摘要
针对永磁(同步)风力发电机分布式直流并网的要求,提出并研究了一种基于机侧电压动态解耦补偿的且具有宽运行范围的分布式直流并网控制策略。分析了永磁风力发电机励磁分量控制原则,进而为电机的高性能运行提供依据。基于同步旋转坐标系把宽范围运行下系统所有的交叉耦合项和电压波动等原因造成的系统扰动统一定义为一个新的变量扰动,然后对控制系统进行补偿。采用辅助支撑电容的直流斩波电路进一步实现不同直流电压等级的匹配,最终实现永磁风力发电机的变速恒压控制。通过仿真和实验验证了控制策略的可行性和有效性。
In order to satisfy the demands of distributed DC grid with permanent magnet（synchronous） wind generator,the control strategy of distributed DC grid converter based on dynamic voltage compensation is proposed and studied with wide operation range.The control principle of excitation component was analyzed,and the basis was provided for high performances and so on.The disturbance variable was defined considering the cross coupling and voltage fluctuates based on the coordinate rotary system,and then the system was compensated.The DC chopper circuit was adopted with auxiliary support capacitance for the matching of diffirent DC voltage level.Fnially,the ariable speed constant voltage control of permanent magnet wind generator was implemented.Simulation and experimental vertify the feasibility and validity of the control stategies.
出处
《电机与控制学报》
EI
CSCD
北大核心
2011年第5期1-6,共6页
Electric Machines and Control
基金
国家高技术研究发展计划(863计划)(2008AA052412)
辽宁省教育厅资助项目(LT20100079)
关键词
永磁风力发电机
分布式直流并网
电压动态解耦
高性能运行
变速恒压
permanent magnet wind generator
distributed DC grid
dynamic voltage compensation
high performances operation
ariable speed constant voltage
