头传输的温度数据，当所述温度超过预设值时，控 制压力控制模块启动，基于压力平衡原理，外部空气经由塔筒门上的进风窗进入变流器内部，变流器内部空气自集风模块进入所述温度控制系统，经由压力控制模块排出。
  6. 如权利要求5所述的一种大功率风力发电机组变流器的温度控制系统，其特征在于，通过有限元仿真软件模拟不同进风量和变流器温度变化时，塔筒内温度超过预设值时变流器内的冷却循环，获取最适宜风量，以控制压力控制系统吸风强度。
  7. 如权利要求5所述的一种大功率风力发电机组变流器的温度控制系统，其特征在于，所述温度控制子系统各部分的连接处均设置密封元件。
  8. 如权利要求5所述的一种大功率风力发电机组变流器的温度控制系统，其特征在于，所述集风模块包括离心风机和集风管路，所述压力控制模块工作时，通过离心风机吸取变流器内空气到集风管路。
  9. 如权利要求5所述的一种大功率风力发电机组变流器的温度控制系统，其特征在于，所述压力控制模块包括离心式风机，所述压力控制模块工作时，通过离心式风机排出管路内空气。
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