June-Hee Lee, June-Seok Lee, and Kyo-Beum Lee, "Current sensorless MPPT Method for a PV Flyback Microinverters Using a Dual-mode," in Proc. IPEC (ECCE-Asia) Conf., May 2014, pp. 532–537. > Paper

This paper proposes a current sensorless maximum power point tracking (MPPT) control strategy for a dual-mode photovoltaic (PV)

module-type interleaved flyback inverter (ILFI). A flyback inverter, which is one of many transformer topologies, is generally used

because of its simplicity and low cost. The topology used in this paper is the interleaved topology; therefore, the secondary ripple

current of the transformer can be reduced. The flyback inverter is typically operated in three modes: continuous conduction mode

(CCM), discontinuous conduction mode (DCM) and boundary conduction mode (BCM). This paper uses a dual-mode control that

includes both the DCM and BCM operations. In addition, the simulations are conducted to verify the performance and effectiveness

of the proposed current sensorless MPPT control strategy.