CAJ | 학술논문

太阳能是新能源领域最具潜力的可再生能源，光伏扬水是太阳能最具应用潜力的领域之一。迄今为止，工作效率低、稳定性差是制约其推广的主要瓶颈。提出了一种前馈+反馈的双环路控制器结构和基于变步长扰动观察法+常压法的MPPT算法与调压调速相结合的控制策略。结果表明使用这种结构和控制策略的光伏扬水系统可有效提高系统的工作效率和稳定性。论文详细介绍了系统组成，给出了各主要结构参数设计过程，描述了提高效率及稳定性方法，即在光照和温度剧烈变化时，前馈环路快速检测出光伏电池板功率变化，反馈环路及时消除水泵转速误差，有效抑制系统振荡，双环路复合控制器能快速跟踪系统参数变化，使系统始终工作在最大功率点上。
태양능시신능원영역최구잠력적가재생능원，광복양수시태양능최구응용잠력적영역지일。흘금위지，공작효솔저、은정성차시제약기추엄적주요병경。제출료일충전궤+반궤적쌍배로공제기결구화기우변보장우동관찰법+상압법적MPPT산법여조압조속상결합적공제책략。결과표명사용저충결구화공제책략적광복양수계통가유효제고계통적공작효솔화은정성。논문상세개소료계통조성，급출료각주요결구삼수설계과정，묘술료제고효솔급은정성방법，즉재광조화온도극렬변화시，전궤배로쾌속검측출광복전지판공솔변화，반궤배로급시소제수빙전속오차，유효억제계통진탕，쌍배로복합공제기능쾌속근종계통삼수변화，사계통시종공작재최대공솔점상。
Solar energy is the most promising renewable energy, and a photovoltaic pumping system is one of the most potential fields of the applications. Up to now, low efficiency and poor stability have been the uppermost “bottle neck” of a serious hindrance to its generalization. An architecture of feed-forward plus feed-back double loop control-ler and a control strategy of combining an MPPT algorithm of variable step P&O plus CVT with speed and voltage regu-lation are proposed. Tests show that the photovoltaic pumping system based on the controller and control strategy can effectively raise its operation efficiency and stability. In this paper, the composition of the system is presented, the de-sign of the main structure parameters is given, and the means of increasing efficiency and stability of the system is de-scribed in detail. That is, when the illumination and temperature change violently, the feed-forward loop quickly de-tects the power change of PV cell panels, the feedback loop timely eliminates the speed error and effectively suppres-ses the oscillations, and the double loop compound controller quickly tracks the change of the system parameters so that the system always operates at the maximum power point( MPP) .