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1、MiIMMqe尚null 磊, 孙 null 丹, 胡家兵, 贺益康, 王null 波(v,8sg310027)K1: 建立了三相电压型并网逆变器数学模型,在此基础上提出了一种基于滑模变结构的三相电压型并网逆变器直接功率控制策略,详细论述了控制策略原理及设计过程b该控制策略将滑模变结构控制器a直接功率控制和空间矢量脉宽调制技术相结合,不需要同步速旋转坐标变换即可实现恒定的开关频率,具有良好的稳态性能和快速的动态特性b在一台3kVA的并网逆变器样机上进行了实验研究,结果证明了所提出的滑模变结构直接功率控制策略的正确性和有效性b1oM: 电压型并网逆变器; 滑模变结构; 直接功率控制; 空间矢量脉
2、宽调制; 恒定开关频率收稿日期: 2010-03-02; 修回日期: 2010-05-19b国家高技术研究发展计划( 863 计划) 资助项目( 2007AA05Z419); 浙江省自然科学基金资助项目(Y1080287)b0nullM,?asT/1#/2y?Z,MiIMqyV#z+s3.MeMATLAB_.:bv,2005.14.9LHed.s:v,2004.15 GB/T 14549null 1993null?o.:SS,1993.尚null 磊(1986null ),男,硕士研究生,IEEE学生会员,主要研究方向:直接功率控制a变速恒频风力发电技术以及电网故障下DFIG 的不间断运行bE
3、-mail: shanglei0319 孙null 丹(1975null ),女,通信作者,博士,副教授,IEEE会员,主要研究方向:交流电机高性能运行控制a变速恒频风力发电技术以及电网故障下DFIG 的不间断运行bE-mail:胡家兵(1982null ),男,博士,IEEE会员,主要研究方向:电力电子与电力传动a变速恒频风力发电技术以及电网故障下DFIG的不间断运行bE-mail: emec_SlidingModeVariableStructureBasedDirectPowerControl ofThree-phaseGrid-connectedVoltageSourceInverter
4、sSH AN G Lei, SUN Dan, H U Jiabing, H E Yikang, WA NG Bo(Zhejiang University, Hangzhou310027, China)Abstract: Themathematicalmodel of thethree-phasegrid-connected voltagesourceinverter (GC-VSI) is developed. Based onthemodel, anovelslidingmodevariablestructure(SMVS) baseddirect powercontrol(DPC) str
5、ategyis proposedforthethree-phaseGC-VSI. TheprincipleanddesignschemeoftheproposedSMVS-DPCstrategyisstudiedindetail. TheproposedSMVS-DPC strategycombines SMVScontroller, DPC methodandspacevector pulsewidth modulation(SVPWM) techniquetogethertoimplement aconstant switchingfrequency without involving a
6、ny synchronous speed coordinatetransformation. Thus it canachieveexcellent steady-state performanceas well as rapid dynamic response. Experimental tests are conducted on a 3kVAthree-phaseGC-VSIand theresults validatethecorrectnessand feasibilityof theproposed SMVS-DPC strategy.This work is jointlysu
7、pported by NationalHighTechnologyResearchandDevelopment Program of China(863Program)(No. 2007AA05Z419) andNatural ScienceFoundation of ZhejiangProvince, China(No.Y1080287).Keywords: grid-connectedvoltage sourceinverter(GC-VSI); sliding modevariable structure(SMVS); direct power control(DPC); spaceve
8、ctorpulsewidth modulation (SVPWM); constant switchingfrequency(上接第62页null continuedfrom page62)RandomNumberInfluenceAnalysisforAgen-tbasedElectricityMarketSimulationExperimentsJ ING Zhaoxia1 , YA N G Ying1 , H . W. N . GA N 2 , CH EN H aoyong1 , ZH A N G Qian1 , CH EN Tianen3(1. South ChinaUniversit
9、y of Technology, Guangzhou 510640, China;2. TheHong Kong PolytechnicUniversity, HongKong, China;3. Northwest PowerGridCompanyTrading Center, Xinull an 7110048, China)Abstract: Agent-based computational economics has become one of the most important electricity market study methods.Research on therei
10、nforcement learningalgorithmisfairlydeep-goingwhilestrategyselection bymeansof therandom numberisits important link. Soitnulls necessarytostudytheinfluenceoftherandom numberinthealgorithm. WiththeRoth-Erevlearningalgorithm asan example, an analysisismadeof theimpact of therandom numberon the power m
11、arket simulation results andcomparisons are made between several random generating methods in simulation application in terms of performance.Meanwhile, bymakinganin-depth investigationon therelationshipbetween therandom numberandtheagent inelectricpowermarket simulation, requirements on thepropertyo
12、f therandom number arediscussed and an improved method is put forwardand usedtogeneraterepeatable, highlyefficient, anduniformlydistributedrandom sequences, therebyincreasingtheefficiencyand qualityof theagent-basedelectricpowermarket simulation experiments.This work is supportedbytheFundamental ResearchFunds fortheCentral Universities(No. 2009ZM0309).Keywords: agent-based simulation; Roth-Erev learning algorithm; pseudo-random number; electricitymarketnull83nullnull7?null nullnull,nullMiIMMqe
