リミットサイクル動作による簡易最大電力点追尾制御方式

系の安定性と応答性に着目した設計法

抄録

Authors previously proposed a new simple maximum power point tracking (MPPT) control scheme for a PV system connected in parallel with the ac system line without using conventional “mountain climbing” optimum operating point searching technique. Although no information is needed on PV array, the generated output power is maximized by utilizing limit cycle phenomena occurring on equilibrium/non-equilibrium boundary of system power flow. This paper shows a parameter design procedure to determine operating period based on a theoretical model is presented. It has turned out that the operating period of limit cycle is kept constant depending on the circuit and control parameters irrespective of the insolation conditions of PV array.