A single-sensor PV system featuring an innovative auto-adjustment variable step-size MPPT method

摘要: This paper proposes a new maximum power point tracking (MPPT) method by introducing an auto-adjustment variable step-size algorithm that uses only single sensor. novel scheme solves the problem encountered traditional methods, which require additional calculation of constant value. The naturally varying trend proposed function in this is applied to serve as step size MPPT algorithm, thereby enabling system provide reliable transient and steady-state responses even during sharp weather changes. Furthermore, can also be presence partial shadow condition. digital signal processor handles feedback value directs PWM drive switch converter. simulation experimental results verify performance PV with method.