电网技术
電網技術
전망기술
POWER SYSTEM TECHNOLOGY
2014年
4期
952-958
,共7页
杨勇%李世华%朱彬彬%陶雪慧%赵方平%王志冰
楊勇%李世華%硃彬彬%陶雪慧%趙方平%王誌冰
양용%리세화%주빈빈%도설혜%조방평%왕지빙
单相光伏并网逆变器%灵活功率控制%双阶广义积分%比例准谐振%解耦控制
單相光伏併網逆變器%靈活功率控製%雙階廣義積分%比例準諧振%解耦控製
단상광복병망역변기%령활공솔공제%쌍계엄의적분%비례준해진%해우공제
single-phase photovoltaic grid-connected inverters%flexible power control%second order generalized integrator%proportion quasi-resonance%decoupling control
针对单相光伏并网逆变器的特点,提出一种在静止坐标系下单相光伏并网逆变器的灵活功率控制方法。通过双阶广义积分算法得到与电网电压同相以及滞后电网电压90°的2个正交电网电压。在静止两相坐标系下通过比例准谐振控制实现对给定电流的快速跟踪。实验结果表明:该控制方法可实现有功功率和无功功率的解耦控制,系统具有良好的静态、动态性能。
針對單相光伏併網逆變器的特點,提齣一種在靜止坐標繫下單相光伏併網逆變器的靈活功率控製方法。通過雙階廣義積分算法得到與電網電壓同相以及滯後電網電壓90°的2箇正交電網電壓。在靜止兩相坐標繫下通過比例準諧振控製實現對給定電流的快速跟蹤。實驗結果錶明:該控製方法可實現有功功率和無功功率的解耦控製,繫統具有良好的靜態、動態性能。
침대단상광복병망역변기적특점,제출일충재정지좌표계하단상광복병망역변기적령활공솔공제방법。통과쌍계엄의적분산법득도여전망전압동상이급체후전망전압90°적2개정교전망전압。재정지량상좌표계하통과비례준해진공제실현대급정전류적쾌속근종。실험결과표명:해공제방법가실현유공공솔화무공공솔적해우공제,계통구유량호적정태、동태성능。
According to the feature of single-phase photovoltaic (PV) grid-connected inverter, a flexible power control method for single-phase PV grid-connected inverter in stationary coordinate system is proposed. Two orthogonal voltages, one of which is of the same phase as grid voltage and the phase of another one lags behind the grid voltage by 90°, are obtained by second order generalized integral (SOGI) algorithm, and the fast tracking of given current can be implemented by proportional quasi-resonant (PQR) controller in the two-phase stationary coordinate system. Experimental results show that using the proposed control method the decoupling control of active and reactive power can be realized, and the control system possesses good static and dynamic performances.