摘要： The objective of this paper is to propose a photovoltaic charger with multi charging methods and dynamic energy regulation (DER) strategies. A dc-dc boost converter with the maximum power point tracking (MPPT) feature is utilized for the PV charger. Besides, three charging methods are realized by the converter: 1) the constant current charging, 2) the pulse-ripple-current charging and 3) the sinusoidal-ripple-current charging. However, due to unpredictable environment conditions as well as non-ideal operational characteristics of the converter, the power transferred from the PV array might be fluctuated while the charging efficiency will be decreased. Therefore, the aim of this paper is to propose DER strategies for PV chargers. Four different control methods are included in the DER strategy and developed to compensate the energy loss caused by the current limitation of the PV array. Moreover, these strategies are able to prevent the circuit damage caused by non-ideal characteristics. Eventually, the stability and the charging efficiency of the PV charger system can be increased. Finally, both simulation and experimental results obtained from a 1-kW prototype circuit verify the performance and feasibility of the proposed PV charger.