风电机组研究.ppt

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1、目次Directory一、常规的风电机组1,theroutinewindpowergeneratingset.二、无刷励磁系统原理2，theprincipleofbrushlessexcitationsystem.三、高速无刷励磁风电机组及对比3,thehigh-speedbrushlessexcitationgenerationsetandcontrast.四、长星风电及机组介绍4,Introductionofchangxingwindpowerandgenerationset.五、结论5,conclusion.一、常规的风电机组KindsofRoutineWindPowerG

2、eneratingset高速双馈High-speedanddouble-fedgenerator直驱永磁Direct-drivepermanentmagnetgenerator直驱励磁Direct-driveexcitationgenerator中、高速永磁MediumandHighspeedpermanentmagnetgenerator其它如：高速异步、无刷双馈等Others:high-speedasynchronousgenerator,brushlessanddouble-fedgeneratorandsoon.常规风电机组图例Legendsofroutinewindpo

3、wergeneratingsetGearboxMaincircuitbreakerLinearcouplingtransformerMediumvoltageswitchgearGrid-sideconverterGenerator-sidecontrolMainturbinecontrolConvertercontrolVariablepitchcontrolRotorbearingGridTransformerPermanentSynchronousgeneratorAC-DC-ACconverterforgridconnected现有机组存在的问题：Theproblemso

4、froutinewindpowergeneratingset滑环、碳刷的不可靠问题及维护问题（双馈机组、直驱电励磁机组）Slipringandcarbonbrushareeasytodamage永磁发电机组的退磁问题（直驱、中、高速永磁机组）Permenantmagnetgeneratoristodemagnetization现有发电机自身调节能力差、低电压穿越困难的问题Theroutinegeneratorhaslowabilitytoadjustitselfandit'shardtocrossthelowvoltage.二、无刷励磁系统原理Theprincipleofbrus

5、hlessexcitationsystem无刷励磁系统是无刷励磁同步发电机最核心、最关键的组成部分。一部分用于向发电机的磁场绕组提供直流电流，以建立直流磁场，通常称之为励磁功率输出部分（或称为功率单元）;另一部分用于在正常运行或发生事故时调节励磁电流，以满足运行的需要，它包括励磁调节器、强行励磁、强行减磁或自动灭磁等，一般称为励磁控制单元。Thebrushlessexcitationisthekeypartofallinbrushlessexcitationsynchronousgenerators.Itconsistsoftwoparts,powerunitandexcitat

6、ioncontrolunit.高速同步无刷励磁系统工作原理Theprincipleofhigh-speedsynchronousbrushlessexcitationsysytem.GearboxWindturbinegeneratorRotatingrectifierSynchronousgeneratorSiliconcontrolledstaticexcitationequipmentRectifierinverterGridTransformerBrushlessexciter,Rotorarmature,Non-slipring静态直流励磁装置StaticDCexcit

7、ationdevice交流励磁机ACexciter旋转整流器Rotatingrectifier无刷励磁系统组成Brushlessexcitationsystem无刷励磁系统原理图BrushlessexcitationsystemdiagramExciterStaticexcitationequipmentRotatingdioderectifierbriageRotorStatorSynchronousmachinerotorwinding静态励磁装置Staticexcitati