摘要
采用扰动观察法与基于Singer模型的Kalman估计相结合,提出一种新的MPPT控制策略。采用较大步长的扰动观察法定位最大功率点的电压范围;在该电压范围内转换为小步长电压,以相应采样电流作为被估量,采用基于Singer模型的Kalman估计对该电流值进行滤波削弱了量测误差,通过机动检测判断出电流状态突变,经过功率计算和比较定位出最大功率点;该策略提高了跟踪精度,解决了扰动观察法存在的误判问题,通过仿真验证了所提策略的正确性、有效性。
In this paper, a new MPPT control strategy was proposed by combining the perturbation＆observation method and Kalman estimation based on Singer model. The maximum power point voltage range was posted by the larger step length perturbation＆observation method. Converted to a small step voltage in the voltage range, the sampling current was measured, the measurement error the current value was weakened by Kalman estimation based on the singer model, the current state mutation was detected by maneuver detection, and the power maximum power point was adopted by calculation and comparison the power. The strategy improved the tracking accuracy, and solved the problem of misjudgment in the perturbation ＆observation method, The correctness and effectiveness of the strategy was verified by simulation.
出处
《电源技术》
CAS
CSCD
北大核心
2012年第12期1854-1856,共3页
Chinese Journal of Power Sources
