欢迎您！东篱公司
退出
-
申报数据库
-
立项数据库
-
成果数据库
-
项目获奖数据库
中文摘要：
主要针对双级单相并网逆变系统中DC/AC环节所用的锁相环与电流环控制算法进行研究，提出一种小功率单相光伏并网逆变器的设计方案。根据瞬时无功理论的单相锁相环技术，使用二阶广义积分器构造正交信号，改善了目前锁相环技术存在锁相误差及滤波延时的不足，提高了系统的精准度和稳定性。电流环控制采用比例谐振算法，消除了稳态误差，有效减小并网电流的总谐波失真，满足并网要求。结果验证了该方案的合理性和有效性。
英文摘要：
A low-power single-phase grid-connected photovoltaic inverter is presented for the phase-locked loop （PLL） and current loop control algorithm in DC/AC of the two-stage single-phase grid-connected inverter system. The single-phase PLL technology based on instantaneous reactive power theory and second-order generalized integrator constructing orthogonal signal are used to decline the phase-locked error and filter delay, which enhances the accuracy and stability of the PLL circuit. Proportion resonance algorithm is introduced in current loop control to eliminate the steady-state error so that the Total Harmonic Distortion （THD） of the grid current can meet the grid-connected requirement. The experimental results indicate the rationality and validity of the solution.
同期刊论文项目
同项目期刊论文
期刊信息
位置：