电器与能效管理技术
電器與能效管理技術
전기여능효관리기술
Low Voltage Apparatus
2015年
11期
37-43
,共7页
范瑞祥%卢雄伟%胡质良%刘斌%熊勇
範瑞祥%盧雄偉%鬍質良%劉斌%熊勇
범서상%로웅위%호질량%류빈%웅용
逆变器%无线并联%下垂控制%收敛性分析%按容分配
逆變器%無線併聯%下垂控製%收斂性分析%按容分配
역변기%무선병련%하수공제%수렴성분석%안용분배
inverters%wireless parallel%droop control%convergence analysis%distribution by capacity
针对非同等功率等级的逆变器无线并联,考虑到系统功率限制,必须让负荷按照正比于功率的方式实现分配的问题,围绕下垂控制原理,通过对输出电压幅值和频率进行收敛性分析,推导出逆变负荷按容分配的充分条件。此外,引入虚拟阻抗法和双环调节器,搭建由两台不同容量的逆变器组成的微电网系统,通过仿真和试验验证了上述理论分析的有效性。
針對非同等功率等級的逆變器無線併聯,攷慮到繫統功率限製,必鬚讓負荷按照正比于功率的方式實現分配的問題,圍繞下垂控製原理,通過對輸齣電壓幅值和頻率進行收斂性分析,推導齣逆變負荷按容分配的充分條件。此外,引入虛擬阻抗法和雙環調節器,搭建由兩檯不同容量的逆變器組成的微電網繫統,通過倣真和試驗驗證瞭上述理論分析的有效性。
침대비동등공솔등급적역변기무선병련,고필도계통공솔한제,필수양부하안조정비우공솔적방식실현분배적문제,위요하수공제원리,통과대수출전압폭치화빈솔진행수렴성분석,추도출역변부하안용분배적충분조건。차외,인입허의조항법화쌍배조절기,탑건유량태불동용량적역변기조성적미전망계통,통과방진화시험험증료상술이론분석적유효성。
Considering the power limitation of the wireless paralleled inverters with different power level,the load distribution must be proportional to the capacity,which is a difficulty of micro-grid research over the past two years.Around the droop control principle,this article deduced the sufficient conditions of proportionally distributing the load through the convergence analysis of the amplitude and frequency of the output voltage.The sufficient conditions serve a very good guidance function on the determination of the droop control coefficient.In addition,the article introduced the virtual impedance method and double loop controller and set up a parallel system composed of two inverters with different capacity.The simulation and experiment results verify the correctness and effectiveness of the above theoretical analysis.